Collaboration diagram for Atomic Instructions:

Files
file	atomic.h
	atomic operations header and generic implementations

Functions
int	l4util_cmpxchg32 (volatile l4_uint32_t *dest, l4_uint32_t cmp_val, l4_uint32_t new_val)
	Atomic compare and exchange (32 bit version)

int	l4util_cmpxchg16 (volatile l4_uint16_t *dest, l4_uint16_t cmp_val, l4_uint16_t new_val)
	Atomic compare and exchange (16 bit version)

int	l4util_cmpxchg8 (volatile l4_uint8_t *dest, l4_uint8_t cmp_val, l4_uint8_t new_val)
	Atomic compare and exchange (8 bit version)

int	l4util_cmpxchg (volatile l4_umword_t *dest, l4_umword_t cmp_val, l4_umword_t new_val)
	Atomic compare and exchange (machine wide fields)

l4_uint32_t	l4util_xchg32 (volatile l4_uint32_t *dest, l4_uint32_t val)
	Atomic exchange (32 bit version)

l4_uint16_t	l4util_xchg16 (volatile l4_uint16_t *dest, l4_uint16_t val)
	Atomic exchange (16 bit version)

l4_uint8_t	l4util_xchg8 (volatile l4_uint8_t *dest, l4_uint8_t val)
	Atomic exchange (8 bit version)

l4_umword_t	l4util_xchg (volatile l4_umword_t *dest, l4_umword_t val)
	Atomic exchange (machine wide fields)

void	l4util_atomic_add (volatile long *dest, long val)
	Atomic add.

void	l4util_atomic_inc (volatile long *dest)
	Atomic increment.

Atomic add/sub/and/or (8,16,32 bit version) without result
void	l4util_add8 (volatile l4_uint8_t *dest, l4_uint8_t val)

void	l4util_add16 (volatile l4_uint16_t *dest, l4_uint16_t val)

void	l4util_add32 (volatile l4_uint32_t *dest, l4_uint32_t val)

void	l4util_sub8 (volatile l4_uint8_t *dest, l4_uint8_t val)

void	l4util_sub16 (volatile l4_uint16_t *dest, l4_uint16_t val)

void	l4util_sub32 (volatile l4_uint32_t *dest, l4_uint32_t val)

void	l4util_and8 (volatile l4_uint8_t *dest, l4_uint8_t val)

void	l4util_and16 (volatile l4_uint16_t *dest, l4_uint16_t val)

void	l4util_and32 (volatile l4_uint32_t *dest, l4_uint32_t val)

void	l4util_or8 (volatile l4_uint8_t *dest, l4_uint8_t val)

void	l4util_or16 (volatile l4_uint16_t *dest, l4_uint16_t val)

void	l4util_or32 (volatile l4_uint32_t *dest, l4_uint32_t val)

Atomic add/sub/and/or operations (8,16,32 bit) with result
l4_uint8_t	l4util_add8_res (volatile l4_uint8_t *dest, l4_uint8_t val)

l4_uint16_t	l4util_add16_res (volatile l4_uint16_t *dest, l4_uint16_t val)

l4_uint32_t	l4util_add32_res (volatile l4_uint32_t *dest, l4_uint32_t val)

l4_uint8_t	l4util_sub8_res (volatile l4_uint8_t *dest, l4_uint8_t val)

l4_uint16_t	l4util_sub16_res (volatile l4_uint16_t *dest, l4_uint16_t val)

l4_uint32_t	l4util_sub32_res (volatile l4_uint32_t *dest, l4_uint32_t val)

l4_uint8_t	l4util_and8_res (volatile l4_uint8_t *dest, l4_uint8_t val)

l4_uint16_t	l4util_and16_res (volatile l4_uint16_t *dest, l4_uint16_t val)

l4_uint32_t	l4util_and32_res (volatile l4_uint32_t *dest, l4_uint32_t val)

l4_uint8_t	l4util_or8_res (volatile l4_uint8_t *dest, l4_uint8_t val)

l4_uint16_t	l4util_or16_res (volatile l4_uint16_t *dest, l4_uint16_t val)

l4_uint32_t	l4util_or32_res (volatile l4_uint32_t *dest, l4_uint32_t val)

Atomic inc/dec (8,16,32 bit) without result
void	l4util_inc8 (volatile l4_uint8_t *dest)

void	l4util_inc16 (volatile l4_uint16_t *dest)

void	l4util_inc32 (volatile l4_uint32_t *dest)

void	l4util_dec8 (volatile l4_uint8_t *dest)

void	l4util_dec16 (volatile l4_uint16_t *dest)

void	l4util_dec32 (volatile l4_uint32_t *dest)

Atomic inc/dec (8,16,32 bit) with result
l4_uint8_t	l4util_inc8_res (volatile l4_uint8_t *dest)

l4_uint16_t	l4util_inc16_res (volatile l4_uint16_t *dest)

l4_uint32_t	l4util_inc32_res (volatile l4_uint32_t *dest)

l4_uint8_t	l4util_dec8_res (volatile l4_uint8_t *dest)

l4_uint16_t	l4util_dec16_res (volatile l4_uint16_t *dest)

l4_uint32_t	l4util_dec32_res (volatile l4_uint32_t *dest)

Detailed Description

Function Documentation

◆ l4util_add16()

void l4util_add16	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 474 of file atomic.h.

◆ l4util_add16_res()

l4_uint16_t l4util_add16_res	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 526 of file atomic.h.

◆ l4util_add32()

void l4util_add32	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 478 of file atomic.h.

◆ l4util_add32_res()

l4_uint32_t l4util_add32_res	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 530 of file atomic.h.

◆ l4util_add8()

void l4util_add8	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 470 of file atomic.h.

◆ l4util_add8_res()

l4_uint8_t l4util_add8_res	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 522 of file atomic.h.

◆ l4util_and16()

void l4util_and16	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 502 of file atomic.h.

◆ l4util_and16_res()

l4_uint16_t l4util_and16_res	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 550 of file atomic.h.

◆ l4util_and32()

void l4util_and32	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 506 of file atomic.h.

◆ l4util_and32_res()

l4_uint32_t l4util_and32_res	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 554 of file atomic.h.

◆ l4util_and8()

void l4util_and8	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 498 of file atomic.h.

◆ l4util_and8_res()

l4_uint8_t l4util_and8_res	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 546 of file atomic.h.

◆ l4util_atomic_add()

void l4util_atomic_add	(	volatile long *	dest,
		long	val
	)

inline

Atomic add.

Parameters

dest	destination operand
val	value to add

Definition at line 482 of file atomic.h.

◆ l4util_atomic_inc()

void l4util_atomic_inc ( volatile long * dest )

inline

Atomic increment.

Parameters

dest	destination operand

Definition at line 425 of file atomic.h.

◆ l4util_cmpxchg()

int l4util_cmpxchg	(	volatile l4_umword_t *	dest,
		l4_umword_t	cmp_val,
		l4_umword_t	new_val
	)

inline

Atomic compare and exchange (machine wide fields)

Parameters

dest	destination operand
cmp_val	compare value
new_val	new value for dest

Returns: 0 if comparison failed, 1 otherwise

Compare the value in dest with cmp_val, if equal set dest to new_val

Definition at line 381 of file atomic.h.

Referenced by l4util_btr(), l4util_bts(), l4util_clear_bit(), and l4util_set_bit().

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◆ l4util_cmpxchg16()

int l4util_cmpxchg16	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	cmp_val,
		l4_uint16_t	new_val
	)

inline

Atomic compare and exchange (16 bit version)

Parameters

dest	destination operand
cmp_val	compare value
new_val	new value for dest

Returns: 0 if comparison failed, !=0 otherwise

Compare the value in dest with cmp_val, if equal set dest to new_val

Definition at line 365 of file atomic.h.

◆ l4util_cmpxchg32()

int l4util_cmpxchg32	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	cmp_val,
		l4_uint32_t	new_val
	)

inline

Atomic compare and exchange (32 bit version)

Parameters

dest	destination operand
cmp_val	compare value
new_val	new value for dest

Returns: 0 if comparison failed, !=0 otherwise

Compare the value in dest with cmp_val, if equal set dest to new_val

Definition at line 357 of file atomic.h.

◆ l4util_cmpxchg8()

int l4util_cmpxchg8	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	cmp_val,
		l4_uint8_t	new_val
	)

inline

Atomic compare and exchange (8 bit version)

Parameters

dest	destination operand
cmp_val	compare value
new_val	new value for dest

Returns: 0 if comparison failed, !=0 otherwise

Compare the value in dest with cmp_val, if equal set dest to new_val

Definition at line 373 of file atomic.h.

◆ l4util_dec16()

void l4util_dec16 ( volatile l4_uint16_t * dest )

inline

Parameters

dest	destination operand

Definition at line 433 of file atomic.h.

◆ l4util_dec16_res()

l4_uint16_t l4util_dec16_res ( volatile l4_uint16_t * dest )

inline

Parameters

dest	destination operand

Returns: res

Definition at line 458 of file atomic.h.

◆ l4util_dec32()

void l4util_dec32 ( volatile l4_uint32_t * dest )

inline

Parameters

dest	destination operand

Definition at line 437 of file atomic.h.

◆ l4util_dec32_res()

l4_uint32_t l4util_dec32_res ( volatile l4_uint32_t * dest )

inline

Parameters

dest	destination operand

Returns: res

Definition at line 462 of file atomic.h.

◆ l4util_dec8()

void l4util_dec8 ( volatile l4_uint8_t * dest )

inline

Parameters

dest	destination operand

Definition at line 429 of file atomic.h.

◆ l4util_dec8_res()

l4_uint8_t l4util_dec8_res ( volatile l4_uint8_t * dest )

inline

Parameters

dest	destination operand

Returns: res

Definition at line 454 of file atomic.h.

◆ l4util_inc16()

void l4util_inc16 ( volatile l4_uint16_t * dest )

inline

Parameters

dest	destination operand

Definition at line 417 of file atomic.h.

◆ l4util_inc16_res()

l4_uint16_t l4util_inc16_res ( volatile l4_uint16_t * dest )

inline

Parameters

dest	destination operand

Returns: res

Definition at line 446 of file atomic.h.

◆ l4util_inc32()

void l4util_inc32 ( volatile l4_uint32_t * dest )

inline

Parameters

dest	destination operand

Definition at line 421 of file atomic.h.

◆ l4util_inc32_res()

l4_uint32_t l4util_inc32_res ( volatile l4_uint32_t * dest )

inline

Parameters

dest	destination operand

Returns: res

Definition at line 450 of file atomic.h.

◆ l4util_inc8()

void l4util_inc8 ( volatile l4_uint8_t * dest )

inline

Parameters

dest	destination operand

Definition at line 413 of file atomic.h.

◆ l4util_inc8_res()

l4_uint8_t l4util_inc8_res ( volatile l4_uint8_t * dest )

inline

Parameters

dest	destination operand

Returns: res

Definition at line 442 of file atomic.h.

◆ l4util_or16()

void l4util_or16	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 514 of file atomic.h.

◆ l4util_or16_res()

l4_uint16_t l4util_or16_res	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 562 of file atomic.h.

◆ l4util_or32()

void l4util_or32	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 518 of file atomic.h.

◆ l4util_or32_res()

l4_uint32_t l4util_or32_res	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 566 of file atomic.h.

◆ l4util_or8()

void l4util_or8	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 510 of file atomic.h.

◆ l4util_or8_res()

l4_uint8_t l4util_or8_res	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 558 of file atomic.h.

◆ l4util_sub16()

void l4util_sub16	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 490 of file atomic.h.

◆ l4util_sub16_res()

l4_uint16_t l4util_sub16_res	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 538 of file atomic.h.

◆ l4util_sub32()

void l4util_sub32	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 494 of file atomic.h.

◆ l4util_sub32_res()

l4_uint32_t l4util_sub32_res	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 542 of file atomic.h.

◆ l4util_sub8()

void l4util_sub8	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Definition at line 486 of file atomic.h.

◆ l4util_sub8_res()

l4_uint8_t l4util_sub8_res	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Parameters

dest	destination operand
val	value to add/sub/and/or

Returns: res

Definition at line 534 of file atomic.h.

◆ l4util_xchg()

l4_umword_t l4util_xchg	(	volatile l4_umword_t *	dest,
		l4_umword_t	val
	)

inline

Atomic exchange (machine wide fields)

Parameters

dest	destination operand
val	new value for dest

Returns: old value at destination

Definition at line 407 of file atomic.h.

◆ l4util_xchg16()

l4_uint16_t l4util_xchg16	(	volatile l4_uint16_t *	dest,
		l4_uint16_t	val
	)

inline

Atomic exchange (16 bit version)

Parameters

dest	destination operand
val	new value for dest

Returns: old value at destination

Definition at line 395 of file atomic.h.

◆ l4util_xchg32()

l4_uint32_t l4util_xchg32	(	volatile l4_uint32_t *	dest,
		l4_uint32_t	val
	)

inline

Atomic exchange (32 bit version)

Parameters

dest	destination operand
val	new value for dest

Returns: old value at destination

Definition at line 389 of file atomic.h.

◆ l4util_xchg8()

l4_uint8_t l4util_xchg8	(	volatile l4_uint8_t *	dest,
		l4_uint8_t	val
	)

inline

Atomic exchange (8 bit version)

Parameters

dest	destination operand
val	new value for dest

Returns: old value at destination

Definition at line 401 of file atomic.h.

Files

Functions

Atomic add/sub/and/or (8,16,32 bit version) without result

Atomic add/sub/and/or operations (8,16,32 bit) with result

Atomic inc/dec (8,16,32 bit) without result

Atomic inc/dec (8,16,32 bit) with result

Detailed Description

Function Documentation

◆ l4util_add16()

◆ l4util_add16_res()

◆ l4util_add32()

◆ l4util_add32_res()

◆ l4util_add8()

◆ l4util_add8_res()

◆ l4util_and16()

◆ l4util_and16_res()

◆ l4util_and32()

◆ l4util_and32_res()

◆ l4util_and8()

◆ l4util_and8_res()

◆ l4util_atomic_add()

◆ l4util_atomic_inc()

◆ l4util_cmpxchg()

◆ l4util_cmpxchg16()

◆ l4util_cmpxchg32()

◆ l4util_cmpxchg8()

◆ l4util_dec16()

◆ l4util_dec16_res()

◆ l4util_dec32()

◆ l4util_dec32_res()

◆ l4util_dec8()

◆ l4util_dec8_res()

◆ l4util_inc16()

◆ l4util_inc16_res()

◆ l4util_inc32()

◆ l4util_inc32_res()

◆ l4util_inc8()

◆ l4util_inc8_res()

◆ l4util_or16()

◆ l4util_or16_res()

◆ l4util_or32()

◆ l4util_or32_res()

◆ l4util_or8()

◆ l4util_or8_res()

◆ l4util_sub16()

◆ l4util_sub16_res()

◆ l4util_sub32()

◆ l4util_sub32_res()

◆ l4util_sub8()

◆ l4util_sub8_res()

◆ l4util_xchg()

◆ l4util_xchg16()

◆ l4util_xchg32()

◆ l4util_xchg8()