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atomic.h File Reference
Utility Functions » Atomic Instructions

atomic operations header and generic implementations More...

`#include <l4/sys/l4int.h>`
`#include <l4/sys/compiler.h>`
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Go to the source code of this file.

## 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

atomic operations header and generic implementations

Date
  10/20/2000

Author
  Lars Reuther reuth.nosp@m.er@o.nosp@m.s.inf.nosp@m..tu-.nosp@m.dresd.nosp@m.en.d.nosp@m.e, Jork Loeser jork@.nosp@m.os.i.nosp@m.nf.tu.nosp@m.-dre.nosp@m.sden..nosp@m.de

Definition in file atomic.h.