Viewing file:  atomic-generic-aux.c (1.32 KB) -rw-r--r--
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/* Supply a set of generic atomic functions to test the compiler make the
calls properly. */
/* { dg-do compile } */
/* { dg-options "-w" } */
/* Test that the generic builtins make calls as expected. */
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
void
__atomic_exchange (size_t size, void *obj, void *val, void *ret, int model)
{
/* Copy old value into *ret. */
memcpy (ret, obj, size);
/* Copy val into object. */
memcpy (obj, val, size);
}
/* Note that the external version of this routine has the boolean weak/strong
parameter removed. This is required by the external library. */
bool
__atomic_compare_exchange (size_t size, void *obj, void *expected,
void *desired, int model1, int model2)
{
bool ret;
if (!memcmp (obj, expected, size))
{
memcpy (obj, desired, size);
ret = true;
}
else
{
memcpy (expected, obj, size);
ret = false;
}
/* Make sure the parameters have been properly adjusted for the external
function call (no weak/strong parameter. */
if (model1 != __ATOMIC_SEQ_CST || model2 != __ATOMIC_ACQUIRE)
ret = !ret;
return ret;
}
void __atomic_load (size_t size, void *obj, void *ret, int model)
{
memcpy (ret, obj, size);
}
void __atomic_store (size_t size, void *obj, void *val, int model)
{
memcpy (obj, val, size);
}
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