void
splassert_check(int wantipl, const char *func)
{
int curipl = alpha_pal_rdps() & ALPHA_PSL_IPL_MASK;
/*
* Tell soft interrupts apart from regular levels.
*/
if (wantipl < 0)
wantipl = IPL_SOFTINT;
/*
* Depending on the system, hardware interrupts may occur either
* at level 3 or level 4. Avoid false positives in the former case.
*/
if (curipl == ALPHA_PSL_IPL_IO - 1)
curipl = ALPHA_PSL_IPL_IO;
if (curipl < wantipl) {
splassert_fail(wantipl, curipl, func);
/*
* If splassert_ctl is set to not panic, raise the ipl
* in a feeble attempt to reduce damage.
*/
alpha_pal_swpipl(wantipl);
}
}
int
_splraise(int s)
{
int cur = alpha_pal_rdps() & ALPHA_PSL_IPL_MASK;
return (s > cur ? alpha_pal_swpipl(s) : cur);
}
