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/* $OpenBSD: uthread_machdep.c,v 1.2 2002/05/10 10:17:22 art Exp $ */
/* David Leonard, <d@csee.uq.edu.au>. Public domain. */
/*
* Machine-dependent thread state functions for OpenBSD/alpha
*/
#include <pthread.h>
#include "pthread_private.h"
#define ALIGNBYTES 15
struct frame {
long ra;
long s[7];
long t12;
long fs[8];
};
/*
* Given a stack and an entry function, initialise a state
* structure that can be later switched to.
*/
void
_thread_machdep_init(statep, base, len, entry)
struct _machdep_state* statep;
void *base;
int len;
void (*entry)(void);
{
struct frame *f;
f = (struct frame *)(((u_int64_t)base + len - sizeof *f) & ~ALIGNBYTES);
f->ra = f->t12 = (u_int64_t)entry;
statep->sp = (u_int64_t)f;
}
void
_thread_machdep_save_float_state(statep)
struct _machdep_state* statep;
{
}
void
_thread_machdep_restore_float_state(statep)
struct _machdep_state* statep;
{
}
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