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/* $OpenBSD: uthread_machdep.c,v 1.3 2004/11/02 21:36:11 pefo Exp $ */
/* David Leonard, <d@csee.uq.edu.au>. Public domain. */
/*
* Machine-dependent thread state functions for OpenBSD/mips
*/
#include <pthread.h>
#include "pthread_private.h"
#define ALIGNBYTES 0x3
struct frame {
long s[9]; /* s0..s8 */
double f[8]; /* $f24..$f31 */
long fcr;
long t9; /* XXX only used when bootstrapping */
long ra;
/* XXX args should not be here for N32 or N64 ABIs */
long arg[4], cra, cfp; /* ABI space for debuggers */
};
/*
* 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;
/* Locate the initial frame, aligned at the top of the stack */
f = (struct frame *)(((long)base + len - sizeof *f) & ~ALIGNBYTES);
f->ra = (long)entry;
f->t9 = (long)entry;
f->fcr = 0;
statep->frame = (long)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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