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/* $OpenBSD: uthread_machdep.c,v 1.1 2000/10/03 02:44:15 d 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 {
int s[9]; /* s0..s7 */
int _fill;
double f[3]; /* $f0..$f2 */
int t9; /* XXX only used when bootstrapping */
int ra;
int 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 *)(((int)base + len - sizeof *f) & ~ALIGNBYTES);
f->cra = f->cfp = 0; /* for debugger */
f->ra = (int)entry;
f->t9 = (int)entry;
statep->frame = (int)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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