/* $OpenBSD: uthread_machdep.c,v 1.2 2002/01/02 19:12:43 art Exp $ */ /* * Machine-dependent thread state functions for OpenBSD/sparc. */ #include #include #include #include #include "pthread_private.h" /* * 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 frame64 *f; /* Locate the initial frame, aligned at the top of the stack */ f = (struct frame64 *)(((long)base + len - sizeof *f) & ~ALIGNBYTES); f->fr_fp = 0; /* purposefully misaligned */ f->fr_pc = -1; /* for gdb */ statep->fp = (u_long)f - BIAS; statep->pc = -8 + (u_long)entry; } void _thread_machdep_save_float_state(statep) struct _machdep_state* statep; { } void _thread_machdep_restore_float_state(statep) struct _machdep_state* statep; { }