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/*
* OpenBSD/i386 machine-dependent thread macros
*
* $OpenBSD: uthread_machdep.h,v 1.3 1999/01/10 22:59:33 d Exp $
*/
#include <machine/reg.h>
/* save the floating point state of a thread */
#define _thread_machdep_save_float_state(thr) \
{ \
char *fdata = (char*)(&(thr)->_machdep.saved_fp); \
__asm__("fsave %0"::"m" (*fdata)); \
}
/* restore the floating point state of a thread */
#define _thread_machdep_restore_float_state(thr) \
{ \
char *fdata = (char*)(&(thr)->_machdep.saved_fp); \
__asm__("frstor %0"::"m" (*fdata)); \
}
/* initialise the jmpbuf stack frame so it continues from entry */
#define _thread_machdep_thread_create(thr, entry, pattr) \
{ \
/* entry */ \
(thr)->saved_jmp_buf[0] = (long) entry; \
/* stack */ \
(thr)->saved_jmp_buf[2] = (long) (thr)->stack \
+ (pattr)->stacksize_attr \
- sizeof(double); \
}
#define _thread_machdep_longjmp(a,v) longjmp(a,v)
#define _thread_machdep_setjmp(a) setjmp(a)
struct _machdep_struct {
struct fpreg saved_fp;
};
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