inferno-os/lib9/setfcr-Solaris-sparc.c

/* This code is a little awkward.  If somebody who understands Solaris
   better would tell me an idiomatic way to invoke equivalent
   behavior, I'd be grateful.    ehg@bell-labs.com  */

#include "lib9.h"

ulong
getfcr(void)
{
	ulong v;

	asm("	st	%fsr, [%fp-8]");
	return v;
}

void
setfcr(ulong v)
{
	ulong vv;

	vv = (getfcr() & ~FPFCR) | (v & FPFCR);
	asm("	ld	[%fp-4], %fsr");
}

ulong
getfsr(void)
{
	ulong v;

	asm("	st	%fsr, [%fp-8]");
	return v;
}

void
setfsr(ulong v)
{
	ulong vv;

	vv = (getfsr() & ~FPFSR) | (v & FPFSR);
	asm("	ld	[%fp-4], %fsr");
}