// Disable Float Exceptions
//////////////////////////////////////////////////////////////////////////
void DisableFPUExceptions( void )
{
	__asm__ volatile ( 
			"cfc1    $2, $31\n" 
			"lui     $8, 0x80\n" 
			"and     $8, $2, $8\n"
			"ctc1    $8, $31\n"  );
}


Make sure you use pspvfpu.h/libpspvfpu if you want your code to play nicely with other VFPU-using code.