Subversion Repositories HelenOS-historic

Rev

Rev 309 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 309 Rev 326
Line 26... Line 26...
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 *
 27 
 *
28 
 */
 28 
 */
29 
 
 29 
 
30 
#include <fpu_context.h>
 30 
#include <fpu_context.h>
- 
 
 31 
#include <arch.h>
- 
 
 32 
#include <arch/cp0.h>
31 
 
 33 
 
32 
void fpu_context_save(fpu_context_t *fctx)
 34 
void fpu_disable(void)
33 
{
 35 
{  
- 
 
 36 
#ifdef HAVE_FPU
- 
 
 37 
    cp0_status_write(cp0_status_read() & ~cp0_status_fpu_bit);
- 
 
 38 
    if (THREAD && THREAD->pstate)
- 
 
 39 
        THREAD->pstate->status &= ~cp0_status_fpu_bit;
- 
 
 40 
#endif
34 
}
 41 
}
35 
 
 42 
 
36 
 
 - 
 
37 
void fpu_context_restore(fpu_context_t *fctx)
 43 
void fpu_enable(void)
38 
{
 44 
{
- 
 
 45 
#ifdef HAVE_FPU
- 
 
 46 
    cp0_status_write(cp0_status_read() | cp0_status_fpu_bit);
- 
 
 47 
    if (THREAD && THREAD->pstate)
- 
 
 48 
        THREAD->pstate->status |= cp0_status_fpu_bit;
- 
 
 49 
#endif
39 
}
 50 
}
40 
 
 51 
 
- 
 
 52 
void fpu_init(void)
- 
 
 53 
{
- 
 
 54 
    /* TODO: Zero all registers */
- 
 
 55 
}