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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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#include <arch/mm/vm.h>
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#include <arch/mm/as.h>
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#include <arch/mm/tlb.h>
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#include <arch/mm/tlb.h>
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#include <mm/tlb.h>
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#include <mm/vm.h>
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#include <mm/as.h>
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#include <arch/cp0.h>
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#include <arch/cp0.h>
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#include <arch.h>
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#include <arch.h>
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/** Install ASID of the current VM
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/** Install address space.
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 *
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 *
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 * Install ASID of the current VM.
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 * Install ASID and if necessary, purge TLB.
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 *
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 *
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 * @param vm VM structure.
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 * @param as Address space structure.
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 */
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 */
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void vm_install_arch(vm_t *vm)
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void as_install_arch(as_t *as)
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{
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{
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    entry_hi_t hi;
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    entry_hi_t hi;
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    ipl_t ipl;
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    ipl_t ipl;
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    /*
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     * If necessary, purge TLB.
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     */
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    tlb_invalidate_asid(as->asid);  /* TODO: do it only if necessary */
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    /*
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     * Install ASID.
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     */
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    hi.value = cp0_entry_hi_read();
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    hi.value = cp0_entry_hi_read();
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    ipl = interrupts_disable();
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    ipl = interrupts_disable();
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    spinlock_lock(&vm->lock);
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    spinlock_lock(&as->lock);
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    hi.asid = vm->asid;
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    hi.asid = as->asid;
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    cp0_entry_hi_write(hi.value);  
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    cp0_entry_hi_write(hi.value);  
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    spinlock_unlock(&vm->lock);
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    spinlock_unlock(&as->lock);
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    interrupts_restore(ipl);
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    interrupts_restore(ipl);
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}
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}