[Xen-changelog] More hyperprivop stuff, fix set_rr, new get_rr

[BitKeeper Bot <riel@xxxxxxxxxxx>]

ChangeSet 1.1713.2.16, 2005/06/21 12:35:20-06:00, djm@xxxxxxxxxxxxxxx

        More hyperprivop stuff, fix set_rr, new get_rr
        Signed-off-by: Dan Magenheimer <dan.magenheimer@xxxxxx>



 hyperprivop.S |   38 ++++++++++++++++++++++++++++++++++----
 1 files changed, 34 insertions(+), 4 deletions(-)


diff -Nru a/xen/arch/ia64/hyperprivop.S b/xen/arch/ia64/hyperprivop.S
--- a/xen/arch/ia64/hyperprivop.S       2005-06-23 07:04:23 -04:00
+++ b/xen/arch/ia64/hyperprivop.S       2005-06-23 07:04:23 -04:00
@@ -105,6 +105,10 @@
        cmp.eq p7,p6=XEN_HYPER_SET_RR,r17
 (p7)   br.sptk.many hyper_set_rr;;
 
+       // HYPERPRIVOP_GET_RR?
+       cmp.eq p7,p6=XEN_HYPER_GET_RR,r17
+(p7)   br.sptk.many hyper_get_rr;;
+
        // if not one of the above, give up for now and do it the slow way
        br.sptk.many dispatch_break_fault ;;
 
@@ -820,11 +824,37 @@
        ;;
 END(hyper_set_itm)
 
-ENTRY(hyper_set_rr)
-#if 1
-       br.sptk.many dispatch_break_fault ;;
+ENTRY(hyper_get_rr)
+#ifdef FAST_HYPERPRIVOP_CNT
+       movl r20=fast_hyperpriv_cnt+(8*XEN_HYPER_GET_RR);;
+       ld8 r21=[r20];;
+       adds r21=1,r21;;
+       st8 [r20]=r21;;
 #endif
        extr.u r25=r8,61,3;;
+       adds r20=XSI_RR0_OFS-XSI_PSR_IC_OFS,r18 ;;
+       shl r25=r25,3;;
+       add r20=r20,r25;;
+       ld8 r8=[r20];;
+1:     mov r24=cr.ipsr
+       mov r25=cr.iip;;
+       extr.u r26=r24,41,2 ;;
+       cmp.eq p6,p7=2,r26 ;;
+(p6)   mov r26=0
+(p6)   adds r25=16,r25
+(p7)   adds r26=1,r26
+       ;;
+       dep r24=r26,r24,41,2
+       ;;
+       mov cr.ipsr=r24
+       mov cr.iip=r25
+       mov pr=r31,-1 ;;
+       rfi
+       ;;
+END(hyper_get_rr)
+
+ENTRY(hyper_set_rr)
+       extr.u r25=r8,61,3;;
        cmp.leu p7,p0=7,r25     // punt on setting rr7
 (p7)   br.spnt.many dispatch_break_fault ;;
 #ifdef FAST_HYPERPRIVOP_CNT
@@ -839,7 +869,7 @@
        ld4 r22=[r21];;
        adds r21=IA64_VCPU_ENDING_RID_OFFSET,r20;;
        ld4 r23=[r21];;
-       adds r24=IA64_VCPU_META_SAVED_RR0_OFFSET,r22;;
+       adds r24=IA64_VCPU_META_SAVED_RR0_OFFSET,r20;;
        add r22=r26,r22;;
        cmp.geu p6,p0=r22,r23   // if r9.rid + starting_rid >= ending_rid
 (p6)   br.cond.sptk.many 1f;   // this is an error, but just ignore/return

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