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bitkeeper revision 1.1713.2.5 (42b2f7c3PDbPInUuxxYnJtABejaMCQ)
More hyperprivop stuff Signed-off-by: Dan Magenheimer <dan.magenheimer@hp.com>
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djm@kirby.fc.hp.com committed
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@@ -59,6 +59,7 @@ void foo(void)
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DEFINE(XSI_INCOMPL_REG_OFS, offsetof(vcpu_info_t, arch.incomplete_regframe));
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DEFINE(XSI_PEND_OFS, offsetof(vcpu_info_t, arch.pending_interruption));
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DEFINE(XSI_RR0_OFS, offsetof(vcpu_info_t, arch.rrs[0]));
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DEFINE(XSI_TPR_OFS, offsetof(vcpu_info_t, arch.tpr));
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//DEFINE(IA64_TASK_BLOCKED_OFFSET,offsetof (struct task_struct, blocked));
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//DEFINE(IA64_TASK_CLEAR_CHILD_TID_OFFSET,offsetof (struct task_struct, clear_child_tid));
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//DEFINE(IA64_TASK_GROUP_LEADER_OFFSET, offsetof (struct task_struct, group_leader));
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@@ -69,7 +69,6 @@ GLOBAL_ENTRY(fast_hyperprivop)
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cmp.ne p7,p0=r20,r0
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(p7) br.spnt.many dispatch_break_fault ;;
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// hard to test, because only called from rbs_switch
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// HYPERPRIVOP_COVER?
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cmp.eq p7,p6=XEN_HYPER_COVER,r17
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(p7) br.sptk.many hyper_cover;;
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@@ -82,6 +81,14 @@ GLOBAL_ENTRY(fast_hyperprivop)
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cmp.eq p7,p6=XEN_HYPER_RSM_DT,r17
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(p7) br.sptk.many hyper_rsm_dt;;
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// HYPERPRIVOP_GET_TPR?
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cmp.eq p7,p6=XEN_HYPER_GET_TPR,r17
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(p7) br.sptk.many hyper_get_tpr;;
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// HYPERPRIVOP_SET_TPR?
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cmp.eq p7,p6=XEN_HYPER_SET_TPR,r17
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(p7) br.sptk.many hyper_set_tpr;;
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// if not one of the above, give up for now and do it the slow way
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br.sptk.many dispatch_break_fault ;;
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@@ -455,7 +462,6 @@ ENTRY(hyper_cover)
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rfi
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;;
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#if 1
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// return from metaphysical mode (meta=1) to virtual mode (meta=0)
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ENTRY(hyper_ssm_dt)
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#ifdef FAST_HYPERPRIVOP_CNT
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@@ -526,4 +532,60 @@ ENTRY(hyper_rsm_dt)
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mov pr=r31,-1 ;;
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rfi
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;;
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ENTRY(hyper_get_tpr)
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#ifdef FAST_HYPERPRIVOP_CNT
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movl r20=fast_hyperpriv_cnt+(8*XEN_HYPER_GET_TPR);;
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ld8 r21=[r20];;
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adds r21=1,r21;;
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st8 [r20]=r21;;
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#endif
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mov r24=cr.ipsr
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mov r25=cr.iip;;
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adds r20=XSI_TPR_OFS-XSI_PSR_IC_OFS,r18 ;;
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ld8 r8=[r20];;
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extr.u r26=r24,41,2 ;;
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cmp.eq p6,p7=2,r26 ;;
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(p6) mov r26=0
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(p6) adds r25=16,r25
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(p7) adds r26=1,r26
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;;
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dep r24=r26,r24,41,2
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;;
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mov cr.ipsr=r24
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mov cr.iip=r25
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mov pr=r31,-1 ;;
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rfi
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;;
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END(hyper_get_tpr)
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// if we get to here, there are no interrupts pending so we
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// can change virtual tpr to any value without fear of provoking
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// (or accidentally missing) delivering an interrupt
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ENTRY(hyper_set_tpr)
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#ifdef FAST_HYPERPRIVOP_CNT
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movl r20=fast_hyperpriv_cnt+(8*XEN_HYPER_SET_TPR);;
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ld8 r21=[r20];;
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adds r21=1,r21;;
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st8 [r20]=r21;;
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#endif
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mov r24=cr.ipsr
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mov r25=cr.iip;;
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movl r27=0xff00;;
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adds r20=XSI_TPR_OFS-XSI_PSR_IC_OFS,r18 ;;
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andcm r8=r8,r27;;
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st8 [r20]=r8;;
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extr.u r26=r24,41,2 ;;
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cmp.eq p6,p7=2,r26 ;;
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(p6) mov r26=0
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(p6) adds r25=16,r25
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(p7) adds r26=1,r26
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;;
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dep r24=r26,r24,41,2
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;;
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mov cr.ipsr=r24
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mov cr.iip=r25
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mov pr=r31,-1 ;;
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rfi
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;;
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END(hyper_set_tpr)
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