diff options
| -rw-r--r-- | xen/arch/ia64/hyperprivop.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/xen/arch/ia64/hyperprivop.S b/xen/arch/ia64/hyperprivop.S index 2adad6ce22..34e36783d1 100644 --- a/xen/arch/ia64/hyperprivop.S +++ b/xen/arch/ia64/hyperprivop.S @@ -66,6 +66,10 @@ GLOBAL_ENTRY(fast_hyperprivop) cmp.eq p7,p6=XEN_HYPER_RFI,r17 (p7) br.sptk.many hyper_rfi;; + // HYPERPRIVOP_GET_IVR? + cmp.eq p7,p6=XEN_HYPER_GET_IVR,r17 +(p7) br.sptk.many hyper_get_ivr;; + cmp.ne p7,p0=r20,r0 (p7) br.spnt.many dispatch_break_fault ;; @@ -589,3 +593,35 @@ ENTRY(hyper_set_tpr) rfi ;; END(hyper_set_tpr) + +ENTRY(hyper_get_ivr) + // when we get to here r20=~=interrupts pending + cmp.ne p7,p0=r20,r0 +(p7) br.spnt.many dispatch_break_fault ;; +#ifdef FAST_HYPERPRIVOP_CNT + movl r20=fast_hyperpriv_cnt+(8*XEN_HYPER_GET_IVR);; + ld8 r21=[r20];; + adds r21=1,r21;; + st8 [r20]=r21;; +#endif +// if we get to here, there are no interrupts pending so we +// force pending to zero and return SPURIOUS_VECTOR + adds r20=XSI_PEND_OFS-XSI_PSR_IC_OFS,r18 ;; + st4 [r20]=r0;; + mov r8=15;; + 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_ivr) |