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Subject[PATCH 36/45] KVM: ia64: Add interruption vector table for vmm
Date
From: Xiantao Zhang <xiantao.zhang@intel.com>

vmm_ivt.S includes an ivt for vmm use.

Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
arch/ia64/kvm/vmm_ivt.S | 1424 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 1424 insertions(+), 0 deletions(-)
create mode 100644 arch/ia64/kvm/vmm_ivt.S
diff --git a/arch/ia64/kvm/vmm_ivt.S b/arch/ia64/kvm/vmm_ivt.S
new file mode 100644
index 0000000..3ee5f48
--- /dev/null
+++ b/arch/ia64/kvm/vmm_ivt.S
@@ -0,0 +1,1424 @@
+/*
+ * /ia64/kvm_ivt.S
+ *
+ * Copyright (C) 1998-2001, 2003 Hewlett-Packard Co
+ * Stephane Eranian <eranian@hpl.hp.com>
+ * David Mosberger <davidm@hpl.hp.com>
+ * Copyright (C) 2000, 2002-2003 Intel Co
+ * Asit Mallick <asit.k.mallick@intel.com>
+ * Suresh Siddha <suresh.b.siddha@intel.com>
+ * Kenneth Chen <kenneth.w.chen@intel.com>
+ * Fenghua Yu <fenghua.yu@intel.com>
+ *
+ *
+ * 00/08/23 Asit Mallick <asit.k.mallick@intel.com> TLB handling
+ * for SMP
+ * 00/12/20 David Mosberger-Tang <davidm@hpl.hp.com> DTLB/ITLB
+ * handler now uses virtual PT.
+ *
+ * 07/6/20 Xuefei Xu (Anthony Xu) (anthony.xu@intel.com)
+ * Supporting Intel virtualization architecture
+ *
+ */
+
+/*
+ * This file defines the interruption vector table used by the CPU.
+ * It does not include one entry per possible cause of interruption.
+ *
+ * The first 20 entries of the table contain 64 bundles each while the
+ * remaining 48 entries contain only 16 bundles each.
+ *
+ * The 64 bundles are used to allow inlining the whole handler for
+ * critical
+ * interruptions like TLB misses.
+ *
+ * For each entry, the comment is as follows:
+ *
+ * // 0x1c00 Entry 7 (size 64 bundles) Data Key Miss
+ * (12,51)
+ * entry offset ----/ / / /
+ * /
+ * entry number ---------/ / /
+ * /
+ * size of the entry -------------/ /
+ * /
+ * vector name -------------------------------------/
+ * /
+ * interruptions triggering this vector
+ * ----------------------/
+ *
+ * The table is 32KB in size and must be aligned on 32KB
+ * boundary.
+ * (The CPU ignores the 15 lower bits of the address)
+ *
+ * Table is based upon EAS2.6 (Oct 1999)
+ */
+
+
+#include <asm/asmmacro.h>
+#include <asm/cache.h>
+#include <asm/pgtable.h>
+
+#include "asm-offsets.h"
+#include "vcpu.h"
+#include "kvm_minstate.h"
+#include "vti.h"
+
+#if 1
+# define PSR_DEFAULT_BITS psr.ac
+#else
+# define PSR_DEFAULT_BITS 0
+#endif
+
+
+#define KVM_FAULT(n) \
+ kvm_fault_##n:; \
+ mov r19=n;; \
+ br.sptk.many kvm_fault_##n; \
+ ;; \
+
+
+#define KVM_REFLECT(n) \
+ mov r31=pr; \
+ mov r19=n; /* prepare to save predicates */ \
+ mov r29=cr.ipsr; \
+ ;; \
+ tbit.z p6,p7=r29,IA64_PSR_VM_BIT; \
+(p7)br.sptk.many kvm_dispatch_reflection; \
+ br.sptk.many kvm_panic; \
+
+
+GLOBAL_ENTRY(kvm_panic)
+ br.sptk.many kvm_panic
+ ;;
+END(kvm_panic)
+
+
+
+
+
+ .section .text.ivt,"ax"
+
+ .align 32768 // align on 32KB boundary
+ .global kvm_ia64_ivt
+kvm_ia64_ivt:
+///////////////////////////////////////////////////////////////
+// 0x0000 Entry 0 (size 64 bundles) VHPT Translation (8,20,47)
+ENTRY(kvm_vhpt_miss)
+ KVM_FAULT(0)
+END(kvm_vhpt_miss)
+
+
+ .org kvm_ia64_ivt+0x400
+////////////////////////////////////////////////////////////////
+// 0x0400 Entry 1 (size 64 bundles) ITLB (21)
+ENTRY(kvm_itlb_miss)
+ mov r31 = pr
+ mov r29=cr.ipsr;
+ ;;
+ tbit.z p6,p7=r29,IA64_PSR_VM_BIT;
+ (p6) br.sptk kvm_alt_itlb_miss
+ mov r19 = 1
+ br.sptk kvm_itlb_miss_dispatch
+ KVM_FAULT(1);
+END(kvm_itlb_miss)
+
+ .org kvm_ia64_ivt+0x0800
+//////////////////////////////////////////////////////////////////
+// 0x0800 Entry 2 (size 64 bundles) DTLB (9,48)
+ENTRY(kvm_dtlb_miss)
+ mov r31 = pr
+ mov r29=cr.ipsr;
+ ;;
+ tbit.z p6,p7=r29,IA64_PSR_VM_BIT;
+(p6)br.sptk kvm_alt_dtlb_miss
+ br.sptk kvm_dtlb_miss_dispatch
+END(kvm_dtlb_miss)
+
+ .org kvm_ia64_ivt+0x0c00
+////////////////////////////////////////////////////////////////////
+// 0x0c00 Entry 3 (size 64 bundles) Alt ITLB (19)
+ENTRY(kvm_alt_itlb_miss)
+ mov r16=cr.ifa // get address that caused the TLB miss
+ ;;
+ movl r17=PAGE_KERNEL
+ mov r24=cr.ipsr
+ movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
+ ;;
+ and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
+ ;;
+ or r19=r17,r19 // insert PTE control bits into r19
+ ;;
+ movl r20=IA64_GRANULE_SHIFT<<2
+ ;;
+ mov cr.itir=r20
+ ;;
+ itc.i r19 // insert the TLB entry
+ mov pr=r31,-1
+ rfi
+END(kvm_alt_itlb_miss)
+
+ .org kvm_ia64_ivt+0x1000
+/////////////////////////////////////////////////////////////////////
+// 0x1000 Entry 4 (size 64 bundles) Alt DTLB (7,46)
+ENTRY(kvm_alt_dtlb_miss)
+ mov r16=cr.ifa // get address that caused the TLB miss
+ ;;
+ movl r17=PAGE_KERNEL
+ movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
+ mov r24=cr.ipsr
+ ;;
+ and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
+ ;;
+ or r19=r19,r17 // insert PTE control bits into r19
+ ;;
+ movl r20=IA64_GRANULE_SHIFT<<2
+ ;;
+ mov cr.itir=r20
+ ;;
+ itc.d r19 // insert the TLB entry
+ mov pr=r31,-1
+ rfi
+END(kvm_alt_dtlb_miss)
+
+ .org kvm_ia64_ivt+0x1400
+//////////////////////////////////////////////////////////////////////
+// 0x1400 Entry 5 (size 64 bundles) Data nested TLB (6,45)
+ENTRY(kvm_nested_dtlb_miss)
+ KVM_FAULT(5)
+END(kvm_nested_dtlb_miss)
+
+ .org kvm_ia64_ivt+0x1800
+/////////////////////////////////////////////////////////////////////
+// 0x1800 Entry 6 (size 64 bundles) Instruction Key Miss (24)
+ENTRY(kvm_ikey_miss)
+ KVM_REFLECT(6)
+END(kvm_ikey_miss)
+
+ .org kvm_ia64_ivt+0x1c00
+/////////////////////////////////////////////////////////////////////
+// 0x1c00 Entry 7 (size 64 bundles) Data Key Miss (12,51)
+ENTRY(kvm_dkey_miss)
+ KVM_REFLECT(7)
+END(kvm_dkey_miss)
+
+ .org kvm_ia64_ivt+0x2000
+////////////////////////////////////////////////////////////////////
+// 0x2000 Entry 8 (size 64 bundles) Dirty-bit (54)
+ENTRY(kvm_dirty_bit)
+ KVM_REFLECT(8)
+END(kvm_dirty_bit)
+
+ .org kvm_ia64_ivt+0x2400
+////////////////////////////////////////////////////////////////////
+// 0x2400 Entry 9 (size 64 bundles) Instruction Access-bit (27)
+ENTRY(kvm_iaccess_bit)
+ KVM_REFLECT(9)
+END(kvm_iaccess_bit)
+
+ .org kvm_ia64_ivt+0x2800
+///////////////////////////////////////////////////////////////////
+// 0x2800 Entry 10 (size 64 bundles) Data Access-bit (15,55)
+ENTRY(kvm_daccess_bit)
+ KVM_REFLECT(10)
+END(kvm_daccess_bit)
+
+ .org kvm_ia64_ivt+0x2c00
+/////////////////////////////////////////////////////////////////
+// 0x2c00 Entry 11 (size 64 bundles) Break instruction (33)
+ENTRY(kvm_break_fault)
+ mov r31=pr
+ mov r19=11
+ mov r29=cr.ipsr
+ ;;
+ KVM_SAVE_MIN_WITH_COVER_R19
+ ;;
+ alloc r14=ar.pfs,0,0,4,0 // now it's safe (must be first in insn group!)
+ mov out0=cr.ifa
+ mov out2=cr.isr // FIXME: pity to make this slow access twice
+ mov out3=cr.iim // FIXME: pity to make this slow access twice
+ adds r3=8,r2 // set up second base pointer
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i // guarantee that interruption collection is on
+ ;;
+ //(p15)ssm psr.i // restore psr.i
+ addl r14=@gprel(ia64_leave_hypervisor),gp
+ ;;
+ KVM_SAVE_REST
+ mov rp=r14
+ ;;
+ adds out1=16,sp
+ br.call.sptk.many b6=kvm_ia64_handle_break
+ ;;
+END(kvm_break_fault)
+
+ .org kvm_ia64_ivt+0x3000
+/////////////////////////////////////////////////////////////////
+// 0x3000 Entry 12 (size 64 bundles) External Interrupt (4)
+ENTRY(kvm_interrupt)
+ mov r31=pr // prepare to save predicates
+ mov r19=12
+ mov r29=cr.ipsr
+ ;;
+ tbit.z p6,p7=r29,IA64_PSR_VM_BIT
+ tbit.z p0,p15=r29,IA64_PSR_I_BIT
+ ;;
+(p7) br.sptk kvm_dispatch_interrupt
+ ;;
+ mov r27=ar.rsc /* M */
+ mov r20=r1 /* A */
+ mov r25=ar.unat /* M */
+ mov r26=ar.pfs /* I */
+ mov r28=cr.iip /* M */
+ cover /* B (or nothing) */
+ ;;
+ mov r1=sp
+ ;;
+ invala /* M */
+ mov r30=cr.ifs
+ ;;
+ addl r1=-VMM_PT_REGS_SIZE,r1
+ ;;
+ adds r17=2*L1_CACHE_BYTES,r1 /* really: biggest cache-line size */
+ adds r16=PT(CR_IPSR),r1
+ ;;
+ lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES
+ st8 [r16]=r29 /* save cr.ipsr */
+ ;;
+ lfetch.fault.excl.nt1 [r17]
+ mov r29=b0
+ ;;
+ adds r16=PT(R8),r1 /* initialize first base pointer */
+ adds r17=PT(R9),r1 /* initialize second base pointer */
+ mov r18=r0 /* make sure r18 isn't NaT */
+ ;;
+.mem.offset 0,0; st8.spill [r16]=r8,16
+.mem.offset 8,0; st8.spill [r17]=r9,16
+ ;;
+.mem.offset 0,0; st8.spill [r16]=r10,24
+.mem.offset 8,0; st8.spill [r17]=r11,24
+ ;;
+ st8 [r16]=r28,16 /* save cr.iip */
+ st8 [r17]=r30,16 /* save cr.ifs */
+ mov r8=ar.fpsr /* M */
+ mov r9=ar.csd
+ mov r10=ar.ssd
+ movl r11=FPSR_DEFAULT /* L-unit */
+ ;;
+ st8 [r16]=r25,16 /* save ar.unat */
+ st8 [r17]=r26,16 /* save ar.pfs */
+ shl r18=r18,16 /* compute ar.rsc to be used for "loadrs" */
+ ;;
+ st8 [r16]=r27,16 /* save ar.rsc */
+ adds r17=16,r17 /* skip over ar_rnat field */
+ ;;
+ st8 [r17]=r31,16 /* save predicates */
+ adds r16=16,r16 /* skip over ar_bspstore field */
+ ;;
+ st8 [r16]=r29,16 /* save b0 */
+ st8 [r17]=r18,16 /* save ar.rsc value for "loadrs" */
+ ;;
+.mem.offset 0,0; st8.spill [r16]=r20,16 /* save original r1 */
+.mem.offset 8,0; st8.spill [r17]=r12,16
+ adds r12=-16,r1
+ /* switch to kernel memory stack (with 16 bytes of scratch) */
+ ;;
+.mem.offset 0,0; st8.spill [r16]=r13,16
+.mem.offset 8,0; st8.spill [r17]=r8,16 /* save ar.fpsr */
+ ;;
+.mem.offset 0,0; st8.spill [r16]=r15,16
+.mem.offset 8,0; st8.spill [r17]=r14,16
+ dep r14=-1,r0,60,4
+ ;;
+.mem.offset 0,0; st8.spill [r16]=r2,16
+.mem.offset 8,0; st8.spill [r17]=r3,16
+ adds r2=VMM_PT_REGS_R16_OFFSET,r1
+ adds r14 = VMM_VCPU_GP_OFFSET,r13
+ ;;
+ mov r8=ar.ccv
+ ld8 r14 = [r14]
+ ;;
+ mov r1=r14 /* establish kernel global pointer */
+ ;; \
+ bsw.1
+ ;;
+ alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
+ mov out0=r13
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i
+ ;;
+ //(p15) ssm psr.i
+ adds r3=8,r2 // set up second base pointer for SAVE_REST
+ srlz.i // ensure everybody knows psr.ic is back on
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r16,16
+.mem.offset 8,0; st8.spill [r3]=r17,16
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r18,16
+.mem.offset 8,0; st8.spill [r3]=r19,16
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r20,16
+.mem.offset 8,0; st8.spill [r3]=r21,16
+ mov r18=b6
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r22,16
+.mem.offset 8,0; st8.spill [r3]=r23,16
+ mov r19=b7
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r24,16
+.mem.offset 8,0; st8.spill [r3]=r25,16
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r26,16
+.mem.offset 8,0; st8.spill [r3]=r27,16
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r28,16
+.mem.offset 8,0; st8.spill [r3]=r29,16
+ ;;
+.mem.offset 0,0; st8.spill [r2]=r30,16
+.mem.offset 8,0; st8.spill [r3]=r31,32
+ ;;
+ mov ar.fpsr=r11 /* M-unit */
+ st8 [r2]=r8,8 /* ar.ccv */
+ adds r24=PT(B6)-PT(F7),r3
+ ;;
+ stf.spill [r2]=f6,32
+ stf.spill [r3]=f7,32
+ ;;
+ stf.spill [r2]=f8,32
+ stf.spill [r3]=f9,32
+ ;;
+ stf.spill [r2]=f10
+ stf.spill [r3]=f11
+ adds r25=PT(B7)-PT(F11),r3
+ ;;
+ st8 [r24]=r18,16 /* b6 */
+ st8 [r25]=r19,16 /* b7 */
+ ;;
+ st8 [r24]=r9 /* ar.csd */
+ st8 [r25]=r10 /* ar.ssd */
+ ;;
+ srlz.d // make sure we see the effect of cr.ivr
+ addl r14=@gprel(ia64_leave_nested),gp
+ ;;
+ mov rp=r14
+ br.call.sptk.many b6=kvm_ia64_handle_irq
+ ;;
+END(kvm_interrupt)
+
+ .global kvm_dispatch_vexirq
+ .org kvm_ia64_ivt+0x3400
+//////////////////////////////////////////////////////////////////////
+// 0x3400 Entry 13 (size 64 bundles) Reserved
+ENTRY(kvm_virtual_exirq)
+ mov r31=pr
+ mov r19=13
+ mov r30 =r0
+ ;;
+kvm_dispatch_vexirq:
+ cmp.eq p6,p0 = 1,r30
+ ;;
+(p6)add r29 = VMM_VCPU_SAVED_GP_OFFSET,r21
+ ;;
+(p6)ld8 r1 = [r29]
+ ;;
+ KVM_SAVE_MIN_WITH_COVER_R19
+ alloc r14=ar.pfs,0,0,1,0
+ mov out0=r13
+
+ ssm psr.ic
+ ;;
+ srlz.i // guarantee that interruption collection is on
+ ;;
+ //(p15) ssm psr.i // restore psr.i
+ adds r3=8,r2 // set up second base pointer
+ ;;
+ KVM_SAVE_REST
+ addl r14=@gprel(ia64_leave_hypervisor),gp
+ ;;
+ mov rp=r14
+ br.call.sptk.many b6=kvm_vexirq
+END(kvm_virtual_exirq)
+
+ .org kvm_ia64_ivt+0x3800
+/////////////////////////////////////////////////////////////////////
+// 0x3800 Entry 14 (size 64 bundles) Reserved
+ KVM_FAULT(14)
+ // this code segment is from 2.6.16.13
+
+
+ .org kvm_ia64_ivt+0x3c00
+///////////////////////////////////////////////////////////////////////
+// 0x3c00 Entry 15 (size 64 bundles) Reserved
+ KVM_FAULT(15)
+
+
+ .org kvm_ia64_ivt+0x4000
+///////////////////////////////////////////////////////////////////////
+// 0x4000 Entry 16 (size 64 bundles) Reserved
+ KVM_FAULT(16)
+
+ .org kvm_ia64_ivt+0x4400
+//////////////////////////////////////////////////////////////////////
+// 0x4400 Entry 17 (size 64 bundles) Reserved
+ KVM_FAULT(17)
+
+ .org kvm_ia64_ivt+0x4800
+//////////////////////////////////////////////////////////////////////
+// 0x4800 Entry 18 (size 64 bundles) Reserved
+ KVM_FAULT(18)
+
+ .org kvm_ia64_ivt+0x4c00
+//////////////////////////////////////////////////////////////////////
+// 0x4c00 Entry 19 (size 64 bundles) Reserved
+ KVM_FAULT(19)
+
+ .org kvm_ia64_ivt+0x5000
+//////////////////////////////////////////////////////////////////////
+// 0x5000 Entry 20 (size 16 bundles) Page Not Present
+ENTRY(kvm_page_not_present)
+ KVM_REFLECT(20)
+END(kvm_page_not_present)
+
+ .org kvm_ia64_ivt+0x5100
+///////////////////////////////////////////////////////////////////////
+// 0x5100 Entry 21 (size 16 bundles) Key Permission vector
+ENTRY(kvm_key_permission)
+ KVM_REFLECT(21)
+END(kvm_key_permission)
+
+ .org kvm_ia64_ivt+0x5200
+//////////////////////////////////////////////////////////////////////
+// 0x5200 Entry 22 (size 16 bundles) Instruction Access Rights (26)
+ENTRY(kvm_iaccess_rights)
+ KVM_REFLECT(22)
+END(kvm_iaccess_rights)
+
+ .org kvm_ia64_ivt+0x5300
+//////////////////////////////////////////////////////////////////////
+// 0x5300 Entry 23 (size 16 bundles) Data Access Rights (14,53)
+ENTRY(kvm_daccess_rights)
+ KVM_REFLECT(23)
+END(kvm_daccess_rights)
+
+ .org kvm_ia64_ivt+0x5400
+/////////////////////////////////////////////////////////////////////
+// 0x5400 Entry 24 (size 16 bundles) General Exception (5,32,34,36,38,39)
+ENTRY(kvm_general_exception)
+ KVM_REFLECT(24)
+ KVM_FAULT(24)
+END(kvm_general_exception)
+
+ .org kvm_ia64_ivt+0x5500
+//////////////////////////////////////////////////////////////////////
+// 0x5500 Entry 25 (size 16 bundles) Disabled FP-Register (35)
+ENTRY(kvm_disabled_fp_reg)
+ KVM_REFLECT(25)
+END(kvm_disabled_fp_reg)
+
+ .org kvm_ia64_ivt+0x5600
+////////////////////////////////////////////////////////////////////
+// 0x5600 Entry 26 (size 16 bundles) Nat Consumption (11,23,37,50)
+ENTRY(kvm_nat_consumption)
+ KVM_REFLECT(26)
+END(kvm_nat_consumption)
+
+ .org kvm_ia64_ivt+0x5700
+/////////////////////////////////////////////////////////////////////
+// 0x5700 Entry 27 (size 16 bundles) Speculation (40)
+ENTRY(kvm_speculation_vector)
+ KVM_REFLECT(27)
+END(kvm_speculation_vector)
+
+ .org kvm_ia64_ivt+0x5800
+/////////////////////////////////////////////////////////////////////
+// 0x5800 Entry 28 (size 16 bundles) Reserved
+ KVM_FAULT(28)
+
+ .org kvm_ia64_ivt+0x5900
+///////////////////////////////////////////////////////////////////
+// 0x5900 Entry 29 (size 16 bundles) Debug (16,28,56)
+ENTRY(kvm_debug_vector)
+ KVM_FAULT(29)
+END(kvm_debug_vector)
+
+ .org kvm_ia64_ivt+0x5a00
+///////////////////////////////////////////////////////////////
+// 0x5a00 Entry 30 (size 16 bundles) Unaligned Reference (57)
+ENTRY(kvm_unaligned_access)
+ KVM_REFLECT(30)
+END(kvm_unaligned_access)
+
+ .org kvm_ia64_ivt+0x5b00
+//////////////////////////////////////////////////////////////////////
+// 0x5b00 Entry 31 (size 16 bundles) Unsupported Data Reference (57)
+ENTRY(kvm_unsupported_data_reference)
+ KVM_REFLECT(31)
+END(kvm_unsupported_data_reference)
+
+ .org kvm_ia64_ivt+0x5c00
+////////////////////////////////////////////////////////////////////
+// 0x5c00 Entry 32 (size 16 bundles) Floating Point FAULT (65)
+ENTRY(kvm_floating_point_fault)
+ KVM_REFLECT(32)
+END(kvm_floating_point_fault)
+
+ .org kvm_ia64_ivt+0x5d00
+/////////////////////////////////////////////////////////////////////
+// 0x5d00 Entry 33 (size 16 bundles) Floating Point Trap (66)
+ENTRY(kvm_floating_point_trap)
+ KVM_REFLECT(33)
+END(kvm_floating_point_trap)
+
+ .org kvm_ia64_ivt+0x5e00
+//////////////////////////////////////////////////////////////////////
+// 0x5e00 Entry 34 (size 16 bundles) Lower Privilege Transfer Trap (66)
+ENTRY(kvm_lower_privilege_trap)
+ KVM_REFLECT(34)
+END(kvm_lower_privilege_trap)
+
+ .org kvm_ia64_ivt+0x5f00
+//////////////////////////////////////////////////////////////////////
+// 0x5f00 Entry 35 (size 16 bundles) Taken Branch Trap (68)
+ENTRY(kvm_taken_branch_trap)
+ KVM_REFLECT(35)
+END(kvm_taken_branch_trap)
+
+ .org kvm_ia64_ivt+0x6000
+////////////////////////////////////////////////////////////////////
+// 0x6000 Entry 36 (size 16 bundles) Single Step Trap (69)
+ENTRY(kvm_single_step_trap)
+ KVM_REFLECT(36)
+END(kvm_single_step_trap)
+ .global kvm_virtualization_fault_back
+ .org kvm_ia64_ivt+0x6100
+/////////////////////////////////////////////////////////////////////
+// 0x6100 Entry 37 (size 16 bundles) Virtualization Fault
+ENTRY(kvm_virtualization_fault)
+ mov r31=pr
+ adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21
+ ;;
+ st8 [r16] = r1
+ adds r17 = VMM_VCPU_GP_OFFSET, r21
+ ;;
+ ld8 r1 = [r17]
+ cmp.eq p6,p0=EVENT_MOV_FROM_AR,r24
+ cmp.eq p7,p0=EVENT_MOV_FROM_RR,r24
+ cmp.eq p8,p0=EVENT_MOV_TO_RR,r24
+ cmp.eq p9,p0=EVENT_RSM,r24
+ cmp.eq p10,p0=EVENT_SSM,r24
+ cmp.eq p11,p0=EVENT_MOV_TO_PSR,r24
+ cmp.eq p12,p0=EVENT_THASH,r24
+ (p6) br.dptk.many kvm_asm_mov_from_ar
+ (p7) br.dptk.many kvm_asm_mov_from_rr
+ (p8) br.dptk.many kvm_asm_mov_to_rr
+ (p9) br.dptk.many kvm_asm_rsm
+ (p10) br.dptk.many kvm_asm_ssm
+ (p11) br.dptk.many kvm_asm_mov_to_psr
+ (p12) br.dptk.many kvm_asm_thash
+ ;;
+kvm_virtualization_fault_back:
+ adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21
+ ;;
+ ld8 r1 = [r16]
+ ;;
+ mov r19=37
+ adds r16 = VMM_VCPU_CAUSE_OFFSET,r21
+ adds r17 = VMM_VCPU_OPCODE_OFFSET,r21
+ ;;
+ st8 [r16] = r24
+ st8 [r17] = r25
+ ;;
+ cmp.ne p6,p0=EVENT_RFI, r24
+ (p6) br.sptk kvm_dispatch_virtualization_fault
+ ;;
+ adds r18=VMM_VPD_BASE_OFFSET,r21
+ ;;
+ ld8 r18=[r18]
+ ;;
+ adds r18=VMM_VPD_VIFS_OFFSET,r18
+ ;;
+ ld8 r18=[r18]
+ ;;
+ tbit.z p6,p0=r18,63
+ (p6) br.sptk kvm_dispatch_virtualization_fault
+ ;;
+ //if vifs.v=1 desert current register frame
+ alloc r18=ar.pfs,0,0,0,0
+ br.sptk kvm_dispatch_virtualization_fault
+END(kvm_virtualization_fault)
+
+ .org kvm_ia64_ivt+0x6200
+//////////////////////////////////////////////////////////////
+// 0x6200 Entry 38 (size 16 bundles) Reserved
+ KVM_FAULT(38)
+
+ .org kvm_ia64_ivt+0x6300
+/////////////////////////////////////////////////////////////////
+// 0x6300 Entry 39 (size 16 bundles) Reserved
+ KVM_FAULT(39)
+
+ .org kvm_ia64_ivt+0x6400
+/////////////////////////////////////////////////////////////////
+// 0x6400 Entry 40 (size 16 bundles) Reserved
+ KVM_FAULT(40)
+
+ .org kvm_ia64_ivt+0x6500
+//////////////////////////////////////////////////////////////////
+// 0x6500 Entry 41 (size 16 bundles) Reserved
+ KVM_FAULT(41)
+
+ .org kvm_ia64_ivt+0x6600
+//////////////////////////////////////////////////////////////////
+// 0x6600 Entry 42 (size 16 bundles) Reserved
+ KVM_FAULT(42)
+
+ .org kvm_ia64_ivt+0x6700
+//////////////////////////////////////////////////////////////////
+// 0x6700 Entry 43 (size 16 bundles) Reserved
+ KVM_FAULT(43)
+
+ .org kvm_ia64_ivt+0x6800
+//////////////////////////////////////////////////////////////////
+// 0x6800 Entry 44 (size 16 bundles) Reserved
+ KVM_FAULT(44)
+
+ .org kvm_ia64_ivt+0x6900
+///////////////////////////////////////////////////////////////////
+// 0x6900 Entry 45 (size 16 bundles) IA-32 Exeception
+//(17,18,29,41,42,43,44,58,60,61,62,72,73,75,76,77)
+ENTRY(kvm_ia32_exception)
+ KVM_FAULT(45)
+END(kvm_ia32_exception)
+
+ .org kvm_ia64_ivt+0x6a00
+////////////////////////////////////////////////////////////////////
+// 0x6a00 Entry 46 (size 16 bundles) IA-32 Intercept (30,31,59,70,71)
+ENTRY(kvm_ia32_intercept)
+ KVM_FAULT(47)
+END(kvm_ia32_intercept)
+
+ .org kvm_ia64_ivt+0x6c00
+/////////////////////////////////////////////////////////////////////
+// 0x6c00 Entry 48 (size 16 bundles) Reserved
+ KVM_FAULT(48)
+
+ .org kvm_ia64_ivt+0x6d00
+//////////////////////////////////////////////////////////////////////
+// 0x6d00 Entry 49 (size 16 bundles) Reserved
+ KVM_FAULT(49)
+
+ .org kvm_ia64_ivt+0x6e00
+//////////////////////////////////////////////////////////////////////
+// 0x6e00 Entry 50 (size 16 bundles) Reserved
+ KVM_FAULT(50)
+
+ .org kvm_ia64_ivt+0x6f00
+/////////////////////////////////////////////////////////////////////
+// 0x6f00 Entry 51 (size 16 bundles) Reserved
+ KVM_FAULT(52)
+
+ .org kvm_ia64_ivt+0x7100
+////////////////////////////////////////////////////////////////////
+// 0x7100 Entry 53 (size 16 bundles) Reserved
+ KVM_FAULT(53)
+
+ .org kvm_ia64_ivt+0x7200
+/////////////////////////////////////////////////////////////////////
+// 0x7200 Entry 54 (size 16 bundles) Reserved
+ KVM_FAULT(54)
+
+ .org kvm_ia64_ivt+0x7300
+////////////////////////////////////////////////////////////////////
+// 0x7300 Entry 55 (size 16 bundles) Reserved
+ KVM_FAULT(55)
+
+ .org kvm_ia64_ivt+0x7400
+////////////////////////////////////////////////////////////////////
+// 0x7400 Entry 56 (size 16 bundles) Reserved
+ KVM_FAULT(56)
+
+ .org kvm_ia64_ivt+0x7500
+/////////////////////////////////////////////////////////////////////
+// 0x7500 Entry 57 (size 16 bundles) Reserved
+ KVM_FAULT(57)
+
+ .org kvm_ia64_ivt+0x7600
+/////////////////////////////////////////////////////////////////////
+// 0x7600 Entry 58 (size 16 bundles) Reserved
+ KVM_FAULT(58)
+
+ .org kvm_ia64_ivt+0x7700
+////////////////////////////////////////////////////////////////////
+// 0x7700 Entry 59 (size 16 bundles) Reserved
+ KVM_FAULT(59)
+
+ .org kvm_ia64_ivt+0x7800
+////////////////////////////////////////////////////////////////////
+// 0x7800 Entry 60 (size 16 bundles) Reserved
+ KVM_FAULT(60)
+
+ .org kvm_ia64_ivt+0x7900
+/////////////////////////////////////////////////////////////////////
+// 0x7900 Entry 61 (size 16 bundles) Reserved
+ KVM_FAULT(61)
+
+ .org kvm_ia64_ivt+0x7a00
+/////////////////////////////////////////////////////////////////////
+// 0x7a00 Entry 62 (size 16 bundles) Reserved
+ KVM_FAULT(62)
+
+ .org kvm_ia64_ivt+0x7b00
+/////////////////////////////////////////////////////////////////////
+// 0x7b00 Entry 63 (size 16 bundles) Reserved
+ KVM_FAULT(63)
+
+ .org kvm_ia64_ivt+0x7c00
+////////////////////////////////////////////////////////////////////
+// 0x7c00 Entry 64 (size 16 bundles) Reserved
+ KVM_FAULT(64)
+
+ .org kvm_ia64_ivt+0x7d00
+/////////////////////////////////////////////////////////////////////
+// 0x7d00 Entry 65 (size 16 bundles) Reserved
+ KVM_FAULT(65)
+
+ .org kvm_ia64_ivt+0x7e00
+/////////////////////////////////////////////////////////////////////
+// 0x7e00 Entry 66 (size 16 bundles) Reserved
+ KVM_FAULT(66)
+
+ .org kvm_ia64_ivt+0x7f00
+////////////////////////////////////////////////////////////////////
+// 0x7f00 Entry 67 (size 16 bundles) Reserved
+ KVM_FAULT(67)
+
+ .org kvm_ia64_ivt+0x8000
+// There is no particular reason for this code to be here, other than that
+// there happens to be space here that would go unused otherwise. If this
+// fault ever gets "unreserved", simply moved the following code to a more
+// suitable spot...
+
+
+ENTRY(kvm_dtlb_miss_dispatch)
+ mov r19 = 2
+ KVM_SAVE_MIN_WITH_COVER_R19
+ alloc r14=ar.pfs,0,0,3,0
+ mov out0=cr.ifa
+ mov out1=r15
+ adds r3=8,r2 // set up second base pointer
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i // guarantee that interruption collection is on
+ ;;
+ //(p15) ssm psr.i // restore psr.i
+ addl r14=@gprel(ia64_leave_hypervisor_prepare),gp
+ ;;
+ KVM_SAVE_REST
+ KVM_SAVE_EXTRA
+ mov rp=r14
+ ;;
+ adds out2=16,r12
+ br.call.sptk.many b6=kvm_page_fault
+END(kvm_dtlb_miss_dispatch)
+
+ENTRY(kvm_itlb_miss_dispatch)
+
+ KVM_SAVE_MIN_WITH_COVER_R19
+ alloc r14=ar.pfs,0,0,3,0
+ mov out0=cr.ifa
+ mov out1=r15
+ adds r3=8,r2 // set up second base pointer
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i // guarantee that interruption collection is on
+ ;;
+ //(p15) ssm psr.i // restore psr.i
+ addl r14=@gprel(ia64_leave_hypervisor),gp
+ ;;
+ KVM_SAVE_REST
+ mov rp=r14
+ ;;
+ adds out2=16,r12
+ br.call.sptk.many b6=kvm_page_fault
+END(kvm_itlb_miss_dispatch)
+
+ENTRY(kvm_dispatch_reflection)
+ /*
+ * Input:
+ * psr.ic: off
+ * r19: intr type (offset into ivt, see ia64_int.h)
+ * r31: contains saved predicates (pr)
+ */
+ KVM_SAVE_MIN_WITH_COVER_R19
+ alloc r14=ar.pfs,0,0,5,0
+ mov out0=cr.ifa
+ mov out1=cr.isr
+ mov out2=cr.iim
+ mov out3=r15
+ adds r3=8,r2 // set up second base pointer
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i // guarantee that interruption collection is on
+ ;;
+ //(p15) ssm psr.i // restore psr.i
+ addl r14=@gprel(ia64_leave_hypervisor),gp
+ ;;
+ KVM_SAVE_REST
+ mov rp=r14
+ ;;
+ adds out4=16,r12
+ br.call.sptk.many b6=reflect_interruption
+END(kvm_dispatch_reflection)
+
+ENTRY(kvm_dispatch_virtualization_fault)
+ adds r16 = VMM_VCPU_CAUSE_OFFSET,r21
+ adds r17 = VMM_VCPU_OPCODE_OFFSET,r21
+ ;;
+ st8 [r16] = r24
+ st8 [r17] = r25
+ ;;
+ KVM_SAVE_MIN_WITH_COVER_R19
+ ;;
+ alloc r14=ar.pfs,0,0,2,0 // now it's safe (must be first in insn group!)
+ mov out0=r13 //vcpu
+ adds r3=8,r2 // set up second base pointer
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i // guarantee that interruption collection is on
+ ;;
+ //(p15) ssm psr.i // restore psr.i
+ addl r14=@gprel(ia64_leave_hypervisor_prepare),gp
+ ;;
+ KVM_SAVE_REST
+ KVM_SAVE_EXTRA
+ mov rp=r14
+ ;;
+ adds out1=16,sp //regs
+ br.call.sptk.many b6=kvm_emulate
+END(kvm_dispatch_virtualization_fault)
+
+
+ENTRY(kvm_dispatch_interrupt)
+ KVM_SAVE_MIN_WITH_COVER_R19 // uses r31; defines r2 and r3
+ ;;
+ alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
+ //mov out0=cr.ivr // pass cr.ivr as first arg
+ adds r3=8,r2 // set up second base pointer for SAVE_REST
+ ;;
+ ssm psr.ic
+ ;;
+ srlz.i
+ ;;
+ //(p15) ssm psr.i
+ addl r14=@gprel(ia64_leave_hypervisor),gp
+ ;;
+ KVM_SAVE_REST
+ mov rp=r14
+ ;;
+ mov out0=r13 // pass pointer to pt_regs as second arg
+ br.call.sptk.many b6=kvm_ia64_handle_irq
+END(kvm_dispatch_interrupt)
+
+
+
+
+GLOBAL_ENTRY(ia64_leave_nested)
+ rsm psr.i
+ ;;
+ adds r21=PT(PR)+16,r12
+ ;;
+ lfetch [r21],PT(CR_IPSR)-PT(PR)
+ adds r2=PT(B6)+16,r12
+ adds r3=PT(R16)+16,r12
+ ;;
+ lfetch [r21]
+ ld8 r28=[r2],8 // load b6
+ adds r29=PT(R24)+16,r12
+
+ ld8.fill r16=[r3]
+ adds r3=PT(AR_CSD)-PT(R16),r3
+ adds r30=PT(AR_CCV)+16,r12
+ ;;
+ ld8.fill r24=[r29]
+ ld8 r15=[r30] // load ar.ccv
+ ;;
+ ld8 r29=[r2],16 // load b7
+ ld8 r30=[r3],16 // load ar.csd
+ ;;
+ ld8 r31=[r2],16 // load ar.ssd
+ ld8.fill r8=[r3],16
+ ;;
+ ld8.fill r9=[r2],16
+ ld8.fill r10=[r3],PT(R17)-PT(R10)
+ ;;
+ ld8.fill r11=[r2],PT(R18)-PT(R11)
+ ld8.fill r17=[r3],16
+ ;;
+ ld8.fill r18=[r2],16
+ ld8.fill r19=[r3],16
+ ;;
+ ld8.fill r20=[r2],16
+ ld8.fill r21=[r3],16
+ mov ar.csd=r30
+ mov ar.ssd=r31
+ ;;
+ rsm psr.i | psr.ic
+ // initiate turning off of interrupt and interruption collection
+ invala // invalidate ALAT
+ ;;
+ srlz.i
+ ;;
+ ld8.fill r22=[r2],24
+ ld8.fill r23=[r3],24
+ mov b6=r28
+ ;;
+ ld8.fill r25=[r2],16
+ ld8.fill r26=[r3],16
+ mov b7=r29
+ ;;
+ ld8.fill r27=[r2],16
+ ld8.fill r28=[r3],16
+ ;;
+ ld8.fill r29=[r2],16
+ ld8.fill r30=[r3],24
+ ;;
+ ld8.fill r31=[r2],PT(F9)-PT(R31)
+ adds r3=PT(F10)-PT(F6),r3
+ ;;
+ ldf.fill f9=[r2],PT(F6)-PT(F9)
+ ldf.fill f10=[r3],PT(F8)-PT(F10)
+ ;;
+ ldf.fill f6=[r2],PT(F7)-PT(F6)
+ ;;
+ ldf.fill f7=[r2],PT(F11)-PT(F7)
+ ldf.fill f8=[r3],32
+ ;;
+ srlz.i // ensure interruption collection is off
+ mov ar.ccv=r15
+ ;;
+ bsw.0 // switch back to bank 0 (no stop bit required beforehand...)
+ ;;
+ ldf.fill f11=[r2]
+// mov r18=r13
+// mov r21=r13
+ adds r16=PT(CR_IPSR)+16,r12
+ adds r17=PT(CR_IIP)+16,r12
+ ;;
+ ld8 r29=[r16],16 // load cr.ipsr
+ ld8 r28=[r17],16 // load cr.iip
+ ;;
+ ld8 r30=[r16],16 // load cr.ifs
+ ld8 r25=[r17],16 // load ar.unat
+ ;;
+ ld8 r26=[r16],16 // load ar.pfs
+ ld8 r27=[r17],16 // load ar.rsc
+ cmp.eq p9,p0=r0,r0
+ // set p9 to indicate that we should restore cr.ifs
+ ;;
+ ld8 r24=[r16],16 // load ar.rnat (may be garbage)
+ ld8 r23=[r17],16// load ar.bspstore (may be garbage)
+ ;;
+ ld8 r31=[r16],16 // load predicates
+ ld8 r22=[r17],16 // load b0
+ ;;
+ ld8 r19=[r16],16 // load ar.rsc value for "loadrs"
+ ld8.fill r1=[r17],16 // load r1
+ ;;
+ ld8.fill r12=[r16],16
+ ld8.fill r13=[r17],16
+ ;;
+ ld8 r20=[r16],16 // ar.fpsr
+ ld8.fill r15=[r17],16
+ ;;
+ ld8.fill r14=[r16],16
+ ld8.fill r2=[r17]
+ ;;
+ ld8.fill r3=[r16]
+ ;;
+ mov r16=ar.bsp // get existing backing store pointer
+ ;;
+ mov b0=r22
+ mov ar.pfs=r26
+ mov cr.ifs=r30
+ mov cr.ipsr=r29
+ mov ar.fpsr=r20
+ mov cr.iip=r28
+ ;;
+ mov ar.rsc=r27
+ mov ar.unat=r25
+ mov pr=r31,-1
+ rfi
+END(ia64_leave_nested)
+
+
+
+GLOBAL_ENTRY(ia64_leave_hypervisor_prepare)
+ /*
+ * work.need_resched etc. mustn't get changed
+ *by this CPU before it returns to
+ ;;
+ * user- or fsys-mode, hence we disable interrupts early on:
+ */
+ adds r2 = PT(R4)+16,r12
+ adds r3 = PT(R5)+16,r12
+ adds r8 = PT(EML_UNAT)+16,r12
+ ;;
+ ld8 r8 = [r8]
+ ;;
+ mov ar.unat=r8
+ ;;
+ ld8.fill r4=[r2],16 //load r4
+ ld8.fill r5=[r3],16 //load r5
+ ;;
+ ld8.fill r6=[r2] //load r6
+ ld8.fill r7=[r3] //load r7
+ ;;
+END(ia64_leave_hypervisor_prepare)
+//fall through
+GLOBAL_ENTRY(ia64_leave_hypervisor)
+ rsm psr.i
+ ;;
+ br.call.sptk.many b0=leave_hypervisor_tail
+ ;;
+ adds r20=PT(PR)+16,r12
+ adds r8=PT(EML_UNAT)+16,r12
+ ;;
+ ld8 r8=[r8]
+ ;;
+ mov ar.unat=r8
+ ;;
+ lfetch [r20],PT(CR_IPSR)-PT(PR)
+ adds r2 = PT(B6)+16,r12
+ adds r3 = PT(B7)+16,r12
+ ;;
+ lfetch [r20]
+ ;;
+ ld8 r24=[r2],16 /* B6 */
+ ld8 r25=[r3],16 /* B7 */
+ ;;
+ ld8 r26=[r2],16 /* ar_csd */
+ ld8 r27=[r3],16 /* ar_ssd */
+ mov b6 = r24
+ ;;
+ ld8.fill r8=[r2],16
+ ld8.fill r9=[r3],16
+ mov b7 = r25
+ ;;
+ mov ar.csd = r26
+ mov ar.ssd = r27
+ ;;
+ ld8.fill r10=[r2],PT(R15)-PT(R10)
+ ld8.fill r11=[r3],PT(R14)-PT(R11)
+ ;;
+ ld8.fill r15=[r2],PT(R16)-PT(R15)
+ ld8.fill r14=[r3],PT(R17)-PT(R14)
+ ;;
+ ld8.fill r16=[r2],16
+ ld8.fill r17=[r3],16
+ ;;
+ ld8.fill r18=[r2],16
+ ld8.fill r19=[r3],16
+ ;;
+ ld8.fill r20=[r2],16
+ ld8.fill r21=[r3],16
+ ;;
+ ld8.fill r22=[r2],16
+ ld8.fill r23=[r3],16
+ ;;
+ ld8.fill r24=[r2],16
+ ld8.fill r25=[r3],16
+ ;;
+ ld8.fill r26=[r2],16
+ ld8.fill r27=[r3],16
+ ;;
+ ld8.fill r28=[r2],16
+ ld8.fill r29=[r3],16
+ ;;
+ ld8.fill r30=[r2],PT(F6)-PT(R30)
+ ld8.fill r31=[r3],PT(F7)-PT(R31)
+ ;;
+ rsm psr.i | psr.ic
+ // initiate turning off of interrupt and interruption collection
+ invala // invalidate ALAT
+ ;;
+ srlz.i // ensure interruption collection is off
+ ;;
+ bsw.0
+ ;;
+ adds r16 = PT(CR_IPSR)+16,r12
+ adds r17 = PT(CR_IIP)+16,r12
+ mov r21=r13 // get current
+ ;;
+ ld8 r31=[r16],16 // load cr.ipsr
+ ld8 r30=[r17],16 // load cr.iip
+ ;;
+ ld8 r29=[r16],16 // load cr.ifs
+ ld8 r28=[r17],16 // load ar.unat
+ ;;
+ ld8 r27=[r16],16 // load ar.pfs
+ ld8 r26=[r17],16 // load ar.rsc
+ ;;
+ ld8 r25=[r16],16 // load ar.rnat
+ ld8 r24=[r17],16 // load ar.bspstore
+ ;;
+ ld8 r23=[r16],16 // load predicates
+ ld8 r22=[r17],16 // load b0
+ ;;
+ ld8 r20=[r16],16 // load ar.rsc value for "loadrs"
+ ld8.fill r1=[r17],16 //load r1
+ ;;
+ ld8.fill r12=[r16],16 //load r12
+ ld8.fill r13=[r17],PT(R2)-PT(R13) //load r13
+ ;;
+ ld8 r19=[r16],PT(R3)-PT(AR_FPSR) //load ar_fpsr
+ ld8.fill r2=[r17],PT(AR_CCV)-PT(R2) //load r2
+ ;;
+ ld8.fill r3=[r16] //load r3
+ ld8 r18=[r17] //load ar_ccv
+ ;;
+ mov ar.fpsr=r19
+ mov ar.ccv=r18
+ shr.u r18=r20,16
+ ;;
+kvm_rbs_switch:
+ mov r19=96
+
+kvm_dont_preserve_current_frame:
+/*
+ * To prevent leaking bits between the hypervisor and guest domain,
+ * we must clear the stacked registers in the "invalid" partition here.
+ * 5 registers/cycle on McKinley).
+ */
+# define pRecurse p6
+# define pReturn p7
+# define Nregs 14
+
+ alloc loc0=ar.pfs,2,Nregs-2,2,0
+ shr.u loc1=r18,9 // RNaTslots <= floor(dirtySize / (64*8))
+ sub r19=r19,r18 // r19 = (physStackedSize + 8) - dirtySize
+ ;;
+ mov ar.rsc=r20 // load ar.rsc to be used for "loadrs"
+ shladd in0=loc1,3,r19
+ mov in1=0
+ ;;
+ TEXT_ALIGN(32)
+kvm_rse_clear_invalid:
+ alloc loc0=ar.pfs,2,Nregs-2,2,0
+ cmp.lt pRecurse,p0=Nregs*8,in0
+ // if more than Nregs regs left to clear, (re)curse
+ add out0=-Nregs*8,in0
+ add out1=1,in1 // increment recursion count
+ mov loc1=0
+ mov loc2=0
+ ;;
+ mov loc3=0
+ mov loc4=0
+ mov loc5=0
+ mov loc6=0
+ mov loc7=0
+(pRecurse) br.call.dptk.few b0=kvm_rse_clear_invalid
+ ;;
+ mov loc8=0
+ mov loc9=0
+ cmp.ne pReturn,p0=r0,in1
+ // if recursion count != 0, we need to do a br.ret
+ mov loc10=0
+ mov loc11=0
+(pReturn) br.ret.dptk.many b0
+
+# undef pRecurse
+# undef pReturn
+
+// loadrs has already been shifted
+ alloc r16=ar.pfs,0,0,0,0 // drop current register frame
+ ;;
+ loadrs
+ ;;
+ mov ar.bspstore=r24
+ ;;
+ mov ar.unat=r28
+ mov ar.rnat=r25
+ mov ar.rsc=r26
+ ;;
+ mov cr.ipsr=r31
+ mov cr.iip=r30
+ mov cr.ifs=r29
+ mov ar.pfs=r27
+ adds r18=VMM_VPD_BASE_OFFSET,r21
+ ;;
+ ld8 r18=[r18] //vpd
+ adds r17=VMM_VCPU_ISR_OFFSET,r21
+ ;;
+ ld8 r17=[r17]
+ adds r19=VMM_VPD_VPSR_OFFSET,r18
+ ;;
+ ld8 r19=[r19] //vpsr
+ adds r20=VMM_VCPU_VSA_BASE_OFFSET,r21
+ ;;
+ ld8 r20=[r20]
+ ;;
+//vsa_sync_write_start
+ mov r25=r18
+ adds r16= VMM_VCPU_GP_OFFSET,r21
+ ;;
+ ld8 r16= [r16] // Put gp in r24
+ movl r24=@gprel(ia64_vmm_entry) // calculate return address
+ ;;
+ add r24=r24,r16
+ ;;
+ add r16=PAL_VPS_SYNC_WRITE,r20
+ ;;
+ mov b0=r16
+ br.cond.sptk b0 // call the service
+ ;;
+END(ia64_leave_hypervisor)
+// fall through
+GLOBAL_ENTRY(ia64_vmm_entry)
+/*
+ * must be at bank 0
+ * parameter:
+ * r17:cr.isr
+ * r18:vpd
+ * r19:vpsr
+ * r20:__vsa_base
+ * r22:b0
+ * r23:predicate
+ */
+ mov r24=r22
+ mov r25=r18
+ tbit.nz p1,p2 = r19,IA64_PSR_IC_BIT // p1=vpsr.ic
+ ;;
+ (p1) add r29=PAL_VPS_RESUME_NORMAL,r20
+ (p1) br.sptk.many ia64_vmm_entry_out
+ ;;
+ tbit.nz p1,p2 = r17,IA64_ISR_IR_BIT //p1=cr.isr.ir
+ ;;
+ (p1) add r29=PAL_VPS_RESUME_NORMAL,r20
+ (p2) add r29=PAL_VPS_RESUME_HANDLER,r20
+ (p2) ld8 r26=[r25]
+ ;;
+ia64_vmm_entry_out:
+ mov pr=r23,-2
+ mov b0=r29
+ ;;
+ br.cond.sptk b0 // call pal service
+END(ia64_vmm_entry)
+
+
+
+/*
+ * extern u64 ia64_call_vsa(u64 proc, u64 arg1, u64 arg2,
+ * u64 arg3, u64 arg4, u64 arg5,
+ * u64 arg6, u64 arg7);
+ *
+ * XXX: The currently defined services use only 4 args at the max. The
+ * rest are not consumed.
+ */
+GLOBAL_ENTRY(ia64_call_vsa)
+ .regstk 4,4,0,0
+
+rpsave = loc0
+pfssave = loc1
+psrsave = loc2
+entry = loc3
+hostret = r24
+
+ alloc pfssave=ar.pfs,4,4,0,0
+ mov rpsave=rp
+ adds entry=VMM_VCPU_VSA_BASE_OFFSET, r13
+ ;;
+ ld8 entry=[entry]
+1: mov hostret=ip
+ mov r25=in1 // copy arguments
+ mov r26=in2
+ mov r27=in3
+ mov psrsave=psr
+ ;;
+ tbit.nz p6,p0=psrsave,14 // IA64_PSR_I
+ tbit.nz p7,p0=psrsave,13 // IA64_PSR_IC
+ ;;
+ add hostret=2f-1b,hostret // calculate return address
+ add entry=entry,in0
+ ;;
+ rsm psr.i | psr.ic
+ ;;
+ srlz.i
+ mov b6=entry
+ br.cond.sptk b6 // call the service
+2:
+ // Architectural sequence for enabling interrupts if necessary
+(p7) ssm psr.ic
+ ;;
+(p7) srlz.i
+ ;;
+//(p6) ssm psr.i
+ ;;
+ mov rp=rpsave
+ mov ar.pfs=pfssave
+ mov r8=r31
+ ;;
+ srlz.d
+ br.ret.sptk rp
+
+END(ia64_call_vsa)
+
+#define INIT_BSPSTORE ((4<<30)-(12<<20)-0x100)
+
+GLOBAL_ENTRY(vmm_reset_entry)
+ //set up ipsr, iip, vpd.vpsr, dcr
+ // For IPSR: it/dt/rt=1, i/ic=1, si=1, vm/bn=1
+ // For DCR: all bits 0
+ adds r14=-VMM_PT_REGS_SIZE, r12
+ ;;
+ movl r6=0x501008826000 // IPSR dt/rt/it:1;i/ic:1, si:1, vm/bn:1
+ movl r10=0x8000000000000000
+ adds r16=PT(CR_IIP), r14
+ adds r20=PT(R1), r14
+ ;;
+ rsm psr.ic | psr.i
+ ;;
+ srlz.i
+ ;;
+ bsw.0
+ ;;
+ mov r21 =r13
+ ;;
+ bsw.1
+ ;;
+ mov ar.rsc = 0
+ ;;
+ flushrs
+ ;;
+ mov ar.bspstore = 0
+ // clear BSPSTORE
+ ;;
+ mov cr.ipsr=r6
+ mov cr.ifs=r10
+ ld8 r4 = [r16] // Set init iip for first run.
+ ld8 r1 = [r20]
+ ;;
+ mov cr.iip=r4
+ ;;
+ adds r16=VMM_VPD_BASE_OFFSET,r13
+ adds r20=VMM_VCPU_VSA_BASE_OFFSET,r13
+ ;;
+ ld8 r18=[r16]
+ ld8 r20=[r20]
+ ;;
+ adds r19=VMM_VPD_VPSR_OFFSET,r18
+ ;;
+ ld8 r19=[r19]
+ mov r17=r0
+ mov r22=r0
+ mov r23=r0
+ br.cond.sptk ia64_vmm_entry
+ br.ret.sptk b0
+END(vmm_reset_entry)
--
1.5.5


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