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authorHollis Blanchard <hollisb@us.ibm.com>2009-01-03 16:23:06 -0600
committerAvi Kivity <avi@redhat.com>2009-03-24 11:02:57 +0200
commitd0c7dc03442f7cbd8740d9a4e7a4e7f84bfa676d (patch)
tree8f0aa28d4734fc20249239b4736ac437a19c3937 /arch/powerpc/kvm
parentcea5d8c9de669e30ed6d60930318376d5cc42e9e (diff)
downloadop-kernel-dev-d0c7dc03442f7cbd8740d9a4e7a4e7f84bfa676d.zip
op-kernel-dev-d0c7dc03442f7cbd8740d9a4e7a4e7f84bfa676d.tar.gz
KVM: ppc: split out common Book E instruction emulation
The Book E code will be shared with e500. I've left PID in kvmppc_core_emulate_op() just so that we don't need to move kvmppc_set_pid() right now. Once we have the e500 implementation, we can probably share that too. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm')
-rw-r--r--arch/powerpc/kvm/44x_emulate.c217
-rw-r--r--arch/powerpc/kvm/Makefile1
-rw-r--r--arch/powerpc/kvm/booke.h6
-rw-r--r--arch/powerpc/kvm/booke_emulate.c262
4 files changed, 284 insertions, 202 deletions
diff --git a/arch/powerpc/kvm/44x_emulate.c b/arch/powerpc/kvm/44x_emulate.c
index 82489a7..61af58f 100644
--- a/arch/powerpc/kvm/44x_emulate.c
+++ b/arch/powerpc/kvm/44x_emulate.c
@@ -27,25 +27,12 @@
#include "booke.h"
#include "44x_tlb.h"
-#define OP_RFI 19
-
-#define XOP_RFI 50
-#define XOP_MFMSR 83
-#define XOP_WRTEE 131
-#define XOP_MTMSR 146
-#define XOP_WRTEEI 163
#define XOP_MFDCR 323
#define XOP_MTDCR 451
#define XOP_TLBSX 914
#define XOP_ICCCI 966
#define XOP_TLBWE 978
-static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
-{
- vcpu->arch.pc = vcpu->arch.srr0;
- kvmppc_set_msr(vcpu, vcpu->arch.srr1);
-}
-
int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
@@ -59,48 +46,9 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
int ws;
switch (get_op(inst)) {
- case OP_RFI:
- switch (get_xop(inst)) {
- case XOP_RFI:
- kvmppc_emul_rfi(vcpu);
- kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
- *advance = 0;
- break;
-
- default:
- emulated = EMULATE_FAIL;
- break;
- }
- break;
-
case 31:
switch (get_xop(inst)) {
- case XOP_MFMSR:
- rt = get_rt(inst);
- vcpu->arch.gpr[rt] = vcpu->arch.msr;
- kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
- break;
-
- case XOP_MTMSR:
- rs = get_rs(inst);
- kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
- kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
- break;
-
- case XOP_WRTEE:
- rs = get_rs(inst);
- vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
- | (vcpu->arch.gpr[rs] & MSR_EE);
- kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
- break;
-
- case XOP_WRTEEI:
- vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
- | (inst & MSR_EE);
- kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
- break;
-
case XOP_MFDCR:
dcrn = get_dcrn(inst);
rt = get_rt(inst);
@@ -186,186 +134,51 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
emulated = EMULATE_FAIL;
}
+ if (emulated == EMULATE_FAIL)
+ emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
+
return emulated;
}
int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
{
+ int emulated = EMULATE_DONE;
+
switch (sprn) {
- case SPRN_MMUCR:
- vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break;
case SPRN_PID:
kvmppc_set_pid(vcpu, vcpu->arch.gpr[rs]); break;
+ case SPRN_MMUCR:
+ vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break;
case SPRN_CCR0:
vcpu->arch.ccr0 = vcpu->arch.gpr[rs]; break;
case SPRN_CCR1:
vcpu->arch.ccr1 = vcpu->arch.gpr[rs]; break;
- case SPRN_DEAR:
- vcpu->arch.dear = vcpu->arch.gpr[rs]; break;
- case SPRN_ESR:
- vcpu->arch.esr = vcpu->arch.gpr[rs]; break;
- case SPRN_DBCR0:
- vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
- case SPRN_DBCR1:
- vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
- case SPRN_TSR:
- vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
- case SPRN_TCR:
- vcpu->arch.tcr = vcpu->arch.gpr[rs];
- kvmppc_emulate_dec(vcpu);
- break;
-
- /* Note: SPRG4-7 are user-readable. These values are
- * loaded into the real SPRGs when resuming the
- * guest. */
- case SPRN_SPRG4:
- vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break;
- case SPRN_SPRG5:
- vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break;
- case SPRN_SPRG6:
- vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break;
- case SPRN_SPRG7:
- vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break;
-
- case SPRN_IVPR:
- vcpu->arch.ivpr = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR0:
- vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR1:
- vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR2:
- vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR3:
- vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR4:
- vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR5:
- vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR6:
- vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR7:
- vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR8:
- vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR9:
- vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR10:
- vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR11:
- vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR12:
- vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR13:
- vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR14:
- vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = vcpu->arch.gpr[rs];
- break;
- case SPRN_IVOR15:
- vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = vcpu->arch.gpr[rs];
- break;
-
default:
- return EMULATE_FAIL;
+ emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
}
kvmppc_set_exit_type(vcpu, EMULATED_MTSPR_EXITS);
- return EMULATE_DONE;
+ return emulated;
}
int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
{
+ int emulated = EMULATE_DONE;
+
switch (sprn) {
- /* 440 */
+ case SPRN_PID:
+ vcpu->arch.gpr[rt] = vcpu->arch.pid; break;
case SPRN_MMUCR:
vcpu->arch.gpr[rt] = vcpu->arch.mmucr; break;
case SPRN_CCR0:
vcpu->arch.gpr[rt] = vcpu->arch.ccr0; break;
case SPRN_CCR1:
vcpu->arch.gpr[rt] = vcpu->arch.ccr1; break;
-
- /* Book E */
- case SPRN_PID:
- vcpu->arch.gpr[rt] = vcpu->arch.pid; break;
- case SPRN_IVPR:
- vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break;
- case SPRN_DEAR:
- vcpu->arch.gpr[rt] = vcpu->arch.dear; break;
- case SPRN_ESR:
- vcpu->arch.gpr[rt] = vcpu->arch.esr; break;
- case SPRN_DBCR0:
- vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
- case SPRN_DBCR1:
- vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
-
- case SPRN_IVOR0:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
- break;
- case SPRN_IVOR1:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
- break;
- case SPRN_IVOR2:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
- break;
- case SPRN_IVOR3:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
- break;
- case SPRN_IVOR4:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
- break;
- case SPRN_IVOR5:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
- break;
- case SPRN_IVOR6:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
- break;
- case SPRN_IVOR7:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
- break;
- case SPRN_IVOR8:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
- break;
- case SPRN_IVOR9:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
- break;
- case SPRN_IVOR10:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
- break;
- case SPRN_IVOR11:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
- break;
- case SPRN_IVOR12:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
- break;
- case SPRN_IVOR13:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
- break;
- case SPRN_IVOR14:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
- break;
- case SPRN_IVOR15:
- vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
- break;
-
default:
- return EMULATE_FAIL;
+ emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
}
kvmppc_set_exit_type(vcpu, EMULATED_MFSPR_EXITS);
- return EMULATE_DONE;
+ return emulated;
}
diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile
index df7ba59..3ef5261 100644
--- a/arch/powerpc/kvm/Makefile
+++ b/arch/powerpc/kvm/Makefile
@@ -16,6 +16,7 @@ AFLAGS_booke_interrupts.o := -I$(obj)
kvm-440-objs := \
booke.o \
+ booke_emulate.o \
booke_interrupts.o \
44x.o \
44x_tlb.o \
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index cf7c94c..311fdbc 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -22,6 +22,7 @@
#include <linux/types.h>
#include <linux/kvm_host.h>
+#include <asm/kvm_ppc.h>
#include "timing.h"
/* interrupt priortity ordering */
@@ -57,4 +58,9 @@ static inline void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
};
}
+int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance);
+int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
+int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
+
#endif /* __KVM_BOOKE_H__ */
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
new file mode 100644
index 0000000..8aa78f1
--- /dev/null
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -0,0 +1,262 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+#include <linux/kvm_host.h>
+#include <asm/disassemble.h>
+
+#include "booke.h"
+
+#define OP_19_XOP_RFI 50
+
+#define OP_31_XOP_MFMSR 83
+#define OP_31_XOP_WRTEE 131
+#define OP_31_XOP_MTMSR 146
+#define OP_31_XOP_WRTEEI 163
+
+static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.pc = vcpu->arch.srr0;
+ kvmppc_set_msr(vcpu, vcpu->arch.srr1);
+}
+
+int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ unsigned int inst, int *advance)
+{
+ int emulated = EMULATE_DONE;
+ int rs;
+ int rt;
+
+ switch (get_op(inst)) {
+ case 19:
+ switch (get_xop(inst)) {
+ case OP_19_XOP_RFI:
+ kvmppc_emul_rfi(vcpu);
+ kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
+ *advance = 0;
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ break;
+ }
+ break;
+
+ case 31:
+ switch (get_xop(inst)) {
+
+ case OP_31_XOP_MFMSR:
+ rt = get_rt(inst);
+ vcpu->arch.gpr[rt] = vcpu->arch.msr;
+ kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
+ break;
+
+ case OP_31_XOP_MTMSR:
+ rs = get_rs(inst);
+ kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
+ kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
+ break;
+
+ case OP_31_XOP_WRTEE:
+ rs = get_rs(inst);
+ vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
+ | (vcpu->arch.gpr[rs] & MSR_EE);
+ kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
+ break;
+
+ case OP_31_XOP_WRTEEI:
+ vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
+ | (inst & MSR_EE);
+ kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ }
+
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ }
+
+ return emulated;
+}
+
+int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
+{
+ int emulated = EMULATE_DONE;
+
+ switch (sprn) {
+ case SPRN_DEAR:
+ vcpu->arch.dear = vcpu->arch.gpr[rs]; break;
+ case SPRN_ESR:
+ vcpu->arch.esr = vcpu->arch.gpr[rs]; break;
+ case SPRN_DBCR0:
+ vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
+ case SPRN_DBCR1:
+ vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
+ case SPRN_TSR:
+ vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
+ case SPRN_TCR:
+ vcpu->arch.tcr = vcpu->arch.gpr[rs];
+ kvmppc_emulate_dec(vcpu);
+ break;
+
+ /* Note: SPRG4-7 are user-readable. These values are
+ * loaded into the real SPRGs when resuming the
+ * guest. */
+ case SPRN_SPRG4:
+ vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break;
+ case SPRN_SPRG5:
+ vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break;
+ case SPRN_SPRG6:
+ vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break;
+ case SPRN_SPRG7:
+ vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break;
+
+ case SPRN_IVPR:
+ vcpu->arch.ivpr = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR0:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR1:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR2:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR3:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR4:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR5:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR6:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR7:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR8:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR9:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR10:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR11:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR12:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR13:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR14:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = vcpu->arch.gpr[rs];
+ break;
+ case SPRN_IVOR15:
+ vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = vcpu->arch.gpr[rs];
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ }
+
+ return emulated;
+}
+
+int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
+{
+ int emulated = EMULATE_DONE;
+
+ switch (sprn) {
+ case SPRN_IVPR:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break;
+ case SPRN_DEAR:
+ vcpu->arch.gpr[rt] = vcpu->arch.dear; break;
+ case SPRN_ESR:
+ vcpu->arch.gpr[rt] = vcpu->arch.esr; break;
+ case SPRN_DBCR0:
+ vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
+ case SPRN_DBCR1:
+ vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
+
+ case SPRN_IVOR0:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
+ break;
+ case SPRN_IVOR1:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
+ break;
+ case SPRN_IVOR2:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
+ break;
+ case SPRN_IVOR3:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
+ break;
+ case SPRN_IVOR4:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
+ break;
+ case SPRN_IVOR5:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
+ break;
+ case SPRN_IVOR6:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
+ break;
+ case SPRN_IVOR7:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
+ break;
+ case SPRN_IVOR8:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
+ break;
+ case SPRN_IVOR9:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
+ break;
+ case SPRN_IVOR10:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
+ break;
+ case SPRN_IVOR11:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
+ break;
+ case SPRN_IVOR12:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
+ break;
+ case SPRN_IVOR13:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
+ break;
+ case SPRN_IVOR14:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
+ break;
+ case SPRN_IVOR15:
+ vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
+ break;
+
+ default:
+ emulated = EMULATE_FAIL;
+ }
+
+ return emulated;
+}
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