This patch adds emulation for the cmpwi and cmpdi instructions.
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
arch/powerpc/include/asm/ppc-opcode.h | 1 +
arch/powerpc/kvm/emulate.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 8a155dd..5160af9 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -114,6 +114,7 @@
#define OP_31_XOP_LHBRX 790
#define OP_31_XOP_STHBRX 918
+#define OP_CMPI 11
#define OP_ADDIS 15
#define OP_ORI 24
#define OP_ANDI 28
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index bde4c1e..7b8acb0 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -531,6 +531,11 @@ int kvmppc_emulate_any_instruction(struct kvm_vcpu *vcpu)
kvmppc_set_gpr(vcpu, get_ra(inst), value);
kvmppc_emulate_cmp(vcpu, value, 0, true, 0, is_32bit);
break;
+ case OP_CMPI:
+ value = kvmppc_get_gpr(vcpu, get_ra(inst));
+ kvmppc_emulate_cmp(vcpu, value, (s16)get_d(inst), true,
+ get_rt(inst) >> 2, !(get_rt(inst) & 1));
+ break;
case 31:
switch (get_xop(inst)) {
case OP_31_XOP_MFCR:
--
1.8.1.4
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