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Diffstat (limited to 'arch/powerpc/kvm/44x_emulate.c')
-rw-r--r--arch/powerpc/kvm/44x_emulate.c51
1 files changed, 19 insertions, 32 deletions
diff --git a/arch/powerpc/kvm/44x_emulate.c b/arch/powerpc/kvm/44x_emulate.c
index 549bb2c9a47a..c8c61578fdfc 100644
--- a/arch/powerpc/kvm/44x_emulate.c
+++ b/arch/powerpc/kvm/44x_emulate.c
@@ -37,22 +37,19 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
- int dcrn;
- int ra;
- int rb;
- int rc;
- int rs;
- int rt;
- int ws;
+ int dcrn = get_dcrn(inst);
+ int ra = get_ra(inst);
+ int rb = get_rb(inst);
+ int rc = get_rc(inst);
+ int rs = get_rs(inst);
+ int rt = get_rt(inst);
+ int ws = get_ws(inst);
switch (get_op(inst)) {
case 31:
switch (get_xop(inst)) {
case XOP_MFDCR:
- dcrn = get_dcrn(inst);
- rt = get_rt(inst);
-
/* The guest may access CPR0 registers to determine the timebase
* frequency, and it must know the real host frequency because it
* can directly access the timebase registers.
@@ -88,9 +85,6 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case XOP_MTDCR:
- dcrn = get_dcrn(inst);
- rs = get_rs(inst);
-
/* emulate some access in kernel */
switch (dcrn) {
case DCRN_CPR0_CONFIG_ADDR:
@@ -108,17 +102,10 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case XOP_TLBWE:
- ra = get_ra(inst);
- rs = get_rs(inst);
- ws = get_ws(inst);
emulated = kvmppc_44x_emul_tlbwe(vcpu, ra, rs, ws);
break;
case XOP_TLBSX:
- rt = get_rt(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
- rc = get_rc(inst);
emulated = kvmppc_44x_emul_tlbsx(vcpu, rt, ra, rb, rc);
break;
@@ -141,41 +128,41 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
return emulated;
}
-int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
+int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
{
int emulated = EMULATE_DONE;
switch (sprn) {
case SPRN_PID:
- kvmppc_set_pid(vcpu, kvmppc_get_gpr(vcpu, rs)); break;
+ kvmppc_set_pid(vcpu, spr_val); break;
case SPRN_MMUCR:
- vcpu->arch.mmucr = kvmppc_get_gpr(vcpu, rs); break;
+ vcpu->arch.mmucr = spr_val; break;
case SPRN_CCR0:
- vcpu->arch.ccr0 = kvmppc_get_gpr(vcpu, rs); break;
+ vcpu->arch.ccr0 = spr_val; break;
case SPRN_CCR1:
- vcpu->arch.ccr1 = kvmppc_get_gpr(vcpu, rs); break;
+ vcpu->arch.ccr1 = spr_val; break;
default:
- emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
+ emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, spr_val);
}
return emulated;
}
-int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
+int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
{
int emulated = EMULATE_DONE;
switch (sprn) {
case SPRN_PID:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.pid); break;
+ *spr_val = vcpu->arch.pid; break;
case SPRN_MMUCR:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.mmucr); break;
+ *spr_val = vcpu->arch.mmucr; break;
case SPRN_CCR0:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ccr0); break;
+ *spr_val = vcpu->arch.ccr0; break;
case SPRN_CCR1:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.ccr1); break;
+ *spr_val = vcpu->arch.ccr1; break;
default:
- emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
+ emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, spr_val);
}
return emulated;