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path: root/arch/powerpc/kvm/booke_emulate.c
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Diffstat (limited to 'arch/powerpc/kvm/booke_emulate.c')
-rw-r--r--arch/powerpc/kvm/booke_emulate.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
index 28c158881d23..a82f64502de1 100644
--- a/arch/powerpc/kvm/booke_emulate.c
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -25,6 +25,7 @@
#define OP_19_XOP_RFI 50
#define OP_19_XOP_RFCI 51
+#define OP_19_XOP_RFDI 39
#define OP_31_XOP_MFMSR 83
#define OP_31_XOP_WRTEE 131
@@ -37,6 +38,12 @@ static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
}
+static void kvmppc_emul_rfdi(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.pc = vcpu->arch.dsrr0;
+ kvmppc_set_msr(vcpu, vcpu->arch.dsrr1);
+}
+
static void kvmppc_emul_rfci(struct kvm_vcpu *vcpu)
{
vcpu->arch.pc = vcpu->arch.csrr0;
@@ -65,6 +72,12 @@ int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
*advance = 0;
break;
+ case OP_19_XOP_RFDI:
+ kvmppc_emul_rfdi(vcpu);
+ kvmppc_set_exit_type(vcpu, EMULATED_RFDI_EXITS);
+ *advance = 0;
+ break;
+
default:
emulated = EMULATE_FAIL;
break;
@@ -118,6 +131,7 @@ int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
{
int emulated = EMULATE_DONE;
+ bool debug_inst = false;
switch (sprn) {
case SPRN_DEAR:
@@ -132,14 +146,128 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
case SPRN_CSRR1:
vcpu->arch.csrr1 = spr_val;
break;
+ case SPRN_DSRR0:
+ vcpu->arch.dsrr0 = spr_val;
+ break;
+ case SPRN_DSRR1:
+ vcpu->arch.dsrr1 = spr_val;
+ break;
+ case SPRN_IAC1:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.iac1 = spr_val;
+ break;
+ case SPRN_IAC2:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.iac2 = spr_val;
+ break;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ case SPRN_IAC3:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.iac3 = spr_val;
+ break;
+ case SPRN_IAC4:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.iac4 = spr_val;
+ break;
+#endif
+ case SPRN_DAC1:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.dac1 = spr_val;
+ break;
+ case SPRN_DAC2:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.dac2 = spr_val;
+ break;
case SPRN_DBCR0:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ spr_val &= (DBCR0_IDM | DBCR0_IC | DBCR0_BT | DBCR0_TIE |
+ DBCR0_IAC1 | DBCR0_IAC2 | DBCR0_IAC3 | DBCR0_IAC4 |
+ DBCR0_DAC1R | DBCR0_DAC1W | DBCR0_DAC2R | DBCR0_DAC2W);
+
vcpu->arch.dbg_reg.dbcr0 = spr_val;
break;
case SPRN_DBCR1:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
vcpu->arch.dbg_reg.dbcr1 = spr_val;
break;
+ case SPRN_DBCR2:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
+ debug_inst = true;
+ vcpu->arch.dbg_reg.dbcr2 = spr_val;
+ break;
case SPRN_DBSR:
+ /*
+ * If userspace is debugging guest then guest
+ * can not access debug registers.
+ */
+ if (vcpu->guest_debug)
+ break;
+
vcpu->arch.dbsr &= ~spr_val;
+ if (!(vcpu->arch.dbsr & ~DBSR_IDE))
+ kvmppc_core_dequeue_debug(vcpu);
break;
case SPRN_TSR:
kvmppc_clr_tsr_bits(vcpu, spr_val);
@@ -252,6 +380,10 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
emulated = EMULATE_FAIL;
}
+ if (debug_inst) {
+ current->thread.debug = vcpu->arch.dbg_reg;
+ switch_booke_debug_regs(&vcpu->arch.dbg_reg);
+ }
return emulated;
}
@@ -278,12 +410,43 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
case SPRN_CSRR1:
*spr_val = vcpu->arch.csrr1;
break;
+ case SPRN_DSRR0:
+ *spr_val = vcpu->arch.dsrr0;
+ break;
+ case SPRN_DSRR1:
+ *spr_val = vcpu->arch.dsrr1;
+ break;
+ case SPRN_IAC1:
+ *spr_val = vcpu->arch.dbg_reg.iac1;
+ break;
+ case SPRN_IAC2:
+ *spr_val = vcpu->arch.dbg_reg.iac2;
+ break;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ case SPRN_IAC3:
+ *spr_val = vcpu->arch.dbg_reg.iac3;
+ break;
+ case SPRN_IAC4:
+ *spr_val = vcpu->arch.dbg_reg.iac4;
+ break;
+#endif
+ case SPRN_DAC1:
+ *spr_val = vcpu->arch.dbg_reg.dac1;
+ break;
+ case SPRN_DAC2:
+ *spr_val = vcpu->arch.dbg_reg.dac2;
+ break;
case SPRN_DBCR0:
*spr_val = vcpu->arch.dbg_reg.dbcr0;
+ if (vcpu->guest_debug)
+ *spr_val = *spr_val | DBCR0_EDM;
break;
case SPRN_DBCR1:
*spr_val = vcpu->arch.dbg_reg.dbcr1;
break;
+ case SPRN_DBCR2:
+ *spr_val = vcpu->arch.dbg_reg.dbcr2;
+ break;
case SPRN_DBSR:
*spr_val = vcpu->arch.dbsr;
break;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-20 00:14:24 +0300