diff options
Diffstat (limited to 'arch/powerpc/kvm/emulate.c')
| -rw-r--r-- | arch/powerpc/kvm/emulate.c | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c index 9f5b8c01c4e1..355d5206e8aa 100644 --- a/arch/powerpc/kvm/emulate.c +++ b/arch/powerpc/kvm/emulate.c @@ -1,16 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * 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. 2007 * Copyright 2011 Freescale Semiconductor, Inc. @@ -202,9 +191,10 @@ static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt) /* XXX Should probably auto-generate instruction decoding for a particular core * from opcode tables in the future. */ -int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) +int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu) { u32 inst; + ppc_inst_t pinst; int rs, rt, sprn; enum emulation_result emulated; int advance = 1; @@ -212,7 +202,8 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) /* this default type might be overwritten by subcategories */ kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS); - emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &inst); + emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &pinst); + inst = ppc_inst_val(pinst); if (emulated != EMULATE_DONE) return emulated; @@ -281,8 +272,9 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) * these are illegal instructions. */ if (inst == KVMPPC_INST_SW_BREAKPOINT) { - run->exit_reason = KVM_EXIT_DEBUG; - run->debug.arch.address = kvmppc_get_pc(vcpu); + vcpu->run->exit_reason = KVM_EXIT_DEBUG; + vcpu->run->debug.arch.status = 0; + vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu); emulated = EMULATE_EXIT_USER; advance = 0; } else @@ -295,7 +287,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) } if (emulated == EMULATE_FAIL) { - emulated = vcpu->kvm->arch.kvm_ops->emulate_op(run, vcpu, inst, + emulated = vcpu->kvm->arch.kvm_ops->emulate_op(vcpu, inst, &advance); if (emulated == EMULATE_AGAIN) { advance = 0; @@ -309,6 +301,10 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated); /* Advance past emulated instruction. */ + /* + * If this ever handles prefixed instructions, the 4 + * will need to become ppc_inst_len(pinst) instead. + */ if (advance) kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4); |