arch/arm/include/asm/kvm_emulate.h

   1 /*
   2  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
   3  * Author: Christoffer Dall <c.dall@virtualopensystems.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License, version 2, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #ifndef __ARM_KVM_EMULATE_H__
  20 #define __ARM_KVM_EMULATE_H__
  21
  22 #include <linux/kvm_host.h>
  23 #include <asm/kvm_asm.h>
  24 #include <asm/kvm_mmio.h>
  25
  26 u32 *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num);
  27 u32 *vcpu_spsr(struct kvm_vcpu *vcpu);
  28
  29 int kvm_handle_wfi(struct kvm_vcpu *vcpu, struct kvm_run *run);
  30 void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr);
  31 void kvm_inject_undefined(struct kvm_vcpu *vcpu);
  32 void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
  33 void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
  34
  35 static inline u32 *vcpu_pc(struct kvm_vcpu *vcpu)
  36 {
  37         return (u32 *)&vcpu->arch.regs.usr_regs.ARM_pc;
  38 }
  39
  40 static inline u32 *vcpu_cpsr(struct kvm_vcpu *vcpu)
  41 {
  42         return (u32 *)&vcpu->arch.regs.usr_regs.ARM_cpsr;
  43 }
  44
  45 static inline bool mode_has_spsr(struct kvm_vcpu *vcpu)
  46 {
  47         unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
  48         return (cpsr_mode > USR_MODE && cpsr_mode < SYSTEM_MODE);
  49 }
  50
  51 static inline bool vcpu_mode_priv(struct kvm_vcpu *vcpu)
  52 {
  53         unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
  54         return cpsr_mode > USR_MODE;;
  55 }
  56
  57 static inline bool kvm_vcpu_reg_is_pc(struct kvm_vcpu *vcpu, int reg)
  58 {
  59         return reg == 15;
  60 }
  61
  62 #endif /* __ARM_KVM_EMULATE_H__ */