2 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
3 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
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.
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.
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.
19 #ifndef __ARM_KVM_EMULATE_H__
20 #define __ARM_KVM_EMULATE_H__
22 #include <linux/kvm_host.h>
23 #include <asm/kvm_asm.h>
24 #include <asm/kvm_mmio.h>
26 u32 *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num);
27 u32 *vcpu_spsr(struct kvm_vcpu *vcpu);
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);
35 static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu)
40 static inline u32 *vcpu_pc(struct kvm_vcpu *vcpu)
42 return (u32 *)&vcpu->arch.regs.usr_regs.ARM_pc;
45 static inline u32 *vcpu_cpsr(struct kvm_vcpu *vcpu)
47 return (u32 *)&vcpu->arch.regs.usr_regs.ARM_cpsr;
50 static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu)
52 *vcpu_cpsr(vcpu) |= PSR_T_BIT;
55 static inline bool mode_has_spsr(struct kvm_vcpu *vcpu)
57 unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
58 return (cpsr_mode > USR_MODE && cpsr_mode < SYSTEM_MODE);
61 static inline bool vcpu_mode_priv(struct kvm_vcpu *vcpu)
63 unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
64 return cpsr_mode > USR_MODE;;
67 static inline bool kvm_vcpu_reg_is_pc(struct kvm_vcpu *vcpu, int reg)
72 #endif /* __ARM_KVM_EMULATE_H__ */