kvm_emulate.h 2.2 KB

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  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. #ifndef __ARM_KVM_EMULATE_H__
  19. #define __ARM_KVM_EMULATE_H__
  20. #include <linux/kvm_host.h>
  21. #include <asm/kvm_asm.h>
  22. #include <asm/kvm_mmio.h>
  23. u32 *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num);
  24. u32 *vcpu_spsr(struct kvm_vcpu *vcpu);
  25. int kvm_handle_wfi(struct kvm_vcpu *vcpu, struct kvm_run *run);
  26. void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr);
  27. void kvm_inject_undefined(struct kvm_vcpu *vcpu);
  28. void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
  29. void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
  30. static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu)
  31. {
  32. return 1;
  33. }
  34. static inline u32 *vcpu_pc(struct kvm_vcpu *vcpu)
  35. {
  36. return (u32 *)&vcpu->arch.regs.usr_regs.ARM_pc;
  37. }
  38. static inline u32 *vcpu_cpsr(struct kvm_vcpu *vcpu)
  39. {
  40. return (u32 *)&vcpu->arch.regs.usr_regs.ARM_cpsr;
  41. }
  42. static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu)
  43. {
  44. *vcpu_cpsr(vcpu) |= PSR_T_BIT;
  45. }
  46. static inline bool mode_has_spsr(struct kvm_vcpu *vcpu)
  47. {
  48. unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK;
  49. return (cpsr_mode > USR_MODE && cpsr_mode < SYSTEM_MODE);
  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. static inline bool kvm_vcpu_reg_is_pc(struct kvm_vcpu *vcpu, int reg)
  57. {
  58. return reg == 15;
  59. }
  60. #endif /* __ARM_KVM_EMULATE_H__ */