x86_reg_acc_access interface can be
used to access x86 register state in an efficient manner.
The interface is intended to be used from user decoder
service routines.
This interface is internal and may change without notice.
SIM_INTERFACE(x86_reg_access) {
uint64 (*get_gpr)(conf_object_t *cpu, unsigned index);
void (*set_gpr)(conf_object_t *cpu, unsigned index, uint64 val);
uint64 (*get_rip)(conf_object_t *cpu);
void (*set_rip)(conf_object_t *cpu, uint64 rip);
uint64 (*get_rflags)(conf_object_t *cpu);
void (*set_rflags)(conf_object_t *cpu, uint64 rflags);
/* Possibly faster method for setting only cf,pf,af,zf,sf,of */
void (*set_status_flags)(conf_object_t *cpu, uint16 flags);
/* Regular segment registers */
x86_seg_reg_t (*get_seg)(conf_object_t *cpu, x86_seg_t n);
void (*set_seg)(conf_object_t *cpu, x86_seg_t n, x86_seg_reg_t seg);
/* IDTR and GDTR */
x86_system_seg_reg_t (*get_system_seg)(conf_object_t *cpu,
x86_system_seg_t n);
void (*set_system_seg)(conf_object_t *cpu, x86_system_seg_t n,
x86_system_seg_reg_t seg);
/* Control registers */
uint64 (*get_cr)(conf_object_t *cpu, x86_cr_t n);
void (*set_cr)(conf_object_t *cpu, x86_cr_t n, uint64 val);
uint64 (*get_efer)(conf_object_t *cpu);
void (*set_efer)(conf_object_t *cpu, uint64 efer);
uint64 (*get_xcr)(conf_object_t *cpu, x86_xcr_t n);
void (*set_xcr)(conf_object_t *cpu, x86_xcr_t n, uint64 val);
/* x87 FPU */
x86_fpu_reg_t (*get_freg)(conf_object_t *cpu, unsigned index);
void (*set_freg)(conf_object_t *cpu, unsigned index, x86_fpu_reg_t freg);
x86_fpu_env_t (*get_fpu_env)(conf_object_t *cpu);
void (*set_fpu_env)(conf_object_t *cpu, x86_fpu_env_t state);
/* SIMD */
xmm_reg_t (*get_xmm)(conf_object_t *cpu, unsigned index);
void (*set_xmm)(conf_object_t *cpu, unsigned index, xmm_reg_t val);
ymm_reg_t (*get_ymm)(conf_object_t *cpu, unsigned index);
void (*set_ymm)(conf_object_t *cpu, unsigned index, ymm_reg_t val);
uint32 (*get_mxcsr)(conf_object_t *cpu);
void (*set_mxcsr)(conf_object_t *cpu, uint32 mxcsr);
/* Debug registers */
uint64 (*get_dr)(conf_object_t *cpu, x86_dr_t n);
void (*set_dr)(conf_object_t *cpu, x86_dr_t n, uint64 val);
/* SMM */
bool (*get_in_smm)(conf_object_t *cpu);
void (*set_in_smm)(conf_object_t *cpu, bool val);
uint64 (*get_smm_base)(conf_object_t *cpu);
void (*set_smm_base)(conf_object_t *cpu, uint64 val);
/* Monitor/Mwait */
x86_monitor_info_t (*get_monitor_info)(conf_object_t *cpu);
void (*set_monitor_info)(conf_object_t *cpu, x86_monitor_info_t val);
x86_mwait_info_t (*get_mwait_info)(conf_object_t *cpu);
void (*set_mwait_info)(conf_object_t *cpu, x86_mwait_info_t val);
/* Non-register state */
x86_activity_t (*get_activity_state)(conf_object_t *cpu);
void (*set_activity_state)(conf_object_t *cpu, x86_activity_t val);
x86_intstate_t (*get_interruptibility_state)(conf_object_t *cpu);
void (*set_interruptibility_state)(conf_object_t *cpu,
x86_intstate_t val);
/* A debug exception is pending if triggered by the last instruction,
but not yet taken. */
x86_pending_debug_exc_t (*get_pending_debug_exc)(conf_object_t *cpu);
void (*set_pending_debug_exc)(conf_object_t *cpu,
x86_pending_debug_exc_t val);
/* Derived state for fast/easy access */
x86_xmode_info_t (*get_xmode_info)(conf_object_t *cpu);
x86_exec_mode_t (*get_exec_mode)(conf_object_t *cpu);
/* This is configuration info. No need for a set method. */
uint32 (*get_mxcsr_mask)(conf_object_t *cpu);
/* Extension state dirty bit modification (for XSAVE) */
uint64 (*get_ext_state_dirty_bits)(conf_object_t *cpu);
void (*or_ext_state_dirty_bits)(conf_object_t *cpu, uint64 dirty_bits);
void (*and_ext_state_dirty_bits)(conf_object_t *cpu, uint64 dirty_bits);
/* PDPTE registers used in PAE paging mode */
uint64 (*get_pdpte)(conf_object_t *cpu, int num);
void (*set_pdpte)(conf_object_t *cpu, int num, uint64 val);
};
#define X86_REG_ACCESS_INTERFACE "x86_reg_access"