Function

hv_vcpu_read_register(_:_:_:)

Returns, by reference, the current value of an architectural x86 register of a vCPU.

Declaration

func hv_vcpu_read_register(_ vcpu: hv_vcpuid_t, _ reg: hv_x86_reg_t, _ value: UnsafeMutablePointer<UInt64>!) -> hv_return_t

Parameters

vcpu

The ID of the vCPU.

reg

The ID of the register to be read. For possible values, see hv_x86_reg_t.

value

On return, this argument is populated with the value read from the specified register.

Return Value

HV_SUCCESS if the operation was successful, otherwise an error code specified in hv_return_t.

Discussion

This function must be called by the owning thread.

See Also

Accessing Registers

func hv_vcpu_write_register(hv_vcpuid_t, hv_x86_reg_t, UInt64) -> hv_return_t

Sets the value of an architectural x86 register of a vCPU.