bluepill/vmxexit_handler.h

#pragma once
#include "hv_types.hpp"
#include "debug.hpp"
#include "invd.hpp"
#include "mm.hpp"

enum class vmcall_option
{
	translate,
	copy_virt,
	write_phys,
	read_phys,
	dirbase
};

typedef struct _vmcall_command_t
{
	bool present;
	bool result;
	vmcall_option option;

	union
	{
		struct
		{
			u64 dirbase;
			u64 virt_addr;
			u64 phys_addr;
		} translate;

		struct
		{
			u64 virt_src;
			u64 dirbase_src;
			u64 virt_dest;
			u64 dirbase_dest;
			u64 size;
		} copy_virt;

		struct
		{
			u64 virt_src;
			u64 dirbase_src;
			u64 phys_dest;
			u64 size;
		} write_phys;

		struct
		{
			u64 phys_src;
			u64 dirbase_dest;
			u64 virt_dest;
			u64 size;
		} read_phys;

		u64 dirbase;
	};

} vmcall_command_t, * pvmcall_command_t;

extern "C" auto vmxexit_handler() -> void;
extern "C" auto exit_handler(hv::pguest_registers regs) -> void;

auto get_command(u64 dirbase, u64 command_ptr) -> vmcall_command_t;
auto set_command(u64 dirbase, u64 command_ptr, const vmcall_command_t& vmcall_command) -> void;