vmprofiler/include/vmctx.hpp

#pragma once
#include <transform.hpp>
#include <vmhandlers.hpp>
#include <vmp2.hpp>

namespace vm
{
    /// <summary>
    /// vm::ctx_t class is used to auto generate vm_entry, calc_jmp, and other per-vm entry information...
    /// creating a vm::ctx_t object can make it easier to pass around information pertaining to a given vm entry...
    /// </summary>
    class ctx_t
    {
      public:
        /// <summary>
        /// default constructor for vm::ctx_t... all information for a given vm entry must be provided...
        /// </summary>
        /// <param name="module_base">the linear virtual address of the module base...</param>
        /// <param name="image_base">image base from optional nt header... <a
        /// href="https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-image_optional_header64">IMAGE_OPTIONAL_HEADER64</a>...</param>
        /// <param name="image_size">image size from optional nt header... <a
        /// href="https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-image_optional_header64">IMAGE_OPTIONAL_HEADER64</a>...</param>
        /// <param name="vm_entry_rva">relative virtual address from the module base address to the first push prior to
        /// a vm entry...</param>
        explicit ctx_t( std::uintptr_t module_base, std::uintptr_t image_base, std::uintptr_t image_size,
                        std::uintptr_t vm_entry_rva );

        /// <summary>
        /// init all per-vm entry data such as vm_entry, calc_jmp, and vm handlers...
        /// </summary>
        /// <returns>returns true if no errors...</returns>
        bool init();

        const std::uintptr_t module_base, image_base, vm_entry_rva, image_size;

        /// <summary>
        /// the order in which VIP advances...
        /// </summary>
        vmp2::exec_type_t exec_type;
        zydis_routine_t vm_entry, calc_jmp;

        /// <summary>
        /// all the vm handlers for the given vm entry...
        /// </summary>
        std::vector< vm::handler::handler_t > vm_handlers;
    };
} // namespace vm