#pragma once
#include <nt/image.hpp>
#include <unicorn/unicorn.h>
#include <vmprofiler.hpp>

#define PAGE_4KB 0x1000
#define STACK_SIZE PAGE_4KB * 512
#define STACK_BASE 0xFFFF000000000000

namespace vm
{
    class emu_t
    {
        struct cpu_ctx_t
        {
            std::uintptr_t rip;
            uc_context *context;
            std::uint8_t stack[ STACK_SIZE ];
        };

        struct code_block_data_t
        {
            vm::instrs::code_block_t code_block;
            std::shared_ptr< cpu_ctx_t > cpu_ctx;
            std::shared_ptr< vm::ctx_t > g_vm_ctx;
        };

      public:
        explicit emu_t( vm::ctx_t *g_vm_ctx );
        ~emu_t();

        bool init();
        bool get_trace( std::vector< vm::instrs::code_block_t > &code_blocks );

      private:
        std::uintptr_t img_base, img_size;
        uc_hook code_exec_hook, invalid_mem_hook;

        uc_engine *uc_ctx;
        vm::ctx_t *g_vm_ctx;
        code_block_data_t *cc_block;

        std::vector< std::uintptr_t > vip_begins;
        std::vector< code_block_data_t > code_blocks;
        uc_err create_entry( vmp2::v2::entry_t *entry );
        static bool code_exec_callback( uc_engine *uc, uint64_t address, uint32_t size, emu_t *obj );
        static void invalid_mem( uc_engine *uc, uc_mem_type type, uint64_t address, int size, int64_t value,
                                 emu_t *obj );
    };
} // namespace vm