vmdevirt/include/vmp_rtn.hpp

#pragma once
#include <vmprofiler.hpp>

#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/IRPrintingPasses.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Pass.h"
#include "llvm/Support/raw_ostream.h"

namespace vm
{
    class vmp_rtn_t
    {
      public:
        explicit vmp_rtn_t( llvm::LLVMContext *llvm_ctx, llvm::Module *llvm_module, vm::ctx_t *vm_ctx,
                            std::uintptr_t rtn_begin, std::vector< vm::instrs::code_block_t > vmp2_code_blocks );

        llvm::Function *lift( void );
        llvm::LLVMContext *llvm_ctx;
        vm::ctx_t *vm_ctx;
        llvm::Module *llvm_module;
        std::uintptr_t rtn_begin;
        llvm::Function *llvm_fptr;
        std::shared_ptr< llvm::IRBuilder<> > ir_builder;
        llvm::AllocaInst *virtual_stack, *stack_ptr;

        std::map< ZydisRegister, llvm::GlobalVariable * > native_registers;
        std::vector< llvm::AllocaInst * > virtual_registers;
        std::vector< llvm::BasicBlock * > llvm_code_blocks;
        std::vector< vm::instrs::code_block_t > vmp2_code_blocks;

        void push( std::uint8_t byte_size, llvm::Value *input_val );
        llvm::Value *pop( std::uint8_t byte_size );
        llvm::Value *peek( std::uint8_t byte_size, std::uint8_t byte_offset = 0u );
        llvm::Value *load_value( std::uint8_t byte_size, llvm::GlobalValue *global );
        llvm::Value *load_value( std::uint8_t byte_size, llvm::AllocaInst *var );

      private:
        void create_native_registers( void );
        void create_virtual_registers( void );
        void create_routine( void );
        void create_virtual_stack( void );
        void lift_vm_entry( void );
    };
} // namespace vm