成员函数的识别

来源：互联网发布：缺乏安全感怎么办知乎编辑：程序博客网时间：2024/06/06 00:13

调用成员函数与普通函数的差别在于，调用成员函数时要先转到跳转表，再到函数入口。

 Test.SetNumber(5);00407797 6A 05                push        5  00407799 8D 45 F8             lea         eax,[Test]  0040779C 50                   push        eax  0040779D E8 79 C8 FF FF       call        CTest::SetNumber (040401Bh)

jmp表___vcrt_GetModuleHandleW:00404002 E9 A9 84 00 00       jmp         __vcrt_GetModuleHandleW (040C4B0h)  __crt_stdio_output::output_processor<char,__crt_stdio_output::stream_output_adapter<char>,__crt_stdio_output::standard_base<char,__crt_stdio_output::stream_output_adapter<char> > >::type_case_s_compute_narrow_string_length:00404007 E9 74 3E 04 00       jmp         __crt_stdio_output::output_processor<char,__crt_stdio_output::stream_output_adapter<char>,__crt_stdio_output::standard_base<char,__crt_stdio_output::stream_output_adapter<char> > >::type_case_s_compute_narrow_string_length (0447E80h)  __crt_interlocked_compare_exchange_pointer<void __cdecl(void),std::nullptr_t,std::nullptr_t>:0040400C E9 5F 9E 01 00       jmp         __crt_interlocked_compare_exchange_pointer<void __cdecl(void),std::nullptr_t,std::nullptr_t> (041DE70h)  __atol_l:00404011 E9 6A DA 05 00       jmp         _atol_l (0461A80h)  __vcrt_va_start_verify_argument_type<char const * const>:00404016 E9 75 38 00 00       jmp         __vcrt_va_start_verify_argument_type<char const * const>+10h (0407890h)  CTest::SetNumber:0040401B E9 40 38 00 00       jmp         CTest::SetNumber (0407860h)  00404020 CC                   int         3  00404021 CC                   int         3  00404022 CC                   int         3

 class CTest { public:     void __stdcall SetNumber(int nNumber)    {00407860 55                   push        ebp  00407861 8B EC                mov         ebp,esp          m_nInt = nNumber;00407863 8B 45 08             mov         eax,dword ptr [this]  00407866 8B 4D 0C             mov         ecx,dword ptr [nNumber]  00407869 89 08                mov         dword ptr [eax],ecx      }0040786B 5D                   pop         ebp  0040786C C2 08 00             ret         8

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