edx c

/ntoskrnl/IO/RW. C provides it with the called ntreadfile (). However, it is incorrect to think about it carefully. This readfile () runs in the user space, while the code in reactos/ntoskrnl/IO/RW. C is in the kernel and in the system space. Can a user space program directly call functions in the kernel in this way? In that case, what are the traps and calling mechanisms? Besides, how can we connect them during compilation?In this case, we can conclude that there is another secret. For more inf

In many network development scenarios, memory conversion is often encountered in the following scenarios: #define PACKAGE_PARSE_ERROR -1#define PACKAGE_PARSE_OK 0int parse_package( int* a, int* b, int* c, int* d, char* buf, int buf_len ){ if( !buf || buf_len This is a call in the Process of network unpacking, and the packet process is a reverse process. An application like this can be replaced by an integer forced conversion, and the efficiency will be at least doubled. To illustrate t

Reading Tips: 《Delphi Image ProcessingThe series focuses on efficiency. The general code is Pascal, and the core code is BaSm. 《C ++ Image ProcessingThe series focuses on code clarity and readability, and all uses C ++ code. Make sure that the two items are consistent and can be compared with each other. The code in this article must include the imagedata. Pas unit in "Delphi Image Processing-data type and public process. The minimum value processing of an image is centered on the current pixel

)Shadowsocksgoagent undoubtedly adds a window to this closed room. His author level is not necessarily the top in China, but it is the most worthy of our respect. Isn't it the OpenStack that has become the IaaS de facto standard? In other words, thefuck is not very tall. _ (: 3 "outputs) _ list of excellent Python projects (awesome-python) Vinta/awesome-python · GitHub Pycrumbs/pycrumbs. md at master · kirang89/pycrumbs · GitHub Svaksha/pythonidae · GitHub Checkcheckzz/python-github-projects

Tools:VC 7.0BCB 6.0Compilation options: Maximum Speed Optimization (VC 7.0 turns off the automatic inline function option)Decompilation tool: w32dasm Benchmark Test procedure:Void test (){Int A = 0, B = 1, C = 4;For (INT I = 0; I ++;}} Int main (){_ ASM {MoV edX, EDXNOP};Test ();} Purpose: To test the program's ability to optimize useless functions. Because test does not return any value or modify any external variables,Therefore, for programs, this i

the kernel can find the corresponding service in SSDT according to the index value, then, the kernel calls the service to complete the application API call request. In ntdll, although NtQuerySystemInformation and ZwQuerySystemInformation start with nt and zw functions, they are actually the same. Let's look at IDA. Let's first look at the address of functions in the Nt * series: . Text: 77F061F8 _ NtQuerySystemInformation @ 16 In ntdll, the two functions of zw and nt are actually the same

Core tips: This experiment demonstrates that when calling a method in a class, all methods imply a self parameter, and this parameter is passed as the first parameter of the object method... First, create an empty form and put a button.The following two methods are declared under implementation: // The external method declares only one parameter. In this case, the standard Object internal event Method tpolicyevent is declared. In this declaration, the sender corresponds to the object pointer

ebp.data:00406054 8B EC mov ebp, esp.dat a:00406056, EC, sub ESP, 8.data:00406059 8B mov eax, [ebp+sztefi].data:004 0605C ebx.data:0040605d Push esi.data:0040605e 57 Push edi.data:0040605f 8B mov ecx, [eax].data:00406061 8B mov EDX, [eax+4];. data:00406061;; Save String "Createfi". data:00406064 C7 FC xx 00+ mov [ebp+processor_architecture], 0.data:0040606b 4D F8 mov [Ebp+szcrea], ecx.data:0040606e, MOV [Ebp+

eax,dword ptr [___security_cookie (417004h)]004113d3 XOR EAX,EBP004113D5 mov dword ptr [Ebp-4],eax004113d8 mov dword ptr [Ebp-0ch],0eeeeeeeeh004113DF mov byte ptr [ebp-20h],0004113E3 XOR Eax,eax004113E5 mov dword ptr [Ebp-1fh],eax004113E8 mov dword ptr [Ebp-1bh],eax004113EB mov byte ptr [ebp-17h],al004113EE mov dword ptr [EBP-2CH],0FFFFFFFFH004113F5 Push offset string "Masefee" (415804h)004113FA Lea EAX,[EBP-20H]004113FD push EAX004113FE call @ILT +160 (_strcpy) (4110a5h)00411403 Add esp,800411

= 20000, the valid addresses are: 100000+400*4+20000=100000+1000+20000=121000. The corresponding linear address is 400000+121000=521000. (Note that all are hexadecimal numbers). The base address can be placed in any 32-bit universal register, and the address can also be placed in any general register other than esp. The scaling factor can be 1, 2, 4, or 8. The offset is an immediate number. For example, [ebp+edx*8+200] is a valid, valid address exp

Traceback (most recent):File "manage.py", line all, in startup = Importlib.import_module (Edx_args.startup)File "/usr/lib/python2.7/importlib/__init__.py", line Notoginseng, in Import_module__IMPORT__ (name)File "/edx/app/edxapp/edx-platform/cms/startup.py", line 7, Settings. Installed_apps # pylint:disable=w0104File "/edx/app/edxapp/venvs/edxapp/local/lib/python