new section of the binary file with the compiler attribute __attribute__, which belongs to the __data data segment, named Rctexport, and adds the current method name to this paragraph. At compile time, the compiler will find __attribute__ to process and add the appropriate content to the resulting executable file. The effect can be seen from Linkmap:
0102030405060708091011121314
# Sections:# Address Size Segment Section0x100001670 0x000C0180 __TEXT __text...0x10011EFA0 0x000003
specified register. Here we will see the difference. If you want to load a function in a program or specify an address during connection, use ADR, for example, the address to be located in the LDS. Use LDR when loading the 32-bit immediate number or external address.
An online example:
AREA test,CODE,READONLY ENTRYSTART ldr r0,_start adr r0,_start ldr r0,=_start nop _start nop END
This code has no practical significance, just for conv
1 0x00000001 the incorrect function.2 The 0x00000002 system could not find the specified file.3 The 0x00000003 system could not find the specified path.4 0x00000004 system cannot open file.5 0x00000005 denied access.6 0x00000006 Invalid code.7 0x00000007 Storage Control block has been destroyed.8 0x00000008 storage space is not sufficient to handle this instruction.9 0x00000009 Storage Control block address is invalid.0x0000000A environment is not correct.One 0x0000000b attempt to load a malform
The WIN32_FIND_DATA structure object that is obtained with FindFirstFile and FindNextFile is populated with information about the file, where Wfileattributes is a DWORD value, and the file attributes are,The following is the macro definition for the file properties#define File_share_read 0x00000001#define File_share_write 0x00000002#define FILE_SHARE_DELETE 0x00000004#define FILE_ATTRIBUTE_READONLY 0x00000001#define File_attribute_hidden 0x00000002#define File_attribute_system 0x00000004#define
const int32 aw_ver_negative = 0x00000008;Public const int32 aw_center = 0x00000010;Public const int32 aw_hide = 0x00010000;Public const int32 aw_activate = 0x00020000;Public const int32 aw_slide = 0x00040000;Public const int32 aw_blend = 0x00080000;
Animation effect types:
1. aw_slide: This type is used by default. This type is ignored when the aw_center effect is used.
2. aw_active: Activation window. This effect cannot be used when aw_hide effect i
Declaration method:
Statement[DllImportAttribute ("user32.dll")]Private static extern bool AnimateWindow (IntPtr hwnd, int dwTime, int dwFlags );
Parameter description:
Code(1). IntPtr hwnd: The Handle object of the target window, usually this. Handle(2). int dwTime: animation duration. The longer the value is, the longer the animation effect.(3). int dwFlags: Specifies the animation effect type option. It is declared as follows in C:Note: you only need to declare the required animation type in
Android image formats and image conversion methodsAndroid image formats and image conversion methods introduction the development of a software is closely related to images, especially mobile applications, which are crucial in terms of visual effects, this is directly related to the user experience. During Android program development, you can find out which image formats (such as ImageFormat, PixelFormat, and BitmapConfig) exist and how to convert images (such as JPG, PNG, and BMP, it will be mo
Introduction to Android Image format class and image conversion method the development of a software is closely related to the image, especially the mobile application, which is very important in the visual effect, because it is directly relatedto the user's experience effect. in the process of developing Android programs, learn what image format classes exist (ImageFormat, PixelFormat, bitmapconfig, etc.) and images (JPG, PNG, andBMP, etc.) of the conversion method, for future development wi
? BOOL Fdirty; Had the component been modified and not yet saved to disk? BOOL Fnoscroll; Is the component scrollable? Comppos Cppos; Width, height etc., WCHAR Wszfriendlyname[max_path]; Friendly name of component. WCHAR Wszsource[internet_max_url_length]; URL of the component. WCHAR Wszsubscribedurl[internet_max_url_length]; subscrined url}component;typedef COMPONENT *lpcomponent;typedef const COMPONENT *lpccomponent;//////////////////// Fl
them are very doggy and think that using extra parentheses is a bad habit. If you are not sure about the expression calculation method, you should study it again, do not write programs. Unfortunately, I did not find what I saw at the time, but I did not agree with this idea. Of course, you must understand the operational priority, but if you use different types of operations in an expression, it is best to use parentheses to protect yourself from making mistakes. This not only helps you avoid e
Atomic variable analysis in Linux Kernel
There are several things in the Linux kernel that are common, and atomic variables are one of them. In fact, I have never tried these things before. After all, there are just a few lines of code, as long as I know what this means. It is limited to knowing that there is an assembly command called lock. This ensures the atomicity of data operations. But a few days ago, for some reason, I flipped through the RCU code. The RCU code was not locked when the poi
0x00000002#defineMF_BONFS 0x00000004#defineMF_JFFS2 0x00000008#defineMF_ISRAM 0x00000010
[4. Configure and compile and run Vivi]
After the migration is complete, execute the configuration and compilation Vivi command in the VIVI directory to generate the VIVI binary file.
root@VMUBUNTU:/usr/src/vivi#make distcleanroot@VMUBUNTU:/usr/src/vivi#make menuconfigroot@VMUBUNTU:/usr/src/vivi#make
The Vivi binary file is generated in the V
(phquery, "// process (Winlogon) // % processor time", 0, pcounterhandle );If (pdhstatus! = Error_success) return false;Tip: some counters do not have instances. For example, if you want to obtain the number of seconds that the system has run since it was started, the Count item is system, the counter is system up time, and the counter instance is null, the counter path is/system up time"
6. pdhcollectquerydata: Prepare to obtain the current dataExample:Pdhstatus = pdhcollectquerydata (phquery
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