Write Linux parallel interface character device driver translated from: the Linux kernel Primer: a top-down approach for x86 and PowerPC ubuntures
"Translated by clardia Salzberg Rodriguez, Gordon Fischer, Steven Smolski Liu Jianwen
)
Key: Parallel Port of Linux driverIntro
In this tutorial, a Linux driver is written for a parallel port controller with simple functions. The current PC Parallel Port Controller is generally integrated into the super I
completed independently by the debugger. Supporting Multiple Target platforms is a major feature of gnu gdb.
To sum up, this scheme requires the target operating system to provide communication modules (including simple device drivers) that support remote debugging protocols and multi-task debugging interfaces, and rewrite the relevant parts of exception handling. In addition, a breakpoint setting function needs to be defined for the target operating system, because some hardware platforms p
This is an article about arm structure in IOS. It has simple words, clear logic, and humor. Non-developers are also worth reading, and the right to increase knowledge.
When I wrote "getting started with the neon iPhone", I thought that the reader had a better understanding of the processor knowledge of iOS devices. However, after reading some discussions on the internet, I found that the original knowledge is not popular, and it is my fault. In addition, I think understanding these things is he
This is an article about arm structure in IOS. It has simple words, clear logic, and humor. Non-developers are also worth reading, and the right to increase knowledge.
When I wrote "getting started with the neon iPhone", I thought that the reader had a better understanding of the processor knowledge of iOS devices. However, after reading some discussions on the internet, I found that the original knowledge is not popular, and it is my fault. In addition, I think understanding these things is he
order conversion
#define NTOHL (N)//32-bit data type network byte order conversion to host byte order
#define HTONL (N)//32-bit data type host byte order to network byte order conversion
The network byte order in which the Internet is used is addressed in the big-endian mode, and the host byte order differs depending on the processor, such as the PowerPC processor using the endian mode, while the Pentuim processor uses the small-end mode
, lasting 30 months. At the beginning of 2006, Tiger became the first OS X system version to support Intel processors, with an intel® PowerPC processor for up to 10 years. And with Rosetta, Apple can start transitioning to Intel technology, allowing OS X systems to have good compatibility with older Intel processor computers.Product: MacBook Pro (mgxc2ch/a) Apple notebook PC3 first time allow Mac computer to run Windows system· Mac OS X 10.5--leopard
undirected connected graphs is not unique. The set of edges traversed by a connected graph and the set of all vertices in the graph constitute a spanning tree of the graph, and different spanning trees may be obtained for different traversal of connected graphs.
Figure G5 The spanning tree of undirected connected graphs is shown in (a), (b), and (c) diagrams:
G5
Three tree spanning trees in
LATE_INITCALL_SYNC (FN) __define_initcall ("7s", fn,7s)There is a paragraph in the link script vmlinux.lds:The location of each segment in the kernel file:When the kernel is configured to select the PCI bus subsystem, Subsys_initcall (pcibios_init) is executed when the kernel is booted;The module maintains a global variable hose_list. and managed in a chain-list management way, once the list has new members added, it is processed using the PCI subsystem, including scanning, probing, and so on.T
Big-endian (large byte sequence, high byte order)Little-endian (small byte order, low byte order)Host byte orderNetwork byte orderJava byte order1. Big-endian, Little-endian are related to multibyte-type data such as the Int,short,long type, but have no effect on single-byte byte data. Big-endian is low byte emissions at the low end of memory, high byte emissions in the high-end memory. and Little-endian just the opposite.like int a = 0x05060708stored in the case of Big-endian:BYTE number 0 1 2
GNU grub and Grub are abbreviations for the Grand Unified bootloader, which is a multiple operating system startup manager. Used to guide different systems, such as Windows,linux.
In the X86 architecture of the machine, the Linux, BSD or other Unix-class operating systems grub, LILO is the most common, should be said to be the mainstream.
Windows also has similar tools ntloader, for example, after we install Windows 98 in the machine, we install a Windows XP, and a menu in the machine boot l
This blog post mainly originates from the web Xiaozhen of the sky: http://xiaozhen1900.blog.163.com/blog/static/1741732572011325111945246/1, is the platformJava is a cross-platform programming language, so we first need to know what the platform is, we call the CPU processor and the overall operating system as a whole platform .CPU everyone knows, if the computer is human , that CPU is the human brain, it is responsible for the thinking of computing, but also responsible for the body parts of
parts of the system boot, such as the system initialization and startup process, are completely controlled by the kernel;
Briefly, boot loader is the first software program that runs when a computer starts. it is responsible for loading and transferring control to the operating system kernel software (such as the Hurd or the Linux ). the kernel, in turn, initializes the rest of the operating system (e.g. GNU ).
GRUB and LILO are the most common operating systems in Linux, BSD, or other Unix ope
* About to connect () to x. x. x. x port 80 (#0) * Trying x. x. x. x... connected * Connected to x. x. x. x (x. x. x. x) port 80 (#0)> GET/HTTP/1.1> User-Agent: curl/7.16.3 (powerpc-apple-darwin9.0) libcurl/7.16.3 OpenSSL/0.9.7l zlib/1.2.3> Accept: */*> Host: www.verycd.com> The returned results are directly hijacked and replaced. Unlike Trojans, the hijacking code is inserted at the beginning or end of the webpage content.Then, enter the VeryCD IP a
build
The kernel of the local machine, including single Processor and SMP (Symmetric Multi Processor) versions. The configured source code is included in the kernel-[smp-] devel-.. rpm package.
Virtual kernel hypervisor for use with the Xen emulator package. Configured sources are available in the kernel-xen0-devel-... rpm package.
Virtual kernel guest for use with the Xen emulator package. Configured sources are available in the kernel-xenU-devel-... rpm package.
Kdump kernel, used with ke
First, KVM IntroductionKVM (kernel-basedvirtual machine), a kernel-based VM, is a virtualized infrastructure used in the Linux kernel to transform the Linux kernel into a hypervisor. KVM was introduced into the Linux 2.6.20 core in February 2007 and ported to FreeBSD and Illumos in a way that can load core modules.KVM runs on an x86 platform with Intel VT or AMD-V capabilities. It is also ported to the S/390,POWERPC and IA-64 platforms. In Linux kerne
the end mode. In the socket programming, the following functions are used to convert the byte order of the size end.
#define NTOHS (N)//16-bit data type network byte order conversion to host byte order
#define HTONS (N)//16-bit data type host byte order to network byte order conversion
#define NTOHL (N)//32-bit data type network byte order conversion to host byte order
#define HTONL (N)//32-bit data type host byte order to network byte order conversion
The network byte
-endian, Little-endian are related to multibyte-type data, such as the Int,short,long type, but have no effect on single-byte data byte. Big-endian is low-byte emissions at the high end of memory, high-bit bytes emitted at the low end of memory. And Little-endian is the opposite. For example, int a = 0x05060708 is stored in the case of Big-endian: byte number 0 1 2 3 data 05 06 07 08 stored in the case of Little-endian: byte number 0 1 2 3 data from 05big-endian , Little-endian and CPU, each CPU
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