data segments?) )
The glibc is used to satisfy the large allocation, the threshold value is generally 128KB
p = mmap (NULL, 512*1024, prot_read| Prot_write, map_anonymous| Map_private,-1, 0);
mallopt*
$ malloc_check=1./test
P300 do not use ALLOCA () allocated memory as arguments to function calls
C99 variable length Array (vlas): Char buf[i];
Memory operations
Memset, bzero ==〉 priority to use Calloc?
memcmp
swap by using the fsck command to divide a partition into a swap, and then use the MKSWAP command to format the partition as swap, and then use the Swapon The device file name "to start the swap device. can use Free This memory view command to see if swap is loaded correctly. In addition to building a partition into swap, you can use a large file to construct the swap, which is similar. you can also use Swapoff to release swap files when you use a file to build swap. This chapter is a summary
2 att assembly language knowledge
In Linux source code, files with the. s extension are "pure" assembly language files. Here, we combine
The specific example introduces some att assembly language knowledge.
1. GNU assembly program gas (GNU
One of arm linux boot: assembly is started to start_kernel, armstart_kernel
This section describes the process of starting arm linux. The first stage is described in this document, taking S5PV210 (Cortex A8) as an example.
I. Guidance for arm linux
After booting arm linux (u
New book Unix/Linux Log Analysis and traffic monitoring is coming soon
The new book "Unix/Linux Log Analysis and traffic monitoring" is about to release the 0.75 million-word book created in three years. It has been approved by the publishing house today and will be publishe
As an efficient and tightly integrated hardware platform, assembly language plays an important role in the operating system, embedded development and other fields. Because the assembler relies on the hardware structure (CPU script), the assembly language of the different architectures is also very divergent. This article briefly introduces the ATAMP;T syntax under Linux
Selecting a tool book for Linux is very important for learners. A tool book with incorrect ideas will lead new users astray. At present, there are many books on Linux in China, but there are not many excellent books. A good tool book is required. It will benefit a lot in ter
See here everyone basically know how to do Linux under the assembly system call; But some children's shoes may ask: How do you know the extra assembly code that we've solved in functions in C library?OK, I admit: I know through the reverse, this seems to be a bit of a foul suspicion ...For example, in the previous article in the Mmap C library function, first wri
"Books's Linux private dish" is the time of the year from October 19, 2016 to October 31, which ends today.First of all to thank QQ number for: 1084830483 (road in the distance), from the Harbin Engineering University students presented to the Xuan Soul Studio readers. The students get this book, please take the initiative to contact the "road in the distance", express thanks!This
with the last argument in the caller's parameter table, the call is automatically pressed into the stack, and all the parameters are pressed into the stack, and then the return address (breakpoint) is automatically pressed into the stack after the end of the called Program execution. So that it can return to the correct location of the keynote program after the program is finished and continues execution.For the second type:For the second model, you must open a common area where both the caller
startupThis section is a system-related assembly section, where the code is located in Arch\arm\kernel\head. S, the entrance is entry (stext), and its main completion work includes:1) Set current arm operating mode is SVC mode, off interrupt2) __lookup_processor_type Obtain the corresponding CPU information data structure address, mainly arm V7 architecture-related information, such as Mmu,cache flag value, data structure as follows:struct Proc_info_
The other day, Neo recommended a website containing more than 100 free linux books. Here, I also recommend 20 of the best free Linux books. Of course, they are also in the English version.
1. Ubuntu pocket guide and reference
An Introduction to Ubuntu 8.04 and 8.10.
Website
Www.ubuntupocketguide.com
Author
Keir Thomas
Format
PDF
Pages
152
2. Two bits
A
The first week of Linux kernel design--from the assembly language to understand how the computer works Song Juning (20135315) I. The experimental process figure 1 writing songchenning5315.c fileFigure 2 Compiling a C file into a 32-bit machine languageFigure 3 Removing the link statement from the. s file to get the final assembly codeSecond, the analysis of stack
This book from the Unix/linux system of raw logs (raw log) collection and analysis, and gradually into the log audit and computer forensics link. The book provides a number of cases, each case with a vivid note of the network after the invasion, management personnel to carry out the process of system forensics and recovery, case analysis techniques with the story
Linux depth Introduction First, from the introduction of Linux system installation, the Linux system management and server configuration of the two parts of knowledge. System management aspects include Linux system introduction and installation, Linux character interface, di
return value is returned to the EAX register PUSHL (%EBP # Press the second command-line argument pointer into the stack call atoi addl%eax, result pushl result # passes the arguments to the function printf, which must be pressed into the stack. PUSHL $output # The arguments are placed in the order opposite the order that printf gets. Call printf PUSHL $ call exitDirect make compile link result:$ makeas-gstabs- o libc.o libc.sld-o arg libc
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It is also a x86 CPU, but it can be expressed in different forms of assembly languages. In Windows, we use intel-format assembly languages, while in Linux systems, att-format assembly
This book systematically introduces the process of program development using C language on the Linux platform, by listing a large number of program instances, this allows you to quickly master the methods and skills for C program development on the Linux platform, and be able to develop large applications.This book is
In the Linux environment, the compilation language programming is preliminary-using C library functions-general Linux technology-Linux programming and kernel information. The following is a detailed description. Cpuid. the s program uses the Linux System Call (int $0x80) to display the string and exit the program. If t
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