使用 Addr2line 将函数地址解析为函数名
用 Addr2line 将函数地址解析为函数名 http://www.ibm.com/developerworks/cn/linux/l-graphvis/ Addr2line 工具(它是标准的 GNU Binutils 中的一部分)是一个可以将指令的地址和可执行映像转换成文件名、函数名和源代码行数的工具。这种功能对于将跟踪地址
用 Addr2line 将函数地址解析为函数名
http://www.ibm.com/developerworks/cn/linux/l-graphvis/
Addr2line 工具(它是标准的 GNU Binutils 中的一部分)是一个可以将指令的地址和可执行映像转换成文件名、函数名和源代码行数的工具。这种功能对于将跟踪地址转换成更有意义的内容来说简直是太棒了。
要了解这个过程是怎样工作的,我们可以试验一个简单的交互式的例子。(我直接从 shell 中进行操作,因为这是最简单地展示这个过程的方法,如清单 4 所示。)这个示例 C 文件(test.c)是通过 cat
一个简单的应用程序实现的(也就是说,将标准输出的文本重定向到一个文件中)。然后使用 gcc 来编译这个文件,它会传递一些特殊的选项。首先,要(使用 -Wl
选项)通知链接器生成一个映像文件,并(使用 -g
选项)通知编译器生成调试符号。最终生成可执行文件 test。得到新的可执行应用程序之后,您就可以使用grep
工具在映像文件中查找 main
来寻找它的地址了。使用这个地址和
Addr2line 工具,就可以判断出函数名(main
)、源文件(/home/mtj/test/test.c)以及它在源文件中的行号(4)。
在调用 Addr2line 工具时,要使用 -e
选项来指定可执行映像是 test
。通过使用 -f
选项,可以告诉工具输出函数名。
$ cat >> test.c #include <stdio.h> int main() { printf("Hello World\n"); return 0; } <ctld-d> $ gcc -Wl,-Map=test.map -g -o test test.c $ grep main test.map 0x08048258 __libc_start_main@@GLIBC_2.0 0x08048258 main $ addr2line 0x08048258 -e test -f main /home/mtj/test/test.c:4 $</ctld-d></stdio.h>

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



MetaMask (also called Little Fox Wallet in Chinese) is a free and well-received encryption wallet software. Currently, BTCC supports binding to the MetaMask wallet. After binding, you can use the MetaMask wallet to quickly log in, store value, buy coins, etc., and you can also get 20 USDT trial bonus for the first time binding. In the BTCCMetaMask wallet tutorial, we will introduce in detail how to register and use MetaMask, and how to bind and use the Little Fox wallet in BTCC. What is MetaMask wallet? With over 30 million users, MetaMask Little Fox Wallet is one of the most popular cryptocurrency wallets today. It is free to use and can be installed on the network as an extension

Go language provides two dynamic function creation technologies: closure and reflection. closures allow access to variables within the closure scope, and reflection can create new functions using the FuncOf function. These technologies are useful in customizing HTTP routers, implementing highly customizable systems, and building pluggable components.

In C++ function naming, it is crucial to consider parameter order to improve readability, reduce errors, and facilitate refactoring. Common parameter order conventions include: action-object, object-action, semantic meaning, and standard library compliance. The optimal order depends on the purpose of the function, parameter types, potential confusion, and language conventions.

The key to writing efficient and maintainable Java functions is: keep it simple. Use meaningful naming. Handle special situations. Use appropriate visibility.

1. The SUM function is used to sum the numbers in a column or a group of cells, for example: =SUM(A1:J10). 2. The AVERAGE function is used to calculate the average of the numbers in a column or a group of cells, for example: =AVERAGE(A1:A10). 3. COUNT function, used to count the number of numbers or text in a column or a group of cells, for example: =COUNT(A1:A10) 4. IF function, used to make logical judgments based on specified conditions and return the corresponding result.

The advantages of default parameters in C++ functions include simplifying calls, enhancing readability, and avoiding errors. The disadvantages are limited flexibility and naming restrictions. Advantages of variadic parameters include unlimited flexibility and dynamic binding. Disadvantages include greater complexity, implicit type conversions, and difficulty in debugging.

The benefits of functions returning reference types in C++ include: Performance improvements: Passing by reference avoids object copying, thus saving memory and time. Direct modification: The caller can directly modify the returned reference object without reassigning it. Code simplicity: Passing by reference simplifies the code and requires no additional assignment operations.

The difference between custom PHP functions and predefined functions is: Scope: Custom functions are limited to the scope of their definition, while predefined functions are accessible throughout the script. How to define: Custom functions are defined using the function keyword, while predefined functions are defined by the PHP kernel. Parameter passing: Custom functions receive parameters, while predefined functions may not require parameters. Extensibility: Custom functions can be created as needed, while predefined functions are built-in and cannot be modified.
