Table of Contents
问题内容
解决方法
Home Backend Development Golang objdump and parse linking of local function calls?

objdump and parse linking of local function calls?

Feb 10, 2024 pm 05:57 PM

objdump 和解析本地函数调用的链接?

php小编柚子给大家介绍一种强大的工具 - objdump,它可以帮助我们解析本地函数调用的链接。objdump是一个用于分析和反汇编二进制文件的命令行工具。通过使用objdump,我们可以查看二进制文件中的函数调用和链接信息,了解函数之间的关系和调用顺序。这对于理解代码的执行流程和调试问题非常有帮助。objdump提供了丰富的选项和功能,可以满足不同场景下的需求。让我们一起来探索objdump的奥秘吧!

问题内容

如果我在 (linux amd64) .o 文件上运行 objdump -d,则会显示函数调用,但未完成链接时间解析。示例:

90:   66 89 44 24 1c          mov    %ax,0x1c(%rsp)
  95:   44 89 74 24 10          mov    %r14d,0x10(%rsp)
  9a:   e8 00 00 00 00          callq  9f <foo+0x9f>
  9f:   83 f8 ff                cmp    $0xffffffffffffffff,%eax
  a2:   74 5e                   je     102 <foo+0x102>
Copy after login

函数内的分支正确显示,但 callq 只是为链接器放入的存根(有四个字节的零可供链接器放入正确的地址)。

有没有一种方法,无需实际链接即可获取已解析函数名称的程序集列表?我不关心最终将使用的地址,只关心函数的名称。该信息必须位于 .o 文件中,因为链接器必须使用它来完成其工作。

我问这个问题是因为相关代码所在的共享库大约有 140Mb,并且需要很长时间来运行 objdump -d 来获取包含所有函数调用的 asm 转储解析为他们的真实姓名。

解决方法

是:使用 objdump -dr foo.o

The above is the detailed content of objdump and parse linking of local function calls?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What are the vulnerabilities of Debian OpenSSL What are the vulnerabilities of Debian OpenSSL Apr 02, 2025 am 07:30 AM

OpenSSL, as an open source library widely used in secure communications, provides encryption algorithms, keys and certificate management functions. However, there are some known security vulnerabilities in its historical version, some of which are extremely harmful. This article will focus on common vulnerabilities and response measures for OpenSSL in Debian systems. DebianOpenSSL known vulnerabilities: OpenSSL has experienced several serious vulnerabilities, such as: Heart Bleeding Vulnerability (CVE-2014-0160): This vulnerability affects OpenSSL 1.0.1 to 1.0.1f and 1.0.2 to 1.0.2 beta versions. An attacker can use this vulnerability to unauthorized read sensitive information on the server, including encryption keys, etc.

How do you use the pprof tool to analyze Go performance? How do you use the pprof tool to analyze Go performance? Mar 21, 2025 pm 06:37 PM

The article explains how to use the pprof tool for analyzing Go performance, including enabling profiling, collecting data, and identifying common bottlenecks like CPU and memory issues.Character count: 159

How do you write unit tests in Go? How do you write unit tests in Go? Mar 21, 2025 pm 06:34 PM

The article discusses writing unit tests in Go, covering best practices, mocking techniques, and tools for efficient test management.

How do I write mock objects and stubs for testing in Go? How do I write mock objects and stubs for testing in Go? Mar 10, 2025 pm 05:38 PM

This article demonstrates creating mocks and stubs in Go for unit testing. It emphasizes using interfaces, provides examples of mock implementations, and discusses best practices like keeping mocks focused and using assertion libraries. The articl

How can I define custom type constraints for generics in Go? How can I define custom type constraints for generics in Go? Mar 10, 2025 pm 03:20 PM

This article explores Go's custom type constraints for generics. It details how interfaces define minimum type requirements for generic functions, improving type safety and code reusability. The article also discusses limitations and best practices

Explain the purpose of Go's reflect package. When would you use reflection? What are the performance implications? Explain the purpose of Go's reflect package. When would you use reflection? What are the performance implications? Mar 25, 2025 am 11:17 AM

The article discusses Go's reflect package, used for runtime manipulation of code, beneficial for serialization, generic programming, and more. It warns of performance costs like slower execution and higher memory use, advising judicious use and best

How can I use tracing tools to understand the execution flow of my Go applications? How can I use tracing tools to understand the execution flow of my Go applications? Mar 10, 2025 pm 05:36 PM

This article explores using tracing tools to analyze Go application execution flow. It discusses manual and automatic instrumentation techniques, comparing tools like Jaeger, Zipkin, and OpenTelemetry, and highlighting effective data visualization

How do you use table-driven tests in Go? How do you use table-driven tests in Go? Mar 21, 2025 pm 06:35 PM

The article discusses using table-driven tests in Go, a method that uses a table of test cases to test functions with multiple inputs and outcomes. It highlights benefits like improved readability, reduced duplication, scalability, consistency, and a

See all articles