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🐛 LLDB
🐛 LLDB

Getting Started

  • Tutorial
  • GDB to LLDB command map
  • Settings
  • Troubleshooting
  • Man Page

Using LLDB

  • Variable Formatting
  • Frame and Thread Format
  • Symbolication
  • Symbols on macOS
  • On Demand Symbols
  • Remote Debugging

IDE & Tool Integration

  • Getting started with lldb-dap
  • Model Context Protocol (MCP)

Platform-Specific Topics

  • Using LLDB On AArch64 Linux
  • Tracing with Intel Processor Trace

Scripting LLDB

  • Python Reference
    • Accessing Script Documentation
    • Embedded Python Interpreter
    • Script-Driven Debugging
    • Breakpoint-Triggered Scripts
    • Custom Breakpoint Resolvers
    • Automating Stepping Logic
    • Writing Custom Commands
    • Implementing Standalone Scripts
    • Detecting Patterns With Recognizers
    • Extending Target Stop-Hooks
  • Python API
    • SBAddress
    • SBAddressRange
    • SBAddressRangeList
    • SBAttachInfo
    • SBBlock
    • SBBreakpoint
    • SBBreakpointList
    • SBBreakpointLocation
    • SBBreakpointName
    • SBBroadcaster
    • SBCommandInterpreter
    • SBCommandInterpreterRunOptions
    • SBCommandReturnObject
    • SBCommunication
    • SBCompileUnit
    • SBData
    • SBDebugger
    • SBDeclaration
    • SBEnvironment
    • SBError
    • SBEvent
    • SBExecutionContext
    • SBExpressionOptions
    • SBFile
    • SBFileSpec
    • SBFileSpecList
    • SBFormat
    • SBFrame
    • SBFrameList
    • SBFunction
    • SBHostOS
    • SBInstruction
    • SBInstructionList
    • SBLanguageRuntime
    • SBLaunchInfo
    • SBLineEntry
    • SBListener
    • SBMemoryRegionInfo
    • SBMemoryRegionInfoList
    • SBModule
    • SBModuleSpec
    • SBModuleSpecList
    • SBMutex
    • SBPlatform
    • SBPlatformConnectOptions
    • SBPlatformShellCommand
    • SBProcess
    • SBProcessInfo
    • SBProcessInfoList
    • SBProgress
    • SBQueue
    • SBQueueItem
    • SBReproducer
    • SBSaveCoreOptions
    • SBScriptObject
    • SBSection
    • SBSourceManager
    • SBStatisticsOptions
    • SBStream
    • SBStringList
    • SBStructuredData
    • SBSymbol
    • SBSymbolContext
    • SBSymbolContextList
    • SBSyntheticValueProvider
    • SBTarget
    • SBThread
    • SBThreadCollection
    • SBThreadPlan
    • SBTrace
    • SBTraceCursor
    • SBType
    • SBTypeCategory
    • SBTypeEnumMember
    • SBTypeEnumMemberList
    • SBTypeFilter
    • SBTypeFormat
    • SBTypeList
    • SBTypeMember
    • SBTypeMemberFunction
    • SBTypeNameSpecifier
    • SBTypeStaticField
    • SBTypeSummary
    • SBTypeSummaryOptions
    • SBTypeSynthetic
    • SBUnixSignals
    • SBValue
    • SBValueList
    • SBVariablesOptions
    • SBWatchpoint
    • SBWatchpointOptions
    • value
    • value_iter
  • Python Extensions
    • OperatingSystem
    • ScriptedFrameProvider
    • PassthroughScriptedProcess
    • PassthroughScriptedThread
    • ScriptedFrame
    • ScriptedProcess
    • ScriptedThread
    • ScriptedPlatform
    • ScriptedThreadPlan

Contributing to LLDB

  • Overview
  • Contributing
  • Contributing to LLDB-DAP
  • Building
  • Testing
  • Testing LLDB using QEMU
  • Debugging
  • Fuzzing

Architecture & Internals

  • Public C++ API
  • Private C++ API
  • Scripting Bridge API
  • Data Formatters
  • Formatter Bytecode
  • Adding Programming Language Support
  • Caveats
  • Open Projects

Protocol & Format Specifications

  • GDB Remote Protocol Extensions
  • LLDB Platform Packets
  • DWARF Extensions
  • JSON Symbol File Format

Resources

  • Links
  • Source Code
  • Releases
  • Discord Channel
  • Discussion Forums
  • Developer Policy
  • Bug Reports
  • Code Reviews
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Links¶

This page contains links to external resources on how to use LLDB. Being listed on this page is not an endorsement.

Blog Posts¶

Dancing in the Debugger — A Waltz with LLDB (2014)¶

A high level overview of LLDB with a focus on debugging Objective-C code.

Videos¶

Run, Break, Inspect: Explore effective debugging in LLDB (2024)¶

Learn how to use LLDB to explore and debug codebases. We’ll show you how to make the most of crashlogs and backtraces, and how to supercharge breakpoints with actions and complex stop conditions. We’ll also explore how the “p” command and the latest features can enhance your debugging experience.

LLDB: Beyond “po” (2019)¶

LLDB is a powerful tool for exploring and debugging your app at runtime. Discover the various ways to display values in your app, how to format custom data types, and how to extend LLDB using your own Python 3 scripts.

Advanced Debugging with Xcode and LLDB (2018)¶

Discover advanced techniques, and tips and tricks for enhancing your Xcode debugging workflows. Learn how to take advantage of LLDB and custom breakpoints for more powerful debugging. Get the most out of Xcode’s view debugging tools to solve UI issues in your app more efficiently.

Books¶

Advanced Apple Debugging & Reverse Engineering (2018)¶

A book about using LLDB on Apple platforms.

Extensions¶

facebook/chisel¶

Chisel is a collection of LLDB commands to assist in the debugging of iOS apps.

DerekSelander/LLDB¶

A collection of LLDB aliases/regexes and Python scripts.

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Last updated on Apr 18, 2026
On this page
  • Links
    • Blog Posts
      • Dancing in the Debugger — A Waltz with LLDB (2014)
    • Videos
      • Run, Break, Inspect: Explore effective debugging in LLDB (2024)
      • LLDB: Beyond “po” (2019)
      • Advanced Debugging with Xcode and LLDB (2018)
    • Books
      • Advanced Apple Debugging & Reverse Engineering (2018)
    • Extensions
      • facebook/chisel
      • DerekSelander/LLDB