https://github.com/qyang-nj/llios

Random stuff about lower level iOS
https://github.com/qyang-nj/llios

Last synced: 3 months ago
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Random stuff about lower level iOS

• Host: GitHub
• URL: https://github.com/qyang-nj/llios
• Owner: qyang-nj
• Created: 2021-04-10T06:06:47.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2024-03-25T05:39:17.000Z (8 months ago)
• Last Synced: 2024-04-16T11:57:44.932Z (7 months ago)
• Language: C++
• Size: 22.7 MB
• Stars: 244
• Watchers: 17
• Forks: 22
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Low Level iOS

This repo is mostly my study notes about low level iOS.

## Topics

* [Mach-O Parser](./macho_parser) - writing a Mach-O format parser while learning it

    * [LC_SEGMENT_64](./macho_parser/docs/LC_SEGMENT_64.md) - segments and sections

    * [LC_SYMTAB](./macho_parser/docs/LC_SYMTAB.md) - symbol table

    * [LC_DYSYMTAB](./macho_parser/docs/LC_DYSYMTAB.md) - dynamic symbol table

    * [LC_DYLD_INFO(_ONLY)](./macho_parser/docs/LC_DYLD_INFO.md) - information for dyld

    * [LC_DYLD_CHAINED_FIXUPS](./dynamic_linking/chained_fixups.md) - the new way to encode dyld info

    * [LC_DYLD_EXPORTS_TRIE](./exported_symbol/README.md) - the new command for exported symbols

    * [LC_DYLD_ENVIRONMENT](./macho_parser/docs/LC_DYLD_ENVIRONMENT.md) - embed environment variables in the binary

    * [LC_LINKER_OPTION](./macho_parser/docs/LC_LINKER_OPTION.md) - auto linking

    * [LC_BUILD_VERSION](./macho_parser/docs/LC_BUILD_VERSION.md) - platform requirements

    * [LC_MAIN](./macho_parser/docs/LC_MAIN.md) - the entry point of an executable

    * [LC_ENCRYPTION_INFO_64](./macho_parser/docs/LC_ENCRYPTION_INFO.md) - FairPlay encryption

    * [LC_FUNCTION_STARTS](./macho_parser/docs/LC_FUNCTION_STARTS.md) - function addresses

    * [LC_*_DYLIB and LC_RPATH](./macho_parser/docs/LC_dylib.md) - dylib related load commands

    * [LC_CODE_SIGNATURE](./macho_parser/docs/LC_CODE_SIGNATURE.md) - code signing and code signature format

* Building

    * [Build iOS App](./build_ios_app) - build and debug an iOS app without an IDE

    * [Build Swift Macros](./articles/BuildSwiftMacros.md)

    * [Mixed Language Compiling](./articles/MixedModuleCompiling.md)

    * [Module Map](./articles/ModuleMap.md) - common formats of `module.modulemap`

    * [Import Search Path](./import_search_path) - how import search path (`-I`) affects build time

    * [Swift Generated ObjC Header](./building/swift_generated_objc_header/README.md)

    * [Dead Code Elimination](./dce)

    * [Swift Source Info (`.swiftsourceinfo`)](./articles/SwiftSourceInfo.md)

* Dynamic Linking

    * [How does dynamic linking works](./dynamic_linking)

    * [Exported Symbols](./exported_symbol/) - details of how exported symbols are stored

    * [Binding Info](./dynamic_linking/docs/BindingInfo.md) - details of binding opcodes

    * [Chained Fixups](./dynamic_linking/chained_fixups.md) - the new way to store dyld info

    * [Dynamic Interposing](./dynamic_linking/dynamic_interposing.md) - replace function implementation at runtime

* Testing

    * [Behind the scenes: iOS Testing](./articles/iOSTesting.md)

    * [Behind the scenes: Code Coverage](./articles/CodeCoverage.md)

    * [Code Coverage on Test Crash](./articles/CodeCoverageOnTestCrash.md)

    * [Archived] [XCTest](./xctest)

* Xcode

    * [Behind the scenes: SwiftUI Previews](./articles/SwiftUIPreview.md)

    * [Xcode.app Directory Structure](./articles/XcodeDirectoryStructure.md)