dyld-635.2
源码,https://opensource.apple.com/tarballs/dyld/
dyld,最开始的入口点在dyld里的_dyld_start
函数,从内核态切换过来。
导出函数相关
MachO文件格式,ImageLoaderMachOCompressed/ImageLoaderMachOClassic。
现在iOS/MacOSX支持的都是Compressed格式。
参考:
- http://networkpx.blogspot.com/2009/09/about-lcdyldinfoonly-command.html
- https://opensource.apple.com/source/xnu/xnu-4903.221.2/EXTERNAL_HEADERS/mach-o/loader.h.auto.html
- https://en.wikipedia.org/wiki/MacOS
PAC指针保护,pointer authentication codes (PACs)
,ARMv8.3提供,2018的iPhone models (XS/XS Max/XR)引入。
__has_feature(ptrauth_calls)
编译器支持。
参考:
- https://developer.apple.com/documentation/security/preparing_your_app_to_work_with_pointer_authentication?language=objc
- ptrauth.h
- http://quabr.com/52624308/xcode-arm64-vs-arm64e
- https://www.4hou.com/mobile/13756.html
- https://go