问题
I can attach LLDB to a program written in Swift and access the REPL, either from within Xcode or by running:
lldb -n ProcessName
(lldb) repl
1>
However, if I attach LLDB to a process which doesn't have the Swift runtime, the REPL isn't very useful. For example:
lldb -n Finder
Process 218 stopped
Executable module set to "/System/Library/CoreServices/Finder.app/Contents/MacOS/Finder".
Architecture set to: x86_64-apple-macosx.
(lldb) repl
1> import Cocoa
error: Couldn't lookup symbols:
__swift_FORCE_LOAD_$_swiftAppKit
__swift_FORCE_LOAD_$_swiftCoreGraphics
__swift_FORCE_LOAD_$_swiftObjectiveC
__swift_FORCE_LOAD_$_swiftDispatch
__swift_FORCE_LOAD_$_swiftDarwin
__swift_FORCE_LOAD_$_swiftFoundation
Any idea on how to load the Swift runtime into a process which isn't linked against it already? This could be a very useful alternative to e.g. injecting F-Script.
回答1:
dlopen() to the rescue!
Download this script and save it e.g. to ~/.lldb/inject-swift-repl
Then run lldb -n Finder --source .lldb/inject-swift-repl to inject all necessary libraries. Note that you need to disable SIP to mess with the Finder. Also note that sometimes I had to exit LLDB and re-run the script, because some dlopen calls failed and returned 0.
回答2:
For Xcode 10/Swift 4.2 I had to load the libs in this order
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCore.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftDarwin.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftObjectiveC.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftRemoteMirror.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftSwiftOnoneSupport.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftsimd.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftDispatch.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreFoundation.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreGraphics.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftFoundation.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreData.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftAssetsLibrary.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftModelIO.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftos.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftMetal.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftNetwork.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreImage.dylib
process load /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftQuartzCore.dylib
来源：https://stackoverflow.com/questions/24715891/access-a-swift-repl-in-cocoa-programs