Extending LLDB to More Scripting Languages Jonas Devlieghere, Apple - - PowerPoint PPT Presentation

▶

Feb 27, 2024 142 likes •311 views

Extending LLDB to More Scripting Languages Jonas Devlieghere, Apple C++ API Scripting Bridge API Scripting Bridge API SBThread SBDebugger SBBreakpoint SBTarget SBFrame SBSymbol SBValue SBProcess SBFunction Python Python

SLIDE 1

Jonas Devlieghere, Apple

Extending LLDB to More Scripting Languages

SLIDE 2

C++ API

SLIDE 3

Scripting Bridge API

SLIDE 4

Scripting Bridge API

SBDebugger SBTarget SBProcess SBThread SBFrame SBValue SBBreakpoint SBSymbol SBFunction

SLIDE 5

Python

SLIDE 6

#!/usr/bin/python import lldb dbg = lldb.SBDebugger.Create() target = dbg.CreateTarget("a.out") target.BreakpointCreateByName("foo") process = target.LaunchSimple(...)

$ lldb (lldb) script >>> frame = lldb.frame >>> print(frame.IsInlined()) False (lldb) command script import foo.py (lldb) foo I'm a Python script!

Python

SLIDE 7

Another Scripting Language

SLIDE 8

Another Scripting Language

SLIDE 9

Script Interpreter

Execute a single line of code
Run an interactive interpreter
Load a module

(lldb) script >>> io.stdout:write("Hello, World!\n") Hello, World! (lldb) command script import foo.lua (lldb) foo I'm a Lua script!

SLIDE 10

SWIG

SLIDE 11

SWIG

C#
D
Go
Guile
Java
JavaScript
Lua
Racket
OCaml
Octave
Perl
PHP
Python
R
Ruby
Scilab
Tcl/Tk

SLIDE 12

Language Bindings

SLIDE 13

Language Bindings

(lldb) script --language lua >>> frame = lldb.frame >>> print(frame:IsInlined()) false (lldb) script --language python >>> frame = lldb.frame >>> print(frame.IsInlined()) False

SLIDE 14

Future Work

Breakpoint/Watchpoint callbacks
Lua Type Summaries

SLIDE 15

Conclusion

Designed for multiple scripting languages
Stable SB API
Generated language bindings