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| The <strong>LLDB</strong> Debugger |
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| <h1 class ="postheader">Mac OS X Status</h1> |
| <div class="postcontent"> |
| |
| <p>LLDB has matured a lot in the last year and can be used for |
| C, C++ and Objective C development for x86_64, i386 and ARM debugging. |
| The entire public API is exposed though a framework on Mac OS X which |
| is used by Xcode, the lldb command line tool, and can also be used by |
| Python. The entire public API is exposed through script bridging which |
| allows LLDB to use an embedded Python script interpreter, as well as |
| having a Python module named "lldb" which can be used from Python |
| on the command line. This allows debug sessions to be scripted. It also |
| allows powerful debugging actions to be created and attached to a variety |
| of debugging workflows.</p> |
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| <h1 class ="postheader">Linux Status</h1> |
| <div class="postcontent"> |
| <p> LLDB is improving on Linux. While the debugserver is not ported |
| (to enable remote debugging) and debugging of multi-threaded programs is in its infancy, most |
| of the functionality, including the Python API and the command line tool, |
| is working on the x86_64 architecture, and partially working with i386. |
| FreeBSD is untested. ARM architectures on Linux are untested. |
| For more details, see the Features by OS section below. |
| </div> |
| <h1 class ="postheader">Features by OS</h1> |
| <div class="postcontent"> |
| <p> The table below shows a summary of the features that are available |
| on several platforms. In addition to Linux and Mac OS X, LLDB is also |
| known to work on FreeBSD. Windows support is under development. |
| <table border="1"> |
| <tr> |
| <th>Feature</th> |
| <th>Linux<br>(x86_64)</th> |
| <th>Mac OS X (i386/x86_64 and ARM/Thumb)</th> |
| </tr> |
| <tr> |
| <td>Backtracing</td> |
| <td>OK (except with targets built with -fomit-frame-pointer)</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Breakpoints |
| <ul> |
| <li>source-line |
| <li>symbolic |
| <li>C++ mangled names |
| <li>module scoping |
| </ul> |
| </td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>C++11: |
| <ul> |
| <li>function access |
| <li>template support |
| <li>dynamic types |
| </ul></td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Commandline lldb tool</td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Debugserver (remote debugging)</td> |
| <td>Not ported</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Disassembly</td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Expression evaluation</td> |
| <td>Works with some bugs</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Objective-C 2.0: |
| <ul> |
| <li>printing properties |
| <li>synthetic properties |
| <li>expressions |
| <li>KVO |
| <li>dynamic types |
| <li>dot syntax |
| <li>runtime data |
| <li>stepping into/over |
| <li>printing the description of an object ("po") |
| </ul></td> |
| <td>Not applicable</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Process control |
| <ul> |
| <li>launch |
| <li>attach |
| <li>continue |
| <li>fork |
| </ul> |
| </td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Public Python API</td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Registers (x86_64 and i386) |
| <ul> |
| <li>general purpose |
| <li>floating point |
| <li>exception state |
| <li>SSE |
| <li>AVX |
| </ul> |
| </td> |
| <td>OK (except for exception state registers)</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Script bridging</td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Symbol reading and object file introspection</td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Thread inspection and stepping</td> |
| <td>OK for single thread (no multi-threaded support)</td> |
| <td>OK</td> |
| </tr> |
| <tr> |
| <td>Watchpoints</td> |
| <td>OK</td> |
| <td>OK</td> |
| </tr> |
| </table> |
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