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   6 <title>LLDB Status</title>
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  11       The <strong>LLDB</strong> Debugger
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  20                 <h1 class ="postheader">Mac OS X Status</h1>
  21                 <div class="postcontent">
  22
  23                    <p>LLDB has matured a lot in the last year and can be used for
  24                    C, C++ and Objective C development for x86_64, i386 and ARM debugging.
  25                    The entire public API is exposed though a framework on Mac OS X which
  26                    is used by Xcode, the lldb command line tool, and can also be used by
  27                    Python. The entire public API is exposed through script bridging which
  28                    allows LLDB to use an embedded Python script interpreter, as well as
  29                    having a Python module named "lldb" which can be used from Python
  30                    on the command line. This allows debug sessions to be scripted. It also
  31                    allows powerful debugging actions to be created and attached to a variety
  32                    of debugging workflows.</p>
  33                 </div>
  34                 <h1 class ="postheader">Linux Status</h1>
  35                 <div class="postcontent">
  36                     <p> LLDB is improving on Linux. While the debugserver has not been ported
  37                     (to enable remote debugging) Linux is nearing feature completeness with Darwin
  38                     to debug x86_64 programs, and is partially working with i386 programs.
  39                     ARM architectures on Linux are untested.
  40                     For more details, see the Features by OS section below.
  41                 </div>
  42                 <h1 class ="postheader">FreeBSD Status</h1>
  43                 <div class="postcontent">
  44                     <p> LLDB on FreeBSD lags behind the Linux implementation but is improving rapidly.
  45                     For more details, see the Features by OS section below.
  46                 </div>
  47                 <h1 class ="postheader">Windows Status</h1>
  48                 <div class="postcontent">
  49                     <p> LLDB on Windows is still under development, but already useful for i386
  50                     programs (x86_64 untested) built with DWARF debug information, including postmortem
  51                     analysis of minidumps.
  52                     For more details, see the Features by OS section below.
  53                 </div>
  54                 <h1 class ="postheader">Features by OS</h1>
  55                 <div class="postcontent">
  56                     <p> The table below shows a summary of the features that are available
  57                     on several platforms. In addition to Linux and Mac OS X, LLDB is also
  58                     known to work on FreeBSD. NetBSD support is under development.
  59                         <table border="1">
  60                             <tr>
  61                                 <th>Feature</th>
  62                                 <th>FreeBSD<br>(x86_64)</th>
  63                                 <th>Linux<br>(x86_64)</th>
  64                                 <th>Mac OS X (i386/x86_64 and ARM/Thumb)</th>
  65                                 <th>Windows (i386)</th>
  66                             </tr>
  67                             <tr>
  68                                 <td>Backtracing</td>
  69                                 <td>OK</td>
  70                                 <td>OK</td>
  71                                 <td>OK</td>
  72                                 <td>OK</td>
  73                             </tr>
  74                             <tr>
  75                                 <td>Breakpoints
  76                                     <ul>
  77                                         <li>source-line
  78                                         <li>symbolic
  79                                         <li>C++ mangled names
  80                                         <li>module scoping
  81                                     </ul>
  82                                 </td>
  83                                 <td>OK</td>
  84                                 <td>OK</td>
  85                                 <td>OK</td>
  86                                 <td>OK</td>
  87                             </tr>
  88                             <tr>
  89                                 <td>C++11:
  90                                 <ul>
  91                                     <li>function access
  92                                     <li>template support
  93                                     <li>dynamic types
  94                                 </ul></td>
  95                                 <td>OK</td>
  96                                 <td>OK</td>
  97                                 <td>OK</td>
  98                                 <td>Unknown</td>
  99                             </tr>
 100                             <tr>
 101                                 <td>Commandline lldb tool</td>
 102                                 <td>OK</td>
 103                                 <td>OK</td>
 104                                 <td>OK</td>
 105                                 <td>OK</td>
 106                             </tr>
 107                             <tr>
 108                                 <td>Core file debugging</td>
 109                                 <td>OK (ELF)</td>
 110                                 <td>OK (ELF)</td>
 111                                 <td>OK (MachO)</td>
 112                                 <td>OK (Minidump)</td>
 113                             </tr>
 114                             <tr>
 115                                 <td>Debugserver (remote debugging)</td>
 116                                 <td>Not ported</td>
 117                                 <td>Not ported</td>
 118                                 <td>OK</td>
 119                                 <td>Not ported</td>
 120                             </tr>
 121                             <tr>
 122                                 <td>Disassembly</td>
 123                                 <td>OK</td>
 124                                 <td>OK</td>
 125                                 <td>OK</td>
 126                                 <td>OK</td>
 127                             </tr>
 128                             <tr>
 129                                 <td>Expression evaluation</td>
 130                                 <td>Unknown</td>
 131                                 <td>Works with some bugs</td>
 132                                 <td>OK</td>
 133                                 <td>Works with some bugs</td>
 134                             </tr>
 135                             <tr>
 136                                 <td>JIT debugging</td>
 137                                 <td>Unknown</td>
 138                                 <td>Symbolic debugging only</td>
 139                                 <td>Untested</td>
 140                                 <td>No</td>
 141                             </tr>
 142                             <tr>
 143                                 <td>Objective-C 2.0:
 144                                     <ul>
 145                                         <li>printing properties
 146                                         <li>synthetic properties
 147                                         <li>expressions
 148                                         <li>KVO
 149                                         <li>dynamic types
 150                                         <li>dot syntax
 151                                         <li>runtime data
 152                                         <li>stepping into/over
 153                                         <li>printing the description of an object ("po")
 154                                 </ul></td>
 155                                 <td>Unknown</td>
 156                                 <td>Not applicable</td>
 157                                 <td>OK</td>
 158                                 <td>Not applicable</td>
 159                             </tr>
 160                             <tr>
 161                                 <td>Process control
 162                                     <ul>
 163                                         <li>attach
 164                                         <li>continue
 165                                         <li>exec, execve...
 166                                         <li>fork
 167                                         <li>launch
 168                                         <li>status
 169                                     </ul>
 170                                 </td>
 171                                 <td>Works, with some bugs</td>
 172                                 <td>OK (except exec*)</td>
 173                                 <td>OK</td>
 174                                 <td>OK</td>
 175                             </tr>
 176                             <tr>
 177                                 <td>Public Python API</td>
 178                                 <td>OK (Python 2.7)</td>
 179                                 <td>OK (Python 2.7)</td>
 180                                 <td>OK (Python 2.7)</td>
 181                                 <td>OK (Python 3.5)</td>
 182                             </tr>
 183                             <tr>
 184                                 <td>Registers (x86_64 and i386)
 185                                     <ul>
 186                                         <li>general purpose
 187                                         <li>floating point
 188                                         <li>exception state
 189                                         <li>SSE
 190                                         <li>AVX
 191                                     </ul>
 192                                 </td>
 193                                 <td>GP and FP OK</td>
 194                                 <td>OK (except for exception state registers)</td>
 195                                 <td>OK</td>
 196                                 <td>OK (except for AVX support)</td>
 197                             </tr>
 198                             <tr>
 199                                 <td>Symbol reading and object file introspection</td>
 200                                 <td>OK</td>
 201                                 <td>OK</td>
 202                                 <td>OK</td>
 203                                 <td>OK (no PDB yet)</td>
 204                             </tr>
 205                             <tr>
 206                                 <td>Thread inspection and stepping</td>
 207                                 <td>OK</td>
 208                                 <td>OK</td>
 209                                 <td>OK</td>
 210                                 <td>OK</td>
 211                             </tr>
 212                             <tr>
 213                                 <td>Watchpoints</td>
 214                                 <td>OK</td>
 215                                 <td>OK</td>
 216                                 <td>OK</td>
 217                                 <td>Not ported yet</td>
 218                             </tr>
 219                         </table>
 220                 </div>
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