LLDB Platform Packets

This is a list of the packets that an lldb platform server needs to implement for the lldb testsuite to be run on a remote target device/system.

These are almost all lldb extensions to the gdb-remote serial protocol. Many of the vFile: packets are also described in the “Host I/O Packets” detailed in the gdb-remote protocol documentation, although the lldb platform extensions include packets that are not defined there (vFile:size:, vFile:mode:, vFile:symlink, vFile:chmod:).

Most importantly, the flags that LLDB passes to vFile:open: are incompatible with the flags that GDB specifies.

• QSetWorkingDir

• QStartNoAckMode

• qGetWorkingDir

• qHostInfo

• qKillSpawnedProcess

• qLaunchGDBServer

• qModuleInfo

• qPathComplete

• qPlatform_mkdir

• qPlatform_shell

• qProcessInfo

  • The lldb test suite currently only uses name_match:equals and the no-criteria mode to list every process.

• qProcessInfoPID

  • It is likely that you only need to support the pid and name fields.

• vFile:chmod

• vFile:close

• vFile:mode

• vFile:open

• vFile:pread

• vFile:pwrite

• vFile:size

• vFile:symlink

• vFile:unlink

The remote platform must be able to launch processes so that debugserver can attach to them. This requires the following packets in addition to the previous list:

• A

• QEnvironment

• QEnvironmentHexEncoded

• QSetDetatchOnError

• QSetDisableASLR

• QSetSTDIN / QSetSTDOUT / QSetSTDERR (all 3)

• qLaunchSuccess