[Lldb-commits] [lldb] [lldb] [DynamicLoaderPOSIXDYLD] Enable POSIX-DYLD for QNX (PR #97536)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lldb

Author: Ayush Sahay (ayushsahay1837)

<details>
<summary>Changes</summary>

This change enables the _POSIX_ dynamic loader plugin for _QNX_, and is the fourth in a series of changes that look to facilitate remote debug of _AArch64_ targets on _QNX_.

_QNX Neutrino Real-Time Operating System_ is a commercial Unix-like real-time operating system primarily targeting the embedded systems market including automotive, medical devices, robotics, transportation, and industrial embedded systems.

The series of changes in question looks to provision support for –

- Launching a debuggee
- Attaching to a debuggee
- Having the debuggee come up stopped at the entry point
- Setting breakpoints
- Stopping at breakpoints
- Reading/writing contents of/to the debuggee's memory
- Reading/writing contents of/to the debuggee's registers
- Reading/writing contents of/to the debuggee's variables
- Resuming the debuggee's execution
- Single-stepping the debuggee's execution
- Interrupting the debuggee's execution
- Dumping information pertaining to the debuggee's stack trace

Kindly note that _ptrace_ isn't available on QNX. Instead, _devctl_ can be leveraged to observe and control the execution of a process under debug on _QNX_.

Any additional support (including the facilitation of execution of tests) will be the subject of future work.

---
Full diff: https://github.com/llvm/llvm-project/pull/97536.diff


1 Files Affected:

- (modified) lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp (+2-1) 


``````````diff
diff --git a/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp b/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
index 51e4b3e6728f2..7bff55e5cd347 100644
--- a/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
+++ b/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
@@ -54,7 +54,8 @@ DynamicLoader *DynamicLoaderPOSIXDYLD::CreateInstance(Process *process,
     if (triple_ref.getOS() == llvm::Triple::FreeBSD ||
         triple_ref.getOS() == llvm::Triple::Linux ||
         triple_ref.getOS() == llvm::Triple::NetBSD ||
-        triple_ref.getOS() == llvm::Triple::OpenBSD)
+        triple_ref.getOS() == llvm::Triple::OpenBSD ||
+        triple_ref.getOS() == llvm::Triple::QNX)
       create = true;
   }
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/97536