================
@@ -0,0 +1,270 @@
+# Adding Target Support
+
+LLDB supports many combinations of architecture, operating system and other
+system components. In this document we describe the considerations and
+requirements for porting LLDB to a combination of those things. Which we will
+refer to as a "target" within this document.
+
+:::{note}
+The terms `Target` and `Platform` are used throughout LLDB, often
+referring to a subset of what this document calls a "target".
+Unfortunately there is no more specific word to use here.
+
+This document provides some hints on implementation, but because every target
+is unique, we expect developers to learn about implementation from existing
+targets.
+
+This document starts with the end of the process, proposing your taret for
+upstream inclusion. It is worth reading through this even if that is not one of
+your goals, as you will have to tackle the same topics even in a downstream
+implementation.
+
+## Upstreaming Proposal Process
+
+You must send an RFC to the LLDB Discourse forum before upstreaming
+new target support. This RFC must be accepted in some form by the community
+before any changes can be merged upstream that are specific to your target.
+
+This RFC follows the normal rules of the LLVM community decision making
process.
+
+We require an RFC for target support upstreaming because:
+* We want ensure there is some level of public discussion on the topic.
+ It is important that details, even those obvious to the community at the
time,
+ are written down so that future readers may learn from it.
+
+ :::{note}
+ Assuming they were done in good faith, these discussions are not to be used
+ to personally criticise anyone after the fact. Situations change, people make
+ mistakes, and that is ok.
----------------
DavidSpickett wrote:
No, it's based on a feeling I get for why people don't want to put things on
the record. It's definitely more about that than it is someone trying to be
sneaky and smuggle something upstream.
This should be clear from the llvm RFC process and code of conduct already, so
I'll remove it.
https://github.com/llvm/llvm-project/pull/207166
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