From ec6c6dd988737d8d6817e4ac205a4e693b8d2ecf Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Sun, 13 Feb 2022 13:48:05 +0800
Subject: [PATCH] add comments about
 preallocate_runtime_exception_names/EXCEPTION_ID_LOOKUP syncing

---
 artiq/firmware/ksupport/eh_artiq.rs | 1 +
 artiq/language/embedding_map.py     | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/artiq/firmware/ksupport/eh_artiq.rs b/artiq/firmware/ksupport/eh_artiq.rs
index 30e173dc0..e782f783c 100644
--- a/artiq/firmware/ksupport/eh_artiq.rs
+++ b/artiq/firmware/ksupport/eh_artiq.rs
@@ -333,6 +333,7 @@ extern fn stop_fn(_version: c_int,
     }
 }
 
+// Must be kept in sync with preallocate_runtime_exception_names() in artiq/language/embedding_map.py
 static EXCEPTION_ID_LOOKUP: [(&str, u32); 10] = [
     ("RuntimeError", 0),
     ("RTIOUnderflow", 1),
diff --git a/artiq/language/embedding_map.py b/artiq/language/embedding_map.py
index 87d0ab9b6..3ff224b67 100644
--- a/artiq/language/embedding_map.py
+++ b/artiq/language/embedding_map.py
@@ -11,6 +11,8 @@ class EmbeddingMap:
         self.function_map = {}
 
         # preallocate exception names
+        # must be kept in sync with EXCEPTION_ID_LOOKUP in artiq/firmware/ksupport/eh_artiq.rs,
+        # and src/runtime/src/eh_artiq.rs (Zynq)
         self.preallocate_runtime_exception_names(["RuntimeError",
                                           "RTIOUnderflow",
                                           "RTIOOverflow",