runtime: fix drtio inject lock

flake.lock

@@ -11,11 +11,11 @@
         "src-pythonparser": "src-pythonparser"
       },
       "locked": {
-        "lastModified": 1722417433,
-        "narHash": "sha256-QEbcVdL1sUQEbMCvCUvPM8DKqwOth3gJpdiLTf4hPN8=",
+        "lastModified": 1724411572,
+        "narHash": "sha256-33vj/pJ9iaVvaFP8uuBKMSQPN20mRlCbeBkTCNc9WB4=",
         "ref": "refs/heads/master",
-        "rev": "0623480c82c28d57e14dc4f363374758a52284d3",
-        "revCount": 8952,
+        "rev": "352cf907ee67f7db5478fe23217cd5fcb7334617",
+        "revCount": 8996,
         "type": "git",
         "url": "https://github.com/m-labs/artiq.git"
       },
@@ -102,11 +102,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1721924956,
-        "narHash": "sha256-Sb1jlyRO+N8jBXEX9Pg9Z1Qb8Bw9QyOgLDNMEpmjZ2M=",
+        "lastModified": 1723362943,
+        "narHash": "sha256-dFZRVSgmJkyM0bkPpaYRtG/kRMRTorUIDj8BxoOt1T4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5ad6a14c6bf098e98800b091668718c336effc95",
+        "rev": "a58bc8ad779655e790115244571758e8de055e3d",
         "type": "github"
       },
       "original": {
@@ -131,15 +131,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1722046723,
-        "narHash": "sha256-G7/gHz8ORRvHd1/RIURrdcswKRPe9K0FsIYR4v5jSWo=",
+        "lastModified": 1719454714,
+        "narHash": "sha256-MojqG0lyUINkEk0b3kM2drsU5vyaF8DFZe/FAlZVOGs=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "56baac5e6b2743d4730e664ea64f6d8a2aad0fbb",
+        "rev": "d1c527659cf076ecc4b96a91c702d080b213801e",
         "type": "github"
       },
       "original": {
         "owner": "oxalica",
+        "ref": "snapshot/2024-08-01",
         "repo": "rust-overlay",
         "type": "github"
       }

src/libksupport/src/eh_artiq.rs

@@ -15,7 +15,7 @@
 use core::mem;
 
 use core_io::Error as ReadError;
-use cslice::CSlice;
+use cslice::{AsCSlice, CSlice};
 use dwarf::eh::{self, EHAction, EHContext};
 use io::{Cursor, ProtoRead};
 use libc::{c_int, c_void, uintptr_t};
@@ -222,8 +222,6 @@ pub unsafe fn artiq_personality(
 }
 
 pub unsafe extern "C" fn raise(exception: *const Exception) -> ! {
-    use cslice::AsCSlice;
-
     let count = EXCEPTION_BUFFER.exception_count;
     let stack = &mut EXCEPTION_BUFFER.exception_stack;
     let diff = exception as isize - EXCEPTION_BUFFER.exceptions.as_ptr() as isize;
@@ -477,20 +475,30 @@ extern "C" fn stop_fn(
     }
 }
 
-// Must be kept in sync with preallocate_runtime_exception_names() in artiq/language/embedding_map.py
-static EXCEPTION_ID_LOOKUP: [(&str, u32); 12] = [
-    ("RuntimeError", 0),
-    ("RTIOUnderflow", 1),
-    ("RTIOOverflow", 2),
-    ("RTIODestinationUnreachable", 3),
-    ("DMAError", 4),
-    ("I2CError", 5),
-    ("CacheError", 6),
-    ("SPIError", 7),
-    ("ZeroDivisionError", 8),
-    ("IndexError", 9),
-    ("UnwrapNoneError", 10),
-    ("SubkernelError", 11),
+// Must be kept in sync with preallocate_runtime_exception_names() in `artiq.compiler.embedding`
+static EXCEPTION_ID_LOOKUP: [(&str, u32); 22] = [
+    ("RTIOUnderflow", 0),
+    ("RTIOOverflow", 1),
+    ("RTIODestinationUnreachable", 2),
+    ("DMAError", 3),
+    ("I2CError", 4),
+    ("CacheError", 5),
+    ("SPIError", 6),
+    ("SubkernelError", 7),
+    ("AssertionError", 8),
+    ("AttributeError", 9),
+    ("IndexError", 10),
+    ("IOError", 11),
+    ("KeyError", 12),
+    ("NotImplementedError", 13),
+    ("OverflowError", 14),
+    ("RuntimeError", 15),
+    ("TimeoutError", 16),
+    ("TypeError", 17),
+    ("ValueError", 18),
+    ("ZeroDivisionError", 19),
+    ("LinAlgError", 20),
+    ("UnwrapNoneError", 21),
 ];
 
 pub fn get_exception_id(name: &str) -> u32 {
@@ -525,3 +533,29 @@ macro_rules! artiq_raise {
     }};
     ($name:expr, $message:expr) => {{ artiq_raise!($name, $message, 0, 0, 0) }};
 }
+
+/// Takes as input exception id from host
+/// Generates a new exception with:
+///   * `id` set to `exn_id`
+///   * `message` set to corresponding exception name from `EXCEPTION_ID_LOOKUP`
+///
+/// The message is matched on host to ensure correct exception is being referred
+/// This test checks the synchronization of exception ids for runtime errors
+#[no_mangle]
+pub extern "C" fn test_exception_id_sync(exn_id: u32) {
+    let message = EXCEPTION_ID_LOOKUP
+        .iter()
+        .find_map(|&(name, id)| if id == exn_id { Some(name) } else { None })
+        .unwrap_or("unallocated internal exception id");
+
+    let exn = Exception {
+        id: exn_id,
+        file: file!().as_c_slice(),
+        line: 0,
+        column: 0,
+        function: "test_exception_id_sync".as_c_slice(),
+        message: message.as_c_slice(),
+        param: [0, 0, 0],
+    };
+    unsafe { raise(&exn) };
+}

src/libksupport/src/kernel/api.rs

@@ -332,6 +332,13 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(sp_linalg_schur = linalg::sp_linalg_schur),
         api!(sp_linalg_hessenberg = linalg::sp_linalg_hessenberg),
 
+        /*
+         * syscall for unit tests
+         * Used in `artiq.tests.coredevice.test_exceptions.ExceptionTest.test_raise_exceptions_kernel`
+         * This syscall checks that the exception IDs used in the Python `EmbeddingMap` (in `artiq.language.embedding`)
+         * match the `EXCEPTION_ID_LOOKUP` defined in the firmware (`libksupport::src::eh_artiq`)
+         */
+        api!(test_exception_id_sync = eh_artiq::test_exception_id_sync)
     ];
     api.iter()
         .find(|&&(exported, _)| exported.as_bytes() == required)

src/runtime/src/moninj.rs

@@ -102,7 +102,7 @@ mod remote_moninj {
         overrd: i8,
         value: i8,
     ) {
-        let _lock = aux_mutex.lock();
+        let _lock = aux_mutex.async_lock().await;
         drtioaux_async::send(
             linkno,
             &drtioaux_async::Packet::InjectionRequest {