[emurt] add simple write char test

Signed-off-by: Avimitin <[email protected]>

tests/default.nix

@@ -90,11 +90,12 @@ let
     rvv_bench = casesSelf.callPackage ./rvv_bench { };
     pytorch = casesSelf.callPackage ./pytorch { };
     disp = casesSelf.callPackage ./disp { };
+    emurt = casesSelf.callPackage ./emurt/tests { };
   }));
 
   # remove non-case attributes in scope
   scopeStripped = {
-    inherit (scope) mlir intrinsic asm perf codegen rvv_bench pytorch disp;
+    inherit (scope) mlir intrinsic asm perf codegen rvv_bench pytorch disp emurt;
   };
 
   # This derivation is for internal CI use only.

tests/emurt/tests/default.nix

@@ -0,0 +1,31 @@
+{ linkerScript, t1main, makeBuilder, writeText }:
+let
+  builder = makeBuilder { casePrefix = "emurt"; };
+in
+{
+  simple = builder {
+    caseName = "simple";
+
+    dontUnpack = true;
+    csrc = writeText "simple-emurt-test.c" ''
+      #include <emurt.h>
+
+      void test() {
+        place_counter(1);
+        print_s("helloworld");
+        place_counter(2);
+      }
+    '';
+
+    buildPhase = ''
+      runHook preBuild
+
+      $CC -T${linkerScript} \
+        $csrc \
+        ${t1main} \
+        -o $pname.elf
+
+      runHook postBuild
+    '';
+  };
+}