Improve Power execution

- Move FDE loop to the OCaml side of the Power model (avoid leaking
  memory due to lack of TCO in interpreter)
- Display cycle count
- Check the value of CIA at the end of each cycle and stop if it is
  equal to the initial value of LR, returning the value in GPR3.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lem_interp/run_interp.ml b/src/lem_interp/run_interp.ml
index 7100a197..556e61c6 100644
--- a/src/lem_interp/run_interp.ml
+++ b/src/lem_interp/run_interp.ml
@@ -208,14 +208,14 @@ let run
   ?(mem=Mem.empty)
   (name, test) =
   let rec loop env = function
-  | Value (v, _) -> eprintf "%s: returned %s\n" name (val_to_string v); true
+  | Value (v, _) -> eprintf "%s: returned %s\n" name (val_to_string v); true, env
   | Action (a, s) ->
       eprintf "%s: suspended on action %s\n" name (act_to_string a);
       (*eprintf "%s: suspended on action %s, with stack %s\n" name (act_to_string a) (stack_to_string s);*)
       let return, env' = perform_action env a in
       eprintf "%s: action returned %s\n" name (val_to_string return);
       loop env' (resume test s return)
-  | Error(l, e) -> eprintf "%s: %s: error: %s\n" name (loc_to_string l) e; false in
+  | Error(l, e) -> eprintf "%s: %s: error: %s\n" name (loc_to_string l) e; false, env in
   eprintf "%s: starting\n" name;
   try
     Printexc.record_backtrace true;
@@ -223,5 +223,5 @@ let run
   with e ->
     let trace = Printexc.get_backtrace () in
     eprintf "%s: interpretor error %s\n%s\n" name (Printexc.to_string e) trace;
-    false
+    false, (reg, mem)
 ;;