schduler_switch: Save EX before ADD

Fixes #33
FrOSt-Foundation · Oct 16, 2016 · 987aebb · 987aebb
1 parent d4db1d7
commit 987aebb
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/kernel/scheduler/scheduler_switch.dasm b/src/kernel/scheduler/scheduler_switch.dasm
@@ -4,6 +4,8 @@
     ife [n_processes], 1
         set PC, scheduler_switch_end
 
+    set PUSH, EX
+
     set A, [processes]
     add A, [running_process]
     set A, [A]
@@ -15,7 +17,6 @@
     set PUSH, Z
     set PUSH, I
     set PUSH, J
-    set PUSH, EX
     set [A], SP
 
     :scheduler_abort
@@ -30,7 +31,6 @@
     set A, [A]
 
     set SP, [A]
-    set EX, POP
     set J, POP
     set I, POP
     set Z, POP
@@ -39,5 +39,7 @@
     set C, POP
     set B, POP
 
+    set EX, POP
+
     :scheduler_switch_end
     rfi 0