Changeset dfb16c4 in mainline

Timestamp:

2023-10-22T17:26:17Z (7 months ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

78f0422c

Parents:

e8c235b

git-author:

Vojtech Horky <vojtech.horky@…> (2023-08-02 14:51:11)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-10-22 17:26:17)

Message:

Panic on unexpected use of exception handling

File:

• kernel/generic/src/interrupt/interrupt.c (modified) (5 diffs)

kernel/generic/src/interrupt/interrupt.c

@@ -58 +58 @@
 #include <trace.h>
 
+/*
+ * If IVT_ITEMS is zero (e.g. for special/abs32le) we hide completely any
+ * access to the exception table array and panic if the function is called
+ * at all. It also silences (correct) compiler warnings about possible
+ * out-of-bound array access.
+ */
+
 exc_table_t exc_table[IVT_ITEMS];
 IRQ_SPINLOCK_INITIALIZE(exctbl_lock);
@@ -77 +84 @@
 #if (IVT_ITEMS > 0)
         assert(n < IVT_ITEMS);
-#endif
 
         irq_spinlock_lock(&exctbl_lock, true);
@@ -91 +97 @@
 
         return old;
+#else
+        panic("No space for any exception handler, cannot register.");
+#endif
 }
 
@@ -103 +112 @@
 #if (IVT_ITEMS > 0)
         assert(n < IVT_ITEMS);
-#endif
 
         /* Account user cycles */
@@ -152 +160 @@
                 irq_spinlock_unlock(&THREAD->lock, false);
         }
+#else
+        panic("No space for any exception handler, yet we want to handle some exception.");
+#endif
 }