Changeset e1d93e3 in mainline for kernel/generic/src/interrupt/interrupt.c

Timestamp:

2023-08-02T14:51:11Z (17 months ago)

Author:

Vojtech Horky <vojtech.horky@…>

Branches:

ticket/834-toolchain-update

Children:

320762a

Parents:

0557618

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
 }