Changes in kernel/generic/src/interrupt/interrupt.c [96b02eb9:1ad52de] in mainline

File:

• kernel/generic/src/interrupt/interrupt.c (modified) (1 diff)

kernel/generic/src/interrupt/interrupt.c

@@ -209 +209 @@
 }
 
+/** Get istate structure of a thread.
+ *
+ * Get pointer to the istate structure at the bottom of the kernel stack.
+ *
+ * This function can be called in interrupt or user context. In interrupt
+ * context the istate structure is created by the low-level exception
+ * handler. In user context the istate structure is created by the
+ * low-level syscall handler.
+ */
+istate_t *istate_get(thread_t *thread)
+{
+        /*
+         * The istate structure should be right at the bottom of the kernel
+         * stack.
+         */
+        return (istate_t *) ((uint8_t *) thread->kstack + THREAD_STACK_SIZE -
+            sizeof(istate_t));
+}
+
 #ifdef CONFIG_KCONSOLE