Merge pull request #1294 from tannewt/stack_check4.0.0-alpha.4

Add stack validity check and raise an error when it happens.

1 files changed, 47 insertions, 0 deletions

diff --git a/supervisor/shared/safe_mode.h b/supervisor/shared/safe_mode.h
new file mode 100644
index 000000000..eba2668ac
--- /dev/null
+++ b/supervisor/shared/safe_mode.h
@@ -0,0 +1,47 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SUPERVISOR_SAFE_MODE_H
+#define MICROPY_INCLUDED_SUPERVISOR_SAFE_MODE_H
+
+typedef enum {
+  NO_SAFE_MODE = 0,
+  BROWNOUT,
+  HARD_CRASH,
+  USER_SAFE_MODE,
+  HEAP_OVERWRITTEN,
+  MANUAL_SAFE_MODE,
+  MICROPY_NLR_JUMP_FAIL,
+  MICROPY_FATAL_ERROR
+} safe_mode_t;
+
+safe_mode_t wait_for_safe_mode_reset(void);
+
+void reset_into_safe_mode(safe_mode_t reason);
+
+void print_safe_mode_message(safe_mode_t reason);
+
+#endif  // MICROPY_INCLUDED_SUPERVISOR_SAFE_MODE_H