Implement crash handler and diagnostics app (#119)

2024-12-12 22:38:48 +01:00
parent 74a53b2735
commit 51c6aaa428
38 changed files with 3717 additions and 24 deletions
@@ -0,0 +1,63 @@
+#ifdef ESP_PLATFORM
+
+#include "PanicHandler.h"
+
+#include <esp_rom_sys.h>
+#include <esp_debug_helpers.h>
+#include <esp_attr.h>
+#include <esp_memory_utils.h>
+#include <esp_cpu_utils.h>
+
+extern "C" {
+
+static RTC_NOINIT_ATTR CrashData crashData;
+
+void __real_esp_panic_handler(void* info);
+
+void __wrap_esp_panic_handler(void* info) {
+
+    esp_backtrace_frame_t frame = {
+        .pc = 0,
+        .sp = 0,
+        .next_pc = 0,
+        .exc_frame = nullptr
+    };
+
+    crashData.callstackLength = 0;
+
+    esp_backtrace_get_start(&frame.pc, &frame.sp, &frame.next_pc);
+    crashData.callstack[0].pc = frame.pc;
+    crashData.callstack[0].sp = frame.sp;
+    crashData.callstackLength++;
+
+    uint32_t max_framecount = (1024 - 1) / sizeof(esp_backtrace_frame_t);
+    crashData.callstackCorrupted = !(esp_stack_ptr_is_sane(frame.sp) &&
+        (esp_ptr_executable((void *)esp_cpu_process_stack_pc(frame.pc)) ||
+        /* Ignore the first corrupted PC in case of InstrFetchProhibited */
+        (frame.exc_frame && ((XtExcFrame *)frame.exc_frame)->exccause == EXCCAUSE_INSTR_PROHIBITED)));
+
+    while (
+        frame.next_pc != 0 &&
+        !crashData.callstackCorrupted
+        && crashData.callstackLength < CRASH_DATA_CALLSTACK_LIMIT
+    ) {
+        if (esp_backtrace_get_next_frame(&frame)) {
+            crashData.callstack[crashData.callstackLength].pc = frame.pc;
+            crashData.callstack[crashData.callstackLength].sp = frame.sp;
+            crashData.callstackLength++;
+        } else {
+            crashData.callstackCorrupted = true;
+            break;
+        }
+    }
+
+    // TODO: Handle corrupted logic
+
+    __real_esp_panic_handler(info);
+}
+
+}
+
+const CrashData* getRtcCrashData() { return &crashData; }
+
+#endif