esp32, esp32s2: move panic handling code to new component

components/esp_system/system_api.c

@@ -0,0 +1,69 @@
+#include "esp_system.h"
+#include "esp_private/system_internal.h"
+#include "esp_heap_caps.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include "esp_system.h"
+#include "panic_internal.h"
+
+#define SHUTDOWN_HANDLERS_NO 2
+static shutdown_handler_t shutdown_handlers[SHUTDOWN_HANDLERS_NO];
+
+esp_err_t esp_register_shutdown_handler(shutdown_handler_t handler)
+{
+    for (int i = 0; i < SHUTDOWN_HANDLERS_NO; i++) {
+        if (shutdown_handlers[i] == handler) {
+            return ESP_ERR_INVALID_STATE;
+        } else if (shutdown_handlers[i] == NULL) {
+            shutdown_handlers[i] = handler;
+            return ESP_OK;
+        }
+    }
+    return ESP_ERR_NO_MEM;
+}
+
+esp_err_t esp_unregister_shutdown_handler(shutdown_handler_t handler)
+{
+    for (int i = 0; i < SHUTDOWN_HANDLERS_NO; i++) {
+        if (shutdown_handlers[i] == handler) {
+            shutdown_handlers[i] = NULL;
+            return ESP_OK;
+        }
+    }
+    return ESP_ERR_INVALID_STATE;
+}
+
+void IRAM_ATTR esp_restart(void)
+{
+    for (int i = SHUTDOWN_HANDLERS_NO - 1; i >= 0; i--) {
+        if (shutdown_handlers[i]) {
+            shutdown_handlers[i]();
+        }
+    }
+
+    // Disable scheduler on this core.
+    vTaskSuspendAll();
+
+    esp_restart_noos();
+}
+
+uint32_t esp_get_free_heap_size( void )
+{
+    return heap_caps_get_free_size( MALLOC_CAP_DEFAULT );
+}
+
+uint32_t esp_get_minimum_free_heap_size( void )
+{
+    return heap_caps_get_minimum_free_size( MALLOC_CAP_DEFAULT );
+}
+
+const char* esp_get_idf_version(void)
+{
+    return IDF_VER;
+}
+
+void __attribute__((noreturn)) esp_system_abort(const char* details)
+{
+    panic_abort(details);
+}