Import of the watch repository from Pebble

src/apps/crash_demo/.gitignore

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+
+# Ignore build generated files
+build

src/apps/crash_demo/appinfo.json

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+{
+  "uuid": "2e0effb8-b141-449d-8c41-0f2bc3cb8e88",
+  "shortName": "Crash Test",
+  "longName": "Crash Test",
+  "companyName": "Pebble",
+  "versionCode": 1,
+  "versionLabel": "1.0",
+  "watchapp": {
+    "watchface": false
+  },
+  "resources": {
+    "media": []
+  },
+  "targetPlatforms": [
+    "aplite",
+    "basalt"
+  ],
+  "sdkVersion": "3"
+}

src/apps/crash_demo/src/crash_demo.c

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <pebble.h>
+
+typedef struct MainWindowData {
+  Window *window;
+  SimpleMenuLayer *menu_layer;
+} MainWindowData;
+
+static MainWindowData s_main_window_data;
+
+static void execute_gibberish_menu_cb(int index, void *context) {
+  int32_t gibberish[] = { 0, 0, 0, 0 };
+  int8_t* gibberish_ptr = (int8_t*) gibberish;
+
+  ((void (*)(void))gibberish_ptr + 1)();
+}
+
+static void write_to_null_menu_cb(int index, void *context) {
+  int* null_ptr = NULL;
+  *null_ptr = 0xdeadbeef;
+}
+
+static void write_to_kernel_menu_cb(int index, void *context) {
+  // The kernel ram is between 0x20000000 to 0x20018000
+  int* kernel_ptr = (int*) 0x20010000;
+  *kernel_ptr = 0xdeadbeef;
+}
+
+static void trigger_applib_assert_cb(int index, void *context) {
+  // A little fragile, I know we have an assert in this function but it may change in the future.
+  layer_set_update_proc(0, 0);
+}
+
+static void trigger_infinite_loop(int index, void *context) {
+  while (true) {
+  }
+}
+
+static void trigger_persist_loop(int index, void *context) {
+  int value = 1;
+  while (true) {
+    persist_write_int(42, value++);
+  }
+}
+
+static void trigger_loop_log_spam(int index, void *context) {
+  while (true) {
+    APP_LOG(APP_LOG_LEVEL_ERROR, "Crash Demo Looping Log Spam! WarbleGarbleWarbleGarbleWarble");
+  }
+}
+
+
+static void accel_data_handler(AccelData *data, uint32_t num_samples) {
+}
+
+static void trigger_to_app_event_flood(int index, void *context) {
+  // Generate a crazy number of events and then busy wait.
+
+  accel_data_service_subscribe(1, accel_data_handler);
+  accel_service_set_sampling_rate(ACCEL_SAMPLING_100HZ);
+
+  while (true) {
+  }
+}
+
+static void trigger_double_free(int index, void *context) {
+  volatile int* storage = malloc(sizeof(int));
+  *storage = 1337;
+  free((void*) storage);
+  free((void*) storage);
+}
+
+static void trigger_stack_overflow(int index, void *context) {
+  volatile int counter = (int) context;
+  if (counter > 300) {
+    return;
+  }
+  ++counter;
+  trigger_stack_overflow(index, (void*) counter);
+}
+
+static void window_load(Window *window) {
+  Layer *window_layer = window_get_root_layer(window);
+  GRect bounds = layer_get_bounds(window_layer);
+
+  static const SimpleMenuItem menu_items[] = {
+    {
+      .title = "Execute gibberish",
+      .callback = execute_gibberish_menu_cb
+    }, {
+      .title = "Write to NULL",
+      .callback = write_to_null_menu_cb
+    }, {
+      .title = "Write to kernel",
+      .callback = write_to_kernel_menu_cb
+    }, {
+      .title = "Trigger applib assert",
+      .callback = trigger_applib_assert_cb
+    }, {
+      .title = "Infinite loop",
+      .callback = trigger_infinite_loop
+    }, {
+      .title = "Loop Log Spam",
+      .callback = trigger_loop_log_spam
+    }, {
+      .title = "To App Event Flood",
+      .callback = trigger_to_app_event_flood
+    }, {
+      .title = "Double Free",
+      .callback = trigger_double_free
+    }, {
+      .title = "Stack Overflow",
+      .callback = trigger_stack_overflow
+    }, {
+      .title = "Persist loop",
+      .callback = trigger_persist_loop
+    }
+  };
+  static const SimpleMenuSection sections[] = {
+    {
+      .items = menu_items,
+      .num_items = ARRAY_LENGTH(menu_items)
+    }
+  };
+
+  s_main_window_data.menu_layer = simple_menu_layer_create(bounds, window, sections, ARRAY_LENGTH(sections), NULL);
+
+  layer_add_child(window_layer, simple_menu_layer_get_layer(s_main_window_data.menu_layer));
+}
+
+static void window_unload(Window *window) {
+  simple_menu_layer_destroy(s_main_window_data.menu_layer);
+}
+
+static void init(void) {
+  Window *window = s_main_window_data.window;
+  window = window_create();
+  window_set_window_handlers(window, (WindowHandlers) {
+    .load = window_load,
+    .unload = window_unload,
+  });
+  const bool animated = true;
+  window_stack_push(window, animated);
+}
+
+static void deinit(void) {
+}
+
+int main(void) {
+  init();
+
+  app_event_loop();
+  deinit();
+}

src/apps/crash_demo/wscript

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+
+#
+# This file is the default set of rules to compile a Pebble project.
+#
+# Feel free to customize this to your needs.
+#
+
+import os.path
+
+top = '.'
+out = 'build'
+
+def options(ctx):
+    ctx.load('pebble_sdk')
+
+def configure(ctx):
+    ctx.load('pebble_sdk')
+
+def build(ctx):
+    ctx.load('pebble_sdk')
+
+    build_worker = os.path.exists('worker_src')
+    binaries = []
+
+    for p in ctx.env.TARGET_PLATFORMS:
+        ctx.set_env(ctx.all_envs[p])
+        ctx.set_group(ctx.env.PLATFORM_NAME)
+        app_elf='{}/pebble-app.elf'.format(ctx.env.BUILD_DIR)
+        ctx.pbl_program(source=ctx.path.ant_glob('src/**/*.c'),
+        target=app_elf)
+
+        if build_worker:
+            worker_elf='{}/pebble-worker.elf'.format(ctx.env.BUILD_DIR)
+            binaries.append({'platform': p, 'app_elf': app_elf, 'worker_elf': worker_elf})
+            ctx.pbl_worker(source=ctx.path.ant_glob('worker_src/**/*.c'),
+            target=worker_elf)
+        else:
+            binaries.append({'platform': p, 'app_elf': app_elf})
+
+    ctx.set_group('bundle')
+    ctx.pbl_bundle(binaries=binaries, js=ctx.path.ant_glob('src/js/**/*.js'))