Initial commit: TXW82x FPV v2.7.0.7-42229 SDK + project sources

csky/csi_kernel/rhino/arch/riscv/cpu_impl.c

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 YunOS Project. All rights reserved.
+ *
+ * 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 <k_api.h>
+#include <k_config.h>
+
+#if (RHINO_CONFIG_STACK_OVF_CHECK_HW != 0)
+void cpu_intrpt_stack_protect(void)
+{
+}
+
+void task_stack_crash_warning(void)
+{
+    printf("****The task stack base has been broken !!!****\n");
+}
+
+void cpu_task_stack_protect(cpu_stack_t *base, size_t size)
+{
+    uint32_t base_addr = (uint32_t)base;
+
+    int num_return = wp_register(base_addr, AWATCH, task_stack_crash_warning);
+    if (num_return == 1) {
+        wp_enable(1);
+    } else if (num_return == 2 || num_return == -1) {
+          wp_unregister(1);
+          int number_tmp = wp_register(base_addr, AWATCH, task_stack_crash_warning);
+          if (number_tmp == 1){
+              wp_enable(1);
+          }
+      }
+}
+#endif