init project

Signed-off-by: a1012112796 <1012112796@qq.com>

rt-thread/libcpu/arm/common/backtrace.c

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2008-07-29     Bernard      first version from QiuYi implementation
+ */
+
+#include <rtthread.h>
+
+#ifdef __GNUC__
+/*
+-->High Address,Stack Top
+PC<------|
+LR       |
+IP       |
+FP       |
+......   |
+PC <-|   |
+LR   |   |
+IP   |   |
+FP---|-- |
+......   |
+PC       |
+LR       |
+IP       |
+FP---
+-->Low Address,Stack Bottom
+*/
+void rt_hw_backtrace(rt_uint32_t *fp, rt_uint32_t thread_entry)
+{
+    rt_uint32_t i, pc, func_entry;
+
+    pc = *fp;
+    rt_kprintf("[0x%x]\n", pc - 0xC);
+
+    for (i = 0; i < 10; i++)
+    {
+        fp = (rt_uint32_t *) * (fp - 3);
+        pc = *fp ;
+
+        func_entry = pc - 0xC;
+
+        if (func_entry <= 0x30000000) break;
+
+        if (func_entry == thread_entry)
+        {
+            rt_kprintf("EntryPoint:0x%x\n", func_entry);
+
+            break;
+        }
+
+        rt_kprintf("[0x%x]\n", func_entry);
+    }
+}
+#else
+void rt_hw_backtrace(rt_uint32_t *fp, rt_uint32_t thread_entry)
+{
+    /* old compiler implementation */
+}
+#endif