[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a diff in pull request #6235: RISC-V: add C++ support to crt0

[GitBox <gi...@apache.org>]

xiaoxiang781216 commented on code in PR #6235:
URL: https://github.com/apache/incubator-nuttx/pull/6235#discussion_r870438164


##########
arch/risc-v/src/common/crt0.c:
##########
@@ -88,6 +88,71 @@ static void sig_trampoline(void)
   );
 }
 
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/* Linker defined symbols to .ctors and .dtors */
+
+  extern void (*_sctors)(void);
+  extern void (*_ectors)(void);
+  extern void (*_sdtors)(void);
+  extern void (*_edtors)(void);
+
+#if defined(__cplusplus)
+}
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Name: exec_ctors
+ *
+ * Description:
+ *   Call static constructors
+ *
+ ****************************************************************************/
+
+  static void exec_ctors(void)
+  {
+    for (void (**ctor)(void) = &_sctors; ctor != &_ectors; ctor++)
+      {
+        (*ctor)();
+      }
+  }
+
+/****************************************************************************
+ * Name: exec_dtors
+ *
+ * Description:
+ *   Call static destructors
+ *
+ ****************************************************************************/
+
+  static void exec_dtors(void)

Review Comment:
   it is already done by binfmt, please search CONFIG_BINFMT_CONSTRUCTORS.



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