From 01ab0c1d1ef31fc7f36d518661e4141c0eaf4c5f Mon Sep 17 00:00:00 2001
From: Grissiom <chaos.proton@gmail.com>
Date: Thu, 22 Jan 2015 17:22:01 +0800
Subject: [PATCH] crt_init: fix hardfault in Keil toolchain when there is no
 cpp object

If there is no SHT$$INIT_ARRAY, calling
$Super$$__cpp_initialize__aeabi_() will fault. At least until Keil5.12
the problem still exists. So we have to initialize the C++ runtime our
own.
---
 components/cplusplus/crt_init.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/components/cplusplus/crt_init.c b/components/cplusplus/crt_init.c
index 4c4451a5c3..e345052edd 100644
--- a/components/cplusplus/crt_init.c
+++ b/components/cplusplus/crt_init.c
@@ -51,8 +51,26 @@ int cplusplus_system_init(void)
         (*ctors_func)();
     }
 #elif defined(__CC_ARM)
+# if 1
+    /* If there is no SHT$$INIT_ARRAY, calling
+     * $Super$$__cpp_initialize__aeabi_() will fault. At least until Keil5.12
+     * the problem still exists. So we have to initialize the C++ runtime our
+     * own. */
+    typedef void PROC();
+    extern const unsigned long SHT$$INIT_ARRAY$$Base[];
+    extern const unsigned long SHT$$INIT_ARRAY$$Limit[];
+    const unsigned long *base = SHT$$INIT_ARRAY$$Base;
+    const unsigned long *lim  = SHT$$INIT_ARRAY$$Limit;
+
+    for (; base != lim; base++)
+    {
+        PROC *proc = (PROC*)((const char*)base + *base);
+        (*proc)();
+    }
+# else
     /* call armcc lib to initialize cplusplus */
 	$Super$$__cpp_initialize__aeabi_();
+# endif
 #endif
 
     return 0;