Correct implementation of gcc specific internal functions

The following empty stubs has been replaced by the gcc
flag -fno-threadsafe-static:

  int __cxa_guard_acquire(__guard *);
  void __cxa_guard_release (__guard *);
  void __cxa_guard_abort (__guard *);

The following empty stubs has been moved into their specific
module abi.cpp:

  void __cxa_pure_virtual(void) __attribute ((noreturn));
  void __cxa_deleted_virtual(void) __attribute ((noreturn));

Fix #107

Author: cmaglie

hardware/arduino/sam/cores/arduino/cxxabi-compat.cpp renamed to hardware/arduino/avr/cores/arduino/abi.cpp

@@ -1,5 +1,5 @@
 /*
-  Copyright (c) 2011 Arduino.  All right reserved.
+  Copyright (c) 2014 Arduino.  All right reserved.
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
@@ -8,19 +8,28 @@
 
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-extern "C" void __cxa_pure_virtual(void) ;
+#include <stdlib.h>
 
-/* We compile with nodefaultlibs, so we need to provide an error
- * handler for an empty pure virtual function */
-extern "C" void __cxa_pure_virtual(void) {
-    while(1)
-        ;
+extern "C" void __cxa_pure_virtual(void) __attribute__ ((__noreturn__));
+extern "C" void __cxa_deleted_virtual(void) __attribute__ ((__noreturn__));
+
+void __cxa_pure_virtual(void) {
+  // We might want to write some diagnostics to uart in this case
+  //std::terminate();
+  abort();
+}
+
+void __cxa_deleted_virtual(void) {
+  // We might want to write some diagnostics to uart in this case
+  //std::terminate();
+  abort();
 }
+

hardware/arduino/avr/cores/arduino/new.cpp

@@ -1,7 +1,7 @@
-#include <new.h>
 
-void * operator new(size_t size)
-{
+#include <stdlib.h>
+
+void *operator new(size_t size) {
   return malloc(size);
 }
 
@@ -20,9 +20,3 @@ void operator delete[](void * ptr)
   free(ptr);
 }
 
-int __cxa_guard_acquire(__guard *g) {return !*(char *)(g);};
-void __cxa_guard_release (__guard *g) {*(char *)g = 1;};
-void __cxa_guard_abort (__guard *) {}; 
-
-void __cxa_pure_virtual(void) {};
-

hardware/arduino/avr/cores/arduino/new.h

@@ -12,13 +12,5 @@ void * operator new[](size_t size);
 void operator delete(void * ptr);
 void operator delete[](void * ptr);
 
-__extension__ typedef int __guard __attribute__((mode (__DI__)));
-
-extern "C" int __cxa_guard_acquire(__guard *);
-extern "C" void __cxa_guard_release (__guard *);
-extern "C" void __cxa_guard_abort (__guard *); 
-
-extern "C" void __cxa_pure_virtual(void);
-
 #endif
 

hardware/arduino/avr/platform.txt

@@ -21,7 +21,7 @@ compiler.c.elf.flags=-w -Os -Wl,--gc-sections
 compiler.c.elf.cmd=avr-gcc
 compiler.S.flags=-c -g -x assembler-with-cpp
 compiler.cpp.cmd=avr-g++
-compiler.cpp.flags=-c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD
+compiler.cpp.flags=-c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD
 compiler.ar.cmd=avr-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=avr-objcopy

hardware/arduino/sam/cores/arduino/abi.cpp

@@ -0,0 +1,37 @@
+/*
+  Copyright (c) 2014 Arduino.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include <stdlib.h>
+
+extern "C" void __cxa_pure_virtual(void) __attribute__ ((__noreturn__));
+extern "C" void __cxa_deleted_virtual(void) __attribute__ ((__noreturn__));
+
+void __cxa_pure_virtual(void) {
+  // We might want to write some diagnostics to uart in this case
+  //std::terminate();
+  while (1)
+    ;
+}
+
+void __cxa_deleted_virtual(void) {
+  // We might want to write some diagnostics to uart in this case
+  //std::terminate();
+  while (1)
+    ;
+}
+

hardware/arduino/sam/platform.txt

@@ -13,11 +13,11 @@ version=1.5.8
 compiler.path={runtime.ide.path}/hardware/tools/gcc-arm-none-eabi-4.8.3-2014q1/bin/
 compiler.c.cmd=arm-none-eabi-gcc
 compiler.c.flags=-c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -Dprintf=iprintf
-compiler.c.elf.cmd=arm-none-eabi-g++
+compiler.c.elf.cmd=arm-none-eabi-gcc
 compiler.c.elf.flags=-Os -Wl,--gc-sections
 compiler.S.flags=-c -g -x assembler-with-cpp
 compiler.cpp.cmd=arm-none-eabi-g++
-compiler.cpp.flags=-c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -Dprintf=iprintf
+compiler.cpp.flags=-c -g -Os -w -ffunction-sections -fdata-sections -nostdlib -fno-threadsafe-statics --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -Dprintf=iprintf
 compiler.ar.cmd=arm-none-eabi-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=arm-none-eabi-objcopy