Add an early arm toolchain

This isn't fully functionnal yet

patches/mingw-0001.patch

@@ -0,0 +1,61 @@
+From ca451a7a45d4876065edc6755f8aab8095914b04 Mon Sep 17 00:00:00 2001
+From: Martell Malone <martellmalone@gmail.com>
+Date: Sat, 21 Nov 2015 18:43:46 -0800
+Subject: [PATCH] Handle __CTOR_LIST__ internally within mingw-w64
+
+---
+ mingw-w64-crt/crt/gccmain.c | 19 +++++++++++++------
+ 1 file changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/mingw-w64-crt/crt/gccmain.c b/mingw-w64-crt/crt/gccmain.c
+index fc0e350..ba50691 100644
+--- a/mingw-w64-crt/crt/gccmain.c
++++ b/mingw-w64-crt/crt/gccmain.c
+@@ -9,8 +9,15 @@
+ #include <setjmp.h>
+ 
+ typedef void (*func_ptr) (void);
+-extern func_ptr __CTOR_LIST__[];
+-extern func_ptr __DTOR_LIST__[];
++#define STATIC static
++
++STATIC func_ptr __MINGW_CTOR_LIST__[1]
++  __attribute__ ((__used__, section(".ctors"), aligned(sizeof(func_ptr))))
++  = { (func_ptr) (-1) };
++
++STATIC func_ptr __MINGW_DTOR_LIST__[1]
++  __attribute__((section(".dtors"), aligned(sizeof(func_ptr))))
++  = { (func_ptr) (-1) };
+ 
+ void __do_global_dtors (void);
+ void __do_global_ctors (void);
+@@ -19,7 +26,7 @@ void __main (void);
+ void
+ __do_global_dtors (void)
+ {
+-  static func_ptr *p = __DTOR_LIST__ + 1;
++  static func_ptr *p = __MINGW_DTOR_LIST__ + 1;
+ 
+   while (*p)
+     {
+@@ -31,17 +38,17 @@ __do_global_dtors (void)
+ void
+ __do_global_ctors (void)
+ {
+-  unsigned long nptrs = (unsigned long) (ptrdiff_t) __CTOR_LIST__[0];
++  unsigned long nptrs = (unsigned long) (ptrdiff_t) __MINGW_CTOR_LIST__[0];
+   unsigned long i;
+ 
+   if (nptrs == (unsigned long) -1)
+     {
+-      for (nptrs = 0; __CTOR_LIST__[nptrs + 1] != 0; nptrs++);
++      for (nptrs = 0; __MINGW_CTOR_LIST__[nptrs + 1] != 0; nptrs++);
+     }
+ 
+   for (i = nptrs; i >= 1; i--)
+     {
+-      __CTOR_LIST__[i] ();
++      __MINGW_CTOR_LIST__[i] ();
+     }
+ 
+   atexit (__do_global_dtors);