--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dyncallback/dyncall_thunk_arm32.c	Sat Aug 20 11:39:54 2016 +0200
@@ -0,0 +1,47 @@
+/*
+
+ Package: dyncall
+ Library: dyncallback
+ File: dyncallback/dyncall_thunk_arm32.c
+ Description: Thunk - Implementation for ARM32 (ARM and THUMB mode)
+ License:
+
+   Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>,
+                           Tassilo Philipp <tphilipp@potion-studios.com>
+
+   Permission to use, copy, modify, and distribute this software for any
+   purpose with or without fee is hereby granted, provided that the above
+   copyright notice and this permission notice appear in all copies.
+
+   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+
+/* Since we can mix ARM and THUMB assembly, this works for both modes */
+
+#include "dyncall_thunk.h"
+
+void dcbInitThunk(DCThunk* p, void (*entry)())
+{
+  /*
+    # ARM32 (ARM mode) thunk code:
+    .code 32
+      sub %r12, %r15, #8
+      ldr %r15, [%r15, #-4]
+  */
+
+  /* This code stores a ptr to DCCallback in r12 (equals ptr to thunk,     */
+  /* which is PC (r15) minus 8, as PC points to current instruction+8.     */
+  /* Then it loads the callback 'entry' into PC. The -4 is needed, also bc */
+  /* of the PC pointing ahead.                                             */
+  p->code[0]  = 0xe24fc008UL;  /* sub %r12, %r15, #8 */
+  p->code[1]  = 0xe51ff004UL;  /* ldr %r15, [%r15, #-4] */
+  p->entry = entry;
+}