Backported malloc and realloc from avr-libc 1.8.0 (without test code)

See #857

1 files changed, 58 insertions, 0 deletions

diff --git a/cores/arduino/avr-libc/stdlib_private.h b/cores/arduino/avr-libc/stdlib_private.h
new file mode 100644
index 0000000..65c3427
--- /dev/null
+++ b/cores/arduino/avr-libc/stdlib_private.h
@@ -0,0 +1,58 @@
+/* Copyright (c) 2004, Joerg Wunsch
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+   * Neither the name of the copyright holders nor the names of
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/* $Id: stdlib_private.h 1657 2008-03-24 17:11:08Z arcanum $ */
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <avr/io.h>
+
+#if !defined(__DOXYGEN__)
+
+struct __freelist {
+	size_t sz;
+	struct __freelist *nx;
+};
+
+#endif
+
+extern char *__brkval;		/* first location not yet allocated */
+extern struct __freelist *__flp; /* freelist pointer (head of freelist) */
+extern size_t __malloc_margin;	/* user-changeable before the first malloc() */
+extern char *__malloc_heap_start;
+extern char *__malloc_heap_end;
+
+extern char __heap_start;
+extern char __heap_end;
+
+/* Needed for definition of AVR_STACK_POINTER_REG. */
+#include <avr/io.h>
+
+#define STACK_POINTER() ((char *)AVR_STACK_POINTER_REG)
+