1 files changed, 24 insertions, 0 deletions
diff --git a/libgloss/m68k/atari/atari-sbrk.c b/libgloss/m68k/atari/atari-sbrk.c
new file mode 100644
index 0000000..8839cc7
--- /dev/null
+++ b/libgloss/m68k/atari/atari-sbrk.c
@@ -0,0 +1,24 @@
+/*
+	Copyright (C) 2025 Mikael Hildenborg
+	SPDX-License-Identifier: BSD-2-Clause
+*/
+
+#include <errno.h>
+#include <_ansi.h>
+
+extern char *_HeapPtr;
+extern char *_HeapBottom;
+extern char *_HeapTop;
+
+char *sbrk(int nbytes)
+{
+	char *newheap = _HeapPtr + nbytes;
+	if (newheap > _HeapTop)
+	{
+		errno = ENOMEM;
+		return ((char *)-1);
+	}
+	char *retptr = _HeapPtr;
+	_HeapPtr = newheap;
+	return retptr;
+}