20100923-V6.1.0-RC2/Demo/RX600_RX62N-RDK_Renesas/RTOSDemo/Renesas-Files/sbrk.c

@@ -0,0 +1,28 @@
+#include <stddef.h>
+#include <stdio.h>
+#define HEAPSIZE	0x400
+signed char *sbrk( size_t size );
+union HEAP_TYPE
+{
+	signed long dummy;
+	signed char heap[HEAPSIZE];
+};
+static union HEAP_TYPE	heap_area;
+
+/* End address allocated by sbrk */
+static signed char		*brk = ( signed char * ) &heap_area;
+signed char *sbrk( size_t size )
+{
+	signed char *p;
+	if( brk + size > heap_area.heap + HEAPSIZE )
+	{
+		p = ( signed char * ) - 1;
+	}
+	else
+	{
+		p = brk;
+		brk += size;
+	}
+
+	return p;
+}