| /****************************************************************************** |
| * Copyright (c) 2004, 2008 IBM Corporation |
| * All rights reserved. |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *****************************************************************************/ |
| |
| #include <unistd.h> |
| |
| #define HEAP_SIZE 0x200000 |
| |
| |
| static char heap[HEAP_SIZE]; |
| static char *actptr; |
| |
| void *sbrk(int increment) |
| { |
| char *oldptr; |
| |
| /* Called for the first time? Then init the actual pointer */ |
| if (!actptr) { |
| actptr = heap; |
| } |
| |
| if (actptr + increment > heap + HEAP_SIZE) { |
| /* Out of memory */ |
| return (void *)-1; |
| } |
| |
| oldptr = actptr; |
| actptr += increment; |
| |
| return oldptr; |
| } |