diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
---|---|---|
committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/SLOF/clients/net-snk/libc/sbrk.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/SLOF/clients/net-snk/libc/sbrk.c')
-rw-r--r-- | qemu/roms/SLOF/clients/net-snk/libc/sbrk.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c b/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c new file mode 100644 index 000000000..2ec1b5f12 --- /dev/null +++ b/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c @@ -0,0 +1,39 @@ +/****************************************************************************** + * 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; +} |