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author | Timothy Pearson <tpearson@raptorengineering.com> | 2019-05-11 15:12:49 -0500 |
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committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-05-11 15:12:49 -0500 |
commit | 9e80202352dd49bdd9e67b8b906d86f058431505 (patch) | |
tree | 5673c17aad6e3833da8c4ff21b5a11f666ec9fbe /src/roms/SLOF/clients/net-snk/libc/sbrk.c | |
download | hqemu-master.zip hqemu-master.tar.gz |
Diffstat (limited to 'src/roms/SLOF/clients/net-snk/libc/sbrk.c')
-rw-r--r-- | src/roms/SLOF/clients/net-snk/libc/sbrk.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/roms/SLOF/clients/net-snk/libc/sbrk.c b/src/roms/SLOF/clients/net-snk/libc/sbrk.c new file mode 100644 index 0000000..2ec1b5f --- /dev/null +++ b/src/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; +} |