Retro68/gcc/libgloss/m68k/sim-sbrk.c
2012-03-27 01:51:53 +02:00

31 lines
930 B
C

/*
* sim-sbrk.c -- m68k sbrk support when running under the simulator.
*
* Copyright (c) 1995, 2001 Cygnus Support
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
extern char _end[];
static char *curbrk = _end;
char *
sbrk (incr)
int incr;
{
char *oldbrk = curbrk;
curbrk += incr;
if (brk (curbrk) == -1)
return (char *) -1;
return oldbrk;
}