54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
|
|
|
|
Copyright (c) 2005 Red Hat Incorporated.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
The name of Red Hat Incorporated may not be used to endorse
|
|
or promote products derived from this software without specific
|
|
prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
|
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
extern void _set_heaptop(void *ptr);
|
|
|
|
/* Normally these would be in unistd.h but we don't rely on that being
|
|
available during this build. */
|
|
#if defined(__r8c_cpu__) || defined(__m16c_cpu__)
|
|
#define PTRDIFF_T int
|
|
#else
|
|
#define PTRDIFF_T long
|
|
#endif
|
|
|
|
char *
|
|
sbrk(PTRDIFF_T adj)
|
|
{
|
|
extern char end;
|
|
static char *heap = &end;
|
|
char *rv = heap;
|
|
|
|
heap += adj;
|
|
_set_heaptop(heap);
|
|
return rv;
|
|
}
|