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/* From libc-5.3.12 */
/*
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <unistd.h>
#include <sys/syscall.h>
#include <errno.h>
#include "sysdep.h"
extern void * __curbrk attribute_hidden;
extern int __init_brk (void) attribute_hidden;
libc_hidden_proto(sbrk)
void *
sbrk(intptr_t increment)
{
if (__init_brk () == 0) {
void * tmp = __curbrk + increment;
/*
* Notice that we don't need to save/restore the GOT
* register since that is not call clobbered by the syscall.
*/
asm ("move.d %1,$r10\n\t"
"movu.w " STR(__NR_brk) ",$r9\n\t"
"break 13\n\t"
"move.d $r10, %0"
: "=r" (__curbrk)
: "g" (tmp)
: "r9", "r10");
if (__curbrk == tmp)
return tmp - increment;
__set_errno(ENOMEM);
return ((void *) -1);
}
return ((void *) -1);
}
libc_hidden_def(sbrk)
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