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/*
* 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(brk)
int brk(void * end_data_seg)
{
if (__init_brk () == 0) {
/*
* 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" (end_data_seg)
: "r9", "r10");
if (__curbrk == end_data_seg)
return 0;
__set_errno(ENOMEM);
}
return -1;
}
libc_hidden_def(brk)
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