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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;
- 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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