| /* |
| * 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) |