| /* Copyright (C) 2005-2014 Free Software Foundation, Inc. |
| |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public License as |
| published by the Free Software Foundation; either version 2.1 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <tcb-offsets.h> |
| |
| /* Save the PID value. */ |
| #define SAVE_PID \ |
| mrs x2, tpidr_el0; \ |
| sub x2, x2, #PTHREAD_SIZEOF; \ |
| ldr w3, [x2, #PTHREAD_PID_OFFSET]; \ |
| cmp w3, #0; \ |
| mov w0, #0x80000000; \ |
| csneg w0, w0, w3, eq; \ |
| str w0, [x2, #PTHREAD_PID_OFFSET] |
| |
| /* Restore the old PID value in the parent. */ |
| #define RESTORE_PID \ |
| cbz x0, 1f; /* If we are the parent... */ \ |
| str w3, [x2, #PTHREAD_PID_OFFSET]; /* restore the saved PID. */ \ |
| 1: |
| |
| #include "../vfork.S" |
