| /* |
| * Copyright (c) 2011 Aeroflex Gaisler |
| * |
| * BSD license: |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <reent.h> |
| #include <sys/lock.h> |
| |
| /* |
| * Register a function to be performed at exit or on shared library unload. |
| */ |
| |
| int |
| atexit (void (*fn) (void)) |
| { |
| register struct _atexit *p; |
| |
| p = _GLOBAL_REENT->_atexit; |
| if (p == NULL) |
| _GLOBAL_REENT->_atexit = p = &_GLOBAL_REENT->_atexit0; |
| if (p->_ind >= _ATEXIT_SIZE) |
| { |
| return -1; |
| } |
| |
| p->_fns[p->_ind++] = fn; |
| return 0; |
| } |