projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| e61abf83 | 1 | /* Operating system support for run-time dynamic linker. Linux/PPC version. |
| c7693af7 UD |
2 | Copyright (C) 1997, 1998, 2001, 2003, 2006, 2007 |
| 3 | Free Software Foundation, Inc. | |
| e61abf83 UD |
4 | This file is part of the GNU C Library. |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| e61abf83 UD |
10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 14 | Lesser General Public License for more details. |
| e61abf83 | 15 | |
| 41bdb6e2 AJ |
16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, write to the Free | |
| 18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 19 | 02111-1307 USA. */ | |
| e61abf83 | 20 | |
| 6ddd37a4 RM |
21 | #include <config.h> |
| 22 | #include <kernel-features.h> | |
| b8a5737a GK |
23 | #include <ldsodefs.h> |
| 24 | ||
| c7693af7 | 25 | int __cache_line_size attribute_hidden; |
| b8a5737a | 26 | |
| b8a5737a GK |
27 | /* Scan the Aux Vector for the "Data Cache Block Size" entry. If found |
| 28 | verify that the static extern __cache_line_size is defined by checking | |
| 124dcac8 | 29 | for not NULL. If it is defined then assign the cache block size |
| b8a5737a | 30 | value to __cache_line_size. */ |
| 124dcac8 RM |
31 | #define DL_PLATFORM_AUXV \ |
| 32 | case AT_DCACHEBSIZE: \ | |
| c7693af7 UD |
33 | __cache_line_size = av->a_un.a_val; \ |
| 34 | break; | |
| 390911be UD |
35 | |
| 36 | #ifndef __ASSUME_STD_AUXV | |
| 37 | ||
| 39e16978 UD |
38 | /* The PowerPC's auxiliary argument block gets aligned to a 16-byte |
| 39 | boundary. This is history and impossible to change compatibly. */ | |
| 40 | ||
| 390911be UD |
41 | #define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \ |
| 42 | do { \ | |
| 43 | char **_tmp; \ | |
| 44 | size_t _test; \ | |
| 45 | (argc) = *(long int *) cookie; \ | |
| 46 | (argv) = (char **) cookie + 1; \ | |
| 47 | (envp) = (argv) + (argc) + 1; \ | |
| 48 | for (_tmp = (envp); *_tmp; ++_tmp) \ | |
| 49 | continue; \ | |
| 50 | /* The following '++' is important! */ \ | |
| 51 | ++_tmp; \ | |
| 52 | \ | |
| 53 | _test = (size_t)_tmp; \ | |
| 54 | _test = (_test + 0xf) & ~0xf; \ | |
| 55 | /* Under some circumstances, MkLinux (up to at least DR3a5) \ | |
| 56 | omits the padding. To work around this, we make a \ | |
| 57 | basic sanity check of the argument vector. Of \ | |
| 58 | course, this means that in future, the argument \ | |
| 59 | vector will have to be laid out to allow for this \ | |
| 60 | test :-(. */ \ | |
| 61 | if (((ElfW(auxv_t) *)_test)->a_type <= 0x10) \ | |
| 62 | _tmp = (char **)_test; \ | |
| 63 | (auxp) = (ElfW(auxv_t) *) _tmp; \ | |
| 39e16978 | 64 | } while (0) |
| 390911be | 65 | #endif |
| 39e16978 | 66 | |
| 638bb1f3 | 67 | #include <sysdeps/unix/sysv/linux/dl-sysdep.c> |