projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 688903eb | 1 | /* Copyright (C) 2005-2018 Free Software Foundation, Inc. |
| 485a9bb9 DJ |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Lesser General Public | |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 8 | ||
| 4962a991 DJ |
9 | In addition to the permissions in the GNU Lesser General Public |
| 10 | License, the Free Software Foundation gives you unlimited | |
| 11 | permission to link the compiled version of this file with other | |
| 12 | programs, and to distribute those programs without any restriction | |
| 13 | coming from the use of this file. (The GNU Lesser General Public | |
| 14 | License restrictions do apply in other respects; for example, they | |
| 15 | cover modification of the file, and distribution when not linked | |
| 16 | into another program.) | |
| 17 | ||
| 18 | Note that people who make modified versions of this file are not | |
| 19 | obligated to grant this special exception for their modified | |
| 20 | versions; it is their choice whether to do so. The GNU Lesser | |
| 21 | General Public License gives permission to release a modified | |
| 22 | version without this exception; this exception also makes it | |
| 23 | possible to release a modified version which carries forward this | |
| 24 | exception. | |
| 25 | ||
| 485a9bb9 DJ |
26 | The GNU C Library is distributed in the hope that it will be useful, |
| 27 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 28 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 29 | Lesser General Public License for more details. | |
| 30 | ||
| 31 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
32 | License along with the GNU C Library. If not, see |
| 33 | <http://www.gnu.org/licenses/>. */ | |
| 485a9bb9 DJ |
34 | |
| 35 | #include <sysdep.h> | |
| 36 | ||
| 485a9bb9 DJ |
37 | /* GCC will emit calls to this routine under -mtp=soft. Linux has an |
| 38 | equivalent helper function (which clobbers fewer registers than | |
| 39 | a normal function call) in a high page of memory; tail call to the | |
| 40 | helper. */ | |
| 41 | ||
| 42 | .hidden __aeabi_read_tp | |
| 43 | ENTRY (__aeabi_read_tp) | |
| 79fd8731 RH |
44 | #ifdef ARCH_HAS_HARD_TP |
| 45 | mrc p15, 0, r0, c13, c0, 3 | |
| 46 | bx lr | |
| 47 | #elif defined(__thumb2__) | |
| 5232b909 RH |
48 | movw r0, #0x0fe0 |
| 49 | movt r0, #0xffff | |
| 50 | bx r0 | |
| 51 | #else | |
| 485a9bb9 DJ |
52 | mov r0, #0xffff0fff |
| 53 | sub pc, r0, #31 | |
| 5232b909 | 54 | #endif |
| 485a9bb9 | 55 | END (__aeabi_read_tp) |