| /* 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. |
| |
| In addition to the permissions in the GNU Lesser General Public |
| License, the Free Software Foundation gives you unlimited |
| permission to link the compiled version of this file with other |
| programs, and to distribute those programs without any restriction |
| coming from the use of this file. (The GNU Lesser General Public |
| License restrictions do apply in other respects; for example, they |
| cover modification of the file, and distribution when not linked |
| into another program.) |
| |
| Note that people who make modified versions of this file are not |
| obligated to grant this special exception for their modified |
| versions; it is their choice whether to do so. The GNU Lesser |
| General Public License gives permission to release a modified |
| version without this exception; this exception also makes it |
| possible to release a modified version which carries forward this |
| exception. |
| |
| 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 <sysdep.h> |
| |
| /* GCC will emit calls to this routine under -mtp=soft. Linux has an |
| equivalent helper function (which clobbers fewer registers than |
| a normal function call) in a high page of memory; tail call to the |
| helper. */ |
| |
| .hidden __aeabi_read_tp |
| ENTRY (__aeabi_read_tp) |
| #ifdef ARCH_HAS_HARD_TP |
| mrc p15, 0, r0, c13, c0, 3 |
| bx lr |
| #elif defined(__thumb2__) |
| movw r0, #0x0fe0 |
| movt r0, #0xffff |
| bx r0 |
| #else |
| mov r0, #0xffff0fff |
| sub pc, r0, #31 |
| #endif |
| END (__aeabi_read_tp) |
