| Elliott Hughes | 2a0b873 | 2013-10-08 18:50:24 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #ifndef __BIONIC_PRIVATE_GET_TLS_H_ |
| 30 | #define __BIONIC_PRIVATE_GET_TLS_H_ |
| 31 | |
| 32 | #if defined(__arm__) |
| 33 | # define __get_tls() \ |
| 34 | ({ void** __val; \ |
| 35 | __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r"(__val)); \ |
| 36 | __val; }) |
| 37 | #elif defined(__mips__) |
| 38 | # define __get_tls() \ |
| 39 | /* On mips32r1, this goes via a kernel illegal instruction trap that's optimized for v1. */ \ |
| 40 | ({ register void** __val asm("v1"); \ |
| 41 | __asm__(".set push\n" \ |
| 42 | ".set mips32r2\n" \ |
| 43 | "rdhwr %0,$29\n" \ |
| 44 | ".set pop\n" : "=r"(__val)); \ |
| 45 | __val; }) |
| 46 | #elif defined(__i386__) |
| 47 | # define __get_tls() \ |
| 48 | ({ void** __val; \ |
| 49 | __asm__("movl %%gs:0, %0" : "=r"(__val)); \ |
| 50 | __val; }) |
| 51 | #elif defined(__x86_64__) |
| 52 | # define __get_tls() \ |
| 53 | ({ void** __val; \ |
| 54 | __asm__("mov %%fs:0, %0" : "=r"(__val)); \ |
| 55 | __val; }) |
| 56 | #else |
| 57 | #error unsupported architecture |
| 58 | #endif |
| 59 | |
| 60 | #endif /* __BIONIC_PRIVATE_GET_TLS_H_ */ |