1 /* 2 * Copyright (C) 2015 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 #pragma once 30 31 #if defined(__aarch64__) 32 #define VDSO_CLOCK_GETTIME_SYMBOL "__kernel_clock_gettime" 33 #define VDSO_CLOCK_GETRES_SYMBOL "__kernel_clock_getres" 34 #define VDSO_GETTIMEOFDAY_SYMBOL "__kernel_gettimeofday" 35 #else 36 #define VDSO_CLOCK_GETTIME_SYMBOL "__vdso_clock_gettime" 37 #define VDSO_CLOCK_GETRES_SYMBOL "__vdso_clock_getres" 38 #define VDSO_GETTIMEOFDAY_SYMBOL "__vdso_gettimeofday" 39 #endif 40 #if defined(__riscv) 41 #define VDSO_RISCV_HWPROBE_SYMBOL "__vdso_riscv_hwprobe" 42 #endif 43 #if defined(__i386__) || defined(__x86_64__) 44 #define VDSO_TIME_SYMBOL "__vdso_time" 45 #endif 46 47 struct vdso_entry { 48 const char* name; 49 void* fn; 50 }; 51 52 enum { 53 VDSO_CLOCK_GETTIME = 0, 54 VDSO_CLOCK_GETRES, 55 VDSO_GETTIMEOFDAY, 56 #if defined(VDSO_TIME_SYMBOL) 57 VDSO_TIME, 58 #endif 59 #if defined(VDSO_RISCV_HWPROBE_SYMBOL) 60 VDSO_RISCV_HWPROBE, 61 #endif 62 VDSO_END 63 }; 64