1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * GNU linker script for the VDSO library. 4* 5 * Copyright (C) 2012 ARM Limited 6 * 7 * Author: Will Deacon <will.deacon@arm.com> 8 * Heavily based on the vDSO linker scripts for other archs. 9 */ 10 11#include <linux/const.h> 12#include <asm/page.h> 13#include <asm/vdso.h> 14 15OUTPUT_FORMAT("elf64-littleaarch64", "elf64-bigaarch64", "elf64-littleaarch64") 16OUTPUT_ARCH(aarch64) 17 18SECTIONS 19{ 20 PROVIDE(_vdso_data = . - PAGE_SIZE); 21 . = VDSO_LBASE + SIZEOF_HEADERS; 22 23 .hash : { *(.hash) } :text 24 .gnu.hash : { *(.gnu.hash) } 25 .dynsym : { *(.dynsym) } 26 .dynstr : { *(.dynstr) } 27 .gnu.version : { *(.gnu.version) } 28 .gnu.version_d : { *(.gnu.version_d) } 29 .gnu.version_r : { *(.gnu.version_r) } 30 31 .note : { *(.note.*) } :text :note 32 33 . = ALIGN(16); 34 35 .text : { *(.text*) } :text =0xd503201f 36 PROVIDE (__etext = .); 37 PROVIDE (_etext = .); 38 PROVIDE (etext = .); 39 40 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr 41 .eh_frame : { KEEP (*(.eh_frame)) } :text 42 43 .dynamic : { *(.dynamic) } :text :dynamic 44 45 .rodata : { *(.rodata*) } :text 46 47 _end = .; 48 PROVIDE(end = .); 49 50 /DISCARD/ : { 51 *(.note.GNU-stack) 52 *(.data .data.* .gnu.linkonce.d.* .sdata*) 53 *(.bss .sbss .dynbss .dynsbss) 54 } 55} 56 57/* 58 * We must supply the ELF program headers explicitly to get just one 59 * PT_LOAD segment, and set the flags explicitly to make segments read-only. 60 */ 61PHDRS 62{ 63 text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */ 64 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ 65 note PT_NOTE FLAGS(4); /* PF_R */ 66 eh_frame_hdr PT_GNU_EH_FRAME; 67} 68 69/* 70 * This controls what symbols we export from the DSO. 71 */ 72VERSION 73{ 74 LINUX_2.6.39 { 75 global: 76 __kernel_rt_sigreturn; 77 __kernel_gettimeofday; 78 __kernel_clock_gettime; 79 __kernel_clock_getres; 80 local: *; 81 }; 82} 83 84/* 85 * Make the sigreturn code visible to the kernel. 86 */ 87VDSO_sigtramp = __kernel_rt_sigreturn; 88