LXR linux/arch/arm64/kernel/vdso32/vdso.lds.S

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Adapted from arm64 version.
   4 *
   5 * GNU linker script for the VDSO library.
   6 * Heavily based on the vDSO linker scripts for other archs.
   7 *
   8 * Copyright (C) 2012-2018 ARM Limited
   9 */
  10
  11#include <linux/const.h>
  12#include <asm/page.h>
  13#include <asm/vdso.h>
  14
  15OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
  16OUTPUT_ARCH(arm)
  17
  18SECTIONS
  19{
  20        PROVIDE_HIDDEN(_vdso_data = . - __VVAR_PAGES * PAGE_SIZE);
  21#ifdef CONFIG_TIME_NS
  22        PROVIDE_HIDDEN(_timens_data = _vdso_data + PAGE_SIZE);
  23#endif
  24        . = VDSO_LBASE + SIZEOF_HEADERS;
  25
  26        .hash           : { *(.hash) }                  :text
  27        .gnu.hash       : { *(.gnu.hash) }
  28        .dynsym         : { *(.dynsym) }
  29        .dynstr         : { *(.dynstr) }
  30        .gnu.version    : { *(.gnu.version) }
  31        .gnu.version_d  : { *(.gnu.version_d) }
  32        .gnu.version_r  : { *(.gnu.version_r) }
  33
  34        .note           : { *(.note.*) }                :text   :note
  35
  36        .dynamic        : { *(.dynamic) }               :text   :dynamic
  37
  38        .rodata         : { *(.rodata*) }               :text
  39
  40        .text           : { *(.text*) }                 :text   =0xe7f001f2
  41
  42        .got            : { *(.got) }
  43        .rel.plt        : { *(.rel.plt) }
  44
  45        /DISCARD/       : {
  46                *(.note.GNU-stack)
  47                *(.data .data.* .gnu.linkonce.d.* .sdata*)
  48                *(.bss .sbss .dynbss .dynsbss)
  49        }
  50}
  51
  52/*
  53 * We must supply the ELF program headers explicitly to get just one
  54 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
  55 */
  56PHDRS
  57{
  58        text            PT_LOAD         FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
  59        dynamic         PT_DYNAMIC      FLAGS(4);               /* PF_R */
  60        note            PT_NOTE         FLAGS(4);               /* PF_R */
  61}
  62
  63VERSION
  64{
  65        LINUX_2.6 {
  66        global:
  67                __vdso_clock_gettime;
  68                __vdso_gettimeofday;
  69                __vdso_clock_getres;
  70                __vdso_clock_gettime64;
  71        local: *;
  72        };
  73}
  74