root/arch/arm/vdso/vdso.lds.S

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Adapted from arm64 version.
   4  *
   5  * GNU linker script for the VDSO library.
   6  *
   7  * Copyright (C) 2012 ARM Limited
   8  *
   9  * Author: Will Deacon <will.deacon@arm.com>
  10  * Heavily based on the vDSO linker scripts for other archs.
  11  */
  12 
  13 #include <linux/const.h>
  14 #include <asm/page.h>
  15 #include <asm/vdso.h>
  16 
  17 OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
  18 OUTPUT_ARCH(arm)
  19 
  20 SECTIONS
  21 {
  22         PROVIDE(_start = .);
  23 
  24         . = 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 
  37         .eh_frame_hdr   : { *(.eh_frame_hdr) }          :text   :eh_frame_hdr
  38         .eh_frame       : { KEEP (*(.eh_frame)) }       :text
  39 
  40         .dynamic        : { *(.dynamic) }               :text   :dynamic
  41 
  42         .rodata         : { *(.rodata*) }               :text
  43 
  44         .text           : { *(.text*) }                 :text   =0xe7f001f2
  45 
  46         .got            : { *(.got) }
  47         .rel.plt        : { *(.rel.plt) }
  48 
  49         /DISCARD/       : {
  50                 *(.note.GNU-stack)
  51                 *(.data .data.* .gnu.linkonce.d.* .sdata*)
  52                 *(.bss .sbss .dynbss .dynsbss)
  53         }
  54 }
  55 
  56 /*
  57  * We must supply the ELF program headers explicitly to get just one
  58  * PT_LOAD segment, and set the flags explicitly to make segments read-only.
  59  */
  60 PHDRS
  61 {
  62         text            PT_LOAD         FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
  63         dynamic         PT_DYNAMIC      FLAGS(4);               /* PF_R */
  64         note            PT_NOTE         FLAGS(4);               /* PF_R */
  65         eh_frame_hdr    PT_GNU_EH_FRAME;
  66 }
  67 
  68 VERSION
  69 {
  70         LINUX_2.6 {
  71         global:
  72                 __vdso_clock_gettime;
  73                 __vdso_gettimeofday;
  74         local: *;
  75         };
  76 }