/* SPDX-License-Identifier: GPL-2.0 */
#include <asm/vdso.h>
#include <asm/vdso/vsyscall.h>
#include <vdso/datapage.h>

/*
 * Linker script for vDSO.  This is an ELF shared object prelinked to
 * its virtual address, and with only one read-only segment.
 * This script controls its layout.
 */

SECTIONS
{
        /*
         * User/kernel shared data is before the vDSO.  This may be a little
         * uglier than putting it after the vDSO, but it avoids issues with
         * non-allocatable things that dangle past the end of the PT_LOAD
         * segment.
         */

        VDSO_VVAR_SYMS

        vclock_pages = VDSO_VCLOCK_PAGES_START(vdso_u_data);
        pvclock_page = vclock_pages + VDSO_PAGE_PVCLOCK_OFFSET * PAGE_SIZE;
        hvclock_page = vclock_pages + VDSO_PAGE_HVCLOCK_OFFSET * PAGE_SIZE;

        . = SIZEOF_HEADERS;

        .hash           : { *(.hash) }                  :text
        .gnu.hash       : { *(.gnu.hash) }
        .dynsym         : { *(.dynsym) }
        .dynstr         : { *(.dynstr) }
        .gnu.version    : { *(.gnu.version) }
        .gnu.version_d  : { *(.gnu.version_d) }
        .gnu.version_r  : { *(.gnu.version_r) }

        .dynamic        : { *(.dynamic) }               :text   :dynamic

        .rodata         : {
                *(.rodata*)
                *(.data*)
                *(.sdata*)
                *(.got.plt) *(.got)
                *(.gnu.linkonce.d.*)
                *(.bss*)
                *(.dynbss*)
                *(.gnu.linkonce.b.*)
        }                                               :text

        .note.gnu.property : {
                *(.note.gnu.property)
        }                                       :text :note :gnu_property
        .note           : {
                *(.note*)
        }                                       :text :note

        .eh_frame_hdr   : { *(.eh_frame_hdr) }  :text :eh_frame_hdr
        .eh_frame       : {
                KEEP (*(.eh_frame))
                *(.eh_frame.*)
        }                                       :text

        /*
         * Text is well-separated from actual data: there's plenty of
         * stuff that isn't used at runtime in between.
         */

        .text           : {
                *(.text*)
        }                                               :text   =0x90909090,



        .altinstructions        : { *(.altinstructions) }       :text
        .altinstr_replacement   : { *(.altinstr_replacement) }  :text

        __ex_table              : { *(__ex_table) }             :text

        /DISCARD/ : {
                *(.discard)
                *(.discard.*)
                *(__bug_table)
        }
}

/*
 * Very old versions of ld do not recognize this name token; use the constant.
 */
#define PT_GNU_EH_FRAME 0x6474e550
#define PT_GNU_STACK    0x6474e551
#define PT_GNU_PROPERTY 0x6474e553

/*
 * We must supply the ELF program headers explicitly to get just one
 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
*/
#define PF_R    FLAGS(4)
#define PF_RW   FLAGS(6)
#define PF_RX   FLAGS(5)

PHDRS
{
        text            PT_LOAD         PF_RX FILEHDR PHDRS;
        dynamic         PT_DYNAMIC      PF_R;
        note            PT_NOTE         PF_R;
        eh_frame_hdr    PT_GNU_EH_FRAME PF_R;
        gnu_stack       PT_GNU_STACK    PF_RW;
        gnu_property    PT_GNU_PROPERTY PF_R;
}