vdso_amd64.ldscript

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2021 The FreeBSD Foundation
    5  *
    6  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
    7  * under sponsorship from the FreeBSD Foundation.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 /*
   32  * Linker script for amd64 vdso.
   33  */
   34 
   35 /*
   36  * The OUTPUT_ARCH and TARGET lines are for ld.bfd.
   37  * lld doesn't do much with them, the only thing it does is producing ELF
   38  * or binary based on TARGET.
   39  */
   40 OUTPUT_ARCH(i386:x86-64)
   41 TARGET(elf64-x86-64-freebsd)
   42 
   43 PHDRS
   44 {
   45         text            PT_LOAD         FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
   46         dynamic         PT_DYNAMIC      FLAGS(5);
   47         eh_frame_hdr    PT_GNU_EH_FRAME FLAGS(5);
   48 }
   49 
   50 SECTIONS
   51 {
   52         . = . + SIZEOF_HEADERS;
   53 
   54         .hash           : { *(.hash) }                  :text
   55         .gnu.hash       : { *(.gnu.hash) }              :text
   56         .dynsym         : { *(.dynsym) }                :text
   57         .dynstr         : { *(.dynstr) }                :text
   58         .gnu.version    : { *(.gnu.version) }           :text
   59         .gnu.version_d  : { *(.gnu.version_d) }         :text
   60         .gnu.version_r  : { *(.gnu.version_r) }         :text
   61         .eh_frame_hdr   : { *(.eh_frame_hdr) }          :text   :eh_frame_hdr
   62         .eh_frame       : { KEEP (*(.eh_frame)) }       :text
   63         .dynamic        : { *(.dynamic) }               :text   :dynamic
   64         .rodata         : { *(.rodata*) }               :text
   65         .data : {
   66               *(.got.plt) *(.got)
   67         } :text
   68         /DISCARD/ /* .data */: {
   69               *(.data*)
   70               *(.sdata*)
   71               *(.gnu.linkonce.d.*)
   72               *(.bss*)
   73               *(.dynbss*)
   74               *(.gnu.linkonce.b.*)
   75               *(.ctors)
   76               *(.dtors)
   77               *(.jcr)
   78               *(.init_array)
   79               *(.init)
   80               *(.fini)
   81               *(.debug*)
   82               *(.comment)
   83         }
   84 
   85         . = ALIGN(0x10);
   86         .text           : { *(.text .text*) }           :text   =0x90909090
   87 }
   88 
   89 VERSION
   90 {
   91         FBSD_1.7 {
   92                 global:
   93                         __vdso_sigcode;
   94                 local:
   95                         *;
   96         };
   97 }

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FreeBSD/Linux Kernel Cross Reference sys/conf/vdso_amd64.ldscript

FreeBSD/Linux Kernel Cross Reference
sys/conf/vdso_amd64.ldscript