sysdeps/unix/sysv/linux/x86/tst-cet-property-dep-2.S

   1 /* Test CET property note parser.
   2    Copyright (C) 2018-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <cet.h>
  20
  21         .text
  22         .p2align 4,,15
  23         .globl  bar
  24         .type   bar, @function
  25 /* Since this function doesn't start with ENDBR, it should lead to the
  26    IBT violation when called indirectly.  */
  27 bar:
  28         .cfi_startproc
  29         ret
  30         .cfi_endproc
  31         .size   bar, .-bar
  32
  33 #if __SIZEOF_PTRDIFF_T__  == 8
  34 # define ALIGN 3
  35 #elif __SIZEOF_PTRDIFF_T__  == 4
  36 # define ALIGN 2
  37 #endif
  38
  39 /* In NT_GNU_PROPERTY_TYPE_0 note, add a GNU_PROPERTY_STACK_SIZE property
  40    before the GNU_PROPERTY_X86_FEATURE_1_AND property.  */
  41         .section ".note.gnu.property", "a"
  42         .p2align ALIGN
  43         .long 1f - 0f           /* name length */
  44         .long 5f - 2f           /* data length */
  45         .long 5                 /* note type */
  46 0:      .asciz "GNU"            /* vendor name */
  47 1:
  48         .p2align ALIGN
  49 2:
  50         .long 1                 /* pr_type.  */
  51         .long 4f - 3f           /* pr_datasz.  */
  52 3:
  53 #if __SIZEOF_PTRDIFF_T__  == 8
  54         .long 0x800
  55         .long 0x800
  56 #else
  57         .long 0x08000800
  58 #endif
  59 4:
  60         .p2align ALIGN
  61 5:
  62
  63         .section        .note.GNU-stack,"",@progbits