sysdeps/arm/tst-gnu2-tls2.h

   1 /* Test TLSDESC relocation.  ARM version.
   2    Copyright (C) 2024 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 <config.h>
  20 #include <sys/auxv.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <endian.h>
  24
  25 #ifndef __SOFTFP__
  26
  27 # ifdef HAVE_ARM_PCS_VFP_D32
  28 #  define SAVE_VFP_D32                                  \
  29       asm volatile ("vldr d16,=17" : : : "d16");        \
  30       asm volatile ("vldr d17,=18" : : : "d17");        \
  31       asm volatile ("vldr d18,=19" : : : "d18");        \
  32       asm volatile ("vldr d19,=20" : : : "d19");        \
  33       asm volatile ("vldr d20,=21" : : : "d20");        \
  34       asm volatile ("vldr d21,=22" : : : "d21");        \
  35       asm volatile ("vldr d22,=23" : : : "d22");        \
  36       asm volatile ("vldr d23,=24" : : : "d23");        \
  37       asm volatile ("vldr d24,=25" : : : "d24");        \
  38       asm volatile ("vldr d25,=26" : : : "d25");        \
  39       asm volatile ("vldr d26,=27" : : : "d26");        \
  40       asm volatile ("vldr d27,=28" : : : "d27");        \
  41       asm volatile ("vldr d28,=29" : : : "d28");        \
  42       asm volatile ("vldr d29,=30" : : : "d29");        \
  43       asm volatile ("vldr d30,=31" : : : "d30");        \
  44       asm volatile ("vldr d31,=32" : : : "d31");
  45 # else
  46 #  define SAVE_VFP_D32
  47 # endif
  48
  49 # define INIT_TLSDESC_CALL()                            \
  50   unsigned long hwcap = getauxval (AT_HWCAP)
  51
  52 /* Set each vector register to a value from 1 to 32 before the TLS access,
  53    dump to memory after TLS access, and compare with the expected values.  */
  54
  55 # define BEFORE_TLSDESC_CALL()                          \
  56   if (hwcap & HWCAP_ARM_VFP)                            \
  57     {                                                   \
  58       asm volatile ("vldr  d0,=1" : : : "d0");          \
  59       asm volatile ("vldr  d1,=2" : : : "d1");          \
  60       asm volatile ("vldr  d2,=3" : : : "d1");          \
  61       asm volatile ("vldr  d3,=4" : : : "d3");          \
  62       asm volatile ("vldr  d4,=5" : : : "d4");          \
  63       asm volatile ("vldr  d5,=6" : : : "d5");          \
  64       asm volatile ("vldr  d6,=7" : : : "d6");          \
  65       asm volatile ("vldr  d7,=8" : : : "d7");          \
  66       asm volatile ("vldr  d8,=9" : : : "d8");          \
  67       asm volatile ("vldr  d9,=10" : : : "d9");         \
  68       asm volatile ("vldr d10,=11" : : : "d10");        \
  69       asm volatile ("vldr d11,=12" : : : "d11");        \
  70       asm volatile ("vldr d12,=13" : : : "d12");        \
  71       asm volatile ("vldr d13,=14" : : : "d13");        \
  72       asm volatile ("vldr d14,=15" : : : "d14");        \
  73       asm volatile ("vldr d15,=16" : : : "d15");        \
  74     }                                                   \
  75   if (hwcap & HWCAP_ARM_VFPD32)                         \
  76     {                                                   \
  77       SAVE_VFP_D32                                      \
  78     }
  79
  80 # define VFP_STACK_REQ (16*8)
  81 # if __BYTE_ORDER == __BIG_ENDIAN
  82 #  define DISP 7
  83 # else
  84 #  define DISP 0
  85 # endif
  86
  87 # ifdef HAVE_ARM_PCS_VFP_D32
  88 #  define CHECK_VFP_D32                                                 \
  89       char vfp[VFP_STACK_REQ];                                          \
  90       asm volatile ("vstmia %0, {d16-d31}\n"                            \
  91                     :                                                   \
  92                     : "r" (vfp)                                         \
  93                     : "memory");                                        \
  94                                                                         \
  95       char expected[VFP_STACK_REQ] = { 0 };                             \
  96       for (int i = 0; i < 16; ++i)                                      \
  97         expected[i * 8 + DISP] = i + 17;                                \
  98                                                                         \
  99       if (memcmp (vfp, expected, VFP_STACK_REQ) != 0)                   \
 100         abort ();
 101 # else
 102 #  define CHECK_VFP_D32
 103 # endif
 104
 105 # define AFTER_TLSDESC_CALL()                                           \
 106   if (hwcap & HWCAP_ARM_VFP)                                            \
 107     {                                                                   \
 108       char vfp[VFP_STACK_REQ];                                          \
 109       asm volatile ("vstmia %0, {d0-d15}\n"                             \
 110                     :                                                   \
 111                     : "r" (vfp)                                         \
 112                     : "memory");                                        \
 113                                                                         \
 114       char expected[VFP_STACK_REQ] = { 0 };                             \
 115       for (int i = 0; i < 16; ++i)                                      \
 116         expected[i * 8 + DISP] = i + 1;                                 \
 117                                                                         \
 118       if (memcmp (vfp, expected, VFP_STACK_REQ) != 0)                   \
 119         abort ();                                                       \
 120     }                                                                   \
 121   if (hwcap & HWCAP_ARM_VFPD32)                                         \
 122     {                                                                   \
 123       CHECK_VFP_D32                                                     \
 124     }
 125
 126 #endif /* __SOFTFP__ */
 127
 128 #include_next <tst-gnu2-tls2.h>