ports/sysdeps/aarch64/tls-macros.h

   1 /* Copyright (C) 2009-2014 Free Software Foundation, Inc.
   2
   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 License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    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    <http://www.gnu.org/licenses/>.  */
  18
  19 #define TLS_LD(x) TLS_GD(x)
  20
  21 #define TLS_GD(x)                                       \
  22   ({ register unsigned long __result asm ("x0");        \
  23      asm ("adrp %0, :tlsgd:" #x "; "                    \
  24           "add  %0, %0, #:tlsgd_lo12:" #x "; "          \
  25           "bl   __tls_get_addr;"                        \
  26           "nop"                                         \
  27           : "=r" (__result)                             \
  28           :                                             \
  29           : "x1", "x2", "x3", "x4", "x5", "x6",         \
  30             "x7", "x8", "x9", "x10", "x11", "x12",      \
  31             "x13", "x14", "x15", "x16", "x17", "x18",   \
  32             "x30", "memory");                           \
  33      (int *) (__result); })
  34
  35 #define TLS_IE(x)                                       \
  36   ({ register unsigned long __result asm ("x0");        \
  37      register unsigned long __t;                        \
  38      asm ("mrs  %1, tpidr_el0; "                        \
  39           "adrp %0, :gottprel:" #x "; "                 \
  40           "ldr  %0, [%0, #:gottprel_lo12:" #x "]; "     \
  41           "add  %0, %0, %1"                             \
  42           : "=r" (__result), "=r" (__t));               \
  43      (int *) (__result); })
  44
  45 #define TLS_LE(x)                                       \
  46   ({ register unsigned long __result asm ("x0");        \
  47      asm ("mrs  %0, tpidr_el0; "                        \
  48           "add  %0, %0, :tprel_hi12:" #x "; "           \
  49           "add  %0, %0, :tprel_lo12_nc:" #x             \
  50           : "=r" (__result));                           \
  51      (int *) (__result); })