1  /* Specialized bits of code needed for the offloading tables.
       2     Copyright (C) 2014-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  Under Section 7 of GPL version 3, you are granted additional
      17  permissions described in the GCC Runtime Library Exception, version
      18  3.1, as published by the Free Software Foundation.
      19  
      20  You should have received a copy of the GNU General Public License and
      21  a copy of the GCC Runtime Library Exception along with this program;
      22  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      23  <http://www.gnu.org/licenses/>.  */
      24  
      25  /* Target machine header files require this define. */
      26  #define IN_LIBGCC2
      27  
      28  /* FIXME: Including auto-host is incorrect, but until we have
      29     identified the set of defines that need to go into auto-target.h,
      30     this will have to do.  */
      31  #include "auto-host.h"
      32  #undef caddr_t
      33  #undef pid_t
      34  #undef rlim_t
      35  #undef ssize_t
      36  #undef vfork
      37  #include "tconfig.h"
      38  #include "tsystem.h"
      39  #include "coretypes.h"
      40  #include "tm.h"
      41  #include "libgcc_tm.h"
      42  
      43  #if defined(HAVE_GAS_HIDDEN) && ENABLE_OFFLOADING == 1
      44  
      45  #define OFFLOAD_FUNC_TABLE_SECTION_NAME ".gnu.offload_funcs"
      46  #define OFFLOAD_VAR_TABLE_SECTION_NAME ".gnu.offload_vars"
      47  
      48  #ifdef CRT_BEGIN
      49  
      50  const void *const __offload_func_table[0]
      51    __attribute__ ((__used__, visibility ("hidden"),
      52  		  section (OFFLOAD_FUNC_TABLE_SECTION_NAME))) = { };
      53  const void *const __offload_var_table[0]
      54    __attribute__ ((__used__, visibility ("hidden"),
      55  		  section (OFFLOAD_VAR_TABLE_SECTION_NAME))) = { };
      56  
      57  #elif defined CRT_END
      58  
      59  const void *const __offload_funcs_end[0]
      60    __attribute__ ((__used__, visibility ("hidden"),
      61  		  section (OFFLOAD_FUNC_TABLE_SECTION_NAME))) = { };
      62  const void *const __offload_vars_end[0]
      63    __attribute__ ((__used__, visibility ("hidden"),
      64  		  section (OFFLOAD_VAR_TABLE_SECTION_NAME))) = { };
      65  
      66  #elif defined CRT_TABLE
      67  
      68  extern const void *const __offload_func_table[];
      69  extern const void *const __offload_var_table[];
      70  extern const void *const __offload_funcs_end[];
      71  extern const void *const __offload_vars_end[];
      72  
      73  const void *const __OFFLOAD_TABLE__[]
      74    __attribute__ ((__visibility__ ("hidden"))) =
      75  {
      76    &__offload_func_table, &__offload_funcs_end,
      77    &__offload_var_table, &__offload_vars_end
      78  };
      79  
      80  #else /* ! CRT_BEGIN && ! CRT_END && ! CRT_TABLE  */
      81  #error "One of CRT_BEGIN, CRT_END or CRT_TABLE must be defined."
      82  #endif
      83  
      84  #endif