bfd/elf32-tilegx.c

   1 /* TILE-Gx-specific support for 32-bit ELF.
   2    Copyright (C) 2011-2020 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #include "sysdep.h"
  22 #include "bfd.h"
  23 #include "libbfd.h"
  24 #include "elf-bfd.h"
  25 #include "elfxx-tilegx.h"
  26 #include "elf32-tilegx.h"
  27
  28
  29 /* Support for core dump NOTE sections.  */
  30
  31 static bfd_boolean
  32 tilegx_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
  33 {
  34   int offset;
  35   size_t size;
  36
  37   if (note->descsz != TILEGX_PRSTATUS_SIZEOF)
  38     return FALSE;
  39
  40   /* pr_cursig */
  41   elf_tdata (abfd)->core->signal =
  42     bfd_get_16 (abfd, note->descdata + TILEGX_PRSTATUS_OFFSET_PR_CURSIG);
  43
  44   /* pr_pid */
  45   elf_tdata (abfd)->core->pid =
  46     bfd_get_32 (abfd, note->descdata + TILEGX_PRSTATUS_OFFSET_PR_PID);
  47
  48   /* pr_reg */
  49   offset = TILEGX_PRSTATUS_OFFSET_PR_REG;
  50   size   = TILEGX_GREGSET_T_SIZE;
  51
  52   /* Make a ".reg/999" section.  */
  53   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
  54                                           size, note->descpos + offset);
  55 }
  56
  57 static bfd_boolean
  58 tilegx_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
  59 {
  60   if (note->descsz != TILEGX_PRPSINFO_SIZEOF)
  61     return FALSE;
  62
  63   elf_tdata (abfd)->core->program
  64     = _bfd_elfcore_strndup (abfd, note->descdata + TILEGX_PRPSINFO_OFFSET_PR_FNAME, 16);
  65   elf_tdata (abfd)->core->command
  66     = _bfd_elfcore_strndup (abfd, note->descdata + TILEGX_PRPSINFO_OFFSET_PR_PSARGS, ELF_PR_PSARGS_SIZE);
  67
  68
  69   /* Note that for some reason, a spurious space is tacked
  70      onto the end of the args in some (at least one anyway)
  71      implementations, so strip it off if it exists.  */
  72   {
  73     char *command = elf_tdata (abfd)->core->command;
  74     int n = strlen (command);
  75
  76     if (0 < n && command[n - 1] == ' ')
  77       command[n - 1] = '\0';
  78   }
  79
  80   return TRUE;
  81 }
  82
  83
  84 #define ELF_ARCH                bfd_arch_tilegx
  85 #define ELF_TARGET_ID           TILEGX_ELF_DATA
  86 #define ELF_MACHINE_CODE        EM_TILEGX
  87 #define ELF_MAXPAGESIZE         0x10000
  88 #define ELF_COMMONPAGESIZE      0x10000
  89
  90 #define TARGET_BIG_SYM          tilegx_elf32_be_vec
  91 #define TARGET_BIG_NAME         "elf32-tilegx-be"
  92 #define TARGET_LITTLE_SYM       tilegx_elf32_le_vec
  93 #define TARGET_LITTLE_NAME      "elf32-tilegx-le"
  94
  95 #define elf_backend_reloc_type_class         tilegx_reloc_type_class
  96
  97 #define bfd_elf32_bfd_reloc_name_lookup      tilegx_reloc_name_lookup
  98 #define bfd_elf32_bfd_link_hash_table_create tilegx_elf_link_hash_table_create
  99 #define bfd_elf32_bfd_reloc_type_lookup      tilegx_reloc_type_lookup
 100 #define bfd_elf32_bfd_merge_private_bfd_data \
 101   _bfd_tilegx_elf_merge_private_bfd_data
 102
 103 #define elf_backend_copy_indirect_symbol     tilegx_elf_copy_indirect_symbol
 104 #define elf_backend_create_dynamic_sections  tilegx_elf_create_dynamic_sections
 105 #define elf_backend_check_relocs             tilegx_elf_check_relocs
 106 #define elf_backend_adjust_dynamic_symbol    tilegx_elf_adjust_dynamic_symbol
 107 #define elf_backend_omit_section_dynsym      tilegx_elf_omit_section_dynsym
 108 #define elf_backend_size_dynamic_sections    tilegx_elf_size_dynamic_sections
 109 #define elf_backend_relocate_section         tilegx_elf_relocate_section
 110 #define elf_backend_finish_dynamic_symbol    tilegx_elf_finish_dynamic_symbol
 111 #define elf_backend_finish_dynamic_sections  tilegx_elf_finish_dynamic_sections
 112 #define elf_backend_gc_mark_hook             tilegx_elf_gc_mark_hook
 113 #define elf_backend_plt_sym_val              tilegx_elf_plt_sym_val
 114 #define elf_info_to_howto_rel                NULL
 115 #define elf_info_to_howto                    tilegx_info_to_howto_rela
 116 #define elf_backend_grok_prstatus            tilegx_elf_grok_prstatus
 117 #define elf_backend_grok_psinfo              tilegx_elf_grok_psinfo
 118 #define elf_backend_additional_program_headers tilegx_additional_program_headers
 119
 120 #define elf_backend_init_index_section  _bfd_elf_init_1_index_section
 121
 122 #define elf_backend_can_gc_sections 1
 123 #define elf_backend_can_refcount 1
 124 #define elf_backend_want_got_plt 1
 125 #define elf_backend_plt_readonly 1
 126 /* Align PLT mod 64 byte L2 line size. */
 127 #define elf_backend_plt_alignment 6
 128 #define elf_backend_want_plt_sym 1
 129 #define elf_backend_got_header_size 4
 130 #define elf_backend_want_dynrelro 1
 131 #define elf_backend_rela_normal 1
 132 #define elf_backend_default_execstack 0
 133
 134 #include "elf32-target.h"