1 /* TILE-Gx-specific support for 32-bit ELF.
2 Copyright (C) 2011-2023 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 bool
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 bool
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"