1 /* TILE-Gx-specific support for 64-bit ELF.
2    Copyright (C) 2011-2021 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 "elf64-tilegx.h"
27 
28 
29 /* Support for core dump NOTE sections.  */
30 
31 static bool
tilegx_elf_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)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
tilegx_elf_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)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 
91 #define TARGET_BIG_SYM		tilegx_elf64_be_vec
92 #define TARGET_BIG_NAME		"elf64-tilegx-be"
93 #define TARGET_LITTLE_SYM	tilegx_elf64_le_vec
94 #define TARGET_LITTLE_NAME	"elf64-tilegx-le"
95 
96 #define elf_backend_reloc_type_class	     tilegx_reloc_type_class
97 
98 #define bfd_elf64_bfd_reloc_name_lookup	     tilegx_reloc_name_lookup
99 #define bfd_elf64_bfd_link_hash_table_create tilegx_elf_link_hash_table_create
100 #define bfd_elf64_bfd_reloc_type_lookup	     tilegx_reloc_type_lookup
101 #define bfd_elf64_bfd_merge_private_bfd_data \
102   _bfd_tilegx_elf_merge_private_bfd_data
103 
104 #define elf_backend_copy_indirect_symbol     tilegx_elf_copy_indirect_symbol
105 #define elf_backend_create_dynamic_sections  tilegx_elf_create_dynamic_sections
106 #define elf_backend_check_relocs	     tilegx_elf_check_relocs
107 #define elf_backend_adjust_dynamic_symbol    tilegx_elf_adjust_dynamic_symbol
108 #define elf_backend_omit_section_dynsym	     tilegx_elf_omit_section_dynsym
109 #define elf_backend_size_dynamic_sections    tilegx_elf_size_dynamic_sections
110 #define elf_backend_relocate_section	     tilegx_elf_relocate_section
111 #define elf_backend_finish_dynamic_symbol    tilegx_elf_finish_dynamic_symbol
112 #define elf_backend_finish_dynamic_sections  tilegx_elf_finish_dynamic_sections
113 #define elf_backend_gc_mark_hook	     tilegx_elf_gc_mark_hook
114 #define elf_backend_plt_sym_val		     tilegx_elf_plt_sym_val
115 #define elf_info_to_howto_rel		     NULL
116 #define elf_info_to_howto		     tilegx_info_to_howto_rela
117 #define elf_backend_grok_prstatus	     tilegx_elf_grok_prstatus
118 #define elf_backend_grok_psinfo		     tilegx_elf_grok_psinfo
119 #define elf_backend_additional_program_headers tilegx_additional_program_headers
120 
121 #define elf_backend_init_index_section	_bfd_elf_init_1_index_section
122 
123 #define elf_backend_can_gc_sections 1
124 #define elf_backend_can_refcount 1
125 #define elf_backend_want_got_plt 1
126 #define elf_backend_plt_readonly 1
127 /* Align PLT mod 64 byte L2 line size. */
128 #define elf_backend_plt_alignment 6
129 #define elf_backend_want_plt_sym 1
130 #define elf_backend_got_header_size 8
131 #define elf_backend_want_dynrelro 1
132 #define elf_backend_rela_normal 1
133 #define elf_backend_default_execstack 0
134 
135 #include "elf64-target.h"
136