1 /* ARC-specific support for 32-bit ELF
2 Copyright (C) 1994 Free Software Foundation, Inc.
3 Contributed by Doug Evans (dje@cygnus.com).
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 static bfd_reloc_status_type arc_elf_unsupported_reloc
27 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
28 static const struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup
29 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
30 static void arc_info_to_howto
31 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
41 static reloc_howto_type elf_arc_howto_table[] =
43 /* This reloc does nothing. */
44 HOWTO (R_ARC_NONE, /* type */
46 2, /* size (0 = byte, 1 = short, 2 = long) */
48 false, /* pc_relative */
50 complain_overflow_bitfield, /* complain_on_overflow */
51 bfd_elf_generic_reloc, /* special_function */
52 "R_ARC_NONE", /* name */
53 false, /* partial_inplace */
56 false), /* pcrel_offset */
58 /* A standard 32 bit relocation. */
59 HOWTO (R_ARC_ADDR32, /* type */
61 2, /* size (0 = byte, 1 = short, 2 = long) */
63 false, /* pc_relative */
65 complain_overflow_bitfield, /* complain_on_overflow */
66 bfd_elf_generic_reloc, /* special_function */
67 "R_ARC_ADDR32", /* name */
68 false, /* partial_inplace */
70 0xffffffff, /* dst_mask */
71 false), /* pcrel_offset */
73 /* A relative 22 bit branch; the lower two bits must be zero. */
74 HOWTO (R_ARC_B22_PCREL, /* type */
76 2, /* size (0 = byte, 1 = short, 2 = long) */
78 true, /* pc_relative */
80 complain_overflow_signed, /* complain_on_overflow */
81 bfd_elf_generic_reloc, /* special_function */
82 "R_ARC_B22_PCREL", /* name */
83 false, /* partial_inplace */
85 0x07ffff80, /* dst_mask */
86 true), /* pcrel_offset */
90 /* Don't pretend we can deal with unsupported relocs. */
92 static bfd_reloc_status_type
93 arc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
94 output_bfd, error_message)
99 asection *input_section;
101 char **error_message;
106 /* Map BFD reloc types to PowerPC ELF reloc types. */
110 unsigned char bfd_reloc_val;
111 unsigned char elf_reloc_val;
114 static const struct arc_reloc_map arc_reloc_map[] =
116 { BFD_RELOC_NONE, R_ARC_NONE, },
117 { BFD_RELOC_32, R_ARC_ADDR32 },
118 { BFD_RELOC_CTOR, R_ARC_ADDR32 },
119 { BFD_RELOC_ARC_B22_PCREL, R_ARC_B22_PCREL },
122 static const struct reloc_howto_struct *
123 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
125 bfd_reloc_code_real_type code;
130 i < sizeof (arc_reloc_map) / sizeof (struct arc_reloc_map);
133 if (arc_reloc_map[i].bfd_reloc_val == code)
134 return &elf_arc_howto_table[arc_reloc_map[i].elf_reloc_val];
140 /* Set the howto pointer for an ARC ELF reloc. */
143 arc_info_to_howto (abfd, cache_ptr, dst)
146 Elf32_Internal_Rela *dst;
148 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_ARC_max);
149 cache_ptr->howto = &elf_arc_howto_table[ELF32_R_TYPE (dst->r_info)];
152 #define TARGET_BIG_SYM bfd_elf32_arc_vec
153 #define TARGET_BIG_NAME "elf32-arc"
154 #define ELF_ARCH bfd_arch_arc
155 #define ELF_MACHINE_CODE EM_CYGNUS_ARC
156 #define ELF_MAXPAGESIZE 0x10000
157 #define elf_info_to_howto arc_info_to_howto
159 #include "elf32-target.h"