1 /* Intel 960 specific support for 32-bit ELF
2 Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007
3 Free Software Foundation, Inc.
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
30 #define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup
31 #define bfd_elf32_bfd_reloc_name_lookup \
32 elf32_i960_reloc_name_lookup
33 #define elf_info_to_howto elf32_i960_info_to_howto
34 #define elf_info_to_howto_rel elf32_i960_info_to_howto_rel
36 /* ELF relocs are against symbols. If we are producing relocatable
37 output, and the reloc is against an external symbol, and nothing
38 has given us any additional addend, the resulting reloc will also
39 be against the same symbol. In such a case, we don't want to
40 change anything about the way the reloc is handled, since it will
41 all be done at final link time. Rather than put special case code
42 into bfd_perform_relocation, all the reloc types use this howto
43 function. It just short circuits the reloc if producing
44 relocatable output against an external symbol. */
46 static bfd_reloc_status_type
47 elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED,
50 PTR data ATTRIBUTE_UNUSED,
51 asection *input_section,
53 char **error_message ATTRIBUTE_UNUSED)
55 /* HACK: I think this first condition is necessary when producing
56 relocatable output. After the end of HACK, the code is identical
57 to bfd_elf_generic_reloc(). I would _guess_ the first change
58 belongs there rather than here. martindo 1998-10-23. */
59 if (output_bfd != (bfd *) NULL
60 && reloc_entry->howto->pc_relative
61 && !reloc_entry->howto->pcrel_offset)
62 reloc_entry->addend -= symbol->value;
64 /* This is more dubious. */
65 else if (output_bfd != (bfd *) NULL
66 && (symbol->flags & BSF_SECTION_SYM) != 0)
67 reloc_entry->addend -= symbol->section->output_section->vma;
72 if (output_bfd != (bfd *) NULL
73 && (symbol->flags & BSF_SECTION_SYM) == 0
74 && (! reloc_entry->howto->partial_inplace
75 || reloc_entry->addend == 0))
77 reloc_entry->address += input_section->output_offset;
82 return bfd_reloc_continue;
85 static reloc_howto_type elf_howto_table[]=
87 HOWTO (R_960_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
88 elf32_i960_relocate, "R_960_NONE", TRUE,
89 0x00000000, 0x00000000, FALSE),
91 HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
92 elf32_i960_relocate, "R_960_32", TRUE,
93 0xffffffff, 0xffffffff, FALSE),
94 HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed,
95 elf32_i960_relocate, "R_960_IP24 ", TRUE,
96 0x00ffffff, 0x00ffffff, FALSE),
103 static enum elf_i960_reloc_type
104 elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code)
110 case BFD_RELOC_I960_CALLJ:
111 return R_960_OPTCALL;
115 case BFD_RELOC_24_PCREL:
121 elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
122 arelent * cache_ptr ATTRIBUTE_UNUSED,
123 Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)
129 elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
131 Elf_Internal_Rela *dst)
133 enum elf_i960_reloc_type type;
135 type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info);
136 BFD_ASSERT (type < R_960_max);
138 cache_ptr->howto = &elf_howto_table[(int) type];
141 static reloc_howto_type *
142 elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
143 bfd_reloc_code_real_type code)
145 return elf_howto_table + elf32_i960_bfd_to_reloc_type (code);
148 static reloc_howto_type *
149 elf32_i960_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
154 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
155 if (elf_howto_table[i].name != NULL
156 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
157 return &elf_howto_table[i];
162 #define TARGET_LITTLE_SYM bfd_elf32_i960_vec
163 #define TARGET_LITTLE_NAME "elf32-i960"
164 #define ELF_ARCH bfd_arch_i960
165 #define ELF_MACHINE_CODE EM_960
166 #define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
168 #include "elf32-target.h"