1 /* Intel 960 specific support for 32-bit ELF
2 Copyright (C) 1999-2016 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
29 #define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup
30 #define bfd_elf32_bfd_reloc_name_lookup \
31 elf32_i960_reloc_name_lookup
32 #define elf_info_to_howto elf32_i960_info_to_howto
33 #define elf_info_to_howto_rel elf32_i960_info_to_howto_rel
35 /* ELF relocs are against symbols. If we are producing relocatable
36 output, and the reloc is against an external symbol, and nothing
37 has given us any additional addend, the resulting reloc will also
38 be against the same symbol. In such a case, we don't want to
39 change anything about the way the reloc is handled, since it will
40 all be done at final link time. Rather than put special case code
41 into bfd_perform_relocation, all the reloc types use this howto
42 function. It just short circuits the reloc if producing
43 relocatable output against an external symbol. */
45 static bfd_reloc_status_type
46 elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED,
49 void * data ATTRIBUTE_UNUSED,
50 asection *input_section,
52 char **error_message ATTRIBUTE_UNUSED)
54 /* HACK: I think this first condition is necessary when producing
55 relocatable output. After the end of HACK, the code is identical
56 to bfd_elf_generic_reloc(). I would _guess_ the first change
57 belongs there rather than here. martindo 1998-10-23. */
58 if (output_bfd != (bfd *) NULL
59 && reloc_entry->howto->pc_relative
60 && !reloc_entry->howto->pcrel_offset)
61 reloc_entry->addend -= symbol->value;
63 /* This is more dubious. */
64 else if (output_bfd != (bfd *) NULL
65 && (symbol->flags & BSF_SECTION_SYM) != 0)
66 reloc_entry->addend -= symbol->section->output_section->vma;
71 if (output_bfd != (bfd *) NULL
72 && (symbol->flags & BSF_SECTION_SYM) == 0
73 && (! reloc_entry->howto->partial_inplace
74 || reloc_entry->addend == 0))
76 reloc_entry->address += input_section->output_offset;
81 return bfd_reloc_continue;
84 static reloc_howto_type elf_howto_table[]=
86 HOWTO (R_960_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
87 elf32_i960_relocate, "R_960_NONE", TRUE,
88 0x00000000, 0x00000000, FALSE),
90 HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
91 elf32_i960_relocate, "R_960_32", TRUE,
92 0xffffffff, 0xffffffff, FALSE),
93 HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed,
94 elf32_i960_relocate, "R_960_IP24 ", TRUE,
95 0x00ffffff, 0x00ffffff, FALSE),
102 static enum elf_i960_reloc_type
103 elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code)
109 case BFD_RELOC_I960_CALLJ:
110 return R_960_OPTCALL;
114 case BFD_RELOC_24_PCREL:
120 elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
121 arelent * cache_ptr ATTRIBUTE_UNUSED,
122 Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)
128 elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
130 Elf_Internal_Rela *dst)
132 enum elf_i960_reloc_type type;
134 type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info);
136 /* PR 17521: file: 9609b8d6. */
137 if (type >= R_960_max)
139 _bfd_error_handler (_("%B: invalid i960 reloc number: %d"), abfd, type);
143 cache_ptr->howto = &elf_howto_table[(int) type];
146 static reloc_howto_type *
147 elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
148 bfd_reloc_code_real_type code)
150 return elf_howto_table + elf32_i960_bfd_to_reloc_type (code);
153 static reloc_howto_type *
154 elf32_i960_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
159 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
160 if (elf_howto_table[i].name != NULL
161 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
162 return &elf_howto_table[i];
167 #define TARGET_LITTLE_SYM i960_elf32_vec
168 #define TARGET_LITTLE_NAME "elf32-i960"
169 #define ELF_ARCH bfd_arch_i960
170 #define ELF_MACHINE_CODE EM_960
171 #define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
173 #include "elf32-target.h"