Commit | Line | Data |
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0eddce27 | 1 | /* Intel 960 specific support for 32-bit ELF |
47b0e7ad | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2005 Free Software Foundation, Inc. |
b2ef150d | 3 | |
47b0e7ad | 4 | This file is part of BFD, the Binary File Descriptor library. |
b2ef150d | 5 | |
47b0e7ad NC |
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 2 of the License, or | |
9 | (at your option) any later version. | |
b2ef150d | 10 | |
47b0e7ad NC |
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. | |
b2ef150d | 15 | |
47b0e7ad NC |
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. */ | |
b2ef150d ILT |
20 | |
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/i960.h" | |
26 | ||
b2ef150d ILT |
27 | #define USE_REL 1 |
28 | ||
29 | #define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup | |
30 | #define elf_info_to_howto elf32_i960_info_to_howto | |
31 | #define elf_info_to_howto_rel elf32_i960_info_to_howto_rel | |
32 | ||
47b0e7ad NC |
33 | /* ELF relocs are against symbols. If we are producing relocatable |
34 | output, and the reloc is against an external symbol, and nothing | |
35 | has given us any additional addend, the resulting reloc will also | |
36 | be against the same symbol. In such a case, we don't want to | |
37 | change anything about the way the reloc is handled, since it will | |
38 | all be done at final link time. Rather than put special case code | |
39 | into bfd_perform_relocation, all the reloc types use this howto | |
40 | function. It just short circuits the reloc if producing | |
41 | relocatable output against an external symbol. */ | |
42 | ||
43 | static bfd_reloc_status_type | |
44 | elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED, | |
45 | arelent *reloc_entry, | |
46 | asymbol *symbol, | |
47 | PTR data ATTRIBUTE_UNUSED, | |
48 | asection *input_section, | |
49 | bfd *output_bfd, | |
50 | char **error_message ATTRIBUTE_UNUSED) | |
51 | { | |
52 | /* HACK: I think this first condition is necessary when producing | |
53 | relocatable output. After the end of HACK, the code is identical | |
54 | to bfd_elf_generic_reloc(). I would _guess_ the first change | |
55 | belongs there rather than here. martindo 1998-10-23. */ | |
56 | if (output_bfd != (bfd *) NULL | |
57 | && reloc_entry->howto->pc_relative | |
58 | && !reloc_entry->howto->pcrel_offset) | |
59 | reloc_entry->addend -= symbol->value; | |
60 | ||
61 | /* This is more dubious. */ | |
62 | else if (output_bfd != (bfd *) NULL | |
63 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
64 | reloc_entry->addend -= symbol->section->output_section->vma; | |
65 | ||
66 | else | |
67 | { | |
68 | /* ...end of HACK. */ | |
69 | if (output_bfd != (bfd *) NULL | |
70 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
71 | && (! reloc_entry->howto->partial_inplace | |
72 | || reloc_entry->addend == 0)) | |
73 | { | |
74 | reloc_entry->address += input_section->output_offset; | |
75 | return bfd_reloc_ok; | |
76 | } | |
77 | } | |
78 | ||
79 | return bfd_reloc_continue; | |
80 | } | |
81 | ||
b2ef150d ILT |
82 | static reloc_howto_type elf_howto_table[]= |
83 | { | |
47b0e7ad NC |
84 | HOWTO (R_960_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
85 | elf32_i960_relocate, "R_960_NONE", TRUE, | |
86 | 0x00000000, 0x00000000, FALSE), | |
5f771d47 | 87 | EMPTY_HOWTO (1), |
b34976b6 | 88 | HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
47b0e7ad NC |
89 | elf32_i960_relocate, "R_960_32", TRUE, |
90 | 0xffffffff, 0xffffffff, FALSE), | |
b34976b6 | 91 | HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed, |
47b0e7ad NC |
92 | elf32_i960_relocate, "R_960_IP24 ", TRUE, |
93 | 0x00ffffff, 0x00ffffff, FALSE), | |
5f771d47 ILT |
94 | EMPTY_HOWTO (4), |
95 | EMPTY_HOWTO (5), | |
96 | EMPTY_HOWTO (6), | |
97 | EMPTY_HOWTO (7) | |
b2ef150d ILT |
98 | }; |
99 | ||
100 | static enum elf_i960_reloc_type | |
101 | elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code) | |
102 | { | |
103 | switch (code) | |
104 | { | |
105 | default: | |
106 | return R_960_NONE; | |
107 | case BFD_RELOC_I960_CALLJ: | |
108 | return R_960_OPTCALL; | |
109 | case BFD_RELOC_32: | |
110 | case BFD_RELOC_CTOR: | |
111 | return R_960_32; | |
112 | case BFD_RELOC_24_PCREL: | |
113 | return R_960_IP24; | |
114 | } | |
115 | } | |
116 | ||
117 | static void | |
47b0e7ad NC |
118 | elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, |
119 | arelent * cache_ptr ATTRIBUTE_UNUSED, | |
120 | Elf_Internal_Rela * dst ATTRIBUTE_UNUSED) | |
b2ef150d ILT |
121 | { |
122 | abort (); | |
123 | } | |
124 | ||
125 | static void | |
47b0e7ad NC |
126 | elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
127 | arelent *cache_ptr, | |
128 | Elf_Internal_Rela *dst) | |
b2ef150d ILT |
129 | { |
130 | enum elf_i960_reloc_type type; | |
131 | ||
132 | type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info); | |
133 | BFD_ASSERT (type < R_960_max); | |
134 | ||
135 | cache_ptr->howto = &elf_howto_table[(int) type]; | |
136 | } | |
137 | ||
b2ef150d | 138 | static reloc_howto_type * |
47b0e7ad NC |
139 | elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
140 | bfd_reloc_code_real_type code) | |
b2ef150d ILT |
141 | { |
142 | return elf_howto_table + elf32_i960_bfd_to_reloc_type (code); | |
143 | } | |
144 | ||
145 | #define TARGET_LITTLE_SYM bfd_elf32_i960_vec | |
146 | #define TARGET_LITTLE_NAME "elf32-i960" | |
147 | #define ELF_ARCH bfd_arch_i960 | |
148 | #define ELF_MACHINE_CODE EM_960 | |
79e5982f | 149 | #define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */ |
b2ef150d ILT |
150 | |
151 | #include "elf32-target.h" |