* config/tc-mn10300.c (md_assemble): Subtract operand->shift
[deliverable/binutils-gdb.git] / bfd / elf32-i960.c
CommitLineData
b2ef150d 1/* Intel 860 specific support for 32-bit ELF
7898deda 2 Copyright 1999, 2000 Free Software Foundation, Inc.
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3
4This file is part of BFD, the Binary File Descriptor library.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20#include "bfd.h"
21#include "sysdep.h"
22#include "libbfd.h"
23#include "elf-bfd.h"
24#include "elf/i960.h"
25
26static bfd_reloc_status_type elf32_i960_relocate
27 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
28static reloc_howto_type *elf32_i960_reloc_type_lookup
29 PARAMS ((bfd *, bfd_reloc_code_real_type));
30
31#define USE_REL 1
32
33#define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup
34#define elf_info_to_howto elf32_i960_info_to_howto
35#define elf_info_to_howto_rel elf32_i960_info_to_howto_rel
36
37static reloc_howto_type elf_howto_table[]=
38{
39 HOWTO(R_960_NONE, 0, 0, 0, false, 0, complain_overflow_bitfield,
40 elf32_i960_relocate, "R_960_NONE", true,
41 0x00000000, 0x00000000, false),
5f771d47 42 EMPTY_HOWTO (1),
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43 HOWTO (R_960_32, 0, 2, 32, false, 0, complain_overflow_bitfield,
44 elf32_i960_relocate, "R_960_32", true,
45 0xffffffff, 0xffffffff, false),
46 HOWTO (R_960_IP24, 0, 2, 24, true, 0, complain_overflow_signed,
47 elf32_i960_relocate, "R_960_IP24 ", true,
48 0x00ffffff, 0x00ffffff, false),
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49 EMPTY_HOWTO (4),
50 EMPTY_HOWTO (5),
51 EMPTY_HOWTO (6),
52 EMPTY_HOWTO (7)
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53};
54
55static enum elf_i960_reloc_type
56elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code)
57{
58 switch (code)
59 {
60 default:
61 return R_960_NONE;
62 case BFD_RELOC_I960_CALLJ:
63 return R_960_OPTCALL;
64 case BFD_RELOC_32:
65 case BFD_RELOC_CTOR:
66 return R_960_32;
67 case BFD_RELOC_24_PCREL:
68 return R_960_IP24;
69 }
70}
71
72static void
73elf32_i960_info_to_howto (abfd, cache_ptr, dst)
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74 bfd *abfd ATTRIBUTE_UNUSED;
75 arelent *cache_ptr ATTRIBUTE_UNUSED;
76 Elf32_Internal_Rela *dst ATTRIBUTE_UNUSED;
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77{
78 abort ();
79}
80
81static void
82elf32_i960_info_to_howto_rel (abfd, cache_ptr, dst)
5f771d47 83 bfd *abfd ATTRIBUTE_UNUSED;
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84 arelent *cache_ptr;
85 Elf32_Internal_Rel *dst;
86{
87 enum elf_i960_reloc_type type;
88
89 type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info);
90 BFD_ASSERT (type < R_960_max);
91
92 cache_ptr->howto = &elf_howto_table[(int) type];
93}
94
95/* ELF relocs are against symbols. If we are producing relocateable
96 output, and the reloc is against an external symbol, and nothing
97 has given us any additional addend, the resulting reloc will also
98 be against the same symbol. In such a case, we don't want to
99 change anything about the way the reloc is handled, since it will
100 all be done at final link time. Rather than put special case code
101 into bfd_perform_relocation, all the reloc types use this howto
102 function. It just short circuits the reloc if producing
103 relocateable output against an external symbol. */
104
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105bfd_reloc_status_type
106elf32_i960_relocate (abfd,
107 reloc_entry,
108 symbol,
109 data,
110 input_section,
111 output_bfd,
112 error_message)
5f771d47 113 bfd *abfd ATTRIBUTE_UNUSED;
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114 arelent *reloc_entry;
115 asymbol *symbol;
5f771d47 116 PTR data ATTRIBUTE_UNUSED;
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117 asection *input_section;
118 bfd *output_bfd;
5f771d47 119 char **error_message ATTRIBUTE_UNUSED;
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120{
121 /* HACK: I think this first condition is necessary when producing
122 relocatable output. After the end of HACK, the code is identical
123 to bfd_elf_generic_reloc(). I would _guess_ the first change
124 belongs there rather than here. martindo 1998-10-23. */
125 if (output_bfd != (bfd *) NULL
126 && reloc_entry->howto->pc_relative
127 && !reloc_entry->howto->pcrel_offset)
128 {
129 reloc_entry->addend -= symbol->value;
130 }
6609fa74 131 /* This is more dubious. */
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132 else if (output_bfd != (bfd *) NULL
133 && (symbol->flags & BSF_SECTION_SYM) != 0)
134 {
135 reloc_entry->addend -= symbol->section->output_section->vma;
136 }
137 else
138 {
139 /* end of HACK */
140 if (output_bfd != (bfd *) NULL
141 && (symbol->flags & BSF_SECTION_SYM) == 0
142 && (! reloc_entry->howto->partial_inplace
143 || reloc_entry->addend == 0))
144 {
145 reloc_entry->address += input_section->output_offset;
146 return bfd_reloc_ok;
147 }
148 }
149
150 return bfd_reloc_continue;
151}
152
153static reloc_howto_type *
154elf32_i960_reloc_type_lookup (abfd, code)
5f771d47 155 bfd *abfd ATTRIBUTE_UNUSED;
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156 bfd_reloc_code_real_type code;
157{
158 return elf_howto_table + elf32_i960_bfd_to_reloc_type (code);
159}
160
161#define TARGET_LITTLE_SYM bfd_elf32_i960_vec
162#define TARGET_LITTLE_NAME "elf32-i960"
163#define ELF_ARCH bfd_arch_i960
164#define ELF_MACHINE_CODE EM_960
79e5982f 165#define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
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166
167#include "elf32-target.h"
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