]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blame - bfd/elf32-sparc.c
* configure.tgt: Whiltespace. Sort moxie entry.
[thirdparty/binutils-gdb.git] / bfd / elf32-sparc.c
CommitLineData
252b5132 1/* SPARC-specific support for 32-bit ELF
f0abc2a1 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
aa820537 3 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
252b5132 4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
ae9a127f
NC
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
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
252b5132 11
ae9a127f
NC
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.
252b5132 16
ae9a127f
NC
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
cd123cb7
NC
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
252b5132 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
252b5132
RH
24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
27#include "elf/sparc.h"
f7775d95 28#include "opcode/sparc.h"
22b75d0a 29#include "elfxx-sparc.h"
910600e9 30#include "elf-vxworks.h"
252b5132 31
22b75d0a 32/* Support for core dump NOTE sections. */
252b5132 33
b34976b6 34static bfd_boolean
22b75d0a 35elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
252b5132 36{
22b75d0a 37 switch (note->descsz)
252b5132 38 {
22b75d0a
DM
39 default:
40 return FALSE;
252b5132 41
22b75d0a
DM
42 case 260: /* Solaris prpsinfo_t. */
43 elf_tdata (abfd)->core_program
44 = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16);
45 elf_tdata (abfd)->core_command
46 = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80);
47 break;
252b5132 48
22b75d0a
DM
49 case 336: /* Solaris psinfo_t. */
50 elf_tdata (abfd)->core_program
51 = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16);
52 elf_tdata (abfd)->core_command
53 = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80);
54 break;
252b5132
RH
55 }
56
b34976b6 57 return TRUE;
252b5132
RH
58}
59
252b5132
RH
60/* Functions for dealing with the e_flags field.
61
62 We don't define set_private_flags or copy_private_bfd_data because
63 the only currently defined values are based on the bfd mach number,
64 so we use the latter instead and defer setting e_flags until the
65 file is written out. */
66
67/* Merge backend specific data from an object file to the output
68 object file when linking. */
69
b34976b6 70static bfd_boolean
22b75d0a 71elf32_sparc_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132 72{
b34976b6 73 bfd_boolean error;
7946e94a 74 unsigned long ibfd_mach;
5f771d47
ILT
75 /* FIXME: This should not be static. */
76 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
252b5132
RH
77
78 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
79 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 80 return TRUE;
252b5132 81
b34976b6 82 error = FALSE;
252b5132 83
7946e94a
JJ
84 ibfd_mach = bfd_get_mach (ibfd);
85 if (bfd_mach_sparc_64bit_p (ibfd_mach))
252b5132 86 {
b34976b6 87 error = TRUE;
252b5132 88 (*_bfd_error_handler)
d003868e 89 (_("%B: compiled for a 64 bit system and target is 32 bit"), ibfd);
252b5132 90 }
37fb6db1
ILT
91 else if ((ibfd->flags & DYNAMIC) == 0)
92 {
7946e94a
JJ
93 if (bfd_get_mach (obfd) < ibfd_mach)
94 bfd_set_arch_mach (obfd, bfd_arch_sparc, ibfd_mach);
37fb6db1 95 }
252b5132
RH
96
97 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
98 != previous_ibfd_e_flags)
5f771d47 99 && previous_ibfd_e_flags != (unsigned long) -1)
252b5132
RH
100 {
101 (*_bfd_error_handler)
d003868e 102 (_("%B: linking little endian files with big endian files"), ibfd);
b34976b6 103 error = TRUE;
252b5132
RH
104 }
105 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
106
107 if (error)
108 {
109 bfd_set_error (bfd_error_bad_value);
b34976b6 110 return FALSE;
252b5132
RH
111 }
112
b34976b6 113 return TRUE;
252b5132 114}
252b5132
RH
115
116/* The final processing done just before writing out the object file.
117 We need to set the e_machine field appropriately. */
118
119static void
22b75d0a
DM
120elf32_sparc_final_write_processing (bfd *abfd,
121 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132
RH
122{
123 switch (bfd_get_mach (abfd))
124 {
125 case bfd_mach_sparc :
fca870e4
AM
126 case bfd_mach_sparc_sparclet :
127 case bfd_mach_sparc_sparclite :
252b5132
RH
128 break; /* nothing to do */
129 case bfd_mach_sparc_v8plus :
130 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
131 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
132 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
133 break;
134 case bfd_mach_sparc_v8plusa :
135 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
136 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
137 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
138 break;
19f7b010
JJ
139 case bfd_mach_sparc_v8plusb :
140 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
141 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
142 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
143 | EF_SPARC_SUN_US3;
144 break;
252b5132 145 case bfd_mach_sparc_sparclite_le :
252b5132
RH
146 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
147 break;
148 default :
149 abort ();
150 break;
151 }
152}
db6751f2
JJ
153
154static enum elf_reloc_type_class
22b75d0a 155elf32_sparc_reloc_type_class (const Elf_Internal_Rela *rela)
db6751f2 156{
f51e552e 157 switch ((int) ELF32_R_TYPE (rela->r_info))
db6751f2
JJ
158 {
159 case R_SPARC_RELATIVE:
160 return reloc_class_relative;
161 case R_SPARC_JMP_SLOT:
162 return reloc_class_plt;
163 case R_SPARC_COPY:
164 return reloc_class_copy;
165 default:
166 return reloc_class_normal;
167 }
168}
4c45e5c9 169
d0c9aeb3
DM
170/* Hook called by the linker routine which adds symbols from an object
171 file. */
172
173static bfd_boolean
174elf32_sparc_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED,
175 struct bfd_link_info * info ATTRIBUTE_UNUSED,
176 Elf_Internal_Sym * sym,
177 const char ** namep ATTRIBUTE_UNUSED,
178 flagword * flagsp ATTRIBUTE_UNUSED,
179 asection ** secp ATTRIBUTE_UNUSED,
180 bfd_vma * valp ATTRIBUTE_UNUSED)
181{
182 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
183 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
184 return TRUE;
185}
186
252b5132
RH
187#define TARGET_BIG_SYM bfd_elf32_sparc_vec
188#define TARGET_BIG_NAME "elf32-sparc"
189#define ELF_ARCH bfd_arch_sparc
190#define ELF_MACHINE_CODE EM_SPARC
191#define ELF_MACHINE_ALT1 EM_SPARC32PLUS
192#define ELF_MAXPAGESIZE 0x10000
24718e3b 193#define ELF_COMMONPAGESIZE 0x2000
252b5132 194
22b75d0a
DM
195#define bfd_elf32_bfd_merge_private_bfd_data \
196 elf32_sparc_merge_private_bfd_data
197#define elf_backend_final_write_processing \
198 elf32_sparc_final_write_processing
199#define elf_backend_grok_psinfo elf32_sparc_grok_psinfo
200#define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
201
202#define elf_info_to_howto _bfd_sparc_elf_info_to_howto
203#define bfd_elf32_bfd_reloc_type_lookup _bfd_sparc_elf_reloc_type_lookup
157090f7
AM
204#define bfd_elf32_bfd_reloc_name_lookup \
205 _bfd_sparc_elf_reloc_name_lookup
b9734f35 206#define bfd_elf32_bfd_link_hash_table_create \
22b75d0a 207 _bfd_sparc_elf_link_hash_table_create
d0c9aeb3
DM
208#define bfd_elf32_bfd_link_hash_table_free \
209 _bfd_sparc_elf_link_hash_table_free
22b75d0a
DM
210#define bfd_elf32_bfd_relax_section _bfd_sparc_elf_relax_section
211#define bfd_elf32_new_section_hook _bfd_sparc_elf_new_section_hook
b9734f35 212#define elf_backend_copy_indirect_symbol \
22b75d0a 213 _bfd_sparc_elf_copy_indirect_symbol
252b5132 214#define elf_backend_create_dynamic_sections \
22b75d0a
DM
215 _bfd_sparc_elf_create_dynamic_sections
216#define elf_backend_check_relocs _bfd_sparc_elf_check_relocs
252b5132 217#define elf_backend_adjust_dynamic_symbol \
22b75d0a
DM
218 _bfd_sparc_elf_adjust_dynamic_symbol
219#define elf_backend_omit_section_dynsym _bfd_sparc_elf_omit_section_dynsym
252b5132 220#define elf_backend_size_dynamic_sections \
22b75d0a
DM
221 _bfd_sparc_elf_size_dynamic_sections
222#define elf_backend_relocate_section _bfd_sparc_elf_relocate_section
252b5132 223#define elf_backend_finish_dynamic_symbol \
22b75d0a 224 _bfd_sparc_elf_finish_dynamic_symbol
252b5132 225#define elf_backend_finish_dynamic_sections \
22b75d0a
DM
226 _bfd_sparc_elf_finish_dynamic_sections
227#define bfd_elf32_mkobject _bfd_sparc_elf_mkobject
228#define elf_backend_object_p _bfd_sparc_elf_object_p
229#define elf_backend_gc_mark_hook _bfd_sparc_elf_gc_mark_hook
230#define elf_backend_gc_sweep_hook _bfd_sparc_elf_gc_sweep_hook
231#define elf_backend_plt_sym_val _bfd_sparc_elf_plt_sym_val
74541ad4 232#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH
233
234#define elf_backend_can_gc_sections 1
b9734f35 235#define elf_backend_can_refcount 1
252b5132
RH
236#define elf_backend_want_got_plt 0
237#define elf_backend_plt_readonly 0
238#define elf_backend_want_plt_sym 1
239#define elf_backend_got_header_size 4
f0fe0e16 240#define elf_backend_rela_normal 1
252b5132 241
d0c9aeb3
DM
242#define elf_backend_post_process_headers _bfd_elf_set_osabi
243#define elf_backend_add_symbol_hook elf32_sparc_add_symbol_hook
244
252b5132 245#include "elf32-target.h"
910600e9
RS
246
247/* A wrapper around _bfd_sparc_elf_link_hash_table_create that identifies
248 the target system as VxWorks. */
249
250static struct bfd_link_hash_table *
251elf32_sparc_vxworks_link_hash_table_create (bfd *abfd)
252{
253 struct bfd_link_hash_table *ret;
254
255 ret = _bfd_sparc_elf_link_hash_table_create (abfd);
256 if (ret)
257 {
258 struct _bfd_sparc_elf_link_hash_table *htab;
259
260 htab = (struct _bfd_sparc_elf_link_hash_table *) ret;
261 htab->is_vxworks = 1;
262 }
263 return ret;
264}
265
266/* A final_write_processing hook that does both the SPARC- and VxWorks-
267 specific handling. */
268
269static void
270elf32_sparc_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
271{
272 elf32_sparc_final_write_processing (abfd, linker);
273 elf_vxworks_final_write_processing (abfd, linker);
274}
275
276#undef TARGET_BIG_SYM
277#define TARGET_BIG_SYM bfd_elf32_sparc_vxworks_vec
278#undef TARGET_BIG_NAME
279#define TARGET_BIG_NAME "elf32-sparc-vxworks"
280
281#undef ELF_MINPAGESIZE
282#define ELF_MINPAGESIZE 0x1000
283
284#undef bfd_elf32_bfd_link_hash_table_create
285#define bfd_elf32_bfd_link_hash_table_create \
286 elf32_sparc_vxworks_link_hash_table_create
287
288#undef elf_backend_want_got_plt
289#define elf_backend_want_got_plt 1
290#undef elf_backend_plt_readonly
291#define elf_backend_plt_readonly 1
292#undef elf_backend_got_header_size
293#define elf_backend_got_header_size 12
294#undef elf_backend_add_symbol_hook
295#define elf_backend_add_symbol_hook \
296 elf_vxworks_add_symbol_hook
297#undef elf_backend_link_output_symbol_hook
298#define elf_backend_link_output_symbol_hook \
299 elf_vxworks_link_output_symbol_hook
300#undef elf_backend_emit_relocs
301#define elf_backend_emit_relocs \
302 elf_vxworks_emit_relocs
303#undef elf_backend_final_write_processing
304#define elf_backend_final_write_processing \
305 elf32_sparc_vxworks_final_write_processing
306
307#undef elf32_bed
308#define elf32_bed sparc_elf_vxworks_bed
309
310#include "elf32-target.h"