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* bfd.c (bfd_archive_filename): New function.
[thirdparty/binutils-gdb.git] / bfd / elf64-sparc.c
1 /* SPARC-specific support for 64-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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 2 of the License, or
10 (at your option) any later version.
11
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.
16
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "opcode/sparc.h"
26
27 /* This is defined if one wants to build upward compatible binaries
28 with the original sparc64-elf toolchain. The support is kept in for
29 now but is turned off by default. dje 970930 */
30 /*#define SPARC64_OLD_RELOCS*/
31
32 #include "elf/sparc.h"
33
34 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
35 #define MINUS_ONE (~ (bfd_vma) 0)
36
37 static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create
38 PARAMS ((bfd *));
39 static bfd_reloc_status_type init_insn_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *,
41 bfd *, bfd_vma *, bfd_vma *));
42 static reloc_howto_type *sparc64_elf_reloc_type_lookup
43 PARAMS ((bfd *, bfd_reloc_code_real_type));
44 static void sparc64_elf_info_to_howto
45 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
46
47 static void sparc64_elf_build_plt
48 PARAMS ((bfd *, unsigned char *, int));
49 static bfd_vma sparc64_elf_plt_entry_offset
50 PARAMS ((bfd_vma));
51 static bfd_vma sparc64_elf_plt_ptr_offset
52 PARAMS ((bfd_vma, bfd_vma));
53
54 static boolean sparc64_elf_check_relocs
55 PARAMS ((bfd *, struct bfd_link_info *, asection *sec,
56 const Elf_Internal_Rela *));
57 static boolean sparc64_elf_adjust_dynamic_symbol
58 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
59 static boolean sparc64_elf_size_dynamic_sections
60 PARAMS ((bfd *, struct bfd_link_info *));
61 static int sparc64_elf_get_symbol_type
62 PARAMS (( Elf_Internal_Sym *, int));
63 static boolean sparc64_elf_add_symbol_hook
64 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
65 const char **, flagword *, asection **, bfd_vma *));
66 static boolean sparc64_elf_output_arch_syms
67 PARAMS ((bfd *, struct bfd_link_info *, PTR,
68 boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *)));
69 static void sparc64_elf_symbol_processing
70 PARAMS ((bfd *, asymbol *));
71
72 static boolean sparc64_elf_copy_private_bfd_data
73 PARAMS ((bfd *, bfd *));
74 static boolean sparc64_elf_merge_private_bfd_data
75 PARAMS ((bfd *, bfd *));
76
77 static const char *sparc64_elf_print_symbol_all
78 PARAMS ((bfd *, PTR, asymbol *));
79 static boolean sparc64_elf_relax_section
80 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
81 static boolean sparc64_elf_relocate_section
82 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
83 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
84 static boolean sparc64_elf_finish_dynamic_symbol
85 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
86 Elf_Internal_Sym *));
87 static boolean sparc64_elf_finish_dynamic_sections
88 PARAMS ((bfd *, struct bfd_link_info *));
89 static boolean sparc64_elf_object_p PARAMS ((bfd *));
90 static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *));
91 static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
92 static boolean sparc64_elf_slurp_one_reloc_table
93 PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean));
94 static boolean sparc64_elf_slurp_reloc_table
95 PARAMS ((bfd *, asection *, asymbol **, boolean));
96 static long sparc64_elf_canonicalize_dynamic_reloc
97 PARAMS ((bfd *, arelent **, asymbol **));
98 static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR));
99 static enum elf_reloc_type_class sparc64_elf_reloc_type_class PARAMS ((int));
100 \f
101 /* The relocation "howto" table. */
102
103 static bfd_reloc_status_type sparc_elf_notsup_reloc
104 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
105 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
106 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
107 static bfd_reloc_status_type sparc_elf_hix22_reloc
108 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
109 static bfd_reloc_status_type sparc_elf_lox10_reloc
110 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
111
112 static reloc_howto_type sparc64_elf_howto_table[] =
113 {
114 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
115 HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
116 HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
117 HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
118 HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
119 HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
120 HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true),
121 HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
122 HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
123 HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
124 HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
125 HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
126 HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
127 HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
128 HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
129 HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
130 HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
131 HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
132 HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
133 HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
134 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
135 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true),
136 HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
137 HOWTO(R_SPARC_UA32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true),
138 #ifndef SPARC64_OLD_RELOCS
139 /* These aren't implemented yet. */
140 HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true),
141 HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
142 HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
143 HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
144 HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
145 HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
146 #endif
147 HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
148 HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
149 HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true),
150 HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true),
151 HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
152 HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
153 HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
154 HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", false,0,0x003fffff,true),
155 HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", false,0,0x000003ff,true),
156 HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", false,0,0x003fffff,true),
157 HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
158 HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
159 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true),
160 HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
161 HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true),
162 HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true),
163 HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true),
164 HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false),
165 HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false),
166 HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false),
167 HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false),
168 HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false),
169 HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false),
170 HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false),
171 HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true),
172 HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true)
173 };
174
175 struct elf_reloc_map {
176 bfd_reloc_code_real_type bfd_reloc_val;
177 unsigned char elf_reloc_val;
178 };
179
180 static const struct elf_reloc_map sparc_reloc_map[] =
181 {
182 { BFD_RELOC_NONE, R_SPARC_NONE, },
183 { BFD_RELOC_16, R_SPARC_16, },
184 { BFD_RELOC_8, R_SPARC_8 },
185 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
186 { BFD_RELOC_CTOR, R_SPARC_64 },
187 { BFD_RELOC_32, R_SPARC_32 },
188 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
189 { BFD_RELOC_HI22, R_SPARC_HI22 },
190 { BFD_RELOC_LO10, R_SPARC_LO10, },
191 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
192 { BFD_RELOC_SPARC22, R_SPARC_22 },
193 { BFD_RELOC_SPARC13, R_SPARC_13 },
194 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
195 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
196 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
197 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
198 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
199 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
200 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
201 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
202 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
203 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
204 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
205 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
206 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
207 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
208 { BFD_RELOC_SPARC_10, R_SPARC_10 },
209 { BFD_RELOC_SPARC_11, R_SPARC_11 },
210 { BFD_RELOC_SPARC_64, R_SPARC_64 },
211 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
212 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
213 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
214 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
215 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
216 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
217 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
218 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
219 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
220 { BFD_RELOC_SPARC_7, R_SPARC_7 },
221 { BFD_RELOC_SPARC_5, R_SPARC_5 },
222 { BFD_RELOC_SPARC_6, R_SPARC_6 },
223 { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 },
224 { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 },
225 { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 },
226 { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 },
227 { BFD_RELOC_SPARC_H44, R_SPARC_H44 },
228 { BFD_RELOC_SPARC_M44, R_SPARC_M44 },
229 { BFD_RELOC_SPARC_L44, R_SPARC_L44 },
230 { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER }
231 };
232
233 static reloc_howto_type *
234 sparc64_elf_reloc_type_lookup (abfd, code)
235 bfd *abfd ATTRIBUTE_UNUSED;
236 bfd_reloc_code_real_type code;
237 {
238 unsigned int i;
239 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
240 {
241 if (sparc_reloc_map[i].bfd_reloc_val == code)
242 return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
243 }
244 return 0;
245 }
246
247 static void
248 sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
249 bfd *abfd ATTRIBUTE_UNUSED;
250 arelent *cache_ptr;
251 Elf64_Internal_Rela *dst;
252 {
253 BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std);
254 cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)];
255 }
256 \f
257 /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
258 section can represent up to two relocs, we must tell the user to allocate
259 more space. */
260
261 static long
262 sparc64_elf_get_reloc_upper_bound (abfd, sec)
263 bfd *abfd ATTRIBUTE_UNUSED;
264 asection *sec;
265 {
266 return (sec->reloc_count * 2 + 1) * sizeof (arelent *);
267 }
268
269 static long
270 sparc64_elf_get_dynamic_reloc_upper_bound (abfd)
271 bfd *abfd;
272 {
273 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2;
274 }
275
276 /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
277 them. We cannot use generic elf routines for this, because R_SPARC_OLO10
278 has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations
279 for the same location, R_SPARC_LO10 and R_SPARC_13. */
280
281 static boolean
282 sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic)
283 bfd *abfd;
284 asection *asect;
285 Elf_Internal_Shdr *rel_hdr;
286 asymbol **symbols;
287 boolean dynamic;
288 {
289 PTR allocated = NULL;
290 bfd_byte *native_relocs;
291 arelent *relent;
292 unsigned int i;
293 int entsize;
294 bfd_size_type count;
295 arelent *relents;
296
297 allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
298 if (allocated == NULL)
299 goto error_return;
300
301 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
302 || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)
303 goto error_return;
304
305 native_relocs = (bfd_byte *) allocated;
306
307 relents = asect->relocation + asect->reloc_count;
308
309 entsize = rel_hdr->sh_entsize;
310 BFD_ASSERT (entsize == sizeof (Elf64_External_Rela));
311
312 count = rel_hdr->sh_size / entsize;
313
314 for (i = 0, relent = relents; i < count;
315 i++, relent++, native_relocs += entsize)
316 {
317 Elf_Internal_Rela rela;
318
319 bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela);
320
321 /* The address of an ELF reloc is section relative for an object
322 file, and absolute for an executable file or shared library.
323 The address of a normal BFD reloc is always section relative,
324 and the address of a dynamic reloc is absolute.. */
325 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
326 relent->address = rela.r_offset;
327 else
328 relent->address = rela.r_offset - asect->vma;
329
330 if (ELF64_R_SYM (rela.r_info) == 0)
331 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
332 else
333 {
334 asymbol **ps, *s;
335
336 ps = symbols + ELF64_R_SYM (rela.r_info) - 1;
337 s = *ps;
338
339 /* Canonicalize ELF section symbols. FIXME: Why? */
340 if ((s->flags & BSF_SECTION_SYM) == 0)
341 relent->sym_ptr_ptr = ps;
342 else
343 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
344 }
345
346 relent->addend = rela.r_addend;
347
348 BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std);
349 if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10)
350 {
351 relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10];
352 relent[1].address = relent->address;
353 relent++;
354 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
355 relent->addend = ELF64_R_TYPE_DATA (rela.r_info);
356 relent->howto = &sparc64_elf_howto_table[R_SPARC_13];
357 }
358 else
359 relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)];
360 }
361
362 asect->reloc_count += relent - relents;
363
364 if (allocated != NULL)
365 free (allocated);
366
367 return true;
368
369 error_return:
370 if (allocated != NULL)
371 free (allocated);
372 return false;
373 }
374
375 /* Read in and swap the external relocs. */
376
377 static boolean
378 sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
379 bfd *abfd;
380 asection *asect;
381 asymbol **symbols;
382 boolean dynamic;
383 {
384 struct bfd_elf_section_data * const d = elf_section_data (asect);
385 Elf_Internal_Shdr *rel_hdr;
386 Elf_Internal_Shdr *rel_hdr2;
387 bfd_size_type amt;
388
389 if (asect->relocation != NULL)
390 return true;
391
392 if (! dynamic)
393 {
394 if ((asect->flags & SEC_RELOC) == 0
395 || asect->reloc_count == 0)
396 return true;
397
398 rel_hdr = &d->rel_hdr;
399 rel_hdr2 = d->rel_hdr2;
400
401 BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
402 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
403 }
404 else
405 {
406 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
407 case because relocations against this section may use the
408 dynamic symbol table, and in that case bfd_section_from_shdr
409 in elf.c does not update the RELOC_COUNT. */
410 if (asect->_raw_size == 0)
411 return true;
412
413 rel_hdr = &d->this_hdr;
414 asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
415 rel_hdr2 = NULL;
416 }
417
418 amt = asect->reloc_count;
419 amt *= 2 * sizeof (arelent);
420 asect->relocation = (arelent *) bfd_alloc (abfd, amt);
421 if (asect->relocation == NULL)
422 return false;
423
424 /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */
425 asect->reloc_count = 0;
426
427 if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols,
428 dynamic))
429 return false;
430
431 if (rel_hdr2
432 && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols,
433 dynamic))
434 return false;
435
436 return true;
437 }
438
439 /* Canonicalize the dynamic relocation entries. Note that we return
440 the dynamic relocations as a single block, although they are
441 actually associated with particular sections; the interface, which
442 was designed for SunOS style shared libraries, expects that there
443 is only one set of dynamic relocs. Any section that was actually
444 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
445 the dynamic symbol table, is considered to be a dynamic reloc
446 section. */
447
448 static long
449 sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms)
450 bfd *abfd;
451 arelent **storage;
452 asymbol **syms;
453 {
454 asection *s;
455 long ret;
456
457 if (elf_dynsymtab (abfd) == 0)
458 {
459 bfd_set_error (bfd_error_invalid_operation);
460 return -1;
461 }
462
463 ret = 0;
464 for (s = abfd->sections; s != NULL; s = s->next)
465 {
466 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
467 && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
468 {
469 arelent *p;
470 long count, i;
471
472 if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, true))
473 return -1;
474 count = s->reloc_count;
475 p = s->relocation;
476 for (i = 0; i < count; i++)
477 *storage++ = p++;
478 ret += count;
479 }
480 }
481
482 *storage = NULL;
483
484 return ret;
485 }
486
487 /* Write out the relocs. */
488
489 static void
490 sparc64_elf_write_relocs (abfd, sec, data)
491 bfd *abfd;
492 asection *sec;
493 PTR data;
494 {
495 boolean *failedp = (boolean *) data;
496 Elf_Internal_Shdr *rela_hdr;
497 Elf64_External_Rela *outbound_relocas, *src_rela;
498 unsigned int idx, count;
499 asymbol *last_sym = 0;
500 int last_sym_idx = 0;
501
502 /* If we have already failed, don't do anything. */
503 if (*failedp)
504 return;
505
506 if ((sec->flags & SEC_RELOC) == 0)
507 return;
508
509 /* The linker backend writes the relocs out itself, and sets the
510 reloc_count field to zero to inhibit writing them here. Also,
511 sometimes the SEC_RELOC flag gets set even when there aren't any
512 relocs. */
513 if (sec->reloc_count == 0)
514 return;
515
516 /* We can combine two relocs that refer to the same address
517 into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the
518 latter is R_SPARC_13 with no associated symbol. */
519 count = 0;
520 for (idx = 0; idx < sec->reloc_count; idx++)
521 {
522 bfd_vma addr;
523
524 ++count;
525
526 addr = sec->orelocation[idx]->address;
527 if (sec->orelocation[idx]->howto->type == R_SPARC_LO10
528 && idx < sec->reloc_count - 1)
529 {
530 arelent *r = sec->orelocation[idx + 1];
531
532 if (r->howto->type == R_SPARC_13
533 && r->address == addr
534 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
535 && (*r->sym_ptr_ptr)->value == 0)
536 ++idx;
537 }
538 }
539
540 rela_hdr = &elf_section_data (sec)->rel_hdr;
541
542 rela_hdr->sh_size = rela_hdr->sh_entsize * count;
543 rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
544 if (rela_hdr->contents == NULL)
545 {
546 *failedp = true;
547 return;
548 }
549
550 /* Figure out whether the relocations are RELA or REL relocations. */
551 if (rela_hdr->sh_type != SHT_RELA)
552 abort ();
553
554 /* orelocation has the data, reloc_count has the count... */
555 outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents;
556 src_rela = outbound_relocas;
557
558 for (idx = 0; idx < sec->reloc_count; idx++)
559 {
560 Elf_Internal_Rela dst_rela;
561 arelent *ptr;
562 asymbol *sym;
563 int n;
564
565 ptr = sec->orelocation[idx];
566
567 /* The address of an ELF reloc is section relative for an object
568 file, and absolute for an executable file or shared library.
569 The address of a BFD reloc is always section relative. */
570 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
571 dst_rela.r_offset = ptr->address;
572 else
573 dst_rela.r_offset = ptr->address + sec->vma;
574
575 sym = *ptr->sym_ptr_ptr;
576 if (sym == last_sym)
577 n = last_sym_idx;
578 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
579 n = STN_UNDEF;
580 else
581 {
582 last_sym = sym;
583 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
584 if (n < 0)
585 {
586 *failedp = true;
587 return;
588 }
589 last_sym_idx = n;
590 }
591
592 if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
593 && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
594 && ! _bfd_elf_validate_reloc (abfd, ptr))
595 {
596 *failedp = true;
597 return;
598 }
599
600 if (ptr->howto->type == R_SPARC_LO10
601 && idx < sec->reloc_count - 1)
602 {
603 arelent *r = sec->orelocation[idx + 1];
604
605 if (r->howto->type == R_SPARC_13
606 && r->address == ptr->address
607 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
608 && (*r->sym_ptr_ptr)->value == 0)
609 {
610 idx++;
611 dst_rela.r_info
612 = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend,
613 R_SPARC_OLO10));
614 }
615 else
616 dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10);
617 }
618 else
619 dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type);
620
621 dst_rela.r_addend = ptr->addend;
622 bfd_elf64_swap_reloca_out (abfd, &dst_rela, src_rela);
623 ++src_rela;
624 }
625 }
626 \f
627 /* Sparc64 ELF linker hash table. */
628
629 struct sparc64_elf_app_reg
630 {
631 unsigned char bind;
632 unsigned short shndx;
633 bfd *abfd;
634 char *name;
635 };
636
637 struct sparc64_elf_link_hash_table
638 {
639 struct elf_link_hash_table root;
640
641 struct sparc64_elf_app_reg app_regs [4];
642 };
643
644 /* Get the Sparc64 ELF linker hash table from a link_info structure. */
645
646 #define sparc64_elf_hash_table(p) \
647 ((struct sparc64_elf_link_hash_table *) ((p)->hash))
648
649 /* Create a Sparc64 ELF linker hash table. */
650
651 static struct bfd_link_hash_table *
652 sparc64_elf_bfd_link_hash_table_create (abfd)
653 bfd *abfd;
654 {
655 struct sparc64_elf_link_hash_table *ret;
656 bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table);
657
658 ret = (struct sparc64_elf_link_hash_table *) bfd_zalloc (abfd, amt);
659 if (ret == (struct sparc64_elf_link_hash_table *) NULL)
660 return NULL;
661
662 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
663 _bfd_elf_link_hash_newfunc))
664 {
665 bfd_release (abfd, ret);
666 return NULL;
667 }
668
669 return &ret->root.root;
670 }
671 \f
672 /* Utility for performing the standard initial work of an instruction
673 relocation.
674 *PRELOCATION will contain the relocated item.
675 *PINSN will contain the instruction from the input stream.
676 If the result is `bfd_reloc_other' the caller can continue with
677 performing the relocation. Otherwise it must stop and return the
678 value to its caller. */
679
680 static bfd_reloc_status_type
681 init_insn_reloc (abfd,
682 reloc_entry,
683 symbol,
684 data,
685 input_section,
686 output_bfd,
687 prelocation,
688 pinsn)
689 bfd *abfd;
690 arelent *reloc_entry;
691 asymbol *symbol;
692 PTR data;
693 asection *input_section;
694 bfd *output_bfd;
695 bfd_vma *prelocation;
696 bfd_vma *pinsn;
697 {
698 bfd_vma relocation;
699 reloc_howto_type *howto = reloc_entry->howto;
700
701 if (output_bfd != (bfd *) NULL
702 && (symbol->flags & BSF_SECTION_SYM) == 0
703 && (! howto->partial_inplace
704 || reloc_entry->addend == 0))
705 {
706 reloc_entry->address += input_section->output_offset;
707 return bfd_reloc_ok;
708 }
709
710 /* This works because partial_inplace == false. */
711 if (output_bfd != NULL)
712 return bfd_reloc_continue;
713
714 if (reloc_entry->address > input_section->_cooked_size)
715 return bfd_reloc_outofrange;
716
717 relocation = (symbol->value
718 + symbol->section->output_section->vma
719 + symbol->section->output_offset);
720 relocation += reloc_entry->addend;
721 if (howto->pc_relative)
722 {
723 relocation -= (input_section->output_section->vma
724 + input_section->output_offset);
725 relocation -= reloc_entry->address;
726 }
727
728 *prelocation = relocation;
729 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
730 return bfd_reloc_other;
731 }
732
733 /* For unsupported relocs. */
734
735 static bfd_reloc_status_type
736 sparc_elf_notsup_reloc (abfd,
737 reloc_entry,
738 symbol,
739 data,
740 input_section,
741 output_bfd,
742 error_message)
743 bfd *abfd ATTRIBUTE_UNUSED;
744 arelent *reloc_entry ATTRIBUTE_UNUSED;
745 asymbol *symbol ATTRIBUTE_UNUSED;
746 PTR data ATTRIBUTE_UNUSED;
747 asection *input_section ATTRIBUTE_UNUSED;
748 bfd *output_bfd ATTRIBUTE_UNUSED;
749 char **error_message ATTRIBUTE_UNUSED;
750 {
751 return bfd_reloc_notsupported;
752 }
753
754 /* Handle the WDISP16 reloc. */
755
756 static bfd_reloc_status_type
757 sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section,
758 output_bfd, error_message)
759 bfd *abfd;
760 arelent *reloc_entry;
761 asymbol *symbol;
762 PTR data;
763 asection *input_section;
764 bfd *output_bfd;
765 char **error_message ATTRIBUTE_UNUSED;
766 {
767 bfd_vma relocation;
768 bfd_vma insn;
769 bfd_reloc_status_type status;
770
771 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
772 input_section, output_bfd, &relocation, &insn);
773 if (status != bfd_reloc_other)
774 return status;
775
776 insn &= ~ (bfd_vma) 0x303fff;
777 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
778 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
779
780 if ((bfd_signed_vma) relocation < - 0x40000
781 || (bfd_signed_vma) relocation > 0x3ffff)
782 return bfd_reloc_overflow;
783 else
784 return bfd_reloc_ok;
785 }
786
787 /* Handle the HIX22 reloc. */
788
789 static bfd_reloc_status_type
790 sparc_elf_hix22_reloc (abfd,
791 reloc_entry,
792 symbol,
793 data,
794 input_section,
795 output_bfd,
796 error_message)
797 bfd *abfd;
798 arelent *reloc_entry;
799 asymbol *symbol;
800 PTR data;
801 asection *input_section;
802 bfd *output_bfd;
803 char **error_message ATTRIBUTE_UNUSED;
804 {
805 bfd_vma relocation;
806 bfd_vma insn;
807 bfd_reloc_status_type status;
808
809 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
810 input_section, output_bfd, &relocation, &insn);
811 if (status != bfd_reloc_other)
812 return status;
813
814 relocation ^= MINUS_ONE;
815 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
816 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
817
818 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
819 return bfd_reloc_overflow;
820 else
821 return bfd_reloc_ok;
822 }
823
824 /* Handle the LOX10 reloc. */
825
826 static bfd_reloc_status_type
827 sparc_elf_lox10_reloc (abfd,
828 reloc_entry,
829 symbol,
830 data,
831 input_section,
832 output_bfd,
833 error_message)
834 bfd *abfd;
835 arelent *reloc_entry;
836 asymbol *symbol;
837 PTR data;
838 asection *input_section;
839 bfd *output_bfd;
840 char **error_message ATTRIBUTE_UNUSED;
841 {
842 bfd_vma relocation;
843 bfd_vma insn;
844 bfd_reloc_status_type status;
845
846 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
847 input_section, output_bfd, &relocation, &insn);
848 if (status != bfd_reloc_other)
849 return status;
850
851 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
852 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
853
854 return bfd_reloc_ok;
855 }
856 \f
857 /* PLT/GOT stuff */
858
859 /* Both the headers and the entries are icache aligned. */
860 #define PLT_ENTRY_SIZE 32
861 #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE)
862 #define LARGE_PLT_THRESHOLD 32768
863 #define GOT_RESERVED_ENTRIES 1
864
865 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
866
867 /* Fill in the .plt section. */
868
869 static void
870 sparc64_elf_build_plt (output_bfd, contents, nentries)
871 bfd *output_bfd;
872 unsigned char *contents;
873 int nentries;
874 {
875 const unsigned int nop = 0x01000000;
876 int i, j;
877
878 /* The first four entries are reserved, and are initially undefined.
879 We fill them with `illtrap 0' to force ld.so to do something. */
880
881 for (i = 0; i < PLT_HEADER_SIZE/4; ++i)
882 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+i*4);
883
884 /* The first 32768 entries are close enough to plt1 to get there via
885 a straight branch. */
886
887 for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i)
888 {
889 unsigned char *entry = contents + i * PLT_ENTRY_SIZE;
890 unsigned int sethi, ba;
891
892 /* sethi (. - plt0), %g1 */
893 sethi = 0x03000000 | (i * PLT_ENTRY_SIZE);
894
895 /* ba,a,pt %xcc, plt1 */
896 ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff);
897
898 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
899 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
900 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
901 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
902 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
903 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
904 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
905 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
906 }
907
908 /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of
909 160: 160 entries and 160 pointers. This is to separate code from data,
910 which is much friendlier on the cache. */
911
912 for (; i < nentries; i += 160)
913 {
914 int block = (i + 160 <= nentries ? 160 : nentries - i);
915 for (j = 0; j < block; ++j)
916 {
917 unsigned char *entry, *ptr;
918 unsigned int ldx;
919
920 entry = contents + i*PLT_ENTRY_SIZE + j*4*6;
921 ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8;
922
923 /* ldx [%o7 + ptr - entry+4], %g1 */
924 ldx = 0xc25be000 | ((ptr - entry+4) & 0x1fff);
925
926 /* mov %o7,%g5
927 call .+8
928 nop
929 ldx [%o7+P],%g1
930 jmpl %o7+%g1,%g1
931 mov %g5,%o7 */
932 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
933 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
934 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
935 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
936 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
937 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
938
939 bfd_put_64 (output_bfd, (bfd_vma) (contents - (entry + 4)), ptr);
940 }
941 }
942 }
943
944 /* Return the offset of a particular plt entry within the .plt section. */
945
946 static bfd_vma
947 sparc64_elf_plt_entry_offset (index)
948 bfd_vma index;
949 {
950 bfd_vma block, ofs;
951
952 if (index < LARGE_PLT_THRESHOLD)
953 return index * PLT_ENTRY_SIZE;
954
955 /* See above for details. */
956
957 block = (index - LARGE_PLT_THRESHOLD) / 160;
958 ofs = (index - LARGE_PLT_THRESHOLD) % 160;
959
960 return (LARGE_PLT_THRESHOLD + block * 160) * PLT_ENTRY_SIZE + ofs * 6 * 4;
961 }
962
963 static bfd_vma
964 sparc64_elf_plt_ptr_offset (index, max)
965 bfd_vma index;
966 bfd_vma max;
967 {
968 bfd_vma block, ofs, last;
969
970 BFD_ASSERT(index >= LARGE_PLT_THRESHOLD);
971
972 /* See above for details. */
973
974 block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) + LARGE_PLT_THRESHOLD;
975 ofs = index - block;
976 if (block + 160 > max)
977 last = (max - LARGE_PLT_THRESHOLD) % 160;
978 else
979 last = 160;
980
981 return (block * PLT_ENTRY_SIZE
982 + last * 6*4
983 + ofs * 8);
984 }
985 \f
986 /* Look through the relocs for a section during the first phase, and
987 allocate space in the global offset table or procedure linkage
988 table. */
989
990 static boolean
991 sparc64_elf_check_relocs (abfd, info, sec, relocs)
992 bfd *abfd;
993 struct bfd_link_info *info;
994 asection *sec;
995 const Elf_Internal_Rela *relocs;
996 {
997 bfd *dynobj;
998 Elf_Internal_Shdr *symtab_hdr;
999 struct elf_link_hash_entry **sym_hashes;
1000 bfd_vma *local_got_offsets;
1001 const Elf_Internal_Rela *rel;
1002 const Elf_Internal_Rela *rel_end;
1003 asection *sgot;
1004 asection *srelgot;
1005 asection *sreloc;
1006
1007 if (info->relocateable || !(sec->flags & SEC_ALLOC))
1008 return true;
1009
1010 dynobj = elf_hash_table (info)->dynobj;
1011 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1012 sym_hashes = elf_sym_hashes (abfd);
1013 local_got_offsets = elf_local_got_offsets (abfd);
1014
1015 sgot = NULL;
1016 srelgot = NULL;
1017 sreloc = NULL;
1018
1019 rel_end = relocs + NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr);
1020 for (rel = relocs; rel < rel_end; rel++)
1021 {
1022 unsigned long r_symndx;
1023 struct elf_link_hash_entry *h;
1024
1025 r_symndx = ELF64_R_SYM (rel->r_info);
1026 if (r_symndx < symtab_hdr->sh_info)
1027 h = NULL;
1028 else
1029 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1030
1031 switch (ELF64_R_TYPE_ID (rel->r_info))
1032 {
1033 case R_SPARC_GOT10:
1034 case R_SPARC_GOT13:
1035 case R_SPARC_GOT22:
1036 /* This symbol requires a global offset table entry. */
1037
1038 if (dynobj == NULL)
1039 {
1040 /* Create the .got section. */
1041 elf_hash_table (info)->dynobj = dynobj = abfd;
1042 if (! _bfd_elf_create_got_section (dynobj, info))
1043 return false;
1044 }
1045
1046 if (sgot == NULL)
1047 {
1048 sgot = bfd_get_section_by_name (dynobj, ".got");
1049 BFD_ASSERT (sgot != NULL);
1050 }
1051
1052 if (srelgot == NULL && (h != NULL || info->shared))
1053 {
1054 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1055 if (srelgot == NULL)
1056 {
1057 srelgot = bfd_make_section (dynobj, ".rela.got");
1058 if (srelgot == NULL
1059 || ! bfd_set_section_flags (dynobj, srelgot,
1060 (SEC_ALLOC
1061 | SEC_LOAD
1062 | SEC_HAS_CONTENTS
1063 | SEC_IN_MEMORY
1064 | SEC_LINKER_CREATED
1065 | SEC_READONLY))
1066 || ! bfd_set_section_alignment (dynobj, srelgot, 3))
1067 return false;
1068 }
1069 }
1070
1071 if (h != NULL)
1072 {
1073 if (h->got.offset != (bfd_vma) -1)
1074 {
1075 /* We have already allocated space in the .got. */
1076 break;
1077 }
1078 h->got.offset = sgot->_raw_size;
1079
1080 /* Make sure this symbol is output as a dynamic symbol. */
1081 if (h->dynindx == -1)
1082 {
1083 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1084 return false;
1085 }
1086
1087 srelgot->_raw_size += sizeof (Elf64_External_Rela);
1088 }
1089 else
1090 {
1091 /* This is a global offset table entry for a local
1092 symbol. */
1093 if (local_got_offsets == NULL)
1094 {
1095 bfd_size_type size;
1096 register unsigned int i;
1097
1098 size = symtab_hdr->sh_info;
1099 size *= sizeof (bfd_vma);
1100 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
1101 if (local_got_offsets == NULL)
1102 return false;
1103 elf_local_got_offsets (abfd) = local_got_offsets;
1104 for (i = 0; i < symtab_hdr->sh_info; i++)
1105 local_got_offsets[i] = (bfd_vma) -1;
1106 }
1107 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
1108 {
1109 /* We have already allocated space in the .got. */
1110 break;
1111 }
1112 local_got_offsets[r_symndx] = sgot->_raw_size;
1113
1114 if (info->shared)
1115 {
1116 /* If we are generating a shared object, we need to
1117 output a R_SPARC_RELATIVE reloc so that the
1118 dynamic linker can adjust this GOT entry. */
1119 srelgot->_raw_size += sizeof (Elf64_External_Rela);
1120 }
1121 }
1122
1123 sgot->_raw_size += 8;
1124
1125 #if 0
1126 /* Doesn't work for 64-bit -fPIC, since sethi/or builds
1127 unsigned numbers. If we permit ourselves to modify
1128 code so we get sethi/xor, this could work.
1129 Question: do we consider conditionally re-enabling
1130 this for -fpic, once we know about object code models? */
1131 /* If the .got section is more than 0x1000 bytes, we add
1132 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1133 bit relocations have a greater chance of working. */
1134 if (sgot->_raw_size >= 0x1000
1135 && elf_hash_table (info)->hgot->root.u.def.value == 0)
1136 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1137 #endif
1138
1139 break;
1140
1141 case R_SPARC_WPLT30:
1142 case R_SPARC_PLT32:
1143 case R_SPARC_HIPLT22:
1144 case R_SPARC_LOPLT10:
1145 case R_SPARC_PCPLT32:
1146 case R_SPARC_PCPLT22:
1147 case R_SPARC_PCPLT10:
1148 case R_SPARC_PLT64:
1149 /* This symbol requires a procedure linkage table entry. We
1150 actually build the entry in adjust_dynamic_symbol,
1151 because this might be a case of linking PIC code without
1152 linking in any dynamic objects, in which case we don't
1153 need to generate a procedure linkage table after all. */
1154
1155 if (h == NULL)
1156 {
1157 /* It does not make sense to have a procedure linkage
1158 table entry for a local symbol. */
1159 bfd_set_error (bfd_error_bad_value);
1160 return false;
1161 }
1162
1163 /* Make sure this symbol is output as a dynamic symbol. */
1164 if (h->dynindx == -1)
1165 {
1166 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1167 return false;
1168 }
1169
1170 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1171 break;
1172
1173 case R_SPARC_PC10:
1174 case R_SPARC_PC22:
1175 case R_SPARC_PC_HH22:
1176 case R_SPARC_PC_HM10:
1177 case R_SPARC_PC_LM22:
1178 if (h != NULL
1179 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1180 break;
1181 /* Fall through. */
1182 case R_SPARC_DISP8:
1183 case R_SPARC_DISP16:
1184 case R_SPARC_DISP32:
1185 case R_SPARC_DISP64:
1186 case R_SPARC_WDISP30:
1187 case R_SPARC_WDISP22:
1188 case R_SPARC_WDISP19:
1189 case R_SPARC_WDISP16:
1190 if (h == NULL)
1191 break;
1192 /* Fall through. */
1193 case R_SPARC_8:
1194 case R_SPARC_16:
1195 case R_SPARC_32:
1196 case R_SPARC_HI22:
1197 case R_SPARC_22:
1198 case R_SPARC_13:
1199 case R_SPARC_LO10:
1200 case R_SPARC_UA32:
1201 case R_SPARC_10:
1202 case R_SPARC_11:
1203 case R_SPARC_64:
1204 case R_SPARC_OLO10:
1205 case R_SPARC_HH22:
1206 case R_SPARC_HM10:
1207 case R_SPARC_LM22:
1208 case R_SPARC_7:
1209 case R_SPARC_5:
1210 case R_SPARC_6:
1211 case R_SPARC_HIX22:
1212 case R_SPARC_LOX10:
1213 case R_SPARC_H44:
1214 case R_SPARC_M44:
1215 case R_SPARC_L44:
1216 case R_SPARC_UA64:
1217 case R_SPARC_UA16:
1218 /* When creating a shared object, we must copy these relocs
1219 into the output file. We create a reloc section in
1220 dynobj and make room for the reloc.
1221
1222 But don't do this for debugging sections -- this shows up
1223 with DWARF2 -- first because they are not loaded, and
1224 second because DWARF sez the debug info is not to be
1225 biased by the load address. */
1226 if (info->shared && (sec->flags & SEC_ALLOC))
1227 {
1228 if (sreloc == NULL)
1229 {
1230 const char *name;
1231
1232 name = (bfd_elf_string_from_elf_section
1233 (abfd,
1234 elf_elfheader (abfd)->e_shstrndx,
1235 elf_section_data (sec)->rel_hdr.sh_name));
1236 if (name == NULL)
1237 return false;
1238
1239 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1240 && strcmp (bfd_get_section_name (abfd, sec),
1241 name + 5) == 0);
1242
1243 sreloc = bfd_get_section_by_name (dynobj, name);
1244 if (sreloc == NULL)
1245 {
1246 flagword flags;
1247
1248 sreloc = bfd_make_section (dynobj, name);
1249 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1250 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1251 if ((sec->flags & SEC_ALLOC) != 0)
1252 flags |= SEC_ALLOC | SEC_LOAD;
1253 if (sreloc == NULL
1254 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1255 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
1256 return false;
1257 }
1258 if (sec->flags & SEC_READONLY)
1259 info->flags |= DF_TEXTREL;
1260 }
1261
1262 sreloc->_raw_size += sizeof (Elf64_External_Rela);
1263 }
1264 break;
1265
1266 case R_SPARC_REGISTER:
1267 /* Nothing to do. */
1268 break;
1269
1270 default:
1271 (*_bfd_error_handler) (_("%s: check_relocs: unhandled reloc type %d"),
1272 bfd_archive_filename (abfd),
1273 ELF64_R_TYPE_ID (rel->r_info));
1274 return false;
1275 }
1276 }
1277
1278 return true;
1279 }
1280
1281 /* Hook called by the linker routine which adds symbols from an object
1282 file. We use it for STT_REGISTER symbols. */
1283
1284 static boolean
1285 sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1286 bfd *abfd;
1287 struct bfd_link_info *info;
1288 const Elf_Internal_Sym *sym;
1289 const char **namep;
1290 flagword *flagsp ATTRIBUTE_UNUSED;
1291 asection **secp ATTRIBUTE_UNUSED;
1292 bfd_vma *valp ATTRIBUTE_UNUSED;
1293 {
1294 static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" };
1295
1296 if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER)
1297 {
1298 int reg;
1299 struct sparc64_elf_app_reg *p;
1300
1301 reg = (int)sym->st_value;
1302 switch (reg & ~1)
1303 {
1304 case 2: reg -= 2; break;
1305 case 6: reg -= 4; break;
1306 default:
1307 (*_bfd_error_handler)
1308 (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"),
1309 bfd_archive_filename (abfd));
1310 return false;
1311 }
1312
1313 if (info->hash->creator != abfd->xvec
1314 || (abfd->flags & DYNAMIC) != 0)
1315 {
1316 /* STT_REGISTER only works when linking an elf64_sparc object.
1317 If STT_REGISTER comes from a dynamic object, don't put it into
1318 the output bfd. The dynamic linker will recheck it. */
1319 *namep = NULL;
1320 return true;
1321 }
1322
1323 p = sparc64_elf_hash_table(info)->app_regs + reg;
1324
1325 if (p->name != NULL && strcmp (p->name, *namep))
1326 {
1327 (*_bfd_error_handler)
1328 (_("Register %%g%d used incompatibly: %s in %s"),
1329 (int) sym->st_value,
1330 **namep ? *namep : "#scratch", bfd_archive_filename (abfd));
1331 (*_bfd_error_handler)
1332 (_(" previously %s in %s"),
1333 *p->name ? p->name : "#scratch", bfd_archive_filename (p->abfd));
1334 return false;
1335 }
1336
1337 if (p->name == NULL)
1338 {
1339 if (**namep)
1340 {
1341 struct elf_link_hash_entry *h;
1342
1343 h = (struct elf_link_hash_entry *)
1344 bfd_link_hash_lookup (info->hash, *namep, false, false, false);
1345
1346 if (h != NULL)
1347 {
1348 unsigned char type = h->type;
1349
1350 if (type > STT_FUNC)
1351 type = 0;
1352 (*_bfd_error_handler)
1353 (_("Symbol `%s' has differing types: %s in %s"),
1354 *namep, "REGISTER", bfd_archive_filename (abfd));
1355 (*_bfd_error_handler)
1356 (_(" previously %s in %s"),
1357 stt_types[type], bfd_archive_filename (p->abfd));
1358 return false;
1359 }
1360
1361 p->name = bfd_hash_allocate (&info->hash->table,
1362 strlen (*namep) + 1);
1363 if (!p->name)
1364 return false;
1365
1366 strcpy (p->name, *namep);
1367 }
1368 else
1369 p->name = "";
1370 p->bind = ELF_ST_BIND (sym->st_info);
1371 p->abfd = abfd;
1372 p->shndx = sym->st_shndx;
1373 }
1374 else
1375 {
1376 if (p->bind == STB_WEAK
1377 && ELF_ST_BIND (sym->st_info) == STB_GLOBAL)
1378 {
1379 p->bind = STB_GLOBAL;
1380 p->abfd = abfd;
1381 }
1382 }
1383 *namep = NULL;
1384 return true;
1385 }
1386 else if (! *namep || ! **namep)
1387 return true;
1388 else
1389 {
1390 int i;
1391 struct sparc64_elf_app_reg *p;
1392
1393 p = sparc64_elf_hash_table(info)->app_regs;
1394 for (i = 0; i < 4; i++, p++)
1395 if (p->name != NULL && ! strcmp (p->name, *namep))
1396 {
1397 unsigned char type = ELF_ST_TYPE (sym->st_info);
1398
1399 if (type > STT_FUNC)
1400 type = 0;
1401 (*_bfd_error_handler)
1402 (_("Symbol `%s' has differing types: %s in %s"),
1403 *namep, stt_types[type], bfd_archive_filename (abfd));
1404 (*_bfd_error_handler)
1405 (_(" previously %s in %s"),
1406 "REGISTER", bfd_archive_filename (p->abfd));
1407 return false;
1408 }
1409 }
1410 return true;
1411 }
1412
1413 /* This function takes care of emiting STT_REGISTER symbols
1414 which we cannot easily keep in the symbol hash table. */
1415
1416 static boolean
1417 sparc64_elf_output_arch_syms (output_bfd, info, finfo, func)
1418 bfd *output_bfd ATTRIBUTE_UNUSED;
1419 struct bfd_link_info *info;
1420 PTR finfo;
1421 boolean (*func) PARAMS ((PTR, const char *,
1422 Elf_Internal_Sym *, asection *));
1423 {
1424 int reg;
1425 struct sparc64_elf_app_reg *app_regs =
1426 sparc64_elf_hash_table(info)->app_regs;
1427 Elf_Internal_Sym sym;
1428
1429 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries
1430 at the end of the dynlocal list, so they came at the end of the local
1431 symbols in the symtab. Except that they aren't STB_LOCAL, so we need
1432 to back up symtab->sh_info. */
1433 if (elf_hash_table (info)->dynlocal)
1434 {
1435 bfd * dynobj = elf_hash_table (info)->dynobj;
1436 asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym");
1437 struct elf_link_local_dynamic_entry *e;
1438
1439 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
1440 if (e->input_indx == -1)
1441 break;
1442 if (e)
1443 {
1444 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
1445 = e->dynindx;
1446 }
1447 }
1448
1449 if (info->strip == strip_all)
1450 return true;
1451
1452 for (reg = 0; reg < 4; reg++)
1453 if (app_regs [reg].name != NULL)
1454 {
1455 if (info->strip == strip_some
1456 && bfd_hash_lookup (info->keep_hash,
1457 app_regs [reg].name,
1458 false, false) == NULL)
1459 continue;
1460
1461 sym.st_value = reg < 2 ? reg + 2 : reg + 4;
1462 sym.st_size = 0;
1463 sym.st_other = 0;
1464 sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER);
1465 sym.st_shndx = app_regs [reg].shndx;
1466 if (! (*func) (finfo, app_regs [reg].name, &sym,
1467 sym.st_shndx == SHN_ABS
1468 ? bfd_abs_section_ptr : bfd_und_section_ptr))
1469 return false;
1470 }
1471
1472 return true;
1473 }
1474
1475 static int
1476 sparc64_elf_get_symbol_type (elf_sym, type)
1477 Elf_Internal_Sym * elf_sym;
1478 int type;
1479 {
1480 if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER)
1481 return STT_REGISTER;
1482 else
1483 return type;
1484 }
1485
1486 /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
1487 even in SHN_UNDEF section. */
1488
1489 static void
1490 sparc64_elf_symbol_processing (abfd, asym)
1491 bfd *abfd ATTRIBUTE_UNUSED;
1492 asymbol *asym;
1493 {
1494 elf_symbol_type *elfsym;
1495
1496 elfsym = (elf_symbol_type *) asym;
1497 if (elfsym->internal_elf_sym.st_info
1498 == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER))
1499 {
1500 asym->flags |= BSF_GLOBAL;
1501 }
1502 }
1503
1504 /* Adjust a symbol defined by a dynamic object and referenced by a
1505 regular object. The current definition is in some section of the
1506 dynamic object, but we're not including those sections. We have to
1507 change the definition to something the rest of the link can
1508 understand. */
1509
1510 static boolean
1511 sparc64_elf_adjust_dynamic_symbol (info, h)
1512 struct bfd_link_info *info;
1513 struct elf_link_hash_entry *h;
1514 {
1515 bfd *dynobj;
1516 asection *s;
1517 unsigned int power_of_two;
1518
1519 dynobj = elf_hash_table (info)->dynobj;
1520
1521 /* Make sure we know what is going on here. */
1522 BFD_ASSERT (dynobj != NULL
1523 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1524 || h->weakdef != NULL
1525 || ((h->elf_link_hash_flags
1526 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1527 && (h->elf_link_hash_flags
1528 & ELF_LINK_HASH_REF_REGULAR) != 0
1529 && (h->elf_link_hash_flags
1530 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1531
1532 /* If this is a function, put it in the procedure linkage table. We
1533 will fill in the contents of the procedure linkage table later
1534 (although we could actually do it here). The STT_NOTYPE
1535 condition is a hack specifically for the Oracle libraries
1536 delivered for Solaris; for some inexplicable reason, they define
1537 some of their functions as STT_NOTYPE when they really should be
1538 STT_FUNC. */
1539 if (h->type == STT_FUNC
1540 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
1541 || (h->type == STT_NOTYPE
1542 && (h->root.type == bfd_link_hash_defined
1543 || h->root.type == bfd_link_hash_defweak)
1544 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1545 {
1546 if (! elf_hash_table (info)->dynamic_sections_created)
1547 {
1548 /* This case can occur if we saw a WPLT30 reloc in an input
1549 file, but none of the input files were dynamic objects.
1550 In such a case, we don't actually need to build a
1551 procedure linkage table, and we can just do a WDISP30
1552 reloc instead. */
1553 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
1554 return true;
1555 }
1556
1557 s = bfd_get_section_by_name (dynobj, ".plt");
1558 BFD_ASSERT (s != NULL);
1559
1560 /* The first four bit in .plt is reserved. */
1561 if (s->_raw_size == 0)
1562 s->_raw_size = PLT_HEADER_SIZE;
1563
1564 /* If this symbol is not defined in a regular file, and we are
1565 not generating a shared library, then set the symbol to this
1566 location in the .plt. This is required to make function
1567 pointers compare as equal between the normal executable and
1568 the shared library. */
1569 if (! info->shared
1570 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1571 {
1572 h->root.u.def.section = s;
1573 h->root.u.def.value = s->_raw_size;
1574 }
1575
1576 /* To simplify matters later, just store the plt index here. */
1577 h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE;
1578
1579 /* Make room for this entry. */
1580 s->_raw_size += PLT_ENTRY_SIZE;
1581
1582 /* We also need to make an entry in the .rela.plt section. */
1583
1584 s = bfd_get_section_by_name (dynobj, ".rela.plt");
1585 BFD_ASSERT (s != NULL);
1586
1587 s->_raw_size += sizeof (Elf64_External_Rela);
1588
1589 /* The procedure linkage table size is bounded by the magnitude
1590 of the offset we can describe in the entry. */
1591 if (s->_raw_size >= (bfd_vma)1 << 32)
1592 {
1593 bfd_set_error (bfd_error_bad_value);
1594 return false;
1595 }
1596
1597 return true;
1598 }
1599
1600 /* If this is a weak symbol, and there is a real definition, the
1601 processor independent code will have arranged for us to see the
1602 real definition first, and we can just use the same value. */
1603 if (h->weakdef != NULL)
1604 {
1605 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1606 || h->weakdef->root.type == bfd_link_hash_defweak);
1607 h->root.u.def.section = h->weakdef->root.u.def.section;
1608 h->root.u.def.value = h->weakdef->root.u.def.value;
1609 return true;
1610 }
1611
1612 /* This is a reference to a symbol defined by a dynamic object which
1613 is not a function. */
1614
1615 /* If we are creating a shared library, we must presume that the
1616 only references to the symbol are via the global offset table.
1617 For such cases we need not do anything here; the relocations will
1618 be handled correctly by relocate_section. */
1619 if (info->shared)
1620 return true;
1621
1622 /* We must allocate the symbol in our .dynbss section, which will
1623 become part of the .bss section of the executable. There will be
1624 an entry for this symbol in the .dynsym section. The dynamic
1625 object will contain position independent code, so all references
1626 from the dynamic object to this symbol will go through the global
1627 offset table. The dynamic linker will use the .dynsym entry to
1628 determine the address it must put in the global offset table, so
1629 both the dynamic object and the regular object will refer to the
1630 same memory location for the variable. */
1631
1632 s = bfd_get_section_by_name (dynobj, ".dynbss");
1633 BFD_ASSERT (s != NULL);
1634
1635 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1636 to copy the initial value out of the dynamic object and into the
1637 runtime process image. We need to remember the offset into the
1638 .rel.bss section we are going to use. */
1639 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1640 {
1641 asection *srel;
1642
1643 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1644 BFD_ASSERT (srel != NULL);
1645 srel->_raw_size += sizeof (Elf64_External_Rela);
1646 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1647 }
1648
1649 /* We need to figure out the alignment required for this symbol. I
1650 have no idea how ELF linkers handle this. 16-bytes is the size
1651 of the largest type that requires hard alignment -- long double. */
1652 power_of_two = bfd_log2 (h->size);
1653 if (power_of_two > 4)
1654 power_of_two = 4;
1655
1656 /* Apply the required alignment. */
1657 s->_raw_size = BFD_ALIGN (s->_raw_size,
1658 (bfd_size_type) (1 << power_of_two));
1659 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1660 {
1661 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1662 return false;
1663 }
1664
1665 /* Define the symbol as being at this point in the section. */
1666 h->root.u.def.section = s;
1667 h->root.u.def.value = s->_raw_size;
1668
1669 /* Increment the section size to make room for the symbol. */
1670 s->_raw_size += h->size;
1671
1672 return true;
1673 }
1674
1675 /* Set the sizes of the dynamic sections. */
1676
1677 static boolean
1678 sparc64_elf_size_dynamic_sections (output_bfd, info)
1679 bfd *output_bfd;
1680 struct bfd_link_info *info;
1681 {
1682 bfd *dynobj;
1683 asection *s;
1684 boolean relplt;
1685
1686 dynobj = elf_hash_table (info)->dynobj;
1687 BFD_ASSERT (dynobj != NULL);
1688
1689 if (elf_hash_table (info)->dynamic_sections_created)
1690 {
1691 /* Set the contents of the .interp section to the interpreter. */
1692 if (! info->shared)
1693 {
1694 s = bfd_get_section_by_name (dynobj, ".interp");
1695 BFD_ASSERT (s != NULL);
1696 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1697 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1698 }
1699 }
1700 else
1701 {
1702 /* We may have created entries in the .rela.got section.
1703 However, if we are not creating the dynamic sections, we will
1704 not actually use these entries. Reset the size of .rela.got,
1705 which will cause it to get stripped from the output file
1706 below. */
1707 s = bfd_get_section_by_name (dynobj, ".rela.got");
1708 if (s != NULL)
1709 s->_raw_size = 0;
1710 }
1711
1712 /* The check_relocs and adjust_dynamic_symbol entry points have
1713 determined the sizes of the various dynamic sections. Allocate
1714 memory for them. */
1715 relplt = false;
1716 for (s = dynobj->sections; s != NULL; s = s->next)
1717 {
1718 const char *name;
1719 boolean strip;
1720
1721 if ((s->flags & SEC_LINKER_CREATED) == 0)
1722 continue;
1723
1724 /* It's OK to base decisions on the section name, because none
1725 of the dynobj section names depend upon the input files. */
1726 name = bfd_get_section_name (dynobj, s);
1727
1728 strip = false;
1729
1730 if (strncmp (name, ".rela", 5) == 0)
1731 {
1732 if (s->_raw_size == 0)
1733 {
1734 /* If we don't need this section, strip it from the
1735 output file. This is to handle .rela.bss and
1736 .rel.plt. We must create it in
1737 create_dynamic_sections, because it must be created
1738 before the linker maps input sections to output
1739 sections. The linker does that before
1740 adjust_dynamic_symbol is called, and it is that
1741 function which decides whether anything needs to go
1742 into these sections. */
1743 strip = true;
1744 }
1745 else
1746 {
1747 if (strcmp (name, ".rela.plt") == 0)
1748 relplt = true;
1749
1750 /* We use the reloc_count field as a counter if we need
1751 to copy relocs into the output file. */
1752 s->reloc_count = 0;
1753 }
1754 }
1755 else if (strcmp (name, ".plt") != 0
1756 && strncmp (name, ".got", 4) != 0)
1757 {
1758 /* It's not one of our sections, so don't allocate space. */
1759 continue;
1760 }
1761
1762 if (strip)
1763 {
1764 _bfd_strip_section_from_output (info, s);
1765 continue;
1766 }
1767
1768 /* Allocate memory for the section contents. Zero the memory
1769 for the benefit of .rela.plt, which has 4 unused entries
1770 at the beginning, and we don't want garbage. */
1771 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1772 if (s->contents == NULL && s->_raw_size != 0)
1773 return false;
1774 }
1775
1776 if (elf_hash_table (info)->dynamic_sections_created)
1777 {
1778 /* Add some entries to the .dynamic section. We fill in the
1779 values later, in sparc64_elf_finish_dynamic_sections, but we
1780 must add the entries now so that we get the correct size for
1781 the .dynamic section. The DT_DEBUG entry is filled in by the
1782 dynamic linker and used by the debugger. */
1783 #define add_dynamic_entry(TAG, VAL) \
1784 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1785
1786 int reg;
1787 struct sparc64_elf_app_reg * app_regs;
1788 struct bfd_strtab_hash *dynstr;
1789 struct elf_link_hash_table *eht = elf_hash_table (info);
1790
1791 if (!info->shared)
1792 {
1793 if (!add_dynamic_entry (DT_DEBUG, 0))
1794 return false;
1795 }
1796
1797 if (relplt)
1798 {
1799 if (!add_dynamic_entry (DT_PLTGOT, 0)
1800 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1801 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1802 || !add_dynamic_entry (DT_JMPREL, 0))
1803 return false;
1804 }
1805
1806 if (!add_dynamic_entry (DT_RELA, 0)
1807 || !add_dynamic_entry (DT_RELASZ, 0)
1808 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
1809 return false;
1810
1811 if (info->flags & DF_TEXTREL)
1812 {
1813 if (!add_dynamic_entry (DT_TEXTREL, 0))
1814 return false;
1815 }
1816
1817 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
1818 entries if needed. */
1819 app_regs = sparc64_elf_hash_table (info)->app_regs;
1820 dynstr = eht->dynstr;
1821
1822 for (reg = 0; reg < 4; reg++)
1823 if (app_regs [reg].name != NULL)
1824 {
1825 struct elf_link_local_dynamic_entry *entry, *e;
1826
1827 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
1828 return false;
1829
1830 entry = (struct elf_link_local_dynamic_entry *)
1831 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
1832 if (entry == NULL)
1833 return false;
1834
1835 /* We cheat here a little bit: the symbol will not be local, so we
1836 put it at the end of the dynlocal linked list. We will fix it
1837 later on, as we have to fix other fields anyway. */
1838 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
1839 entry->isym.st_size = 0;
1840 if (*app_regs [reg].name != '\0')
1841 entry->isym.st_name
1842 = _bfd_stringtab_add (dynstr, app_regs[reg].name, true, false);
1843 else
1844 entry->isym.st_name = 0;
1845 entry->isym.st_other = 0;
1846 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
1847 STT_REGISTER);
1848 entry->isym.st_shndx = app_regs [reg].shndx;
1849 entry->next = NULL;
1850 entry->input_bfd = output_bfd;
1851 entry->input_indx = -1;
1852
1853 if (eht->dynlocal == NULL)
1854 eht->dynlocal = entry;
1855 else
1856 {
1857 for (e = eht->dynlocal; e->next; e = e->next)
1858 ;
1859 e->next = entry;
1860 }
1861 eht->dynsymcount++;
1862 }
1863 }
1864 #undef add_dynamic_entry
1865
1866 return true;
1867 }
1868 \f
1869 #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
1870 #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
1871
1872 static boolean
1873 sparc64_elf_relax_section (abfd, section, link_info, again)
1874 bfd *abfd ATTRIBUTE_UNUSED;
1875 asection *section ATTRIBUTE_UNUSED;
1876 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
1877 boolean *again;
1878 {
1879 *again = false;
1880 SET_SEC_DO_RELAX (section);
1881 return true;
1882 }
1883 \f
1884 /* Relocate a SPARC64 ELF section. */
1885
1886 static boolean
1887 sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1888 contents, relocs, local_syms, local_sections)
1889 bfd *output_bfd;
1890 struct bfd_link_info *info;
1891 bfd *input_bfd;
1892 asection *input_section;
1893 bfd_byte *contents;
1894 Elf_Internal_Rela *relocs;
1895 Elf_Internal_Sym *local_syms;
1896 asection **local_sections;
1897 {
1898 bfd *dynobj;
1899 Elf_Internal_Shdr *symtab_hdr;
1900 struct elf_link_hash_entry **sym_hashes;
1901 bfd_vma *local_got_offsets;
1902 bfd_vma got_base;
1903 asection *sgot;
1904 asection *splt;
1905 asection *sreloc;
1906 Elf_Internal_Rela *rel;
1907 Elf_Internal_Rela *relend;
1908
1909 dynobj = elf_hash_table (info)->dynobj;
1910 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1911 sym_hashes = elf_sym_hashes (input_bfd);
1912 local_got_offsets = elf_local_got_offsets (input_bfd);
1913
1914 if (elf_hash_table(info)->hgot == NULL)
1915 got_base = 0;
1916 else
1917 got_base = elf_hash_table (info)->hgot->root.u.def.value;
1918
1919 sgot = splt = sreloc = NULL;
1920
1921 rel = relocs;
1922 relend = relocs + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr);
1923 for (; rel < relend; rel++)
1924 {
1925 int r_type;
1926 reloc_howto_type *howto;
1927 unsigned long r_symndx;
1928 struct elf_link_hash_entry *h;
1929 Elf_Internal_Sym *sym;
1930 asection *sec;
1931 bfd_vma relocation;
1932 bfd_reloc_status_type r;
1933
1934 r_type = ELF64_R_TYPE_ID (rel->r_info);
1935 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
1936 {
1937 bfd_set_error (bfd_error_bad_value);
1938 return false;
1939 }
1940 howto = sparc64_elf_howto_table + r_type;
1941
1942 r_symndx = ELF64_R_SYM (rel->r_info);
1943
1944 if (info->relocateable)
1945 {
1946 /* This is a relocateable link. We don't have to change
1947 anything, unless the reloc is against a section symbol,
1948 in which case we have to adjust according to where the
1949 section symbol winds up in the output section. */
1950 if (r_symndx < symtab_hdr->sh_info)
1951 {
1952 sym = local_syms + r_symndx;
1953 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1954 {
1955 sec = local_sections[r_symndx];
1956 rel->r_addend += sec->output_offset + sym->st_value;
1957 }
1958 }
1959
1960 continue;
1961 }
1962
1963 /* This is a final link. */
1964 h = NULL;
1965 sym = NULL;
1966 sec = NULL;
1967 if (r_symndx < symtab_hdr->sh_info)
1968 {
1969 sym = local_syms + r_symndx;
1970 sec = local_sections[r_symndx];
1971 relocation = (sec->output_section->vma
1972 + sec->output_offset
1973 + sym->st_value);
1974 }
1975 else
1976 {
1977 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1978 while (h->root.type == bfd_link_hash_indirect
1979 || h->root.type == bfd_link_hash_warning)
1980 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1981 if (h->root.type == bfd_link_hash_defined
1982 || h->root.type == bfd_link_hash_defweak)
1983 {
1984 boolean skip_it = false;
1985 sec = h->root.u.def.section;
1986
1987 switch (r_type)
1988 {
1989 case R_SPARC_WPLT30:
1990 case R_SPARC_PLT32:
1991 case R_SPARC_HIPLT22:
1992 case R_SPARC_LOPLT10:
1993 case R_SPARC_PCPLT32:
1994 case R_SPARC_PCPLT22:
1995 case R_SPARC_PCPLT10:
1996 case R_SPARC_PLT64:
1997 if (h->plt.offset != (bfd_vma) -1)
1998 skip_it = true;
1999 break;
2000
2001 case R_SPARC_GOT10:
2002 case R_SPARC_GOT13:
2003 case R_SPARC_GOT22:
2004 if (elf_hash_table(info)->dynamic_sections_created
2005 && (!info->shared
2006 || (!info->symbolic && h->dynindx != -1)
2007 || !(h->elf_link_hash_flags
2008 & ELF_LINK_HASH_DEF_REGULAR)))
2009 skip_it = true;
2010 break;
2011
2012 case R_SPARC_PC10:
2013 case R_SPARC_PC22:
2014 case R_SPARC_PC_HH22:
2015 case R_SPARC_PC_HM10:
2016 case R_SPARC_PC_LM22:
2017 if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
2018 break;
2019 /* FALLTHRU */
2020
2021 case R_SPARC_8:
2022 case R_SPARC_16:
2023 case R_SPARC_32:
2024 case R_SPARC_DISP8:
2025 case R_SPARC_DISP16:
2026 case R_SPARC_DISP32:
2027 case R_SPARC_WDISP30:
2028 case R_SPARC_WDISP22:
2029 case R_SPARC_HI22:
2030 case R_SPARC_22:
2031 case R_SPARC_13:
2032 case R_SPARC_LO10:
2033 case R_SPARC_UA32:
2034 case R_SPARC_10:
2035 case R_SPARC_11:
2036 case R_SPARC_64:
2037 case R_SPARC_OLO10:
2038 case R_SPARC_HH22:
2039 case R_SPARC_HM10:
2040 case R_SPARC_LM22:
2041 case R_SPARC_WDISP19:
2042 case R_SPARC_WDISP16:
2043 case R_SPARC_7:
2044 case R_SPARC_5:
2045 case R_SPARC_6:
2046 case R_SPARC_DISP64:
2047 case R_SPARC_HIX22:
2048 case R_SPARC_LOX10:
2049 case R_SPARC_H44:
2050 case R_SPARC_M44:
2051 case R_SPARC_L44:
2052 case R_SPARC_UA64:
2053 case R_SPARC_UA16:
2054 if (info->shared
2055 && ((!info->symbolic && h->dynindx != -1)
2056 || !(h->elf_link_hash_flags
2057 & ELF_LINK_HASH_DEF_REGULAR)))
2058 skip_it = true;
2059 break;
2060 }
2061
2062 if (skip_it)
2063 {
2064 /* In these cases, we don't need the relocation
2065 value. We check specially because in some
2066 obscure cases sec->output_section will be NULL. */
2067 relocation = 0;
2068 }
2069 else
2070 {
2071 relocation = (h->root.u.def.value
2072 + sec->output_section->vma
2073 + sec->output_offset);
2074 }
2075 }
2076 else if (h->root.type == bfd_link_hash_undefweak)
2077 relocation = 0;
2078 else if (info->shared
2079 && (!info->symbolic || info->allow_shlib_undefined)
2080 && !info->no_undefined
2081 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2082 relocation = 0;
2083 else
2084 {
2085 if (! ((*info->callbacks->undefined_symbol)
2086 (info, h->root.root.string, input_bfd,
2087 input_section, rel->r_offset,
2088 (!info->shared || info->no_undefined
2089 || ELF_ST_VISIBILITY (h->other)))))
2090 return false;
2091
2092 /* To avoid generating warning messages about truncated
2093 relocations, set the relocation's address to be the same as
2094 the start of this section. */
2095
2096 if (input_section->output_section != NULL)
2097 relocation = input_section->output_section->vma;
2098 else
2099 relocation = 0;
2100 }
2101 }
2102
2103 /* When generating a shared object, these relocations are copied
2104 into the output file to be resolved at run time. */
2105 if (info->shared && (input_section->flags & SEC_ALLOC))
2106 {
2107 switch (r_type)
2108 {
2109 case R_SPARC_PC10:
2110 case R_SPARC_PC22:
2111 case R_SPARC_PC_HH22:
2112 case R_SPARC_PC_HM10:
2113 case R_SPARC_PC_LM22:
2114 if (h != NULL
2115 && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
2116 break;
2117 /* Fall through. */
2118 case R_SPARC_DISP8:
2119 case R_SPARC_DISP16:
2120 case R_SPARC_DISP32:
2121 case R_SPARC_WDISP30:
2122 case R_SPARC_WDISP22:
2123 case R_SPARC_WDISP19:
2124 case R_SPARC_WDISP16:
2125 case R_SPARC_DISP64:
2126 if (h == NULL)
2127 break;
2128 /* Fall through. */
2129 case R_SPARC_8:
2130 case R_SPARC_16:
2131 case R_SPARC_32:
2132 case R_SPARC_HI22:
2133 case R_SPARC_22:
2134 case R_SPARC_13:
2135 case R_SPARC_LO10:
2136 case R_SPARC_UA32:
2137 case R_SPARC_10:
2138 case R_SPARC_11:
2139 case R_SPARC_64:
2140 case R_SPARC_OLO10:
2141 case R_SPARC_HH22:
2142 case R_SPARC_HM10:
2143 case R_SPARC_LM22:
2144 case R_SPARC_7:
2145 case R_SPARC_5:
2146 case R_SPARC_6:
2147 case R_SPARC_HIX22:
2148 case R_SPARC_LOX10:
2149 case R_SPARC_H44:
2150 case R_SPARC_M44:
2151 case R_SPARC_L44:
2152 case R_SPARC_UA64:
2153 case R_SPARC_UA16:
2154 {
2155 Elf_Internal_Rela outrel;
2156 boolean skip;
2157
2158 if (sreloc == NULL)
2159 {
2160 const char *name =
2161 (bfd_elf_string_from_elf_section
2162 (input_bfd,
2163 elf_elfheader (input_bfd)->e_shstrndx,
2164 elf_section_data (input_section)->rel_hdr.sh_name));
2165
2166 if (name == NULL)
2167 return false;
2168
2169 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2170 && strcmp (bfd_get_section_name(input_bfd,
2171 input_section),
2172 name + 5) == 0);
2173
2174 sreloc = bfd_get_section_by_name (dynobj, name);
2175 BFD_ASSERT (sreloc != NULL);
2176 }
2177
2178 skip = false;
2179
2180 if (elf_section_data (input_section)->stab_info == NULL)
2181 outrel.r_offset = rel->r_offset;
2182 else
2183 {
2184 bfd_vma off;
2185
2186 off = (_bfd_stab_section_offset
2187 (output_bfd, &elf_hash_table (info)->stab_info,
2188 input_section,
2189 &elf_section_data (input_section)->stab_info,
2190 rel->r_offset));
2191 if (off == MINUS_ONE)
2192 skip = true;
2193 outrel.r_offset = off;
2194 }
2195
2196 outrel.r_offset += (input_section->output_section->vma
2197 + input_section->output_offset);
2198
2199 /* Optimize unaligned reloc usage now that we know where
2200 it finally resides. */
2201 switch (r_type)
2202 {
2203 case R_SPARC_16:
2204 if (outrel.r_offset & 1) r_type = R_SPARC_UA16;
2205 break;
2206 case R_SPARC_UA16:
2207 if (!(outrel.r_offset & 1)) r_type = R_SPARC_16;
2208 break;
2209 case R_SPARC_32:
2210 if (outrel.r_offset & 3) r_type = R_SPARC_UA32;
2211 break;
2212 case R_SPARC_UA32:
2213 if (!(outrel.r_offset & 3)) r_type = R_SPARC_32;
2214 break;
2215 case R_SPARC_64:
2216 if (outrel.r_offset & 7) r_type = R_SPARC_UA64;
2217 break;
2218 case R_SPARC_UA64:
2219 if (!(outrel.r_offset & 7)) r_type = R_SPARC_64;
2220 break;
2221 }
2222
2223 if (skip)
2224 memset (&outrel, 0, sizeof outrel);
2225 /* h->dynindx may be -1 if the symbol was marked to
2226 become local. */
2227 else if (h != NULL
2228 && ((! info->symbolic && h->dynindx != -1)
2229 || (h->elf_link_hash_flags
2230 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2231 {
2232 BFD_ASSERT (h->dynindx != -1);
2233 outrel.r_info
2234 = ELF64_R_INFO (h->dynindx,
2235 ELF64_R_TYPE_INFO (
2236 ELF64_R_TYPE_DATA (rel->r_info),
2237 r_type));
2238 outrel.r_addend = rel->r_addend;
2239 }
2240 else
2241 {
2242 if (r_type == R_SPARC_64)
2243 {
2244 outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
2245 outrel.r_addend = relocation + rel->r_addend;
2246 }
2247 else
2248 {
2249 long indx;
2250
2251 if (h == NULL)
2252 sec = local_sections[r_symndx];
2253 else
2254 {
2255 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2256 || (h->root.type
2257 == bfd_link_hash_defweak));
2258 sec = h->root.u.def.section;
2259 }
2260 if (sec != NULL && bfd_is_abs_section (sec))
2261 indx = 0;
2262 else if (sec == NULL || sec->owner == NULL)
2263 {
2264 bfd_set_error (bfd_error_bad_value);
2265 return false;
2266 }
2267 else
2268 {
2269 asection *osec;
2270
2271 osec = sec->output_section;
2272 indx = elf_section_data (osec)->dynindx;
2273
2274 /* FIXME: we really should be able to link non-pic
2275 shared libraries. */
2276 if (indx == 0)
2277 {
2278 BFD_FAIL ();
2279 (*_bfd_error_handler)
2280 (_("%s: probably compiled without -fPIC?"),
2281 bfd_archive_filename (input_bfd));
2282 bfd_set_error (bfd_error_bad_value);
2283 return false;
2284 }
2285 }
2286
2287 outrel.r_info
2288 = ELF64_R_INFO (indx,
2289 ELF64_R_TYPE_INFO (
2290 ELF64_R_TYPE_DATA (rel->r_info),
2291 r_type));
2292 outrel.r_addend = relocation + rel->r_addend;
2293 }
2294 }
2295
2296 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
2297 (((Elf64_External_Rela *)
2298 sreloc->contents)
2299 + sreloc->reloc_count));
2300 ++sreloc->reloc_count;
2301
2302 /* This reloc will be computed at runtime, so there's no
2303 need to do anything now. */
2304 continue;
2305 }
2306 break;
2307 }
2308 }
2309
2310 switch (r_type)
2311 {
2312 case R_SPARC_GOT10:
2313 case R_SPARC_GOT13:
2314 case R_SPARC_GOT22:
2315 /* Relocation is to the entry for this symbol in the global
2316 offset table. */
2317 if (sgot == NULL)
2318 {
2319 sgot = bfd_get_section_by_name (dynobj, ".got");
2320 BFD_ASSERT (sgot != NULL);
2321 }
2322
2323 if (h != NULL)
2324 {
2325 bfd_vma off = h->got.offset;
2326 BFD_ASSERT (off != (bfd_vma) -1);
2327
2328 if (! elf_hash_table (info)->dynamic_sections_created
2329 || (info->shared
2330 && (info->symbolic || h->dynindx == -1)
2331 && (h->elf_link_hash_flags
2332 & ELF_LINK_HASH_DEF_REGULAR)))
2333 {
2334 /* This is actually a static link, or it is a -Bsymbolic
2335 link and the symbol is defined locally, or the symbol
2336 was forced to be local because of a version file. We
2337 must initialize this entry in the global offset table.
2338 Since the offset must always be a multiple of 8, we
2339 use the least significant bit to record whether we
2340 have initialized it already.
2341
2342 When doing a dynamic link, we create a .rela.got
2343 relocation entry to initialize the value. This is
2344 done in the finish_dynamic_symbol routine. */
2345
2346 if ((off & 1) != 0)
2347 off &= ~1;
2348 else
2349 {
2350 bfd_put_64 (output_bfd, relocation,
2351 sgot->contents + off);
2352 h->got.offset |= 1;
2353 }
2354 }
2355 relocation = sgot->output_offset + off - got_base;
2356 }
2357 else
2358 {
2359 bfd_vma off;
2360
2361 BFD_ASSERT (local_got_offsets != NULL);
2362 off = local_got_offsets[r_symndx];
2363 BFD_ASSERT (off != (bfd_vma) -1);
2364
2365 /* The offset must always be a multiple of 8. We use
2366 the least significant bit to record whether we have
2367 already processed this entry. */
2368 if ((off & 1) != 0)
2369 off &= ~1;
2370 else
2371 {
2372 local_got_offsets[r_symndx] |= 1;
2373
2374 if (info->shared)
2375 {
2376 asection *srelgot;
2377 Elf_Internal_Rela outrel;
2378
2379 /* The Solaris 2.7 64-bit linker adds the contents
2380 of the location to the value of the reloc.
2381 Note this is different behaviour to the
2382 32-bit linker, which both adds the contents
2383 and ignores the addend. So clear the location. */
2384 bfd_put_64 (output_bfd, (bfd_vma) 0,
2385 sgot->contents + off);
2386
2387 /* We need to generate a R_SPARC_RELATIVE reloc
2388 for the dynamic linker. */
2389 srelgot = bfd_get_section_by_name(dynobj, ".rela.got");
2390 BFD_ASSERT (srelgot != NULL);
2391
2392 outrel.r_offset = (sgot->output_section->vma
2393 + sgot->output_offset
2394 + off);
2395 outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
2396 outrel.r_addend = relocation;
2397 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
2398 (((Elf64_External_Rela *)
2399 srelgot->contents)
2400 + srelgot->reloc_count));
2401 ++srelgot->reloc_count;
2402 }
2403 else
2404 bfd_put_64 (output_bfd, relocation, sgot->contents + off);
2405 }
2406 relocation = sgot->output_offset + off - got_base;
2407 }
2408 goto do_default;
2409
2410 case R_SPARC_WPLT30:
2411 case R_SPARC_PLT32:
2412 case R_SPARC_HIPLT22:
2413 case R_SPARC_LOPLT10:
2414 case R_SPARC_PCPLT32:
2415 case R_SPARC_PCPLT22:
2416 case R_SPARC_PCPLT10:
2417 case R_SPARC_PLT64:
2418 /* Relocation is to the entry for this symbol in the
2419 procedure linkage table. */
2420 BFD_ASSERT (h != NULL);
2421
2422 if (h->plt.offset == (bfd_vma) -1)
2423 {
2424 /* We didn't make a PLT entry for this symbol. This
2425 happens when statically linking PIC code, or when
2426 using -Bsymbolic. */
2427 goto do_default;
2428 }
2429
2430 if (splt == NULL)
2431 {
2432 splt = bfd_get_section_by_name (dynobj, ".plt");
2433 BFD_ASSERT (splt != NULL);
2434 }
2435
2436 relocation = (splt->output_section->vma
2437 + splt->output_offset
2438 + sparc64_elf_plt_entry_offset (h->plt.offset));
2439 if (r_type == R_SPARC_WPLT30)
2440 goto do_wplt30;
2441 goto do_default;
2442
2443 case R_SPARC_OLO10:
2444 {
2445 bfd_vma x;
2446
2447 relocation += rel->r_addend;
2448 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
2449
2450 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2451 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
2452 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2453
2454 r = bfd_check_overflow (howto->complain_on_overflow,
2455 howto->bitsize, howto->rightshift,
2456 bfd_arch_bits_per_address (input_bfd),
2457 relocation);
2458 }
2459 break;
2460
2461 case R_SPARC_WDISP16:
2462 {
2463 bfd_vma x;
2464
2465 relocation += rel->r_addend;
2466 /* Adjust for pc-relative-ness. */
2467 relocation -= (input_section->output_section->vma
2468 + input_section->output_offset);
2469 relocation -= rel->r_offset;
2470
2471 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2472 x &= ~(bfd_vma) 0x303fff;
2473 x |= ((((relocation >> 2) & 0xc000) << 6)
2474 | ((relocation >> 2) & 0x3fff));
2475 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2476
2477 r = bfd_check_overflow (howto->complain_on_overflow,
2478 howto->bitsize, howto->rightshift,
2479 bfd_arch_bits_per_address (input_bfd),
2480 relocation);
2481 }
2482 break;
2483
2484 case R_SPARC_HIX22:
2485 {
2486 bfd_vma x;
2487
2488 relocation += rel->r_addend;
2489 relocation = relocation ^ MINUS_ONE;
2490
2491 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2492 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2493 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2494
2495 r = bfd_check_overflow (howto->complain_on_overflow,
2496 howto->bitsize, howto->rightshift,
2497 bfd_arch_bits_per_address (input_bfd),
2498 relocation);
2499 }
2500 break;
2501
2502 case R_SPARC_LOX10:
2503 {
2504 bfd_vma x;
2505
2506 relocation += rel->r_addend;
2507 relocation = (relocation & 0x3ff) | 0x1c00;
2508
2509 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2510 x = (x & ~(bfd_vma) 0x1fff) | relocation;
2511 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2512
2513 r = bfd_reloc_ok;
2514 }
2515 break;
2516
2517 case R_SPARC_WDISP30:
2518 do_wplt30:
2519 if (SEC_DO_RELAX (input_section)
2520 && rel->r_offset + 4 < input_section->_raw_size)
2521 {
2522 #define G0 0
2523 #define O7 15
2524 #define XCC (2 << 20)
2525 #define COND(x) (((x)&0xf)<<25)
2526 #define CONDA COND(0x8)
2527 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2528 #define INSN_BA (F2(0,2) | CONDA)
2529 #define INSN_OR F3(2, 0x2, 0)
2530 #define INSN_NOP F2(0,4)
2531
2532 bfd_vma x, y;
2533
2534 /* If the instruction is a call with either:
2535 restore
2536 arithmetic instruction with rd == %o7
2537 where rs1 != %o7 and rs2 if it is register != %o7
2538 then we can optimize if the call destination is near
2539 by changing the call into a branch always. */
2540 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2541 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2542 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2543 {
2544 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2545 || ((y & OP3(0x28)) == 0 /* arithmetic */
2546 && (y & RD(~0)) == RD(O7)))
2547 && (y & RS1(~0)) != RS1(O7)
2548 && ((y & F3I(~0))
2549 || (y & RS2(~0)) != RS2(O7)))
2550 {
2551 bfd_vma reloc;
2552
2553 reloc = relocation + rel->r_addend - rel->r_offset;
2554 reloc -= (input_section->output_section->vma
2555 + input_section->output_offset);
2556 if (reloc & 3)
2557 goto do_default;
2558
2559 /* Ensure the branch fits into simm22. */
2560 if ((reloc & ~(bfd_vma)0x7fffff)
2561 && ((reloc | 0x7fffff) != MINUS_ONE))
2562 goto do_default;
2563 reloc >>= 2;
2564
2565 /* Check whether it fits into simm19. */
2566 if ((reloc & 0x3c0000) == 0
2567 || (reloc & 0x3c0000) == 0x3c0000)
2568 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2569 else
2570 x = INSN_BA | (reloc & 0x3fffff); /* ba */
2571 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2572 r = bfd_reloc_ok;
2573 if (rel->r_offset >= 4
2574 && (y & (0xffffffff ^ RS1(~0)))
2575 == (INSN_OR | RD(O7) | RS2(G0)))
2576 {
2577 bfd_vma z;
2578 unsigned int reg;
2579
2580 z = bfd_get_32 (input_bfd,
2581 contents + rel->r_offset - 4);
2582 if ((z & (0xffffffff ^ RD(~0)))
2583 != (INSN_OR | RS1(O7) | RS2(G0)))
2584 break;
2585
2586 /* The sequence was
2587 or %o7, %g0, %rN
2588 call foo
2589 or %rN, %g0, %o7
2590
2591 If call foo was replaced with ba, replace
2592 or %rN, %g0, %o7 with nop. */
2593
2594 reg = (y & RS1(~0)) >> 14;
2595 if (reg != ((z & RD(~0)) >> 25)
2596 || reg == G0 || reg == O7)
2597 break;
2598
2599 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
2600 contents + rel->r_offset + 4);
2601 }
2602 break;
2603 }
2604 }
2605 }
2606 /* FALLTHROUGH */
2607
2608 default:
2609 do_default:
2610 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2611 contents, rel->r_offset,
2612 relocation, rel->r_addend);
2613 break;
2614 }
2615
2616 switch (r)
2617 {
2618 case bfd_reloc_ok:
2619 break;
2620
2621 default:
2622 case bfd_reloc_outofrange:
2623 abort ();
2624
2625 case bfd_reloc_overflow:
2626 {
2627 const char *name;
2628
2629 if (h != NULL)
2630 {
2631 if (h->root.type == bfd_link_hash_undefweak
2632 && howto->pc_relative)
2633 {
2634 /* Assume this is a call protected by other code that
2635 detect the symbol is undefined. If this is the case,
2636 we can safely ignore the overflow. If not, the
2637 program is hosed anyway, and a little warning isn't
2638 going to help. */
2639 break;
2640 }
2641
2642 name = h->root.root.string;
2643 }
2644 else
2645 {
2646 name = (bfd_elf_string_from_elf_section
2647 (input_bfd,
2648 symtab_hdr->sh_link,
2649 sym->st_name));
2650 if (name == NULL)
2651 return false;
2652 if (*name == '\0')
2653 name = bfd_section_name (input_bfd, sec);
2654 }
2655 if (! ((*info->callbacks->reloc_overflow)
2656 (info, name, howto->name, (bfd_vma) 0,
2657 input_bfd, input_section, rel->r_offset)))
2658 return false;
2659 }
2660 break;
2661 }
2662 }
2663
2664 return true;
2665 }
2666
2667 /* Finish up dynamic symbol handling. We set the contents of various
2668 dynamic sections here. */
2669
2670 static boolean
2671 sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
2672 bfd *output_bfd;
2673 struct bfd_link_info *info;
2674 struct elf_link_hash_entry *h;
2675 Elf_Internal_Sym *sym;
2676 {
2677 bfd *dynobj;
2678
2679 dynobj = elf_hash_table (info)->dynobj;
2680
2681 if (h->plt.offset != (bfd_vma) -1)
2682 {
2683 asection *splt;
2684 asection *srela;
2685 Elf_Internal_Rela rela;
2686
2687 /* This symbol has an entry in the PLT. Set it up. */
2688
2689 BFD_ASSERT (h->dynindx != -1);
2690
2691 splt = bfd_get_section_by_name (dynobj, ".plt");
2692 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2693 BFD_ASSERT (splt != NULL && srela != NULL);
2694
2695 /* Fill in the entry in the .rela.plt section. */
2696
2697 if (h->plt.offset < LARGE_PLT_THRESHOLD)
2698 {
2699 rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset);
2700 rela.r_addend = 0;
2701 }
2702 else
2703 {
2704 bfd_vma max = splt->_raw_size / PLT_ENTRY_SIZE;
2705 rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max);
2706 rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4)
2707 -(splt->output_section->vma + splt->output_offset);
2708 }
2709 rela.r_offset += (splt->output_section->vma + splt->output_offset);
2710 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
2711
2712 /* Adjust for the first 4 reserved elements in the .plt section
2713 when setting the offset in the .rela.plt section.
2714 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
2715 thus .plt[4] has corresponding .rela.plt[0] and so on. */
2716
2717 bfd_elf64_swap_reloca_out (output_bfd, &rela,
2718 ((Elf64_External_Rela *) srela->contents
2719 + (h->plt.offset - 4)));
2720
2721 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2722 {
2723 /* Mark the symbol as undefined, rather than as defined in
2724 the .plt section. Leave the value alone. */
2725 sym->st_shndx = SHN_UNDEF;
2726 /* If the symbol is weak, we do need to clear the value.
2727 Otherwise, the PLT entry would provide a definition for
2728 the symbol even if the symbol wasn't defined anywhere,
2729 and so the symbol would never be NULL. */
2730 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
2731 == 0)
2732 sym->st_value = 0;
2733 }
2734 }
2735
2736 if (h->got.offset != (bfd_vma) -1)
2737 {
2738 asection *sgot;
2739 asection *srela;
2740 Elf_Internal_Rela rela;
2741
2742 /* This symbol has an entry in the GOT. Set it up. */
2743
2744 sgot = bfd_get_section_by_name (dynobj, ".got");
2745 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2746 BFD_ASSERT (sgot != NULL && srela != NULL);
2747
2748 rela.r_offset = (sgot->output_section->vma
2749 + sgot->output_offset
2750 + (h->got.offset &~ (bfd_vma) 1));
2751
2752 /* If this is a -Bsymbolic link, and the symbol is defined
2753 locally, we just want to emit a RELATIVE reloc. Likewise if
2754 the symbol was forced to be local because of a version file.
2755 The entry in the global offset table will already have been
2756 initialized in the relocate_section function. */
2757 if (info->shared
2758 && (info->symbolic || h->dynindx == -1)
2759 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
2760 {
2761 asection *sec = h->root.u.def.section;
2762 rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
2763 rela.r_addend = (h->root.u.def.value
2764 + sec->output_section->vma
2765 + sec->output_offset);
2766 }
2767 else
2768 {
2769 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2770 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
2771 rela.r_addend = 0;
2772 }
2773
2774 bfd_elf64_swap_reloca_out (output_bfd, &rela,
2775 ((Elf64_External_Rela *) srela->contents
2776 + srela->reloc_count));
2777 ++srela->reloc_count;
2778 }
2779
2780 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
2781 {
2782 asection *s;
2783 Elf_Internal_Rela rela;
2784
2785 /* This symbols needs a copy reloc. Set it up. */
2786
2787 BFD_ASSERT (h->dynindx != -1);
2788
2789 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2790 ".rela.bss");
2791 BFD_ASSERT (s != NULL);
2792
2793 rela.r_offset = (h->root.u.def.value
2794 + h->root.u.def.section->output_section->vma
2795 + h->root.u.def.section->output_offset);
2796 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY);
2797 rela.r_addend = 0;
2798 bfd_elf64_swap_reloca_out (output_bfd, &rela,
2799 ((Elf64_External_Rela *) s->contents
2800 + s->reloc_count));
2801 ++s->reloc_count;
2802 }
2803
2804 /* Mark some specially defined symbols as absolute. */
2805 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2806 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2807 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2808 sym->st_shndx = SHN_ABS;
2809
2810 return true;
2811 }
2812
2813 /* Finish up the dynamic sections. */
2814
2815 static boolean
2816 sparc64_elf_finish_dynamic_sections (output_bfd, info)
2817 bfd *output_bfd;
2818 struct bfd_link_info *info;
2819 {
2820 bfd *dynobj;
2821 int stt_regidx = -1;
2822 asection *sdyn;
2823 asection *sgot;
2824
2825 dynobj = elf_hash_table (info)->dynobj;
2826
2827 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2828
2829 if (elf_hash_table (info)->dynamic_sections_created)
2830 {
2831 asection *splt;
2832 Elf64_External_Dyn *dyncon, *dynconend;
2833
2834 splt = bfd_get_section_by_name (dynobj, ".plt");
2835 BFD_ASSERT (splt != NULL && sdyn != NULL);
2836
2837 dyncon = (Elf64_External_Dyn *) sdyn->contents;
2838 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2839 for (; dyncon < dynconend; dyncon++)
2840 {
2841 Elf_Internal_Dyn dyn;
2842 const char *name;
2843 boolean size;
2844
2845 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
2846
2847 switch (dyn.d_tag)
2848 {
2849 case DT_PLTGOT: name = ".plt"; size = false; break;
2850 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
2851 case DT_JMPREL: name = ".rela.plt"; size = false; break;
2852 case DT_SPARC_REGISTER:
2853 if (stt_regidx == -1)
2854 {
2855 stt_regidx =
2856 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
2857 if (stt_regidx == -1)
2858 return false;
2859 }
2860 dyn.d_un.d_val = stt_regidx++;
2861 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2862 /* fallthrough */
2863 default: name = NULL; size = false; break;
2864 }
2865
2866 if (name != NULL)
2867 {
2868 asection *s;
2869
2870 s = bfd_get_section_by_name (output_bfd, name);
2871 if (s == NULL)
2872 dyn.d_un.d_val = 0;
2873 else
2874 {
2875 if (! size)
2876 dyn.d_un.d_ptr = s->vma;
2877 else
2878 {
2879 if (s->_cooked_size != 0)
2880 dyn.d_un.d_val = s->_cooked_size;
2881 else
2882 dyn.d_un.d_val = s->_raw_size;
2883 }
2884 }
2885 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2886 }
2887 }
2888
2889 /* Initialize the contents of the .plt section. */
2890 if (splt->_raw_size > 0)
2891 {
2892 sparc64_elf_build_plt (output_bfd, splt->contents,
2893 (int) (splt->_raw_size / PLT_ENTRY_SIZE));
2894 }
2895
2896 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
2897 PLT_ENTRY_SIZE;
2898 }
2899
2900 /* Set the first entry in the global offset table to the address of
2901 the dynamic section. */
2902 sgot = bfd_get_section_by_name (dynobj, ".got");
2903 BFD_ASSERT (sgot != NULL);
2904 if (sgot->_raw_size > 0)
2905 {
2906 if (sdyn == NULL)
2907 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
2908 else
2909 bfd_put_64 (output_bfd,
2910 sdyn->output_section->vma + sdyn->output_offset,
2911 sgot->contents);
2912 }
2913
2914 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
2915
2916 return true;
2917 }
2918
2919 static enum elf_reloc_type_class
2920 sparc64_elf_reloc_type_class (type)
2921 int type;
2922 {
2923 switch (type)
2924 {
2925 case R_SPARC_RELATIVE:
2926 return reloc_class_relative;
2927 case R_SPARC_JMP_SLOT:
2928 return reloc_class_plt;
2929 case R_SPARC_COPY:
2930 return reloc_class_copy;
2931 default:
2932 return reloc_class_normal;
2933 }
2934 }
2935 \f
2936 /* Functions for dealing with the e_flags field. */
2937
2938 /* Copy backend specific data from one object module to another */
2939 static boolean
2940 sparc64_elf_copy_private_bfd_data (ibfd, obfd)
2941 bfd *ibfd, *obfd;
2942 {
2943 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2944 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2945 return true;
2946
2947 BFD_ASSERT (!elf_flags_init (obfd)
2948 || (elf_elfheader (obfd)->e_flags
2949 == elf_elfheader (ibfd)->e_flags));
2950
2951 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
2952 elf_flags_init (obfd) = true;
2953 return true;
2954 }
2955
2956 /* Merge backend specific data from an object file to the output
2957 object file when linking. */
2958
2959 static boolean
2960 sparc64_elf_merge_private_bfd_data (ibfd, obfd)
2961 bfd *ibfd;
2962 bfd *obfd;
2963 {
2964 boolean error;
2965 flagword new_flags, old_flags;
2966 int new_mm, old_mm;
2967
2968 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2969 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2970 return true;
2971
2972 new_flags = elf_elfheader (ibfd)->e_flags;
2973 old_flags = elf_elfheader (obfd)->e_flags;
2974
2975 if (!elf_flags_init (obfd)) /* First call, no flags set */
2976 {
2977 elf_flags_init (obfd) = true;
2978 elf_elfheader (obfd)->e_flags = new_flags;
2979 }
2980
2981 else if (new_flags == old_flags) /* Compatible flags are ok */
2982 ;
2983
2984 else /* Incompatible flags */
2985 {
2986 error = false;
2987
2988 #define EF_SPARC_ISA_EXTENSIONS \
2989 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
2990
2991 if ((ibfd->flags & DYNAMIC) != 0)
2992 {
2993 /* We don't want dynamic objects memory ordering and
2994 architecture to have any role. That's what dynamic linker
2995 should do. */
2996 new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS);
2997 new_flags |= (old_flags
2998 & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS));
2999 }
3000 else
3001 {
3002 /* Choose the highest architecture requirements. */
3003 old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS);
3004 new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS);
3005 if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3))
3006 && (old_flags & EF_SPARC_HAL_R1))
3007 {
3008 error = true;
3009 (*_bfd_error_handler)
3010 (_("%s: linking UltraSPARC specific with HAL specific code"),
3011 bfd_archive_filename (ibfd));
3012 }
3013 /* Choose the most restrictive memory ordering. */
3014 old_mm = (old_flags & EF_SPARCV9_MM);
3015 new_mm = (new_flags & EF_SPARCV9_MM);
3016 old_flags &= ~EF_SPARCV9_MM;
3017 new_flags &= ~EF_SPARCV9_MM;
3018 if (new_mm < old_mm)
3019 old_mm = new_mm;
3020 old_flags |= old_mm;
3021 new_flags |= old_mm;
3022 }
3023
3024 /* Warn about any other mismatches */
3025 if (new_flags != old_flags)
3026 {
3027 error = true;
3028 (*_bfd_error_handler)
3029 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
3030 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
3031 }
3032
3033 elf_elfheader (obfd)->e_flags = old_flags;
3034
3035 if (error)
3036 {
3037 bfd_set_error (bfd_error_bad_value);
3038 return false;
3039 }
3040 }
3041 return true;
3042 }
3043 \f
3044 /* Print a STT_REGISTER symbol to file FILE. */
3045
3046 static const char *
3047 sparc64_elf_print_symbol_all (abfd, filep, symbol)
3048 bfd *abfd ATTRIBUTE_UNUSED;
3049 PTR filep;
3050 asymbol *symbol;
3051 {
3052 FILE *file = (FILE *) filep;
3053 int reg, type;
3054
3055 if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info)
3056 != STT_REGISTER)
3057 return NULL;
3058
3059 reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
3060 type = symbol->flags;
3061 fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "",
3062 ((type & BSF_LOCAL)
3063 ? (type & BSF_GLOBAL) ? '!' : 'l'
3064 : (type & BSF_GLOBAL) ? 'g' : ' '),
3065 (type & BSF_WEAK) ? 'w' : ' ');
3066 if (symbol->name == NULL || symbol->name [0] == '\0')
3067 return "#scratch";
3068 else
3069 return symbol->name;
3070 }
3071 \f
3072 /* Set the right machine number for a SPARC64 ELF file. */
3073
3074 static boolean
3075 sparc64_elf_object_p (abfd)
3076 bfd *abfd;
3077 {
3078 unsigned long mach = bfd_mach_sparc_v9;
3079
3080 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
3081 mach = bfd_mach_sparc_v9b;
3082 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
3083 mach = bfd_mach_sparc_v9a;
3084 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
3085 }
3086
3087 /* Relocations in the 64 bit SPARC ELF ABI are more complex than in
3088 standard ELF, because R_SPARC_OLO10 has secondary addend in
3089 ELF64_R_TYPE_DATA field. This structure is used to redirect the
3090 relocation handling routines. */
3091
3092 const struct elf_size_info sparc64_elf_size_info =
3093 {
3094 sizeof (Elf64_External_Ehdr),
3095 sizeof (Elf64_External_Phdr),
3096 sizeof (Elf64_External_Shdr),
3097 sizeof (Elf64_External_Rel),
3098 sizeof (Elf64_External_Rela),
3099 sizeof (Elf64_External_Sym),
3100 sizeof (Elf64_External_Dyn),
3101 sizeof (Elf_External_Note),
3102 4, /* hash-table entry size */
3103 /* internal relocations per external relocations.
3104 For link purposes we use just 1 internal per
3105 1 external, for assembly and slurp symbol table
3106 we use 2. */
3107 1,
3108 64, /* arch_size */
3109 8, /* file_align */
3110 ELFCLASS64,
3111 EV_CURRENT,
3112 bfd_elf64_write_out_phdrs,
3113 bfd_elf64_write_shdrs_and_ehdr,
3114 sparc64_elf_write_relocs,
3115 bfd_elf64_swap_symbol_out,
3116 sparc64_elf_slurp_reloc_table,
3117 bfd_elf64_slurp_symbol_table,
3118 bfd_elf64_swap_dyn_in,
3119 bfd_elf64_swap_dyn_out,
3120 NULL,
3121 NULL,
3122 NULL,
3123 NULL
3124 };
3125
3126 #define TARGET_BIG_SYM bfd_elf64_sparc_vec
3127 #define TARGET_BIG_NAME "elf64-sparc"
3128 #define ELF_ARCH bfd_arch_sparc
3129 #define ELF_MAXPAGESIZE 0x100000
3130
3131 /* This is the official ABI value. */
3132 #define ELF_MACHINE_CODE EM_SPARCV9
3133
3134 /* This is the value that we used before the ABI was released. */
3135 #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
3136
3137 #define bfd_elf64_bfd_link_hash_table_create \
3138 sparc64_elf_bfd_link_hash_table_create
3139
3140 #define elf_info_to_howto \
3141 sparc64_elf_info_to_howto
3142 #define bfd_elf64_get_reloc_upper_bound \
3143 sparc64_elf_get_reloc_upper_bound
3144 #define bfd_elf64_get_dynamic_reloc_upper_bound \
3145 sparc64_elf_get_dynamic_reloc_upper_bound
3146 #define bfd_elf64_canonicalize_dynamic_reloc \
3147 sparc64_elf_canonicalize_dynamic_reloc
3148 #define bfd_elf64_bfd_reloc_type_lookup \
3149 sparc64_elf_reloc_type_lookup
3150 #define bfd_elf64_bfd_relax_section \
3151 sparc64_elf_relax_section
3152
3153 #define elf_backend_create_dynamic_sections \
3154 _bfd_elf_create_dynamic_sections
3155 #define elf_backend_add_symbol_hook \
3156 sparc64_elf_add_symbol_hook
3157 #define elf_backend_get_symbol_type \
3158 sparc64_elf_get_symbol_type
3159 #define elf_backend_symbol_processing \
3160 sparc64_elf_symbol_processing
3161 #define elf_backend_check_relocs \
3162 sparc64_elf_check_relocs
3163 #define elf_backend_adjust_dynamic_symbol \
3164 sparc64_elf_adjust_dynamic_symbol
3165 #define elf_backend_size_dynamic_sections \
3166 sparc64_elf_size_dynamic_sections
3167 #define elf_backend_relocate_section \
3168 sparc64_elf_relocate_section
3169 #define elf_backend_finish_dynamic_symbol \
3170 sparc64_elf_finish_dynamic_symbol
3171 #define elf_backend_finish_dynamic_sections \
3172 sparc64_elf_finish_dynamic_sections
3173 #define elf_backend_print_symbol_all \
3174 sparc64_elf_print_symbol_all
3175 #define elf_backend_output_arch_syms \
3176 sparc64_elf_output_arch_syms
3177 #define bfd_elf64_bfd_copy_private_bfd_data \
3178 sparc64_elf_copy_private_bfd_data
3179 #define bfd_elf64_bfd_merge_private_bfd_data \
3180 sparc64_elf_merge_private_bfd_data
3181
3182 #define elf_backend_size_info \
3183 sparc64_elf_size_info
3184 #define elf_backend_object_p \
3185 sparc64_elf_object_p
3186 #define elf_backend_reloc_type_class \
3187 sparc64_elf_reloc_type_class
3188
3189 #define elf_backend_want_got_plt 0
3190 #define elf_backend_plt_readonly 0
3191 #define elf_backend_want_plt_sym 1
3192
3193 /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */
3194 #define elf_backend_plt_alignment 8
3195
3196 #define elf_backend_got_header_size 8
3197 #define elf_backend_plt_header_size PLT_HEADER_SIZE
3198
3199 #include "elf64-target.h"
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