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