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Check corrupt VTENTRY entry in bfd_elf_gc_record_vtentry
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1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2019 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* This file handles functionality common to the different SPARC ABI's. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34 #include "objalloc.h"
35 #include "hashtab.h"
36
37 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
38 #define MINUS_ONE (~ (bfd_vma) 0)
39
40 #define ABI_64_P(abfd) \
41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
42
43 /* The relocation "howto" table. */
44
45 /* Utility for performing the standard initial work of an instruction
46 relocation.
47 *PRELOCATION will contain the relocated item.
48 *PINSN will contain the instruction from the input stream.
49 If the result is `bfd_reloc_other' the caller can continue with
50 performing the relocation. Otherwise it must stop and return the
51 value to its caller. */
52
53 static bfd_reloc_status_type
54 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
55 void * data, asection *input_section, bfd *output_bfd,
56 bfd_vma *prelocation, bfd_vma *pinsn)
57 {
58 bfd_vma relocation;
59 reloc_howto_type *howto = reloc_entry->howto;
60
61 if (output_bfd != (bfd *) NULL
62 && (symbol->flags & BSF_SECTION_SYM) == 0
63 && (! howto->partial_inplace
64 || reloc_entry->addend == 0))
65 {
66 reloc_entry->address += input_section->output_offset;
67 return bfd_reloc_ok;
68 }
69
70 /* This works because partial_inplace is FALSE. */
71 if (output_bfd != NULL)
72 return bfd_reloc_continue;
73
74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
75 return bfd_reloc_outofrange;
76
77 relocation = (symbol->value
78 + symbol->section->output_section->vma
79 + symbol->section->output_offset);
80 relocation += reloc_entry->addend;
81 if (howto->pc_relative)
82 {
83 relocation -= (input_section->output_section->vma
84 + input_section->output_offset);
85 relocation -= reloc_entry->address;
86 }
87
88 *prelocation = relocation;
89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
90 return bfd_reloc_other;
91 }
92
93 /* For unsupported relocs. */
94
95 static bfd_reloc_status_type
96 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
97 arelent *reloc_entry ATTRIBUTE_UNUSED,
98 asymbol *symbol ATTRIBUTE_UNUSED,
99 void * data ATTRIBUTE_UNUSED,
100 asection *input_section ATTRIBUTE_UNUSED,
101 bfd *output_bfd ATTRIBUTE_UNUSED,
102 char **error_message ATTRIBUTE_UNUSED)
103 {
104 return bfd_reloc_notsupported;
105 }
106
107 /* Handle the WDISP16 reloc. */
108
109 static bfd_reloc_status_type
110 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
111 void * data, asection *input_section, bfd *output_bfd,
112 char **error_message ATTRIBUTE_UNUSED)
113 {
114 bfd_vma relocation;
115 bfd_vma insn;
116 bfd_reloc_status_type status;
117
118 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
119 input_section, output_bfd, &relocation, &insn);
120 if (status != bfd_reloc_other)
121 return status;
122
123 insn &= ~ (bfd_vma) 0x303fff;
124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
126
127 if ((bfd_signed_vma) relocation < - 0x40000
128 || (bfd_signed_vma) relocation > 0x3ffff)
129 return bfd_reloc_overflow;
130 else
131 return bfd_reloc_ok;
132 }
133
134 /* Handle the WDISP10 reloc. */
135
136 static bfd_reloc_status_type
137 sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 void * data, asection *input_section, bfd *output_bfd,
139 char **error_message ATTRIBUTE_UNUSED)
140 {
141 bfd_vma relocation;
142 bfd_vma insn;
143 bfd_reloc_status_type status;
144
145 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
146 input_section, output_bfd, &relocation, &insn);
147 if (status != bfd_reloc_other)
148 return status;
149
150 insn &= ~ (bfd_vma) 0x181fe0;
151 insn |= (((relocation >> 2) & 0x300) << 11)
152 | (((relocation >> 2) & 0xff) << 5);
153 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
154
155 if ((bfd_signed_vma) relocation < - 0x1000
156 || (bfd_signed_vma) relocation > 0xfff)
157 return bfd_reloc_overflow;
158 else
159 return bfd_reloc_ok;
160 }
161
162 /* Handle the HIX22 reloc. */
163
164 static bfd_reloc_status_type
165 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
166 void * data, asection *input_section, bfd *output_bfd,
167 char **error_message ATTRIBUTE_UNUSED)
168 {
169 bfd_vma relocation;
170 bfd_vma insn;
171 bfd_reloc_status_type status;
172
173 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
174 input_section, output_bfd, &relocation, &insn);
175 if (status != bfd_reloc_other)
176 return status;
177
178 relocation ^= MINUS_ONE;
179 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
180 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
181
182 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
183 return bfd_reloc_overflow;
184 else
185 return bfd_reloc_ok;
186 }
187
188 /* Handle the LOX10 reloc. */
189
190 static bfd_reloc_status_type
191 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
192 void * data, asection *input_section, bfd *output_bfd,
193 char **error_message ATTRIBUTE_UNUSED)
194 {
195 bfd_vma relocation;
196 bfd_vma insn;
197 bfd_reloc_status_type status;
198
199 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
200 input_section, output_bfd, &relocation, &insn);
201 if (status != bfd_reloc_other)
202 return status;
203
204 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
205 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
206
207 return bfd_reloc_ok;
208 }
209
210 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
211 {
212 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
213 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
214 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
215 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
216 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
217 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
218 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
219 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
220 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
221 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
223 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
224 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
225 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
226 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
227 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
228 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
229 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
230 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
231 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
232 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),
233 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),
234 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
235 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
236 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
237 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
238 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
239 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
240 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
241 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
242 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
243 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
244 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
245 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
246 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
247 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
248 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
249 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),
250 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),
251 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),
252 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
253 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
254 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),
255 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
256 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
257 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
258 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
259 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
260 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
261 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
262 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
263 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
264 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
265 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
266 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
267 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
268 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
269 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
270 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
271 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
272 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
273 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
274 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
275 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
276 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
277 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
278 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
279 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
280 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
281 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
282 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
283 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
284 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
285 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
286 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
287 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
288 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
289 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE),
290 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
291 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE),
292 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE),
293 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE),
294 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE),
295 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE),
296 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE),
297 HOWTO(R_SPARC_H34,12,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",FALSE,0,0x003fffff,FALSE),
298 HOWTO(R_SPARC_SIZE32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",FALSE,0,0xffffffff,TRUE),
299 HOWTO(R_SPARC_SIZE64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",FALSE,0,MINUS_ONE, TRUE),
300 HOWTO(R_SPARC_WDISP10,2,2,10,TRUE, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",FALSE,0,0x00000000,TRUE),
301 };
302 static reloc_howto_type sparc_jmp_irel_howto =
303 HOWTO(R_SPARC_JMP_IREL, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",FALSE,0,0x00000000,TRUE);
304 static reloc_howto_type sparc_irelative_howto =
305 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
306 static reloc_howto_type sparc_vtinherit_howto =
307 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
308 static reloc_howto_type sparc_vtentry_howto =
309 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
310 static reloc_howto_type sparc_rev32_howto =
311 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
312
313 reloc_howto_type *
314 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd,
315 bfd_reloc_code_real_type code)
316 {
317 /* We explicitly handle each relocation type in the switch
318 instead of using a lookup table for efficiency. */
319 switch (code)
320 {
321 case BFD_RELOC_NONE:
322 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
323
324 case BFD_RELOC_8:
325 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
326
327 case BFD_RELOC_16:
328 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
329
330 case BFD_RELOC_32:
331 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
332
333 case BFD_RELOC_8_PCREL:
334 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
335
336 case BFD_RELOC_16_PCREL:
337 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
338
339 case BFD_RELOC_32_PCREL:
340 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
341
342 case BFD_RELOC_32_PCREL_S2:
343 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
344
345 case BFD_RELOC_SPARC_WDISP22:
346 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
347
348 case BFD_RELOC_HI22:
349 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
350
351 case BFD_RELOC_SPARC22:
352 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
353
354 case BFD_RELOC_SPARC13:
355 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
356
357 case BFD_RELOC_LO10:
358 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
359
360 case BFD_RELOC_SPARC_GOT10:
361 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
362
363 case BFD_RELOC_SPARC_GOT13:
364 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
365
366 case BFD_RELOC_SPARC_GOT22:
367 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
368
369 case BFD_RELOC_SPARC_PC10:
370 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
371
372 case BFD_RELOC_SPARC_PC22:
373 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
374
375 case BFD_RELOC_SPARC_WPLT30:
376 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
377
378 case BFD_RELOC_SPARC_COPY:
379 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
380
381 case BFD_RELOC_SPARC_GLOB_DAT:
382 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
383
384 case BFD_RELOC_SPARC_JMP_SLOT:
385 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
386
387 case BFD_RELOC_SPARC_RELATIVE:
388 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
389
390 case BFD_RELOC_SPARC_UA32:
391 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
392
393 case BFD_RELOC_SPARC_PLT32:
394 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
395
396 case BFD_RELOC_SPARC_10:
397 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
398
399 case BFD_RELOC_SPARC_11:
400 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
401
402 case BFD_RELOC_SPARC_64:
403 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
404
405 case BFD_RELOC_SPARC_OLO10:
406 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
407
408 case BFD_RELOC_SPARC_HH22:
409 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
410
411 case BFD_RELOC_SPARC_HM10:
412 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
413
414 case BFD_RELOC_SPARC_LM22:
415 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
416
417 case BFD_RELOC_SPARC_PC_HH22:
418 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
419
420 case BFD_RELOC_SPARC_PC_HM10:
421 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
422
423 case BFD_RELOC_SPARC_PC_LM22:
424 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
425
426 case BFD_RELOC_SPARC_WDISP16:
427 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
428
429 case BFD_RELOC_SPARC_WDISP19:
430 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
431
432 case BFD_RELOC_SPARC_7:
433 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
434
435 case BFD_RELOC_SPARC_5:
436 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
437
438 case BFD_RELOC_SPARC_6:
439 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
440
441 case BFD_RELOC_SPARC_DISP64:
442 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
443
444 case BFD_RELOC_SPARC_PLT64:
445 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
446
447 case BFD_RELOC_SPARC_HIX22:
448 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
449
450 case BFD_RELOC_SPARC_LOX10:
451 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
452
453 case BFD_RELOC_SPARC_H44:
454 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
455
456 case BFD_RELOC_SPARC_M44:
457 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
458
459 case BFD_RELOC_SPARC_L44:
460 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
461
462 case BFD_RELOC_SPARC_REGISTER:
463 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
464
465 case BFD_RELOC_SPARC_UA64:
466 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
467
468 case BFD_RELOC_SPARC_UA16:
469 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
470
471 case BFD_RELOC_SPARC_TLS_GD_HI22:
472 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
473
474 case BFD_RELOC_SPARC_TLS_GD_LO10:
475 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
476
477 case BFD_RELOC_SPARC_TLS_GD_ADD:
478 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
479
480 case BFD_RELOC_SPARC_TLS_GD_CALL:
481 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
482
483 case BFD_RELOC_SPARC_TLS_LDM_HI22:
484 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
485
486 case BFD_RELOC_SPARC_TLS_LDM_LO10:
487 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
488
489 case BFD_RELOC_SPARC_TLS_LDM_ADD:
490 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
491
492 case BFD_RELOC_SPARC_TLS_LDM_CALL:
493 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
494
495 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
496 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
497
498 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
499 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
500
501 case BFD_RELOC_SPARC_TLS_LDO_ADD:
502 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
503
504 case BFD_RELOC_SPARC_TLS_IE_HI22:
505 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
506
507 case BFD_RELOC_SPARC_TLS_IE_LO10:
508 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
509
510 case BFD_RELOC_SPARC_TLS_IE_LD:
511 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
512
513 case BFD_RELOC_SPARC_TLS_IE_LDX:
514 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
515
516 case BFD_RELOC_SPARC_TLS_IE_ADD:
517 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
518
519 case BFD_RELOC_SPARC_TLS_LE_HIX22:
520 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
521
522 case BFD_RELOC_SPARC_TLS_LE_LOX10:
523 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
524
525 case BFD_RELOC_SPARC_TLS_DTPMOD32:
526 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
527
528 case BFD_RELOC_SPARC_TLS_DTPMOD64:
529 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
530
531 case BFD_RELOC_SPARC_TLS_DTPOFF32:
532 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
533
534 case BFD_RELOC_SPARC_TLS_DTPOFF64:
535 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
536
537 case BFD_RELOC_SPARC_TLS_TPOFF32:
538 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
539
540 case BFD_RELOC_SPARC_TLS_TPOFF64:
541 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
542
543 case BFD_RELOC_SPARC_GOTDATA_HIX22:
544 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
545
546 case BFD_RELOC_SPARC_GOTDATA_LOX10:
547 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
548
549 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
550 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
551
552 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
553 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
554
555 case BFD_RELOC_SPARC_GOTDATA_OP:
556 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
557
558 case BFD_RELOC_SPARC_H34:
559 return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
560
561 case BFD_RELOC_SPARC_SIZE32:
562 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
563
564 case BFD_RELOC_SPARC_SIZE64:
565 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
566
567 case BFD_RELOC_SPARC_WDISP10:
568 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
569
570 case BFD_RELOC_SPARC_JMP_IREL:
571 return &sparc_jmp_irel_howto;
572
573 case BFD_RELOC_SPARC_IRELATIVE:
574 return &sparc_irelative_howto;
575
576 case BFD_RELOC_VTABLE_INHERIT:
577 return &sparc_vtinherit_howto;
578
579 case BFD_RELOC_VTABLE_ENTRY:
580 return &sparc_vtentry_howto;
581
582 case BFD_RELOC_SPARC_REV32:
583 return &sparc_rev32_howto;
584
585 default:
586 break;
587 }
588 /* xgettext:c-format */
589 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
590 bfd_set_error (bfd_error_bad_value);
591 return NULL;
592 }
593
594 reloc_howto_type *
595 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
596 const char *r_name)
597 {
598 unsigned int i;
599
600 for (i = 0; i < ARRAY_SIZE (_bfd_sparc_elf_howto_table); i++)
601 if (_bfd_sparc_elf_howto_table[i].name != NULL
602 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
603 return &_bfd_sparc_elf_howto_table[i];
604
605 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
606 return &sparc_vtinherit_howto;
607 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
608 return &sparc_vtentry_howto;
609 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
610 return &sparc_rev32_howto;
611
612 return NULL;
613 }
614
615 reloc_howto_type *
616 _bfd_sparc_elf_info_to_howto_ptr (bfd *abfd ATTRIBUTE_UNUSED,
617 unsigned int r_type)
618 {
619 switch (r_type)
620 {
621 case R_SPARC_JMP_IREL:
622 return &sparc_jmp_irel_howto;
623
624 case R_SPARC_IRELATIVE:
625 return &sparc_irelative_howto;
626
627 case R_SPARC_GNU_VTINHERIT:
628 return &sparc_vtinherit_howto;
629
630 case R_SPARC_GNU_VTENTRY:
631 return &sparc_vtentry_howto;
632
633 case R_SPARC_REV32:
634 return &sparc_rev32_howto;
635
636 default:
637 if (r_type >= (unsigned int) R_SPARC_max_std)
638 {
639 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
640 abfd, r_type);
641 bfd_set_error (bfd_error_bad_value);
642 return NULL;
643 }
644 return &_bfd_sparc_elf_howto_table[r_type];
645 }
646 }
647
648 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
649 so just take advantage of that. */
650 #define SPARC_ELF_R_TYPE(r_info) \
651 ((r_info) & 0xff)
652
653 bfd_boolean
654 _bfd_sparc_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
655 Elf_Internal_Rela *dst)
656 {
657 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
658
659 if ((cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (abfd, r_type)) == NULL)
660 {
661 bfd_set_error (bfd_error_bad_value);
662 return FALSE;
663 }
664 return TRUE;
665 }
666 \f
667
668 /* The nop opcode we use. */
669 #define SPARC_NOP 0x01000000
670
671 #define SPARC_INSN_BYTES 4
672
673 /* Is an undefined weak symbol resolved to 0 ?
674 Reference to an undefined weak symbol is resolved to 0 when
675 building an executable if it isn't dynamic and
676 1. Has non-GOT/non-PLT relocations in text section.
677 Or
678 2. Has no GOT/PLT relocation. */
679 #define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
680 ((EH)->elf.root.type == bfd_link_hash_undefweak \
681 && bfd_link_executable (INFO) \
682 && (_bfd_sparc_elf_hash_table (INFO)->interp == NULL \
683 || !(INFO)->dynamic_undefined_weak \
684 || (EH)->has_non_got_reloc \
685 || !(EH)->has_got_reloc))
686
687 /* SPARC ELF linker hash entry. */
688
689 struct _bfd_sparc_elf_link_hash_entry
690 {
691 struct elf_link_hash_entry elf;
692
693 /* Track dynamic relocs copied for this symbol. */
694 struct elf_dyn_relocs *dyn_relocs;
695
696 #define GOT_UNKNOWN 0
697 #define GOT_NORMAL 1
698 #define GOT_TLS_GD 2
699 #define GOT_TLS_IE 3
700 unsigned char tls_type;
701
702 /* Symbol has GOT or PLT relocations. */
703 unsigned int has_got_reloc : 1;
704
705 /* Symbol has old-style, non-relaxable GOT relocations. */
706 unsigned int has_old_style_got_reloc : 1;
707
708 /* Symbol has non-GOT/non-PLT relocations in text sections. */
709 unsigned int has_non_got_reloc : 1;
710
711 };
712
713 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
714
715 struct _bfd_sparc_elf_obj_tdata
716 {
717 struct elf_obj_tdata root;
718
719 /* tls_type for each local got entry. */
720 char *local_got_tls_type;
721
722 /* TRUE if TLS GD relocs has been seen for this object. */
723 bfd_boolean has_tlsgd;
724 };
725
726 #define _bfd_sparc_elf_tdata(abfd) \
727 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
728
729 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
730 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
731
732 #define is_sparc_elf(bfd) \
733 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
734 && elf_tdata (bfd) != NULL \
735 && elf_object_id (bfd) == SPARC_ELF_DATA)
736
737 bfd_boolean
738 _bfd_sparc_elf_mkobject (bfd *abfd)
739 {
740 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
741 SPARC_ELF_DATA);
742 }
743
744 static void
745 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
746 {
747 bfd_put_32 (abfd, val, ptr);
748 }
749
750 static void
751 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
752 {
753 bfd_put_64 (abfd, val, ptr);
754 }
755
756 static void
757 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
758 {
759 const struct elf_backend_data *bed;
760 bfd_byte *loc;
761
762 bed = get_elf_backend_data (abfd);
763 BFD_ASSERT (s->reloc_count * bed->s->sizeof_rela < s->size);
764 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
765 bed->s->swap_reloca_out (abfd, rel, loc);
766 }
767
768 static bfd_vma
769 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
770 bfd_vma rel_index ATTRIBUTE_UNUSED,
771 bfd_vma type ATTRIBUTE_UNUSED)
772 {
773 return ELF64_R_INFO (rel_index,
774 (in_rel ?
775 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
776 type) : type));
777 }
778
779 static bfd_vma
780 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
781 bfd_vma rel_index, bfd_vma type)
782 {
783 return ELF32_R_INFO (rel_index, type);
784 }
785
786 static bfd_vma
787 sparc_elf_r_symndx_64 (bfd_vma r_info)
788 {
789 bfd_vma r_symndx = ELF32_R_SYM (r_info);
790 return (r_symndx >> 24);
791 }
792
793 static bfd_vma
794 sparc_elf_r_symndx_32 (bfd_vma r_info)
795 {
796 return ELF32_R_SYM (r_info);
797 }
798
799 /* PLT/GOT stuff */
800
801 #define PLT32_ENTRY_SIZE 12
802 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
803
804 /* The first four entries in a 32-bit procedure linkage table are reserved,
805 and the initial contents are unimportant (we zero them out).
806 Subsequent entries look like this. See the SVR4 ABI SPARC
807 supplement to see how this works. */
808
809 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
810 #define PLT32_ENTRY_WORD0 0x03000000
811 /* b,a .plt0. We fill in the offset later. */
812 #define PLT32_ENTRY_WORD1 0x30800000
813 /* nop. */
814 #define PLT32_ENTRY_WORD2 SPARC_NOP
815
816 static int
817 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
818 bfd_vma max ATTRIBUTE_UNUSED,
819 bfd_vma *r_offset)
820 {
821 bfd_put_32 (output_bfd,
822 PLT32_ENTRY_WORD0 + offset,
823 splt->contents + offset);
824 bfd_put_32 (output_bfd,
825 (PLT32_ENTRY_WORD1
826 + (((- (offset + 4)) >> 2) & 0x3fffff)),
827 splt->contents + offset + 4);
828 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
829 splt->contents + offset + 8);
830
831 *r_offset = offset;
832
833 return offset / PLT32_ENTRY_SIZE - 4;
834 }
835
836 /* Both the headers and the entries are icache aligned. */
837 #define PLT64_ENTRY_SIZE 32
838 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
839 #define PLT64_LARGE_THRESHOLD 32768
840
841 static int
842 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
843 bfd_vma max, bfd_vma *r_offset)
844 {
845 unsigned char *entry = splt->contents + offset;
846 const unsigned int nop = SPARC_NOP;
847 int plt_index;
848
849 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
850 {
851 unsigned int sethi, ba;
852
853 *r_offset = offset;
854
855 plt_index = (offset / PLT64_ENTRY_SIZE);
856
857 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
858 ba = 0x30680000
859 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
860
861 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
862 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
863 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
864 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
865 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
866 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
867 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
868 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
869 }
870 else
871 {
872 unsigned char *ptr;
873 unsigned int ldx;
874 int block, last_block, ofs, last_ofs, chunks_this_block;
875 const int insn_chunk_size = (6 * 4);
876 const int ptr_chunk_size = (1 * 8);
877 const int entries_per_block = 160;
878 const int block_size = entries_per_block * (insn_chunk_size
879 + ptr_chunk_size);
880
881 /* Entries 32768 and higher are grouped into blocks of 160.
882 The blocks are further subdivided into 160 sequences of
883 6 instructions and 160 pointers. If a block does not require
884 the full 160 entries, let's say it requires N, then there
885 will be N sequences of 6 instructions and N pointers. */
886
887 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
888 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
889
890 block = offset / block_size;
891 last_block = max / block_size;
892 if (block != last_block)
893 {
894 chunks_this_block = 160;
895 }
896 else
897 {
898 last_ofs = max % block_size;
899 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
900 }
901
902 ofs = offset % block_size;
903
904 plt_index = (PLT64_LARGE_THRESHOLD +
905 (block * 160) +
906 (ofs / insn_chunk_size));
907
908 ptr = splt->contents
909 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
910 + (block * block_size)
911 + (chunks_this_block * insn_chunk_size)
912 + (ofs / insn_chunk_size) * ptr_chunk_size;
913
914 *r_offset = (bfd_vma) (ptr - splt->contents);
915
916 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
917
918 /* mov %o7,%g5
919 call .+8
920 nop
921 ldx [%o7+P],%g1
922 jmpl %o7+%g1,%g1
923 mov %g5,%o7 */
924 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
925 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
926 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
927 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
928 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
929 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
930
931 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
932 }
933
934 return plt_index - 4;
935 }
936
937 /* The format of the first PLT entry in a VxWorks executable. */
938 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
939 {
940 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
941 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
942 0xc4008000, /* ld [ %g2 ], %g2 */
943 0x81c08000, /* jmp %g2 */
944 0x01000000 /* nop */
945 };
946
947 /* The format of subsequent PLT entries. */
948 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
949 {
950 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
951 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
952 0xc2004000, /* ld [ %g1 ], %g1 */
953 0x81c04000, /* jmp %g1 */
954 0x01000000, /* nop */
955 0x03000000, /* sethi %hi(f@pltindex), %g1 */
956 0x10800000, /* b _PLT_resolve */
957 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
958 };
959
960 /* The format of the first PLT entry in a VxWorks shared object. */
961 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
962 {
963 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
964 0x81c08000, /* jmp %g2 */
965 0x01000000 /* nop */
966 };
967
968 /* The format of subsequent PLT entries. */
969 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
970 {
971 0x03000000, /* sethi %hi(f@got), %g1 */
972 0x82106000, /* or %g1, %lo(f@got), %g1 */
973 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
974 0x81c04000, /* jmp %g1 */
975 0x01000000, /* nop */
976 0x03000000, /* sethi %hi(f@pltindex), %g1 */
977 0x10800000, /* b _PLT_resolve */
978 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
979 };
980
981 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
982 htab->put_word(bfd, val, ptr)
983
984 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
985 htab->r_info(in_rel, index, type)
986
987 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
988 htab->r_symndx(r_info)
989
990 #define SPARC_ELF_WORD_BYTES(htab) \
991 htab->bytes_per_word
992
993 #define SPARC_ELF_RELA_BYTES(htab) \
994 htab->bytes_per_rela
995
996 #define SPARC_ELF_DTPOFF_RELOC(htab) \
997 htab->dtpoff_reloc
998
999 #define SPARC_ELF_DTPMOD_RELOC(htab) \
1000 htab->dtpmod_reloc
1001
1002 #define SPARC_ELF_TPOFF_RELOC(htab) \
1003 htab->tpoff_reloc
1004
1005 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
1006 htab->build_plt_entry (obfd, splt, off, max, r_off)
1007
1008 /* Create an entry in an SPARC ELF linker hash table. */
1009
1010 static struct bfd_hash_entry *
1011 link_hash_newfunc (struct bfd_hash_entry *entry,
1012 struct bfd_hash_table *table, const char *string)
1013 {
1014 /* Allocate the structure if it has not already been allocated by a
1015 subclass. */
1016 if (entry == NULL)
1017 {
1018 entry = bfd_hash_allocate (table,
1019 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1020 if (entry == NULL)
1021 return entry;
1022 }
1023
1024 /* Call the allocation method of the superclass. */
1025 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1026 if (entry != NULL)
1027 {
1028 struct _bfd_sparc_elf_link_hash_entry *eh;
1029
1030 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1031 eh->dyn_relocs = NULL;
1032 eh->tls_type = GOT_UNKNOWN;
1033 eh->has_got_reloc = 0;
1034 eh->has_non_got_reloc = 0;
1035 }
1036
1037 return entry;
1038 }
1039
1040 /* The name of the dynamic interpreter. This is put in the .interp
1041 section. */
1042
1043 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1044 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1045
1046 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1047 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1048 as global symbol. We reuse indx and dynstr_index for local symbol
1049 hash since they aren't used by global symbols in this backend. */
1050
1051 static hashval_t
1052 elf_sparc_local_htab_hash (const void *ptr)
1053 {
1054 struct elf_link_hash_entry *h
1055 = (struct elf_link_hash_entry *) ptr;
1056 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1057 }
1058
1059 /* Compare local hash entries. */
1060
1061 static int
1062 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1063 {
1064 struct elf_link_hash_entry *h1
1065 = (struct elf_link_hash_entry *) ptr1;
1066 struct elf_link_hash_entry *h2
1067 = (struct elf_link_hash_entry *) ptr2;
1068
1069 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1070 }
1071
1072 /* Find and/or create a hash entry for local symbol. */
1073
1074 static struct elf_link_hash_entry *
1075 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1076 bfd *abfd, const Elf_Internal_Rela *rel,
1077 bfd_boolean create)
1078 {
1079 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1080 asection *sec = abfd->sections;
1081 unsigned long r_symndx;
1082 hashval_t h;
1083 void **slot;
1084
1085 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1086 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1087
1088 e.elf.indx = sec->id;
1089 e.elf.dynstr_index = r_symndx;
1090 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1091 create ? INSERT : NO_INSERT);
1092
1093 if (!slot)
1094 return NULL;
1095
1096 if (*slot)
1097 {
1098 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1099 return &ret->elf;
1100 }
1101
1102 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1103 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1104 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1105 if (ret)
1106 {
1107 memset (ret, 0, sizeof (*ret));
1108 ret->elf.indx = sec->id;
1109 ret->elf.dynstr_index = r_symndx;
1110 ret->elf.dynindx = -1;
1111 ret->elf.plt.offset = (bfd_vma) -1;
1112 ret->elf.got.offset = (bfd_vma) -1;
1113 *slot = ret;
1114 }
1115 return &ret->elf;
1116 }
1117
1118 /* Destroy a SPARC ELF linker hash table. */
1119
1120 static void
1121 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1122 {
1123 struct _bfd_sparc_elf_link_hash_table *htab
1124 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1125
1126 if (htab->loc_hash_table)
1127 htab_delete (htab->loc_hash_table);
1128 if (htab->loc_hash_memory)
1129 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1130 _bfd_elf_link_hash_table_free (obfd);
1131 }
1132
1133 /* Create a SPARC ELF linker hash table. */
1134
1135 struct bfd_link_hash_table *
1136 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1137 {
1138 struct _bfd_sparc_elf_link_hash_table *ret;
1139 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1140
1141 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1142 if (ret == NULL)
1143 return NULL;
1144
1145 if (ABI_64_P (abfd))
1146 {
1147 ret->put_word = sparc_put_word_64;
1148 ret->r_info = sparc_elf_r_info_64;
1149 ret->r_symndx = sparc_elf_r_symndx_64;
1150 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1151 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1152 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1153 ret->word_align_power = 3;
1154 ret->align_power_max = 4;
1155 ret->bytes_per_word = 8;
1156 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1157 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1158 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1159
1160 ret->build_plt_entry = sparc64_plt_entry_build;
1161 ret->plt_header_size = PLT64_HEADER_SIZE;
1162 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1163 }
1164 else
1165 {
1166 ret->put_word = sparc_put_word_32;
1167 ret->r_info = sparc_elf_r_info_32;
1168 ret->r_symndx = sparc_elf_r_symndx_32;
1169 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1170 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1171 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1172 ret->word_align_power = 2;
1173 ret->align_power_max = 3;
1174 ret->bytes_per_word = 4;
1175 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1176 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1177 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1178
1179 ret->build_plt_entry = sparc32_plt_entry_build;
1180 ret->plt_header_size = PLT32_HEADER_SIZE;
1181 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1182 }
1183
1184 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1185 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1186 SPARC_ELF_DATA))
1187 {
1188 free (ret);
1189 return NULL;
1190 }
1191
1192 ret->loc_hash_table = htab_try_create (1024,
1193 elf_sparc_local_htab_hash,
1194 elf_sparc_local_htab_eq,
1195 NULL);
1196 ret->loc_hash_memory = objalloc_create ();
1197 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1198 {
1199 _bfd_sparc_elf_link_hash_table_free (abfd);
1200 return NULL;
1201 }
1202 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1203
1204 return &ret->elf.root;
1205 }
1206
1207 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1208 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1209 hash table. */
1210
1211 bfd_boolean
1212 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1213 struct bfd_link_info *info)
1214 {
1215 struct _bfd_sparc_elf_link_hash_table *htab;
1216
1217 htab = _bfd_sparc_elf_hash_table (info);
1218 BFD_ASSERT (htab != NULL);
1219
1220 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1221 return FALSE;
1222
1223 if (htab->is_vxworks)
1224 {
1225 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1226 return FALSE;
1227 if (bfd_link_pic (info))
1228 {
1229 htab->plt_header_size
1230 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1231 htab->plt_entry_size
1232 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1233 }
1234 else
1235 {
1236 htab->plt_header_size
1237 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1238 htab->plt_entry_size
1239 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1240 }
1241 }
1242
1243 if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss
1244 || (!bfd_link_pic (info) && !htab->elf.srelbss))
1245 abort ();
1246
1247 return TRUE;
1248 }
1249
1250 static bfd_boolean
1251 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1252 {
1253 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1254 struct elf_link_hash_table *htab = elf_hash_table (info);
1255 flagword flags, pltflags;
1256 asection *s;
1257
1258 if (htab->irelifunc != NULL || htab->iplt != NULL)
1259 return TRUE;
1260
1261 flags = bed->dynamic_sec_flags;
1262 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1263
1264 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1265 if (s == NULL
1266 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1267 return FALSE;
1268 htab->iplt = s;
1269
1270 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1271 flags | SEC_READONLY);
1272 if (s == NULL
1273 || ! bfd_set_section_alignment (abfd, s,
1274 bed->s->log_file_align))
1275 return FALSE;
1276 htab->irelplt = s;
1277
1278 return TRUE;
1279 }
1280
1281 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1282
1283 void
1284 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1285 struct elf_link_hash_entry *dir,
1286 struct elf_link_hash_entry *ind)
1287 {
1288 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1289
1290 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1291 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1292
1293 if (eind->dyn_relocs != NULL)
1294 {
1295 if (edir->dyn_relocs != NULL)
1296 {
1297 struct elf_dyn_relocs **pp;
1298 struct elf_dyn_relocs *p;
1299
1300 /* Add reloc counts against the indirect sym to the direct sym
1301 list. Merge any entries against the same section. */
1302 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1303 {
1304 struct elf_dyn_relocs *q;
1305
1306 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1307 if (q->sec == p->sec)
1308 {
1309 q->pc_count += p->pc_count;
1310 q->count += p->count;
1311 *pp = p->next;
1312 break;
1313 }
1314 if (q == NULL)
1315 pp = &p->next;
1316 }
1317 *pp = edir->dyn_relocs;
1318 }
1319
1320 edir->dyn_relocs = eind->dyn_relocs;
1321 eind->dyn_relocs = NULL;
1322 }
1323
1324 if (ind->root.type == bfd_link_hash_indirect && dir->got.refcount <= 0)
1325 {
1326 edir->tls_type = eind->tls_type;
1327 eind->tls_type = GOT_UNKNOWN;
1328 }
1329
1330 /* Copy has_got_reloc and has_non_got_reloc. */
1331 edir->has_got_reloc |= eind->has_got_reloc;
1332 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1333
1334 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1335 }
1336
1337 static int
1338 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1339 int r_type, int is_local)
1340 {
1341 if (! ABI_64_P (abfd)
1342 && r_type == R_SPARC_TLS_GD_HI22
1343 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1344 return R_SPARC_REV32;
1345
1346 if (!bfd_link_executable (info))
1347 return r_type;
1348
1349 switch (r_type)
1350 {
1351 case R_SPARC_TLS_GD_HI22:
1352 return is_local ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_IE_HI22;
1353 case R_SPARC_TLS_GD_LO10:
1354 return is_local ? R_SPARC_TLS_LE_LOX10 : R_SPARC_TLS_IE_LO10;
1355 case R_SPARC_TLS_LDM_HI22:
1356 return R_SPARC_TLS_LE_HIX22;
1357 case R_SPARC_TLS_LDM_LO10:
1358 return R_SPARC_TLS_LE_LOX10;
1359 case R_SPARC_TLS_IE_HI22:
1360 return is_local ? R_SPARC_TLS_LE_HIX22 : r_type;
1361 case R_SPARC_TLS_IE_LO10:
1362 return is_local ? R_SPARC_TLS_LE_LOX10 : r_type;
1363 }
1364
1365 return r_type;
1366 }
1367 \f
1368 /* Look through the relocs for a section during the first phase, and
1369 allocate space in the global offset table or procedure linkage
1370 table. */
1371
1372 bfd_boolean
1373 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1374 asection *sec, const Elf_Internal_Rela *relocs)
1375 {
1376 struct _bfd_sparc_elf_link_hash_table *htab;
1377 Elf_Internal_Shdr *symtab_hdr;
1378 struct elf_link_hash_entry **sym_hashes;
1379 const Elf_Internal_Rela *rel;
1380 const Elf_Internal_Rela *rel_end;
1381 asection *sreloc;
1382 int num_relocs;
1383 bfd_boolean checked_tlsgd = FALSE;
1384
1385 if (bfd_link_relocatable (info))
1386 return TRUE;
1387
1388 htab = _bfd_sparc_elf_hash_table (info);
1389 BFD_ASSERT (htab != NULL);
1390 symtab_hdr = &elf_symtab_hdr (abfd);
1391 sym_hashes = elf_sym_hashes (abfd);
1392
1393 sreloc = NULL;
1394
1395 if (ABI_64_P (abfd))
1396 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1397 else
1398 num_relocs = sec->reloc_count;
1399
1400 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1401
1402 if (htab->elf.dynobj == NULL)
1403 htab->elf.dynobj = abfd;
1404 if (!create_ifunc_sections (htab->elf.dynobj, info))
1405 return FALSE;
1406
1407 rel_end = relocs + num_relocs;
1408 for (rel = relocs; rel < rel_end; rel++)
1409 {
1410 unsigned int r_type;
1411 unsigned int r_symndx;
1412 struct elf_link_hash_entry *h;
1413 struct _bfd_sparc_elf_link_hash_entry *eh;
1414 Elf_Internal_Sym *isym;
1415
1416 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1417 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1418
1419 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1420 {
1421 /* xgettext:c-format */
1422 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
1423 return FALSE;
1424 }
1425
1426 isym = NULL;
1427 if (r_symndx < symtab_hdr->sh_info)
1428 {
1429 /* A local symbol. */
1430 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1431 if (isym == NULL)
1432 return FALSE;
1433
1434 /* Check relocation against local STT_GNU_IFUNC symbol. */
1435 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1436 {
1437 h = elf_sparc_get_local_sym_hash (htab, abfd, rel, TRUE);
1438 if (h == NULL)
1439 return FALSE;
1440
1441 /* Fake a STT_GNU_IFUNC symbol. */
1442 h->type = STT_GNU_IFUNC;
1443 h->def_regular = 1;
1444 h->ref_regular = 1;
1445 h->forced_local = 1;
1446 h->root.type = bfd_link_hash_defined;
1447 }
1448 else
1449 h = NULL;
1450 }
1451 else
1452 {
1453 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1454 while (h->root.type == bfd_link_hash_indirect
1455 || h->root.type == bfd_link_hash_warning)
1456 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1457 }
1458
1459 if (h && h->type == STT_GNU_IFUNC && h->def_regular)
1460 {
1461 h->ref_regular = 1;
1462 h->plt.refcount += 1;
1463 }
1464
1465 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1466 with R_SPARC_TLS_GD_HI22. */
1467 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1468 switch (r_type)
1469 {
1470 case R_SPARC_TLS_GD_HI22:
1471 {
1472 const Elf_Internal_Rela *relt;
1473
1474 for (relt = rel + 1; relt < rel_end; relt++)
1475 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1476 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1477 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1478 break;
1479 checked_tlsgd = TRUE;
1480 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1481 }
1482 break;
1483 case R_SPARC_TLS_GD_LO10:
1484 case R_SPARC_TLS_GD_ADD:
1485 case R_SPARC_TLS_GD_CALL:
1486 checked_tlsgd = TRUE;
1487 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1488 break;
1489 }
1490
1491 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1492 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1493
1494 switch (r_type)
1495 {
1496 case R_SPARC_TLS_LDM_HI22:
1497 case R_SPARC_TLS_LDM_LO10:
1498 htab->tls_ldm_got.refcount += 1;
1499 if (eh != NULL)
1500 eh->has_got_reloc = 1;
1501 break;
1502
1503 case R_SPARC_TLS_LE_HIX22:
1504 case R_SPARC_TLS_LE_LOX10:
1505 if (!bfd_link_executable (info))
1506 goto r_sparc_plt32;
1507 break;
1508
1509 case R_SPARC_TLS_IE_HI22:
1510 case R_SPARC_TLS_IE_LO10:
1511 if (!bfd_link_executable (info))
1512 info->flags |= DF_STATIC_TLS;
1513 /* Fall through */
1514
1515 case R_SPARC_GOT10:
1516 case R_SPARC_GOT13:
1517 case R_SPARC_GOT22:
1518 case R_SPARC_GOTDATA_HIX22:
1519 case R_SPARC_GOTDATA_LOX10:
1520 case R_SPARC_GOTDATA_OP_HIX22:
1521 case R_SPARC_GOTDATA_OP_LOX10:
1522 case R_SPARC_TLS_GD_HI22:
1523 case R_SPARC_TLS_GD_LO10:
1524 /* This symbol requires a global offset table entry. */
1525 {
1526 int tls_type, old_tls_type;
1527
1528 switch (r_type)
1529 {
1530 case R_SPARC_TLS_GD_HI22:
1531 case R_SPARC_TLS_GD_LO10:
1532 tls_type = GOT_TLS_GD;
1533 break;
1534 case R_SPARC_TLS_IE_HI22:
1535 case R_SPARC_TLS_IE_LO10:
1536 tls_type = GOT_TLS_IE;
1537 break;
1538 default:
1539 tls_type = GOT_NORMAL;
1540 break;
1541 }
1542
1543 if (h != NULL)
1544 {
1545 h->got.refcount += 1;
1546 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1547 }
1548 else
1549 {
1550 bfd_signed_vma *local_got_refcounts;
1551
1552 /* This is a global offset table entry for a local symbol. */
1553 local_got_refcounts = elf_local_got_refcounts (abfd);
1554 if (local_got_refcounts == NULL)
1555 {
1556 bfd_size_type size;
1557
1558 size = symtab_hdr->sh_info;
1559 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1560 local_got_refcounts = ((bfd_signed_vma *)
1561 bfd_zalloc (abfd, size));
1562 if (local_got_refcounts == NULL)
1563 return FALSE;
1564 elf_local_got_refcounts (abfd) = local_got_refcounts;
1565 _bfd_sparc_elf_local_got_tls_type (abfd)
1566 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1567 }
1568
1569 if (r_type != R_SPARC_GOTDATA_OP_HIX22
1570 && r_type != R_SPARC_GOTDATA_OP_LOX10)
1571 local_got_refcounts[r_symndx] += 1;
1572
1573 old_tls_type
1574 = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1575 }
1576
1577 /* If a TLS symbol is accessed using IE at least once, there is no
1578 point in using the dynamic model for it. */
1579 if (old_tls_type != tls_type)
1580 {
1581 if (old_tls_type == GOT_UNKNOWN)
1582 ;
1583 else if (old_tls_type == GOT_TLS_GD && tls_type == GOT_TLS_IE)
1584 ;
1585 else if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1586 tls_type = old_tls_type;
1587 else
1588 {
1589 _bfd_error_handler
1590 /* xgettext:c-format */
1591 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1592 abfd, h ? h->root.root.string : "<local>");
1593 return FALSE;
1594 }
1595
1596 if (h != NULL)
1597 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1598 else
1599 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1600 }
1601 }
1602
1603 if (!htab->elf.sgot
1604 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
1605 return FALSE;
1606
1607 if (eh != NULL)
1608 {
1609 eh->has_got_reloc = 1;
1610 if (r_type == R_SPARC_GOT10
1611 || r_type == R_SPARC_GOT13
1612 || r_type == R_SPARC_GOT22)
1613 eh->has_old_style_got_reloc = 1;
1614 }
1615 break;
1616
1617 case R_SPARC_TLS_GD_CALL:
1618 case R_SPARC_TLS_LDM_CALL:
1619 if (bfd_link_executable (info))
1620 break;
1621
1622 /* Essentially R_SPARC_WPLT30 relocs against __tls_get_addr. */
1623 h = (struct elf_link_hash_entry *)
1624 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
1625 FALSE, TRUE);
1626 BFD_ASSERT (h != NULL);
1627 /* Fall through */
1628
1629 case R_SPARC_WPLT30:
1630 case R_SPARC_PLT32:
1631 case R_SPARC_PLT64:
1632 case R_SPARC_HIPLT22:
1633 case R_SPARC_LOPLT10:
1634 case R_SPARC_PCPLT32:
1635 case R_SPARC_PCPLT22:
1636 case R_SPARC_PCPLT10:
1637 /* This symbol requires a procedure linkage table entry.
1638 We actually build the entry in adjust_dynamic_symbol,
1639 because this might be a case of linking PIC code without
1640 linking in any dynamic objects, in which case we don't
1641 need to generate a procedure linkage table after all. */
1642
1643 if (h == NULL)
1644 {
1645 if (! ABI_64_P (abfd))
1646 {
1647 /* The Solaris native assembler will generate a WPLT30
1648 reloc for a local symbol if you assemble a call from
1649 one section to another when using -K pic. We treat
1650 it as WDISP30. */
1651 if (r_type == R_SPARC_PLT32)
1652 goto r_sparc_plt32;
1653 break;
1654 }
1655 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1656 else if (r_type == R_SPARC_WPLT30)
1657 break;
1658
1659 /* It does not make sense to have a procedure linkage
1660 table entry for a local symbol. */
1661 bfd_set_error (bfd_error_bad_value);
1662 return FALSE;
1663 }
1664
1665 h->needs_plt = 1;
1666
1667 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
1668 goto r_sparc_plt32;
1669
1670 h->plt.refcount += 1;
1671
1672 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1673 eh->has_got_reloc = 1;
1674 break;
1675
1676 case R_SPARC_PC10:
1677 case R_SPARC_PC22:
1678 case R_SPARC_PC_HH22:
1679 case R_SPARC_PC_HM10:
1680 case R_SPARC_PC_LM22:
1681 if (h != NULL)
1682 h->non_got_ref = 1;
1683
1684 if (h != NULL
1685 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1686 break;
1687 /* Fall through. */
1688
1689 case R_SPARC_DISP8:
1690 case R_SPARC_DISP16:
1691 case R_SPARC_DISP32:
1692 case R_SPARC_DISP64:
1693 case R_SPARC_WDISP30:
1694 case R_SPARC_WDISP22:
1695 case R_SPARC_WDISP19:
1696 case R_SPARC_WDISP16:
1697 case R_SPARC_WDISP10:
1698 case R_SPARC_8:
1699 case R_SPARC_16:
1700 case R_SPARC_32:
1701 case R_SPARC_HI22:
1702 case R_SPARC_22:
1703 case R_SPARC_13:
1704 case R_SPARC_LO10:
1705 case R_SPARC_UA16:
1706 case R_SPARC_UA32:
1707 case R_SPARC_10:
1708 case R_SPARC_11:
1709 case R_SPARC_64:
1710 case R_SPARC_OLO10:
1711 case R_SPARC_HH22:
1712 case R_SPARC_HM10:
1713 case R_SPARC_LM22:
1714 case R_SPARC_7:
1715 case R_SPARC_5:
1716 case R_SPARC_6:
1717 case R_SPARC_HIX22:
1718 case R_SPARC_LOX10:
1719 case R_SPARC_H44:
1720 case R_SPARC_M44:
1721 case R_SPARC_L44:
1722 case R_SPARC_H34:
1723 case R_SPARC_UA64:
1724 if (h != NULL)
1725 h->non_got_ref = 1;
1726
1727 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
1728 eh->has_non_got_reloc = 1;
1729
1730 r_sparc_plt32:
1731 if (h != NULL && !bfd_link_pic (info))
1732 {
1733 /* We may need a .plt entry if the function this reloc
1734 refers to is in a shared lib. */
1735 h->plt.refcount += 1;
1736 }
1737
1738 /* If we are creating a shared library, and this is a reloc
1739 against a global symbol, or a non PC relative reloc
1740 against a local symbol, then we need to copy the reloc
1741 into the shared library. However, if we are linking with
1742 -Bsymbolic, we do not need to copy a reloc against a
1743 global symbol which is defined in an object we are
1744 including in the link (i.e., DEF_REGULAR is set). At
1745 this point we have not seen all the input files, so it is
1746 possible that DEF_REGULAR is not set now but will be set
1747 later (it is never cleared). In case of a weak definition,
1748 DEF_REGULAR may be cleared later by a strong definition in
1749 a shared library. We account for that possibility below by
1750 storing information in the relocs_copied field of the hash
1751 table entry. A similar situation occurs when creating
1752 shared libraries and symbol visibility changes render the
1753 symbol local.
1754
1755 If on the other hand, we are creating an executable, we
1756 may need to keep relocations for symbols satisfied by a
1757 dynamic library if we manage to avoid copy relocs for the
1758 symbol. */
1759 if ((bfd_link_pic (info)
1760 && (sec->flags & SEC_ALLOC) != 0
1761 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1762 || (h != NULL
1763 && (! SYMBOLIC_BIND (info, h)
1764 || h->root.type == bfd_link_hash_defweak
1765 || !h->def_regular))))
1766 || (!bfd_link_pic (info)
1767 && (sec->flags & SEC_ALLOC) != 0
1768 && h != NULL
1769 && (h->root.type == bfd_link_hash_defweak
1770 || !h->def_regular))
1771 || (!bfd_link_pic (info)
1772 && h != NULL
1773 && h->type == STT_GNU_IFUNC))
1774 {
1775 struct elf_dyn_relocs *p;
1776 struct elf_dyn_relocs **head;
1777
1778 /* When creating a shared object, we must copy these
1779 relocs into the output file. We create a reloc
1780 section in dynobj and make room for the reloc. */
1781 if (sreloc == NULL)
1782 {
1783 sreloc = _bfd_elf_make_dynamic_reloc_section
1784 (sec, htab->elf.dynobj, htab->word_align_power,
1785 abfd, /*rela?*/ TRUE);
1786
1787 if (sreloc == NULL)
1788 return FALSE;
1789 }
1790
1791 /* If this is a global symbol, we count the number of
1792 relocations we need for this symbol. */
1793 if (h != NULL)
1794 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1795 else
1796 {
1797 /* Track dynamic relocs needed for local syms too.
1798 We really need local syms available to do this
1799 easily. Oh well. */
1800 asection *s;
1801 void *vpp;
1802
1803 BFD_ASSERT (isym != NULL);
1804 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1805 if (s == NULL)
1806 s = sec;
1807
1808 vpp = &elf_section_data (s)->local_dynrel;
1809 head = (struct elf_dyn_relocs **) vpp;
1810 }
1811
1812 p = *head;
1813 if (p == NULL || p->sec != sec)
1814 {
1815 bfd_size_type amt = sizeof *p;
1816 p = ((struct elf_dyn_relocs *)
1817 bfd_alloc (htab->elf.dynobj, amt));
1818 if (p == NULL)
1819 return FALSE;
1820 p->next = *head;
1821 *head = p;
1822 p->sec = sec;
1823 p->count = 0;
1824 p->pc_count = 0;
1825 }
1826
1827 p->count += 1;
1828 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1829 p->pc_count += 1;
1830 }
1831
1832 break;
1833
1834 case R_SPARC_GNU_VTINHERIT:
1835 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1836 return FALSE;
1837 break;
1838
1839 case R_SPARC_GNU_VTENTRY:
1840 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1841 return FALSE;
1842 break;
1843
1844 case R_SPARC_REGISTER:
1845 /* Nothing to do. */
1846 break;
1847
1848 default:
1849 break;
1850 }
1851 }
1852
1853 return TRUE;
1854 }
1855 \f
1856 asection *
1857 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1858 struct bfd_link_info *info,
1859 Elf_Internal_Rela *rel,
1860 struct elf_link_hash_entry *h,
1861 Elf_Internal_Sym *sym)
1862 {
1863 if (h != NULL)
1864 switch (SPARC_ELF_R_TYPE (rel->r_info))
1865 {
1866 case R_SPARC_GNU_VTINHERIT:
1867 case R_SPARC_GNU_VTENTRY:
1868 return NULL;
1869 }
1870
1871 if (!bfd_link_executable (info))
1872 {
1873 switch (SPARC_ELF_R_TYPE (rel->r_info))
1874 {
1875 case R_SPARC_TLS_GD_CALL:
1876 case R_SPARC_TLS_LDM_CALL:
1877 /* This reloc implicitly references __tls_get_addr. We know
1878 another reloc will reference the same symbol as the one
1879 on this reloc, so the real symbol and section will be
1880 gc marked when processing the other reloc. That lets
1881 us handle __tls_get_addr here. */
1882 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1883 FALSE, FALSE, TRUE);
1884 BFD_ASSERT (h != NULL);
1885 h->mark = 1;
1886 if (h->is_weakalias)
1887 weakdef (h)->mark = 1;
1888 sym = NULL;
1889 }
1890 }
1891
1892 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1893 }
1894
1895 static Elf_Internal_Rela *
1896 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1897 Elf_Internal_Rela *relend,
1898 bfd_vma offset)
1899 {
1900 while (rel < relend)
1901 {
1902 if (rel->r_offset == offset)
1903 return rel;
1904 rel++;
1905 }
1906 return NULL;
1907 }
1908
1909 /* Remove undefined weak symbol from the dynamic symbol table if it
1910 is resolved to 0. */
1911
1912 bfd_boolean
1913 _bfd_sparc_elf_fixup_symbol (struct bfd_link_info *info,
1914 struct elf_link_hash_entry *h)
1915 {
1916 if (h->dynindx != -1
1917 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
1918 _bfd_sparc_elf_hash_entry (h)))
1919 {
1920 h->dynindx = -1;
1921 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1922 h->dynstr_index);
1923 }
1924 return TRUE;
1925 }
1926
1927 /* Find dynamic relocs for H that apply to read-only sections. */
1928
1929 static asection *
1930 readonly_dynrelocs (struct elf_link_hash_entry *h)
1931 {
1932 struct elf_dyn_relocs *p;
1933
1934 for (p = _bfd_sparc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
1935 {
1936 asection *s = p->sec->output_section;
1937
1938 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1939 return p->sec;
1940 }
1941 return NULL;
1942 }
1943
1944 /* Adjust a symbol defined by a dynamic object and referenced by a
1945 regular object. The current definition is in some section of the
1946 dynamic object, but we're not including those sections. We have to
1947 change the definition to something the rest of the link can
1948 understand. */
1949
1950 bfd_boolean
1951 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1952 struct elf_link_hash_entry *h)
1953 {
1954 struct _bfd_sparc_elf_link_hash_table *htab;
1955 asection *s, *srel;
1956
1957 htab = _bfd_sparc_elf_hash_table (info);
1958 BFD_ASSERT (htab != NULL);
1959
1960 /* Make sure we know what is going on here. */
1961 BFD_ASSERT (htab->elf.dynobj != NULL
1962 && (h->needs_plt
1963 || h->type == STT_GNU_IFUNC
1964 || h->is_weakalias
1965 || (h->def_dynamic
1966 && h->ref_regular
1967 && !h->def_regular)));
1968
1969 /* If this is a function, put it in the procedure linkage table. We
1970 will fill in the contents of the procedure linkage table later
1971 (although we could actually do it here). The STT_NOTYPE
1972 condition is a hack specifically for the Oracle libraries
1973 delivered for Solaris; for some inexplicable reason, they define
1974 some of their functions as STT_NOTYPE when they really should be
1975 STT_FUNC. */
1976 if (h->type == STT_FUNC
1977 || h->type == STT_GNU_IFUNC
1978 || h->needs_plt
1979 || (h->type == STT_NOTYPE
1980 && (h->root.type == bfd_link_hash_defined
1981 || h->root.type == bfd_link_hash_defweak)
1982 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1983 {
1984 if (h->plt.refcount <= 0
1985 || (h->type != STT_GNU_IFUNC
1986 && (SYMBOL_CALLS_LOCAL (info, h)
1987 || (h->root.type == bfd_link_hash_undefweak
1988 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))))
1989 {
1990 /* This case can occur if we saw a WPLT30 reloc in an input
1991 file, but the symbol was never referred to by a dynamic
1992 object, or if all references were garbage collected. In
1993 such a case, we don't actually need to build a procedure
1994 linkage table, and we can just do a WDISP30 reloc instead. */
1995 h->plt.offset = (bfd_vma) -1;
1996 h->needs_plt = 0;
1997 }
1998
1999 return TRUE;
2000 }
2001 else
2002 h->plt.offset = (bfd_vma) -1;
2003
2004 /* If this is a weak symbol, and there is a real definition, the
2005 processor independent code will have arranged for us to see the
2006 real definition first, and we can just use the same value. */
2007 if (h->is_weakalias)
2008 {
2009 struct elf_link_hash_entry *def = weakdef (h);
2010 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2011 h->root.u.def.section = def->root.u.def.section;
2012 h->root.u.def.value = def->root.u.def.value;
2013 return TRUE;
2014 }
2015
2016 /* This is a reference to a symbol defined by a dynamic object which
2017 is not a function. */
2018
2019 /* If we are creating a shared library, we must presume that the
2020 only references to the symbol are via the global offset table.
2021 For such cases we need not do anything here; the relocations will
2022 be handled correctly by relocate_section. */
2023 if (bfd_link_pic (info))
2024 return TRUE;
2025
2026 /* If there are no references to this symbol that do not use the
2027 GOT, we don't need to generate a copy reloc. */
2028 if (!h->non_got_ref)
2029 return TRUE;
2030
2031 /* If -z nocopyreloc was given, we won't generate them either. */
2032 if (info->nocopyreloc)
2033 {
2034 h->non_got_ref = 0;
2035 return TRUE;
2036 }
2037
2038 /* If we don't find any dynamic relocs in read-only sections, then
2039 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2040 if (!readonly_dynrelocs (h))
2041 {
2042 h->non_got_ref = 0;
2043 return TRUE;
2044 }
2045
2046 /* We must allocate the symbol in our .dynbss section, which will
2047 become part of the .bss section of the executable. There will be
2048 an entry for this symbol in the .dynsym section. The dynamic
2049 object will contain position independent code, so all references
2050 from the dynamic object to this symbol will go through the global
2051 offset table. The dynamic linker will use the .dynsym entry to
2052 determine the address it must put in the global offset table, so
2053 both the dynamic object and the regular object will refer to the
2054 same memory location for the variable. */
2055
2056 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2057 to copy the initial value out of the dynamic object and into the
2058 runtime process image. We need to remember the offset into the
2059 .rel.bss section we are going to use. */
2060 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2061 {
2062 s = htab->elf.sdynrelro;
2063 srel = htab->elf.sreldynrelro;
2064 }
2065 else
2066 {
2067 s = htab->elf.sdynbss;
2068 srel = htab->elf.srelbss;
2069 }
2070 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2071 {
2072 srel->size += SPARC_ELF_RELA_BYTES (htab);
2073 h->needs_copy = 1;
2074 }
2075
2076 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2077 }
2078
2079 /* Allocate space in .plt, .got and associated reloc sections for
2080 dynamic relocs. */
2081
2082 static bfd_boolean
2083 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2084 {
2085 struct bfd_link_info *info;
2086 struct _bfd_sparc_elf_link_hash_table *htab;
2087 struct _bfd_sparc_elf_link_hash_entry *eh;
2088 struct elf_dyn_relocs *p;
2089 bfd_boolean resolved_to_zero;
2090
2091 if (h->root.type == bfd_link_hash_indirect)
2092 return TRUE;
2093
2094 info = (struct bfd_link_info *) inf;
2095 htab = _bfd_sparc_elf_hash_table (info);
2096 BFD_ASSERT (htab != NULL);
2097
2098 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2099 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
2100
2101 if ((htab->elf.dynamic_sections_created
2102 && h->plt.refcount > 0)
2103 || (h->type == STT_GNU_IFUNC
2104 && h->def_regular
2105 && h->ref_regular))
2106 {
2107 /* Undefined weak syms won't yet be marked as dynamic. */
2108 if (h->root.type == bfd_link_hash_undefweak
2109 && !resolved_to_zero
2110 && h->dynindx == -1
2111 && !h->forced_local)
2112 {
2113 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2114 return FALSE;
2115 }
2116
2117 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
2118 || (h->type == STT_GNU_IFUNC
2119 && h->def_regular))
2120 {
2121 asection *s = htab->elf.splt;
2122
2123 if (s == NULL)
2124 s = htab->elf.iplt;
2125
2126 /* Allocate room for the header. */
2127 if (s->size == 0)
2128 {
2129 s->size = htab->plt_header_size;
2130
2131 /* Allocate space for the .rela.plt.unloaded relocations. */
2132 if (htab->is_vxworks && !bfd_link_pic (info))
2133 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2134 }
2135
2136 /* The procedure linkage table size is bounded by the magnitude
2137 of the offset we can describe in the entry. */
2138 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2139 (((bfd_vma)1 << 31) << 1) : 0x400000))
2140 {
2141 bfd_set_error (bfd_error_bad_value);
2142 return FALSE;
2143 }
2144
2145 if (SPARC_ELF_WORD_BYTES(htab) == 8
2146 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2147 {
2148 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2149
2150
2151 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2152
2153 h->plt.offset = (s->size - (off * 8));
2154 }
2155 else
2156 h->plt.offset = s->size;
2157
2158 /* If this symbol is not defined in a regular file, and we are
2159 not generating a shared library, then set the symbol to this
2160 location in the .plt. This is required to make function
2161 pointers compare as equal between the normal executable and
2162 the shared library. */
2163 if (! bfd_link_pic (info)
2164 && !h->def_regular)
2165 {
2166 h->root.u.def.section = s;
2167 h->root.u.def.value = h->plt.offset;
2168 }
2169
2170 /* Make room for this entry. */
2171 s->size += htab->plt_entry_size;
2172
2173 /* There should be no PLT relocations against resolved undefined
2174 weak symbols in the executable. */
2175 if (!resolved_to_zero)
2176 {
2177 /* We also need to make an entry in the .rela.plt section. */
2178 if (s == htab->elf.splt)
2179 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2180 else
2181 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2182 }
2183
2184 if (htab->is_vxworks)
2185 {
2186 /* Allocate space for the .got.plt entry. */
2187 htab->elf.sgotplt->size += 4;
2188
2189 /* ...and for the .rela.plt.unloaded relocations. */
2190 if (!bfd_link_pic (info))
2191 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2192 }
2193 }
2194 else
2195 {
2196 h->plt.offset = (bfd_vma) -1;
2197 h->needs_plt = 0;
2198 }
2199 }
2200 else
2201 {
2202 h->plt.offset = (bfd_vma) -1;
2203 h->needs_plt = 0;
2204 }
2205
2206 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2207 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2208 if (h->got.refcount > 0
2209 && bfd_link_executable (info)
2210 && h->dynindx == -1
2211 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2212 h->got.offset = (bfd_vma) -1;
2213 else if (h->got.refcount > 0)
2214 {
2215 asection *s;
2216 bfd_boolean dyn;
2217 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2218
2219 /* Undefined weak syms won't yet be marked as dynamic. */
2220 if (h->root.type == bfd_link_hash_undefweak
2221 && !resolved_to_zero
2222 && h->dynindx == -1
2223 && !h->forced_local)
2224 {
2225 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2226 return FALSE;
2227 }
2228
2229 s = htab->elf.sgot;
2230 h->got.offset = s->size;
2231 s->size += SPARC_ELF_WORD_BYTES (htab);
2232 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2233 if (tls_type == GOT_TLS_GD)
2234 s->size += SPARC_ELF_WORD_BYTES (htab);
2235 dyn = htab->elf.dynamic_sections_created;
2236 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2237 R_SPARC_TLS_GD_{HI22,LO10} needs one if local and two if global. */
2238 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2239 || tls_type == GOT_TLS_IE
2240 || h->type == STT_GNU_IFUNC)
2241 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2242 else if (tls_type == GOT_TLS_GD)
2243 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2244 else if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
2245 /* Even if the symbol isn't dynamic, we may generate a
2246 reloc for the dynamic linker in PIC mode. */
2247 || (h->dynindx == -1
2248 && !h->forced_local
2249 && h->root.type != bfd_link_hash_undefweak
2250 && bfd_link_pic (info)))
2251 /* No dynamic relocations are needed against resolved
2252 undefined weak symbols in an executable. */
2253 && !(h->root.type == bfd_link_hash_undefweak
2254 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2255 || resolved_to_zero)))
2256 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2257 }
2258 else
2259 h->got.offset = (bfd_vma) -1;
2260
2261 if (eh->dyn_relocs == NULL)
2262 return TRUE;
2263
2264 /* In the shared -Bsymbolic case, discard space allocated for
2265 dynamic pc-relative relocs against symbols which turn out to be
2266 defined in regular objects. For the normal shared case, discard
2267 space for pc-relative relocs that have become local due to symbol
2268 visibility changes. */
2269
2270 if (bfd_link_pic (info))
2271 {
2272 if (SYMBOL_CALLS_LOCAL (info, h))
2273 {
2274 struct elf_dyn_relocs **pp;
2275
2276 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2277 {
2278 p->count -= p->pc_count;
2279 p->pc_count = 0;
2280 if (p->count == 0)
2281 *pp = p->next;
2282 else
2283 pp = &p->next;
2284 }
2285 }
2286
2287 if (htab->is_vxworks)
2288 {
2289 struct elf_dyn_relocs **pp;
2290
2291 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2292 {
2293 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2294 *pp = p->next;
2295 else
2296 pp = &p->next;
2297 }
2298 }
2299
2300 /* Also discard relocs on undefined weak syms with non-default
2301 visibility or in PIE. */
2302 if (eh->dyn_relocs != NULL
2303 && h->root.type == bfd_link_hash_undefweak)
2304 {
2305 /* An undefined weak symbol is never
2306 bound locally in a shared library. */
2307
2308 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2309 || resolved_to_zero)
2310 {
2311 if (h->non_got_ref)
2312 {
2313 /* Keep dynamic non-GOT/non-PLT relocation so that we
2314 can branch to 0 without PLT. */
2315 struct elf_dyn_relocs **pp;
2316
2317 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2318 if (p->pc_count == 0)
2319 *pp = p->next;
2320 else
2321 {
2322 /* Remove other relocations. */
2323 p->count = p->pc_count;
2324 pp = &p->next;
2325 }
2326
2327 if (eh->dyn_relocs != NULL)
2328 {
2329 /* Make sure undefined weak symbols are output
2330 as dynamic symbols in PIEs for dynamic non-GOT
2331 non-PLT reloations. */
2332 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2333 return FALSE;
2334 }
2335 }
2336 else
2337 eh->dyn_relocs = NULL;
2338 }
2339
2340 /* Make sure undefined weak symbols are output as a dynamic
2341 symbol in PIEs. */
2342 else if (h->dynindx == -1
2343 && !h->forced_local)
2344 {
2345 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2346 return FALSE;
2347 }
2348 }
2349 }
2350 else
2351 {
2352 /* For the non-shared case, discard space for relocs against
2353 symbols which turn out to need copy relocs or are not
2354 dynamic. */
2355
2356 if ((!h->non_got_ref
2357 || (h->root.type == bfd_link_hash_undefweak
2358 && !resolved_to_zero))
2359 && ((h->def_dynamic
2360 && !h->def_regular)
2361 || (htab->elf.dynamic_sections_created
2362 && (h->root.type == bfd_link_hash_undefweak
2363 || h->root.type == bfd_link_hash_undefined))))
2364 {
2365 /* Undefined weak syms won't yet be marked as dynamic. */
2366 if (h->root.type == bfd_link_hash_undefweak
2367 && !resolved_to_zero
2368 && h->dynindx == -1
2369 && !h->forced_local)
2370 {
2371 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2372 return FALSE;
2373 }
2374
2375 /* If that succeeded, we know we'll be keeping all the
2376 relocs. */
2377 if (h->dynindx != -1)
2378 goto keep;
2379 }
2380
2381 eh->dyn_relocs = NULL;
2382
2383 keep: ;
2384 }
2385
2386 /* Finally, allocate space. */
2387 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2388 {
2389 asection *sreloc = elf_section_data (p->sec)->sreloc;
2390 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2391 }
2392
2393 return TRUE;
2394 }
2395
2396 /* Allocate space in .plt, .got and associated reloc sections for
2397 local dynamic relocs. */
2398
2399 static bfd_boolean
2400 allocate_local_dynrelocs (void **slot, void *inf)
2401 {
2402 struct elf_link_hash_entry *h
2403 = (struct elf_link_hash_entry *) *slot;
2404
2405 if (h->type != STT_GNU_IFUNC
2406 || !h->def_regular
2407 || !h->ref_regular
2408 || !h->forced_local
2409 || h->root.type != bfd_link_hash_defined)
2410 abort ();
2411
2412 return allocate_dynrelocs (h, inf);
2413 }
2414
2415 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2416 read-only sections. */
2417
2418 static bfd_boolean
2419 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
2420 {
2421 asection *sec;
2422
2423 if (h->root.type == bfd_link_hash_indirect)
2424 return TRUE;
2425
2426 sec = readonly_dynrelocs (h);
2427 if (sec != NULL)
2428 {
2429 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
2430
2431 info->flags |= DF_TEXTREL;
2432 info->callbacks->minfo
2433 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2434 sec->owner, h->root.root.string, sec);
2435
2436 /* Not an error, just cut short the traversal. */
2437 return FALSE;
2438 }
2439 return TRUE;
2440 }
2441
2442 /* Return true if the dynamic symbol for a given section should be
2443 omitted when creating a shared library. */
2444
2445 bfd_boolean
2446 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2447 struct bfd_link_info *info,
2448 asection *p)
2449 {
2450 /* We keep the .got section symbol so that explicit relocations
2451 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2452 can be turned into relocations against the .got symbol. */
2453 if (strcmp (p->name, ".got") == 0)
2454 return FALSE;
2455
2456 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
2457 }
2458
2459 /* Set the sizes of the dynamic sections. */
2460
2461 bfd_boolean
2462 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2463 struct bfd_link_info *info)
2464 {
2465 struct _bfd_sparc_elf_link_hash_table *htab;
2466 bfd *dynobj;
2467 asection *s;
2468 bfd *ibfd;
2469
2470 htab = _bfd_sparc_elf_hash_table (info);
2471 BFD_ASSERT (htab != NULL);
2472 dynobj = htab->elf.dynobj;
2473 BFD_ASSERT (dynobj != NULL);
2474
2475 if (elf_hash_table (info)->dynamic_sections_created)
2476 {
2477 /* Set the contents of the .interp section to the interpreter. */
2478 if (bfd_link_executable (info) && !info->nointerp)
2479 {
2480 s = bfd_get_linker_section (dynobj, ".interp");
2481 BFD_ASSERT (s != NULL);
2482 s->size = htab->dynamic_interpreter_size;
2483 s->contents = (unsigned char *) htab->dynamic_interpreter;
2484 htab->interp = s;
2485 }
2486 }
2487
2488 /* Set up .got offsets for local syms, and space for local dynamic
2489 relocs. */
2490 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2491 {
2492 bfd_signed_vma *local_got;
2493 bfd_signed_vma *end_local_got;
2494 char *local_tls_type;
2495 bfd_size_type locsymcount;
2496 Elf_Internal_Shdr *symtab_hdr;
2497 asection *srel;
2498
2499 if (! is_sparc_elf (ibfd))
2500 continue;
2501
2502 for (s = ibfd->sections; s != NULL; s = s->next)
2503 {
2504 struct elf_dyn_relocs *p;
2505
2506 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2507 {
2508 if (!bfd_is_abs_section (p->sec)
2509 && bfd_is_abs_section (p->sec->output_section))
2510 {
2511 /* Input section has been discarded, either because
2512 it is a copy of a linkonce section or due to
2513 linker script /DISCARD/, so we'll be discarding
2514 the relocs too. */
2515 }
2516 else if (htab->is_vxworks
2517 && strcmp (p->sec->output_section->name,
2518 ".tls_vars") == 0)
2519 {
2520 /* Relocations in vxworks .tls_vars sections are
2521 handled specially by the loader. */
2522 }
2523 else if (p->count != 0)
2524 {
2525 srel = elf_section_data (p->sec)->sreloc;
2526 if (!htab->elf.dynamic_sections_created)
2527 srel = htab->elf.irelplt;
2528 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2529 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2530 {
2531 info->flags |= DF_TEXTREL;
2532 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
2533 p->sec->owner, p->sec);
2534 }
2535 }
2536 }
2537 }
2538
2539 local_got = elf_local_got_refcounts (ibfd);
2540 if (!local_got)
2541 continue;
2542
2543 symtab_hdr = &elf_symtab_hdr (ibfd);
2544 locsymcount = symtab_hdr->sh_info;
2545 end_local_got = local_got + locsymcount;
2546 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2547 s = htab->elf.sgot;
2548 srel = htab->elf.srelgot;
2549 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2550 {
2551 if (*local_got > 0)
2552 {
2553 *local_got = s->size;
2554 s->size += SPARC_ELF_WORD_BYTES (htab);
2555 if (*local_tls_type == GOT_TLS_GD)
2556 s->size += SPARC_ELF_WORD_BYTES (htab);
2557 if (bfd_link_pic (info)
2558 || *local_tls_type == GOT_TLS_GD
2559 || *local_tls_type == GOT_TLS_IE)
2560 srel->size += SPARC_ELF_RELA_BYTES (htab);
2561 }
2562 else
2563 *local_got = (bfd_vma) -1;
2564 }
2565 }
2566
2567 if (htab->tls_ldm_got.refcount > 0)
2568 {
2569 /* Allocate 2 got entries and 1 dynamic reloc for
2570 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2571 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2572 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2573 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2574 }
2575 else
2576 htab->tls_ldm_got.offset = -1;
2577
2578 /* Allocate global sym .plt and .got entries, and space for global
2579 sym dynamic relocs. */
2580 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2581
2582 /* Allocate .plt and .got entries, and space for local symbols. */
2583 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2584
2585 if (! ABI_64_P (output_bfd)
2586 && !htab->is_vxworks
2587 && elf_hash_table (info)->dynamic_sections_created)
2588 {
2589 /* Make space for the trailing nop in .plt. */
2590 if (htab->elf.splt->size > 0)
2591 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2592
2593 /* If the .got section is more than 0x1000 bytes, we add
2594 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2595 bit relocations have a greater chance of working.
2596
2597 FIXME: Make this optimization work for 64-bit too. */
2598 if (htab->elf.sgot->size >= 0x1000
2599 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2600 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2601 }
2602
2603 /* The check_relocs and adjust_dynamic_symbol entry points have
2604 determined the sizes of the various dynamic sections. Allocate
2605 memory for them. */
2606 for (s = dynobj->sections; s != NULL; s = s->next)
2607 {
2608 if ((s->flags & SEC_LINKER_CREATED) == 0)
2609 continue;
2610
2611 if (s == htab->elf.splt
2612 || s == htab->elf.sgot
2613 || s == htab->elf.sdynbss
2614 || s == htab->elf.sdynrelro
2615 || s == htab->elf.iplt
2616 || s == htab->elf.sgotplt)
2617 {
2618 /* Strip this section if we don't need it; see the
2619 comment below. */
2620 }
2621 else if (CONST_STRNEQ (s->name, ".rela"))
2622 {
2623 if (s->size != 0)
2624 {
2625 /* We use the reloc_count field as a counter if we need
2626 to copy relocs into the output file. */
2627 s->reloc_count = 0;
2628 }
2629 }
2630 else
2631 {
2632 /* It's not one of our sections. */
2633 continue;
2634 }
2635
2636 if (s->size == 0)
2637 {
2638 /* If we don't need this section, strip it from the
2639 output file. This is mostly to handle .rela.bss and
2640 .rela.plt. We must create both sections in
2641 create_dynamic_sections, because they must be created
2642 before the linker maps input sections to output
2643 sections. The linker does that before
2644 adjust_dynamic_symbol is called, and it is that
2645 function which decides whether anything needs to go
2646 into these sections. */
2647 s->flags |= SEC_EXCLUDE;
2648 continue;
2649 }
2650
2651 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2652 continue;
2653
2654 /* Allocate memory for the section contents. Zero the memory
2655 for the benefit of .rela.plt, which has 4 unused entries
2656 at the beginning, and we don't want garbage. */
2657 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2658 if (s->contents == NULL)
2659 return FALSE;
2660 }
2661
2662 if (elf_hash_table (info)->dynamic_sections_created)
2663 {
2664 /* Add some entries to the .dynamic section. We fill in the
2665 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2666 must add the entries now so that we get the correct size for
2667 the .dynamic section. The DT_DEBUG entry is filled in by the
2668 dynamic linker and used by the debugger. */
2669 #define add_dynamic_entry(TAG, VAL) \
2670 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2671
2672 if (bfd_link_executable (info))
2673 {
2674 if (!add_dynamic_entry (DT_DEBUG, 0))
2675 return FALSE;
2676 }
2677
2678 if (htab->elf.srelplt->size != 0)
2679 {
2680 if (!add_dynamic_entry (DT_PLTGOT, 0)
2681 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2682 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2683 || !add_dynamic_entry (DT_JMPREL, 0))
2684 return FALSE;
2685 }
2686
2687 if (!add_dynamic_entry (DT_RELA, 0)
2688 || !add_dynamic_entry (DT_RELASZ, 0)
2689 || !add_dynamic_entry (DT_RELAENT,
2690 SPARC_ELF_RELA_BYTES (htab)))
2691 return FALSE;
2692
2693 /* If any dynamic relocs apply to a read-only section,
2694 then we need a DT_TEXTREL entry. */
2695 if ((info->flags & DF_TEXTREL) == 0)
2696 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
2697
2698 if (info->flags & DF_TEXTREL)
2699 {
2700 if (!add_dynamic_entry (DT_TEXTREL, 0))
2701 return FALSE;
2702 }
2703
2704 if (ABI_64_P (output_bfd))
2705 {
2706 int reg;
2707 struct _bfd_sparc_elf_app_reg * app_regs;
2708 struct elf_strtab_hash *dynstr;
2709 struct elf_link_hash_table *eht = elf_hash_table (info);
2710
2711 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2712 entries if needed. */
2713 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2714 dynstr = eht->dynstr;
2715
2716 for (reg = 0; reg < 4; reg++)
2717 if (app_regs [reg].name != NULL)
2718 {
2719 struct elf_link_local_dynamic_entry *entry, *e;
2720
2721 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2722 return FALSE;
2723
2724 entry = (struct elf_link_local_dynamic_entry *)
2725 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2726 if (entry == NULL)
2727 return FALSE;
2728
2729 /* We cheat here a little bit: the symbol will not be local, so we
2730 put it at the end of the dynlocal linked list. We will fix it
2731 later on, as we have to fix other fields anyway. */
2732 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2733 entry->isym.st_size = 0;
2734 if (*app_regs [reg].name != '\0')
2735 entry->isym.st_name
2736 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2737 else
2738 entry->isym.st_name = 0;
2739 entry->isym.st_other = 0;
2740 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2741 STT_REGISTER);
2742 entry->isym.st_shndx = app_regs [reg].shndx;
2743 entry->isym.st_target_internal = 0;
2744 entry->next = NULL;
2745 entry->input_bfd = output_bfd;
2746 entry->input_indx = -1;
2747
2748 if (eht->dynlocal == NULL)
2749 eht->dynlocal = entry;
2750 else
2751 {
2752 for (e = eht->dynlocal; e->next; e = e->next)
2753 ;
2754 e->next = entry;
2755 }
2756 eht->dynsymcount++;
2757 }
2758 }
2759 if (htab->is_vxworks
2760 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2761 return FALSE;
2762 }
2763 #undef add_dynamic_entry
2764
2765 return TRUE;
2766 }
2767 \f
2768 bfd_boolean
2769 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2770 {
2771 if (!sec->used_by_bfd)
2772 {
2773 struct _bfd_sparc_elf_section_data *sdata;
2774 bfd_size_type amt = sizeof (*sdata);
2775
2776 sdata = bfd_zalloc (abfd, amt);
2777 if (sdata == NULL)
2778 return FALSE;
2779 sec->used_by_bfd = sdata;
2780 }
2781
2782 return _bfd_elf_new_section_hook (abfd, sec);
2783 }
2784
2785 bfd_boolean
2786 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2787 struct bfd_section *section,
2788 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2789 bfd_boolean *again)
2790 {
2791 if (bfd_link_relocatable (link_info))
2792 (*link_info->callbacks->einfo)
2793 (_("%P%F: --relax and -r may not be used together\n"));
2794
2795 *again = FALSE;
2796 sec_do_relax (section) = 1;
2797 return TRUE;
2798 }
2799 \f
2800 /* Return the base VMA address which should be subtracted from real addresses
2801 when resolving @dtpoff relocation.
2802 This is PT_TLS segment p_vaddr. */
2803
2804 static bfd_vma
2805 dtpoff_base (struct bfd_link_info *info)
2806 {
2807 /* If tls_sec is NULL, we should have signalled an error already. */
2808 if (elf_hash_table (info)->tls_sec == NULL)
2809 return 0;
2810 return elf_hash_table (info)->tls_sec->vma;
2811 }
2812
2813 /* Return the relocation value for @tpoff relocation
2814 if STT_TLS virtual address is ADDRESS. */
2815
2816 static bfd_vma
2817 tpoff (struct bfd_link_info *info, bfd_vma address)
2818 {
2819 struct elf_link_hash_table *htab = elf_hash_table (info);
2820 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2821 bfd_vma static_tls_size;
2822
2823 /* If tls_sec is NULL, we should have signalled an error already. */
2824 if (htab->tls_sec == NULL)
2825 return 0;
2826
2827 /* Consider special static TLS alignment requirements. */
2828 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2829 return address - static_tls_size - htab->tls_sec->vma;
2830 }
2831
2832 /* Return the relocation value for a %gdop relocation. */
2833
2834 static bfd_vma
2835 gdopoff (struct bfd_link_info *info, bfd_vma address)
2836 {
2837 struct elf_link_hash_table *htab = elf_hash_table (info);
2838 bfd_vma got_base;
2839
2840 got_base = (htab->hgot->root.u.def.value
2841 + htab->hgot->root.u.def.section->output_offset
2842 + htab->hgot->root.u.def.section->output_section->vma);
2843
2844 return address - got_base;
2845 }
2846
2847 /* Return whether H is local and its ADDRESS is within 4G of
2848 _GLOBAL_OFFSET_TABLE_ and thus the offset may be calculated by a
2849 sethi, xor sequence. */
2850
2851 static bfd_boolean
2852 gdop_relative_offset_ok (struct bfd_link_info *info,
2853 struct elf_link_hash_entry *h,
2854 bfd_vma address ATTRIBUTE_UNUSED)
2855 {
2856 if (!SYMBOL_REFERENCES_LOCAL (info, h))
2857 return FALSE;
2858 /* If H is undefined, ADDRESS will be zero. We can't allow a
2859 relative offset to "zero" when producing PIEs or shared libs.
2860 Note that to get here with an undefined symbol it must also be
2861 hidden or internal visibility. */
2862 if (bfd_link_pic (info)
2863 && h != NULL
2864 && (h->root.type == bfd_link_hash_undefweak
2865 || h->root.type == bfd_link_hash_undefined))
2866 return FALSE;
2867 #ifdef BFD64
2868 return gdopoff (info, address) + ((bfd_vma) 1 << 32) < (bfd_vma) 2 << 32;
2869 #else
2870 return TRUE;
2871 #endif
2872 }
2873
2874 /* Relocate a SPARC ELF section. */
2875
2876 bfd_boolean
2877 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2878 struct bfd_link_info *info,
2879 bfd *input_bfd,
2880 asection *input_section,
2881 bfd_byte *contents,
2882 Elf_Internal_Rela *relocs,
2883 Elf_Internal_Sym *local_syms,
2884 asection **local_sections)
2885 {
2886 struct _bfd_sparc_elf_link_hash_table *htab;
2887 Elf_Internal_Shdr *symtab_hdr;
2888 struct elf_link_hash_entry **sym_hashes;
2889 bfd_vma *local_got_offsets;
2890 bfd_vma got_base;
2891 asection *sreloc;
2892 Elf_Internal_Rela *rel;
2893 Elf_Internal_Rela *relend;
2894 int num_relocs;
2895 bfd_boolean is_vxworks_tls;
2896
2897 htab = _bfd_sparc_elf_hash_table (info);
2898 BFD_ASSERT (htab != NULL);
2899 symtab_hdr = &elf_symtab_hdr (input_bfd);
2900 sym_hashes = elf_sym_hashes (input_bfd);
2901 local_got_offsets = elf_local_got_offsets (input_bfd);
2902
2903 if (elf_hash_table (info)->hgot == NULL)
2904 got_base = 0;
2905 else
2906 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2907
2908 sreloc = elf_section_data (input_section)->sreloc;
2909 /* We have to handle relocations in vxworks .tls_vars sections
2910 specially, because the dynamic loader is 'weird'. */
2911 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
2912 && !strcmp (input_section->output_section->name,
2913 ".tls_vars"));
2914
2915 rel = relocs;
2916 if (ABI_64_P (output_bfd))
2917 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2918 else
2919 num_relocs = input_section->reloc_count;
2920 relend = relocs + num_relocs;
2921 for (; rel < relend; rel++)
2922 {
2923 int r_type, tls_type;
2924 reloc_howto_type *howto;
2925 unsigned long r_symndx;
2926 struct elf_link_hash_entry *h;
2927 struct _bfd_sparc_elf_link_hash_entry *eh;
2928 Elf_Internal_Sym *sym;
2929 asection *sec;
2930 bfd_vma relocation, off;
2931 bfd_reloc_status_type r;
2932 bfd_boolean is_plt = FALSE;
2933 bfd_boolean unresolved_reloc;
2934 bfd_boolean resolved_to_zero;
2935 bfd_boolean relative_reloc;
2936
2937 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2938 if (r_type == R_SPARC_GNU_VTINHERIT
2939 || r_type == R_SPARC_GNU_VTENTRY)
2940 continue;
2941
2942 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2943 {
2944 bfd_set_error (bfd_error_bad_value);
2945 return FALSE;
2946 }
2947
2948 howto = _bfd_sparc_elf_howto_table + r_type;
2949 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2950 h = NULL;
2951 sym = NULL;
2952 sec = NULL;
2953 unresolved_reloc = FALSE;
2954 if (r_symndx < symtab_hdr->sh_info)
2955 {
2956 sym = local_syms + r_symndx;
2957 sec = local_sections[r_symndx];
2958 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2959
2960 if (!bfd_link_relocatable (info)
2961 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2962 {
2963 /* Relocate against local STT_GNU_IFUNC symbol. */
2964 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
2965 rel, FALSE);
2966 if (h == NULL)
2967 abort ();
2968
2969 /* Set STT_GNU_IFUNC symbol value. */
2970 h->root.u.def.value = sym->st_value;
2971 h->root.u.def.section = sec;
2972 }
2973 }
2974 else
2975 {
2976 bfd_boolean warned, ignored;
2977
2978 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2979 r_symndx, symtab_hdr, sym_hashes,
2980 h, sec, relocation,
2981 unresolved_reloc, warned, ignored);
2982 if (warned)
2983 {
2984 /* To avoid generating warning messages about truncated
2985 relocations, set the relocation's address to be the same as
2986 the start of this section. */
2987 if (input_section->output_section != NULL)
2988 relocation = input_section->output_section->vma;
2989 else
2990 relocation = 0;
2991 }
2992 }
2993
2994 if (sec != NULL && discarded_section (sec))
2995 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2996 rel, 1, relend, howto, 0, contents);
2997
2998 if (bfd_link_relocatable (info))
2999 continue;
3000
3001 if (h != NULL
3002 && h->type == STT_GNU_IFUNC
3003 && h->def_regular)
3004 {
3005 asection *plt_sec;
3006 const char *name;
3007
3008 if ((input_section->flags & SEC_ALLOC) == 0
3009 || h->plt.offset == (bfd_vma) -1)
3010 {
3011 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
3012 STT_GNU_IFUNC symbol as STT_FUNC. */
3013 if (elf_section_type (input_section) == SHT_NOTE)
3014 goto skip_ifunc;
3015 abort ();
3016 }
3017
3018 plt_sec = htab->elf.splt;
3019 if (! plt_sec)
3020 plt_sec =htab->elf.iplt;
3021
3022 switch (r_type)
3023 {
3024 case R_SPARC_GOTDATA_OP:
3025 continue;
3026
3027 case R_SPARC_GOTDATA_OP_HIX22:
3028 case R_SPARC_GOTDATA_OP_LOX10:
3029 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3030 ? R_SPARC_GOT22
3031 : R_SPARC_GOT10);
3032 howto = _bfd_sparc_elf_howto_table + r_type;
3033 /* Fall through. */
3034
3035 case R_SPARC_GOT10:
3036 case R_SPARC_GOT13:
3037 case R_SPARC_GOT22:
3038 if (htab->elf.sgot == NULL)
3039 abort ();
3040 off = h->got.offset;
3041 if (off == (bfd_vma) -1)
3042 abort();
3043 relocation = htab->elf.sgot->output_offset + off - got_base;
3044 goto do_relocation;
3045
3046 case R_SPARC_WPLT30:
3047 case R_SPARC_WDISP30:
3048 relocation = (plt_sec->output_section->vma
3049 + plt_sec->output_offset + h->plt.offset);
3050 goto do_relocation;
3051
3052 case R_SPARC_32:
3053 case R_SPARC_64:
3054 if (bfd_link_pic (info) && h->non_got_ref)
3055 {
3056 Elf_Internal_Rela outrel;
3057 bfd_vma offset;
3058
3059 offset = _bfd_elf_section_offset (output_bfd, info,
3060 input_section,
3061 rel->r_offset);
3062 if (offset == (bfd_vma) -1
3063 || offset == (bfd_vma) -2)
3064 abort();
3065
3066 outrel.r_offset = (input_section->output_section->vma
3067 + input_section->output_offset
3068 + offset);
3069
3070 if (h->dynindx == -1
3071 || h->forced_local
3072 || bfd_link_executable (info))
3073 {
3074 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3075 0, R_SPARC_IRELATIVE);
3076 outrel.r_addend = relocation + rel->r_addend;
3077 }
3078 else
3079 {
3080 if (h->dynindx == -1)
3081 abort();
3082 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3083 outrel.r_addend = rel->r_addend;
3084 }
3085
3086 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3087 continue;
3088 }
3089
3090 relocation = (plt_sec->output_section->vma
3091 + plt_sec->output_offset + h->plt.offset);
3092 goto do_relocation;
3093
3094 case R_SPARC_HI22:
3095 case R_SPARC_LO10:
3096 /* We should only see such relocs in static links. */
3097 if (bfd_link_pic (info))
3098 abort();
3099 relocation = (plt_sec->output_section->vma
3100 + plt_sec->output_offset + h->plt.offset);
3101 goto do_relocation;
3102
3103 default:
3104 if (h->root.root.string)
3105 name = h->root.root.string;
3106 else
3107 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3108 NULL);
3109 _bfd_error_handler
3110 /* xgettext:c-format */
3111 (_("%pB: relocation %s against STT_GNU_IFUNC "
3112 "symbol `%s' isn't handled by %s"), input_bfd,
3113 _bfd_sparc_elf_howto_table[r_type].name,
3114 name, __FUNCTION__);
3115 bfd_set_error (bfd_error_bad_value);
3116 return FALSE;
3117 }
3118 }
3119
3120 skip_ifunc:
3121 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
3122 resolved_to_zero = eh && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
3123
3124 switch (r_type)
3125 {
3126 case R_SPARC_GOTDATA_OP_HIX22:
3127 case R_SPARC_GOTDATA_OP_LOX10:
3128 if (gdop_relative_offset_ok (info, h, relocation))
3129 {
3130 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3131 ? R_SPARC_GOTDATA_HIX22
3132 : R_SPARC_GOTDATA_LOX10);
3133 howto = _bfd_sparc_elf_howto_table + r_type;
3134 }
3135 break;
3136
3137 case R_SPARC_GOTDATA_OP:
3138 if (gdop_relative_offset_ok (info, h, relocation))
3139 {
3140 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3141
3142 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3143 relocation = 0x80000000 | (insn & 0x3e07c01f);
3144 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3145
3146 /* If the symbol is global but not dynamic, an .rela.* slot has
3147 been allocated for it in the GOT so output R_SPARC_NONE here,
3148 if it isn't also subject to another, old-style GOT relocation.
3149 See also the handling of these GOT relocations just below. */
3150 if (h != NULL
3151 && h->dynindx == -1
3152 && !h->forced_local
3153 && h->root.type != bfd_link_hash_undefweak
3154 && !eh->has_old_style_got_reloc
3155 && (h->got.offset & 1) == 0
3156 && bfd_link_pic (info))
3157 {
3158 asection *s = htab->elf.srelgot;
3159 Elf_Internal_Rela outrel;
3160
3161 BFD_ASSERT (s != NULL);
3162
3163 memset (&outrel, 0, sizeof outrel);
3164 sparc_elf_append_rela (output_bfd, s, &outrel);
3165 h->got.offset |= 1;
3166 }
3167 }
3168 continue;
3169 }
3170
3171 switch (r_type)
3172 {
3173 case R_SPARC_GOTDATA_HIX22:
3174 case R_SPARC_GOTDATA_LOX10:
3175 relocation = gdopoff (info, relocation);
3176 break;
3177
3178 case R_SPARC_GOTDATA_OP_HIX22:
3179 case R_SPARC_GOTDATA_OP_LOX10:
3180 case R_SPARC_GOT10:
3181 case R_SPARC_GOT13:
3182 case R_SPARC_GOT22:
3183 /* Relocation is to the entry for this symbol in the global
3184 offset table. */
3185 if (htab->elf.sgot == NULL)
3186 abort ();
3187
3188 relative_reloc = FALSE;
3189 if (h != NULL)
3190 {
3191 bfd_boolean dyn;
3192
3193 off = h->got.offset;
3194 BFD_ASSERT (off != (bfd_vma) -1);
3195 dyn = elf_hash_table (info)->dynamic_sections_created;
3196
3197 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3198 bfd_link_pic (info),
3199 h)
3200 || (bfd_link_pic (info)
3201 && SYMBOL_REFERENCES_LOCAL (info, h)))
3202 {
3203 /* This is actually a static link, or it is a
3204 -Bsymbolic link and the symbol is defined
3205 locally, or the symbol was forced to be local
3206 because of a version file. We must initialize
3207 this entry in the global offset table. Since the
3208 offset must always be a multiple of 8 for 64-bit
3209 and 4 for 32-bit, we use the least significant bit
3210 to record whether we have initialized it already.
3211
3212 When doing a dynamic link, we create a .rela.got
3213 relocation entry to initialize the value. This
3214 is done in the finish_dynamic_symbol routine. */
3215 if ((off & 1) != 0)
3216 off &= ~1;
3217 else
3218 {
3219 /* If this symbol isn't dynamic in PIC mode, treat it
3220 like a local symbol in PIC mode below. */
3221 if (h->dynindx == -1
3222 && !h->forced_local
3223 && h->root.type != bfd_link_hash_undefweak
3224 && bfd_link_pic (info))
3225 relative_reloc = TRUE;
3226 else
3227 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3228 htab->elf.sgot->contents + off);
3229 h->got.offset |= 1;
3230 }
3231 }
3232 else
3233 unresolved_reloc = FALSE;
3234 }
3235 else
3236 {
3237 BFD_ASSERT (local_got_offsets != NULL
3238 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3239
3240 off = local_got_offsets[r_symndx];
3241
3242 /* The offset must always be a multiple of 8 on 64-bit and
3243 4 on 32-bit. We use the least significant bit to record
3244 whether we have already processed this entry. */
3245 if ((off & 1) != 0)
3246 off &= ~1;
3247 else
3248 {
3249 /* For a local symbol in PIC mode, we need to generate a
3250 R_SPARC_RELATIVE reloc for the dynamic linker. */
3251 if (bfd_link_pic (info))
3252 relative_reloc = TRUE;
3253 else
3254 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3255 htab->elf.sgot->contents + off);
3256 local_got_offsets[r_symndx] |= 1;
3257 }
3258 }
3259
3260 if (relative_reloc)
3261 {
3262 asection *s = htab->elf.srelgot;
3263 Elf_Internal_Rela outrel;
3264
3265 BFD_ASSERT (s != NULL);
3266
3267 outrel.r_offset = (htab->elf.sgot->output_section->vma
3268 + htab->elf.sgot->output_offset
3269 + off);
3270 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3271 0, R_SPARC_RELATIVE);
3272 outrel.r_addend = relocation;
3273 sparc_elf_append_rela (output_bfd, s, &outrel);
3274 /* Versions of glibc ld.so at least up to 2.26 wrongly
3275 add the section contents to the value calculated for
3276 a RELATIVE reloc. Zero the contents to work around
3277 this bug. */
3278 relocation = 0;
3279 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3280 htab->elf.sgot->contents + off);
3281 }
3282
3283 relocation = htab->elf.sgot->output_offset + off - got_base;
3284 break;
3285
3286 case R_SPARC_PLT32:
3287 case R_SPARC_PLT64:
3288 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3289 {
3290 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3291 goto r_sparc_plt32;
3292 }
3293 /* Fall through. */
3294
3295 case R_SPARC_WPLT30:
3296 case R_SPARC_HIPLT22:
3297 case R_SPARC_LOPLT10:
3298 case R_SPARC_PCPLT32:
3299 case R_SPARC_PCPLT22:
3300 case R_SPARC_PCPLT10:
3301 r_sparc_wplt30:
3302 /* Relocation is to the entry for this symbol in the
3303 procedure linkage table. */
3304
3305 if (! ABI_64_P (output_bfd))
3306 {
3307 /* The Solaris native assembler will generate a WPLT30 reloc
3308 for a local symbol if you assemble a call from one
3309 section to another when using -K pic. We treat it as
3310 WDISP30. */
3311 if (h == NULL)
3312 break;
3313 }
3314 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3315 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3316 break;
3317 else
3318 {
3319 BFD_ASSERT (h != NULL);
3320 }
3321
3322 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3323 {
3324 /* We didn't make a PLT entry for this symbol. This
3325 happens when statically linking PIC code, or when
3326 using -Bsymbolic. */
3327 break;
3328 }
3329
3330 relocation = (htab->elf.splt->output_section->vma
3331 + htab->elf.splt->output_offset
3332 + h->plt.offset);
3333 unresolved_reloc = FALSE;
3334 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3335 {
3336 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3337 is_plt = TRUE;
3338 goto r_sparc_plt32;
3339 }
3340 break;
3341
3342 case R_SPARC_PC10:
3343 case R_SPARC_PC22:
3344 case R_SPARC_PC_HH22:
3345 case R_SPARC_PC_HM10:
3346 case R_SPARC_PC_LM22:
3347 if (h != NULL
3348 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3349 break;
3350 /* Fall through. */
3351 case R_SPARC_DISP8:
3352 case R_SPARC_DISP16:
3353 case R_SPARC_DISP32:
3354 case R_SPARC_DISP64:
3355 case R_SPARC_WDISP30:
3356 case R_SPARC_WDISP22:
3357 case R_SPARC_WDISP19:
3358 case R_SPARC_WDISP16:
3359 case R_SPARC_WDISP10:
3360 case R_SPARC_8:
3361 case R_SPARC_16:
3362 case R_SPARC_32:
3363 case R_SPARC_HI22:
3364 case R_SPARC_22:
3365 case R_SPARC_13:
3366 case R_SPARC_LO10:
3367 case R_SPARC_UA16:
3368 case R_SPARC_UA32:
3369 case R_SPARC_10:
3370 case R_SPARC_11:
3371 case R_SPARC_64:
3372 case R_SPARC_OLO10:
3373 case R_SPARC_HH22:
3374 case R_SPARC_HM10:
3375 case R_SPARC_LM22:
3376 case R_SPARC_7:
3377 case R_SPARC_5:
3378 case R_SPARC_6:
3379 case R_SPARC_HIX22:
3380 case R_SPARC_LOX10:
3381 case R_SPARC_H44:
3382 case R_SPARC_M44:
3383 case R_SPARC_L44:
3384 case R_SPARC_H34:
3385 case R_SPARC_UA64:
3386 r_sparc_plt32:
3387 if ((input_section->flags & SEC_ALLOC) == 0 || is_vxworks_tls)
3388 break;
3389
3390 /* Copy dynamic function pointer relocations. Don't generate
3391 dynamic relocations against resolved undefined weak symbols
3392 in PIE. */
3393 if ((bfd_link_pic (info)
3394 && (h == NULL
3395 || !(h->root.type == bfd_link_hash_undefweak
3396 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3397 || resolved_to_zero)))
3398 && (! howto->pc_relative
3399 || !SYMBOL_CALLS_LOCAL (info, h)))
3400 || (!bfd_link_pic (info)
3401 && h != NULL
3402 && h->dynindx != -1
3403 && !h->non_got_ref
3404 && ((h->def_dynamic
3405 && !h->def_regular)
3406 || (h->root.type == bfd_link_hash_undefweak
3407 && !resolved_to_zero)
3408 || h->root.type == bfd_link_hash_undefined)))
3409 {
3410 Elf_Internal_Rela outrel;
3411 bfd_boolean skip, relocate = FALSE;
3412
3413 /* When generating a shared object, these relocations
3414 are copied into the output file to be resolved at run
3415 time. */
3416
3417 BFD_ASSERT (sreloc != NULL);
3418
3419 skip = FALSE;
3420
3421 outrel.r_offset =
3422 _bfd_elf_section_offset (output_bfd, info, input_section,
3423 rel->r_offset);
3424 if (outrel.r_offset == (bfd_vma) -1)
3425 skip = TRUE;
3426 else if (outrel.r_offset == (bfd_vma) -2)
3427 skip = TRUE, relocate = TRUE;
3428 outrel.r_offset += (input_section->output_section->vma
3429 + input_section->output_offset);
3430
3431 /* Optimize unaligned reloc usage now that we know where
3432 it finally resides. */
3433 switch (r_type)
3434 {
3435 case R_SPARC_16:
3436 if (outrel.r_offset & 1)
3437 r_type = R_SPARC_UA16;
3438 break;
3439 case R_SPARC_UA16:
3440 if (!(outrel.r_offset & 1))
3441 r_type = R_SPARC_16;
3442 break;
3443 case R_SPARC_32:
3444 if (outrel.r_offset & 3)
3445 r_type = R_SPARC_UA32;
3446 break;
3447 case R_SPARC_UA32:
3448 if (!(outrel.r_offset & 3))
3449 r_type = R_SPARC_32;
3450 break;
3451 case R_SPARC_64:
3452 if (outrel.r_offset & 7)
3453 r_type = R_SPARC_UA64;
3454 break;
3455 case R_SPARC_UA64:
3456 if (!(outrel.r_offset & 7))
3457 r_type = R_SPARC_64;
3458 break;
3459 case R_SPARC_DISP8:
3460 case R_SPARC_DISP16:
3461 case R_SPARC_DISP32:
3462 case R_SPARC_DISP64:
3463 /* If the symbol is not dynamic, we should not keep
3464 a dynamic relocation. But an .rela.* slot has been
3465 allocated for it, output R_SPARC_NONE.
3466 FIXME: Add code tracking needed dynamic relocs as
3467 e.g. i386 has. */
3468 if (h->dynindx == -1)
3469 skip = TRUE, relocate = TRUE;
3470 break;
3471 }
3472
3473 if (skip)
3474 memset (&outrel, 0, sizeof outrel);
3475 /* h->dynindx may be -1 if the symbol was marked to
3476 become local. */
3477 else if (h != NULL
3478 && h->dynindx != -1
3479 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3480 || !bfd_link_pic (info)
3481 || !SYMBOLIC_BIND (info, h)
3482 || !h->def_regular))
3483 {
3484 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3485 outrel.r_addend = rel->r_addend;
3486 }
3487 else
3488 {
3489 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3490 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3491 {
3492 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3493 0, R_SPARC_RELATIVE);
3494 outrel.r_addend = relocation + rel->r_addend;
3495 }
3496 else
3497 {
3498 long indx;
3499
3500 outrel.r_addend = relocation + rel->r_addend;
3501
3502 if (is_plt)
3503 sec = htab->elf.splt;
3504
3505 if (bfd_is_abs_section (sec))
3506 indx = 0;
3507 else if (sec == NULL || sec->owner == NULL)
3508 {
3509 bfd_set_error (bfd_error_bad_value);
3510 return FALSE;
3511 }
3512 else
3513 {
3514 asection *osec;
3515
3516 /* We are turning this relocation into one
3517 against a section symbol. It would be
3518 proper to subtract the symbol's value,
3519 osec->vma, from the emitted reloc addend,
3520 but ld.so expects buggy relocs. */
3521 osec = sec->output_section;
3522 indx = elf_section_data (osec)->dynindx;
3523
3524 if (indx == 0)
3525 {
3526 osec = htab->elf.text_index_section;
3527 indx = elf_section_data (osec)->dynindx;
3528 }
3529
3530 /* FIXME: we really should be able to link non-pic
3531 shared libraries. */
3532 if (indx == 0)
3533 {
3534 BFD_FAIL ();
3535 _bfd_error_handler
3536 (_("%pB: probably compiled without -fPIC?"),
3537 input_bfd);
3538 bfd_set_error (bfd_error_bad_value);
3539 return FALSE;
3540 }
3541 }
3542
3543 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3544 r_type);
3545 }
3546 }
3547
3548 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3549
3550 /* This reloc will be computed at runtime, so there's no
3551 need to do anything now. */
3552 if (! relocate)
3553 continue;
3554 }
3555 break;
3556
3557 case R_SPARC_TLS_GD_HI22:
3558 case R_SPARC_TLS_GD_LO10:
3559 case R_SPARC_TLS_IE_HI22:
3560 case R_SPARC_TLS_IE_LO10:
3561 r_type = sparc_elf_tls_transition (info, input_bfd, r_type,
3562 h == NULL || h->dynindx == -1);
3563 if (r_type == R_SPARC_REV32)
3564 break;
3565 if (h != NULL)
3566 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3567 else if (local_got_offsets)
3568 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3569 else
3570 tls_type = GOT_UNKNOWN;
3571 if (tls_type == GOT_TLS_IE)
3572 switch (r_type)
3573 {
3574 case R_SPARC_TLS_GD_HI22:
3575 r_type = R_SPARC_TLS_IE_HI22;
3576 break;
3577 case R_SPARC_TLS_GD_LO10:
3578 r_type = R_SPARC_TLS_IE_LO10;
3579 break;
3580 }
3581
3582 if (r_type == R_SPARC_TLS_LE_HIX22)
3583 {
3584 relocation = tpoff (info, relocation);
3585 break;
3586 }
3587 if (r_type == R_SPARC_TLS_LE_LOX10)
3588 {
3589 /* Change add into xor. */
3590 relocation = tpoff (info, relocation);
3591 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3592 contents + rel->r_offset)
3593 | 0x80182000), contents + rel->r_offset);
3594 break;
3595 }
3596
3597 if (h != NULL)
3598 {
3599 off = h->got.offset;
3600 h->got.offset |= 1;
3601 }
3602 else
3603 {
3604 BFD_ASSERT (local_got_offsets != NULL);
3605 off = local_got_offsets[r_symndx];
3606 local_got_offsets[r_symndx] |= 1;
3607 }
3608
3609 r_sparc_tlsldm:
3610 if (htab->elf.sgot == NULL)
3611 abort ();
3612
3613 if ((off & 1) != 0)
3614 off &= ~1;
3615 else
3616 {
3617 Elf_Internal_Rela outrel;
3618 int dr_type, indx;
3619
3620 if (htab->elf.srelgot == NULL)
3621 abort ();
3622
3623 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3624 htab->elf.sgot->contents + off);
3625 outrel.r_offset = (htab->elf.sgot->output_section->vma
3626 + htab->elf.sgot->output_offset + off);
3627 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3628 if (r_type == R_SPARC_TLS_IE_HI22
3629 || r_type == R_SPARC_TLS_IE_LO10)
3630 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3631 else
3632 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3633 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3634 outrel.r_addend = relocation - dtpoff_base (info);
3635 else
3636 outrel.r_addend = 0;
3637 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3638 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3639
3640 if (r_type == R_SPARC_TLS_GD_HI22
3641 || r_type == R_SPARC_TLS_GD_LO10)
3642 {
3643 if (indx == 0)
3644 {
3645 BFD_ASSERT (! unresolved_reloc);
3646 SPARC_ELF_PUT_WORD (htab, output_bfd,
3647 relocation - dtpoff_base (info),
3648 (htab->elf.sgot->contents + off
3649 + SPARC_ELF_WORD_BYTES (htab)));
3650 }
3651 else
3652 {
3653 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3654 (htab->elf.sgot->contents + off
3655 + SPARC_ELF_WORD_BYTES (htab)));
3656 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3657 SPARC_ELF_DTPOFF_RELOC (htab));
3658 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3659 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3660 &outrel);
3661 }
3662 }
3663 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3664 {
3665 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3666 (htab->elf.sgot->contents + off
3667 + SPARC_ELF_WORD_BYTES (htab)));
3668 }
3669 }
3670
3671 if (off >= (bfd_vma) -2)
3672 abort ();
3673
3674 relocation = htab->elf.sgot->output_offset + off - got_base;
3675 unresolved_reloc = FALSE;
3676 howto = _bfd_sparc_elf_howto_table + r_type;
3677 break;
3678
3679 case R_SPARC_TLS_LDM_HI22:
3680 case R_SPARC_TLS_LDM_LO10:
3681 /* LD -> LE */
3682 if (bfd_link_executable (info))
3683 {
3684 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3685 continue;
3686 }
3687 off = htab->tls_ldm_got.offset;
3688 htab->tls_ldm_got.offset |= 1;
3689 goto r_sparc_tlsldm;
3690
3691 case R_SPARC_TLS_LDO_HIX22:
3692 case R_SPARC_TLS_LDO_LOX10:
3693 /* LD -> LE */
3694 if (bfd_link_executable (info))
3695 {
3696 if (r_type == R_SPARC_TLS_LDO_HIX22)
3697 r_type = R_SPARC_TLS_LE_HIX22;
3698 else
3699 r_type = R_SPARC_TLS_LE_LOX10;
3700 }
3701 else
3702 {
3703 relocation -= dtpoff_base (info);
3704 break;
3705 }
3706 /* Fall through. */
3707
3708 case R_SPARC_TLS_LE_HIX22:
3709 case R_SPARC_TLS_LE_LOX10:
3710 if (!bfd_link_executable (info))
3711 {
3712 Elf_Internal_Rela outrel;
3713 bfd_vma offset
3714 = _bfd_elf_section_offset (output_bfd, info, input_section,
3715 rel->r_offset);
3716 if (offset == (bfd_vma) -1 || offset == (bfd_vma) -2)
3717 memset (&outrel, 0, sizeof outrel);
3718 else
3719 {
3720 outrel.r_offset = offset
3721 + input_section->output_section->vma
3722 + input_section->output_offset;
3723 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3724 outrel.r_addend
3725 = relocation - dtpoff_base (info) + rel->r_addend;
3726 }
3727
3728 BFD_ASSERT (sreloc != NULL);
3729 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3730 continue;
3731 }
3732 relocation = tpoff (info, relocation);
3733 break;
3734
3735 case R_SPARC_TLS_LDM_CALL:
3736 /* LD -> LE */
3737 if (bfd_link_executable (info))
3738 {
3739 /* mov %g0, %o0 */
3740 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3741 continue;
3742 }
3743 /* Fall through */
3744
3745 case R_SPARC_TLS_GD_CALL:
3746 if (h != NULL)
3747 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3748 else if (local_got_offsets)
3749 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3750 else
3751 tls_type = GOT_UNKNOWN;
3752 /* GD -> IE or LE */
3753 if (bfd_link_executable (info)
3754 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3755 {
3756 Elf_Internal_Rela *rel2;
3757 bfd_vma insn;
3758
3759 /* GD -> LE */
3760 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3761 {
3762 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3763 continue;
3764 }
3765
3766 /* GD -> IE */
3767 if (rel + 1 < relend
3768 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3769 && rel[1].r_offset == rel->r_offset + 4
3770 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3771 && (((insn = bfd_get_32 (input_bfd,
3772 contents + rel[1].r_offset))
3773 >> 25) & 0x1f) == 8)
3774 {
3775 /* We have
3776 call __tls_get_addr, %tgd_call(foo)
3777 add %reg1, %reg2, %o0, %tgd_add(foo)
3778 and change it into IE:
3779 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3780 add %g7, %o0, %o0, %tie_add(foo).
3781 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3782 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3783 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3784 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3785 contents + rel->r_offset);
3786 bfd_put_32 (output_bfd, 0x9001c008,
3787 contents + rel->r_offset + 4);
3788 rel++;
3789 continue;
3790 }
3791
3792 /* We cannot just overwrite the delay slot instruction,
3793 as it might be what puts the %o0 argument to
3794 __tls_get_addr into place. So we have to transpose
3795 the delay slot with the add we patch in. */
3796 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3797 bfd_put_32 (output_bfd, insn,
3798 contents + rel->r_offset);
3799 bfd_put_32 (output_bfd, 0x9001c008,
3800 contents + rel->r_offset + 4);
3801
3802 rel2 = rel;
3803 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3804 rel->r_offset + 4))
3805 != NULL)
3806 {
3807 /* If the instruction we moved has a relocation attached to
3808 it, adjust the offset so that it will apply to the correct
3809 instruction. */
3810 rel2->r_offset -= 4;
3811 }
3812 continue;
3813 }
3814
3815 h = (struct elf_link_hash_entry *)
3816 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3817 FALSE, TRUE);
3818 BFD_ASSERT (h != NULL);
3819 r_type = R_SPARC_WPLT30;
3820 howto = _bfd_sparc_elf_howto_table + r_type;
3821 goto r_sparc_wplt30;
3822
3823 case R_SPARC_TLS_GD_ADD:
3824 if (h != NULL)
3825 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3826 else if (local_got_offsets)
3827 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3828 else
3829 tls_type = GOT_UNKNOWN;
3830 /* GD -> IE or LE */
3831 if (bfd_link_executable (info) || tls_type == GOT_TLS_IE)
3832 {
3833 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3834 changed into IE:
3835 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3836 or LE:
3837 add %g7, %reg2, %reg3. */
3838 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3839 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3840 relocation = (insn & ~0x7c000) | 0x1c000;
3841 else
3842 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3843 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3844 }
3845 continue;
3846
3847 case R_SPARC_TLS_LDM_ADD:
3848 /* LD -> LE */
3849 if (bfd_link_executable (info))
3850 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3851 continue;
3852
3853 case R_SPARC_TLS_LDO_ADD:
3854 /* LD -> LE */
3855 if (bfd_link_executable (info))
3856 {
3857 /* Change rs1 into %g7. */
3858 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3859 insn = (insn & ~0x7c000) | 0x1c000;
3860 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3861 }
3862 continue;
3863
3864 case R_SPARC_TLS_IE_LD:
3865 case R_SPARC_TLS_IE_LDX:
3866 /* IE -> LE */
3867 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3868 {
3869 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3870 int rs2 = insn & 0x1f;
3871 int rd = (insn >> 25) & 0x1f;
3872
3873 if (rs2 == rd)
3874 relocation = SPARC_NOP;
3875 else
3876 relocation = 0x80100000 | (insn & 0x3e00001f);
3877 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3878 }
3879 continue;
3880
3881 case R_SPARC_TLS_IE_ADD:
3882 /* Totally useless relocation. */
3883 continue;
3884
3885 case R_SPARC_TLS_DTPOFF32:
3886 case R_SPARC_TLS_DTPOFF64:
3887 relocation -= dtpoff_base (info);
3888 break;
3889
3890 default:
3891 break;
3892 }
3893
3894 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3895 because such sections are not SEC_ALLOC and thus ld.so will
3896 not process them. */
3897 if (unresolved_reloc
3898 && !((input_section->flags & SEC_DEBUGGING) != 0
3899 && h->def_dynamic)
3900 && _bfd_elf_section_offset (output_bfd, info, input_section,
3901 rel->r_offset) != (bfd_vma) -1)
3902 _bfd_error_handler
3903 /* xgettext:c-format */
3904 (_("%pB(%pA+%#" PRIx64 "): "
3905 "unresolvable %s relocation against symbol `%s'"),
3906 input_bfd,
3907 input_section,
3908 (uint64_t) rel->r_offset,
3909 howto->name,
3910 h->root.root.string);
3911
3912 r = bfd_reloc_continue;
3913 if (r_type == R_SPARC_OLO10)
3914 {
3915 bfd_vma x;
3916
3917 if (! ABI_64_P (output_bfd))
3918 abort ();
3919
3920 relocation += rel->r_addend;
3921 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3922
3923 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3924 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3925 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3926
3927 r = bfd_check_overflow (howto->complain_on_overflow,
3928 howto->bitsize, howto->rightshift,
3929 bfd_arch_bits_per_address (input_bfd),
3930 relocation);
3931 }
3932 else if (r_type == R_SPARC_WDISP16)
3933 {
3934 bfd_vma x;
3935
3936 relocation += rel->r_addend;
3937 relocation -= (input_section->output_section->vma
3938 + input_section->output_offset);
3939 relocation -= rel->r_offset;
3940
3941 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3942 x |= ((((relocation >> 2) & 0xc000) << 6)
3943 | ((relocation >> 2) & 0x3fff));
3944 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3945
3946 r = bfd_check_overflow (howto->complain_on_overflow,
3947 howto->bitsize, howto->rightshift,
3948 bfd_arch_bits_per_address (input_bfd),
3949 relocation);
3950 }
3951 else if (r_type == R_SPARC_WDISP10)
3952 {
3953 bfd_vma x;
3954
3955 relocation += rel->r_addend;
3956 relocation -= (input_section->output_section->vma
3957 + input_section->output_offset);
3958 relocation -= rel->r_offset;
3959
3960 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3961 x |= ((((relocation >> 2) & 0x300) << 11)
3962 | (((relocation >> 2) & 0xff) << 5));
3963 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3964
3965 r = bfd_check_overflow (howto->complain_on_overflow,
3966 howto->bitsize, howto->rightshift,
3967 bfd_arch_bits_per_address (input_bfd),
3968 relocation);
3969 }
3970 else if (r_type == R_SPARC_REV32)
3971 {
3972 bfd_vma x;
3973
3974 relocation = relocation + rel->r_addend;
3975
3976 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3977 x = x + relocation;
3978 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3979 r = bfd_reloc_ok;
3980 }
3981 else if (r_type == R_SPARC_TLS_LDO_HIX22
3982 || r_type == R_SPARC_TLS_LE_HIX22)
3983 {
3984 bfd_vma x;
3985
3986 relocation += rel->r_addend;
3987 if (r_type == R_SPARC_TLS_LE_HIX22)
3988 relocation ^= MINUS_ONE;
3989
3990 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3991 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3992 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3993 r = bfd_reloc_ok;
3994 }
3995 else if (r_type == R_SPARC_TLS_LDO_LOX10
3996 || r_type == R_SPARC_TLS_LE_LOX10)
3997 {
3998 bfd_vma x;
3999
4000 relocation += rel->r_addend;
4001 relocation &= 0x3ff;
4002 if (r_type == R_SPARC_TLS_LE_LOX10)
4003 relocation |= 0x1c00;
4004
4005 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4006 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4007 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4008
4009 r = bfd_reloc_ok;
4010 }
4011 else if (r_type == R_SPARC_HIX22
4012 || r_type == R_SPARC_GOTDATA_HIX22
4013 || r_type == R_SPARC_GOTDATA_OP_HIX22)
4014 {
4015 bfd_vma x;
4016
4017 relocation += rel->r_addend;
4018 if (r_type == R_SPARC_HIX22
4019 || (bfd_signed_vma) relocation < 0)
4020 relocation = relocation ^ MINUS_ONE;
4021
4022 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4023 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4024 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4025
4026 r = bfd_check_overflow (howto->complain_on_overflow,
4027 howto->bitsize, howto->rightshift,
4028 bfd_arch_bits_per_address (input_bfd),
4029 relocation);
4030 }
4031 else if (r_type == R_SPARC_LOX10
4032 || r_type == R_SPARC_GOTDATA_LOX10
4033 || r_type == R_SPARC_GOTDATA_OP_LOX10)
4034 {
4035 bfd_vma x;
4036
4037 relocation += rel->r_addend;
4038 if (r_type == R_SPARC_LOX10
4039 || (bfd_signed_vma) relocation < 0)
4040 relocation = (relocation & 0x3ff) | 0x1c00;
4041 else
4042 relocation = (relocation & 0x3ff);
4043
4044 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4045 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4046 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4047
4048 r = bfd_reloc_ok;
4049 }
4050 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4051 && sec_do_relax (input_section)
4052 && rel->r_offset + 4 < input_section->size)
4053 {
4054 #define G0 0
4055 #define O7 15
4056 #define XCC (2 << 20)
4057 #define COND(x) (((x)&0xf)<<25)
4058 #define CONDA COND(0x8)
4059 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4060 #define INSN_BA (F2(0,2) | CONDA)
4061 #define INSN_OR F3(2, 0x2, 0)
4062 #define INSN_NOP F2(0,4)
4063
4064 bfd_vma x, y;
4065
4066 /* If the instruction is a call with either:
4067 restore
4068 arithmetic instruction with rd == %o7
4069 where rs1 != %o7 and rs2 if it is register != %o7
4070 then we can optimize if the call destination is near
4071 by changing the call into a branch always. */
4072 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4073 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4074 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4075 {
4076 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4077 || ((y & OP3(0x28)) == 0 /* arithmetic */
4078 && (y & RD(~0)) == RD(O7)))
4079 && (y & RS1(~0)) != RS1(O7)
4080 && ((y & F3I(~0))
4081 || (y & RS2(~0)) != RS2(O7)))
4082 {
4083 bfd_vma reloc;
4084
4085 reloc = relocation + rel->r_addend - rel->r_offset;
4086 reloc -= (input_section->output_section->vma
4087 + input_section->output_offset);
4088
4089 /* Ensure the branch fits into simm22. */
4090 if ((reloc & 3) == 0
4091 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4092 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4093 {
4094 reloc >>= 2;
4095
4096 /* Check whether it fits into simm19. */
4097 if (((reloc & 0x3c0000) == 0
4098 || (reloc & 0x3c0000) == 0x3c0000)
4099 && (ABI_64_P (output_bfd)
4100 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4101 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4102 else
4103 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4104 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4105 r = bfd_reloc_ok;
4106 if (rel->r_offset >= 4
4107 && (y & (0xffffffff ^ RS1(~0)))
4108 == (INSN_OR | RD(O7) | RS2(G0)))
4109 {
4110 bfd_vma z;
4111 unsigned int reg;
4112
4113 z = bfd_get_32 (input_bfd,
4114 contents + rel->r_offset - 4);
4115 if ((z & (0xffffffff ^ RD(~0)))
4116 != (INSN_OR | RS1(O7) | RS2(G0)))
4117 continue;
4118
4119 /* The sequence was
4120 or %o7, %g0, %rN
4121 call foo
4122 or %rN, %g0, %o7
4123
4124 If call foo was replaced with ba, replace
4125 or %rN, %g0, %o7 with nop. */
4126
4127 reg = (y & RS1(~0)) >> 14;
4128 if (reg != ((z & RD(~0)) >> 25)
4129 || reg == G0 || reg == O7)
4130 continue;
4131
4132 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4133 contents + rel->r_offset + 4);
4134 }
4135
4136 }
4137 }
4138 }
4139 }
4140
4141 if (r == bfd_reloc_continue)
4142 {
4143 do_relocation:
4144 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4145 contents, rel->r_offset,
4146 relocation, rel->r_addend);
4147 }
4148 if (r != bfd_reloc_ok)
4149 {
4150 switch (r)
4151 {
4152 default:
4153 case bfd_reloc_outofrange:
4154 abort ();
4155 case bfd_reloc_overflow:
4156 {
4157 const char *name;
4158
4159 /* The Solaris native linker silently disregards overflows.
4160 We don't, but this breaks stabs debugging info, whose
4161 relocations are only 32-bits wide. Ignore overflows in
4162 this case and also for discarded entries. */
4163 if ((r_type == R_SPARC_32
4164 || r_type == R_SPARC_UA32
4165 || r_type == R_SPARC_DISP32)
4166 && (((input_section->flags & SEC_DEBUGGING) != 0
4167 && strcmp (bfd_section_name (input_bfd,
4168 input_section),
4169 ".stab") == 0)
4170 || _bfd_elf_section_offset (output_bfd, info,
4171 input_section,
4172 rel->r_offset)
4173 == (bfd_vma)-1))
4174 break;
4175
4176 if (h != NULL)
4177 {
4178 /* Assume this is a call protected by other code that
4179 detect the symbol is undefined. If this is the case,
4180 we can safely ignore the overflow. If not, the
4181 program is hosed anyway, and a little warning isn't
4182 going to help. */
4183 if (h->root.type == bfd_link_hash_undefweak
4184 && howto->pc_relative)
4185 break;
4186
4187 name = NULL;
4188 }
4189 else
4190 {
4191 name = bfd_elf_string_from_elf_section (input_bfd,
4192 symtab_hdr->sh_link,
4193 sym->st_name);
4194 if (name == NULL)
4195 return FALSE;
4196 if (*name == '\0')
4197 name = bfd_section_name (input_bfd, sec);
4198 }
4199 (*info->callbacks->reloc_overflow)
4200 (info, (h ? &h->root : NULL), name, howto->name,
4201 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4202 }
4203 break;
4204 }
4205 }
4206 }
4207
4208 return TRUE;
4209 }
4210
4211 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4212 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4213 is the offset of the associated .got.plt entry from
4214 _GLOBAL_OFFSET_TABLE_. */
4215
4216 static void
4217 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4218 bfd_vma plt_offset, bfd_vma plt_index,
4219 bfd_vma got_offset)
4220 {
4221 bfd_vma got_base;
4222 const bfd_vma *plt_entry;
4223 struct _bfd_sparc_elf_link_hash_table *htab;
4224 bfd_byte *loc;
4225 Elf_Internal_Rela rela;
4226
4227 htab = _bfd_sparc_elf_hash_table (info);
4228 BFD_ASSERT (htab != NULL);
4229
4230 if (bfd_link_pic (info))
4231 {
4232 plt_entry = sparc_vxworks_shared_plt_entry;
4233 got_base = 0;
4234 }
4235 else
4236 {
4237 plt_entry = sparc_vxworks_exec_plt_entry;
4238 got_base = (htab->elf.hgot->root.u.def.value
4239 + htab->elf.hgot->root.u.def.section->output_offset
4240 + htab->elf.hgot->root.u.def.section->output_section->vma);
4241 }
4242
4243 /* Fill in the entry in the procedure linkage table. */
4244 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4245 htab->elf.splt->contents + plt_offset);
4246 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4247 htab->elf.splt->contents + plt_offset + 4);
4248 bfd_put_32 (output_bfd, plt_entry[2],
4249 htab->elf.splt->contents + plt_offset + 8);
4250 bfd_put_32 (output_bfd, plt_entry[3],
4251 htab->elf.splt->contents + plt_offset + 12);
4252 bfd_put_32 (output_bfd, plt_entry[4],
4253 htab->elf.splt->contents + plt_offset + 16);
4254 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4255 htab->elf.splt->contents + plt_offset + 20);
4256 /* PC-relative displacement for a branch to the start of
4257 the PLT section. */
4258 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4259 & 0x003fffff),
4260 htab->elf.splt->contents + plt_offset + 24);
4261 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4262 htab->elf.splt->contents + plt_offset + 28);
4263
4264 /* Fill in the .got.plt entry, pointing initially at the
4265 second half of the PLT entry. */
4266 BFD_ASSERT (htab->elf.sgotplt != NULL);
4267 bfd_put_32 (output_bfd,
4268 htab->elf.splt->output_section->vma
4269 + htab->elf.splt->output_offset
4270 + plt_offset + 20,
4271 htab->elf.sgotplt->contents + got_offset);
4272
4273 /* Add relocations to .rela.plt.unloaded. */
4274 if (!bfd_link_pic (info))
4275 {
4276 loc = (htab->srelplt2->contents
4277 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4278
4279 /* Relocate the initial sethi. */
4280 rela.r_offset = (htab->elf.splt->output_section->vma
4281 + htab->elf.splt->output_offset
4282 + plt_offset);
4283 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4284 rela.r_addend = got_offset;
4285 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4286 loc += sizeof (Elf32_External_Rela);
4287
4288 /* Likewise the following or. */
4289 rela.r_offset += 4;
4290 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4291 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4292 loc += sizeof (Elf32_External_Rela);
4293
4294 /* Relocate the .got.plt entry. */
4295 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4296 + htab->elf.sgotplt->output_offset
4297 + got_offset);
4298 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4299 rela.r_addend = plt_offset + 20;
4300 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4301 }
4302 }
4303
4304 /* Finish up dynamic symbol handling. We set the contents of various
4305 dynamic sections here. */
4306
4307 bfd_boolean
4308 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4309 struct bfd_link_info *info,
4310 struct elf_link_hash_entry *h,
4311 Elf_Internal_Sym *sym)
4312 {
4313 struct _bfd_sparc_elf_link_hash_table *htab;
4314 const struct elf_backend_data *bed;
4315 struct _bfd_sparc_elf_link_hash_entry *eh;
4316 bfd_boolean resolved_to_zero;
4317
4318 htab = _bfd_sparc_elf_hash_table (info);
4319 BFD_ASSERT (htab != NULL);
4320 bed = get_elf_backend_data (output_bfd);
4321
4322 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
4323
4324 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
4325 resolved undefined weak symbols in executable so that their
4326 references have value 0 at run-time. */
4327 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
4328
4329 if (h->plt.offset != (bfd_vma) -1)
4330 {
4331 asection *splt;
4332 asection *srela;
4333 Elf_Internal_Rela rela;
4334 bfd_byte *loc;
4335 bfd_vma r_offset, got_offset;
4336 int rela_index;
4337
4338 /* When building a static executable, use .iplt and
4339 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4340 if (htab->elf.splt != NULL)
4341 {
4342 splt = htab->elf.splt;
4343 srela = htab->elf.srelplt;
4344 }
4345 else
4346 {
4347 splt = htab->elf.iplt;
4348 srela = htab->elf.irelplt;
4349 }
4350
4351 if (splt == NULL || srela == NULL)
4352 abort ();
4353
4354 /* Fill in the entry in the .rela.plt section. */
4355 if (htab->is_vxworks)
4356 {
4357 /* Work out the index of this PLT entry. */
4358 rela_index = ((h->plt.offset - htab->plt_header_size)
4359 / htab->plt_entry_size);
4360
4361 /* Calculate the offset of the associated .got.plt entry.
4362 The first three entries are reserved. */
4363 got_offset = (rela_index + 3) * 4;
4364
4365 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4366 rela_index, got_offset);
4367
4368
4369 /* On VxWorks, the relocation points to the .got.plt entry,
4370 not the .plt entry. */
4371 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4372 + htab->elf.sgotplt->output_offset
4373 + got_offset);
4374 rela.r_addend = 0;
4375 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4376 R_SPARC_JMP_SLOT);
4377 }
4378 else
4379 {
4380 bfd_boolean ifunc = FALSE;
4381
4382 /* Fill in the entry in the procedure linkage table. */
4383 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4384 h->plt.offset, splt->size,
4385 &r_offset);
4386
4387 if (h == NULL
4388 || h->dynindx == -1
4389 || ((bfd_link_executable (info)
4390 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4391 && h->def_regular
4392 && h->type == STT_GNU_IFUNC))
4393 {
4394 ifunc = TRUE;
4395 BFD_ASSERT (h == NULL
4396 || (h->type == STT_GNU_IFUNC
4397 && h->def_regular
4398 && (h->root.type == bfd_link_hash_defined
4399 || h->root.type == bfd_link_hash_defweak)));
4400 }
4401
4402 rela.r_offset = r_offset
4403 + (splt->output_section->vma + splt->output_offset);
4404 if (ABI_64_P (output_bfd)
4405 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4406 {
4407 if (ifunc)
4408 {
4409 rela.r_addend = (h->root.u.def.section->output_section->vma
4410 + h->root.u.def.section->output_offset
4411 + h->root.u.def.value);
4412 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4413 R_SPARC_IRELATIVE);
4414 }
4415 else
4416 {
4417 rela.r_addend = (-(h->plt.offset + 4)
4418 - splt->output_section->vma
4419 - splt->output_offset);
4420 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4421 R_SPARC_JMP_SLOT);
4422 }
4423 }
4424 else
4425 {
4426 if (ifunc)
4427 {
4428 rela.r_addend = (h->root.u.def.section->output_section->vma
4429 + h->root.u.def.section->output_offset
4430 + h->root.u.def.value);
4431 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4432 R_SPARC_JMP_IREL);
4433 }
4434 else
4435 {
4436 rela.r_addend = 0;
4437 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4438 R_SPARC_JMP_SLOT);
4439 }
4440 }
4441 }
4442
4443 /* Adjust for the first 4 reserved elements in the .plt section
4444 when setting the offset in the .rela.plt section.
4445 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4446 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4447
4448 loc = srela->contents;
4449 loc += rela_index * bed->s->sizeof_rela;
4450 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4451
4452 if (!resolved_to_zero && !h->def_regular)
4453 {
4454 /* Mark the symbol as undefined, rather than as defined in
4455 the .plt section. Leave the value alone. */
4456 sym->st_shndx = SHN_UNDEF;
4457 /* If the symbol is weak, we do need to clear the value.
4458 Otherwise, the PLT entry would provide a definition for
4459 the symbol even if the symbol wasn't defined anywhere,
4460 and so the symbol would never be NULL. */
4461 if (!h->ref_regular_nonweak)
4462 sym->st_value = 0;
4463 }
4464 }
4465
4466 /* Don't generate dynamic GOT relocation against resolved undefined weak
4467 symbols in an executable. */
4468 if (h->got.offset != (bfd_vma) -1
4469 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4470 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE
4471 && !(h->root.type == bfd_link_hash_undefweak
4472 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4473 || resolved_to_zero)))
4474 {
4475 asection *sgot;
4476 asection *srela;
4477 Elf_Internal_Rela rela;
4478
4479 /* This symbol has an entry in the GOT. Set it up. */
4480
4481 sgot = htab->elf.sgot;
4482 srela = htab->elf.srelgot;
4483 BFD_ASSERT (sgot != NULL && srela != NULL);
4484
4485 rela.r_offset = (sgot->output_section->vma
4486 + sgot->output_offset
4487 + (h->got.offset &~ (bfd_vma) 1));
4488
4489 /* If this is a -Bsymbolic link, and the symbol is defined
4490 locally, we just want to emit a RELATIVE reloc. Likewise if
4491 the symbol was forced to be local because of a version file.
4492 The entry in the global offset table will already have been
4493 initialized in the relocate_section function. */
4494 if (! bfd_link_pic (info)
4495 && h->type == STT_GNU_IFUNC
4496 && h->def_regular)
4497 {
4498 asection *plt;
4499
4500 /* We load the GOT entry with the PLT entry. */
4501 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4502 SPARC_ELF_PUT_WORD (htab, output_bfd,
4503 (plt->output_section->vma
4504 + plt->output_offset + h->plt.offset),
4505 htab->elf.sgot->contents
4506 + (h->got.offset & ~(bfd_vma) 1));
4507 return TRUE;
4508 }
4509
4510 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
4511 {
4512 asection *sec = h->root.u.def.section;
4513 if (h->type == STT_GNU_IFUNC)
4514 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4515 else
4516 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4517 rela.r_addend = (h->root.u.def.value
4518 + sec->output_section->vma
4519 + sec->output_offset);
4520 }
4521 else
4522 {
4523 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4524 rela.r_addend = 0;
4525 }
4526
4527 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4528 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4529 sparc_elf_append_rela (output_bfd, srela, &rela);
4530 }
4531
4532 if (h->needs_copy)
4533 {
4534 asection *s;
4535 Elf_Internal_Rela rela;
4536
4537 /* This symbols needs a copy reloc. Set it up. */
4538 BFD_ASSERT (h->dynindx != -1);
4539
4540 rela.r_offset = (h->root.u.def.value
4541 + h->root.u.def.section->output_section->vma
4542 + h->root.u.def.section->output_offset);
4543 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4544 rela.r_addend = 0;
4545 if (h->root.u.def.section == htab->elf.sdynrelro)
4546 s = htab->elf.sreldynrelro;
4547 else
4548 s = htab->elf.srelbss;
4549 sparc_elf_append_rela (output_bfd, s, &rela);
4550 }
4551
4552 /* Mark some specially defined symbols as absolute. On VxWorks,
4553 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4554 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4555 if (sym != NULL
4556 && (h == htab->elf.hdynamic
4557 || (!htab->is_vxworks
4558 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4559 sym->st_shndx = SHN_ABS;
4560
4561 return TRUE;
4562 }
4563
4564 /* Finish up the dynamic sections. */
4565
4566 static bfd_boolean
4567 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4568 bfd *dynobj, asection *sdyn,
4569 asection *splt ATTRIBUTE_UNUSED)
4570 {
4571 struct _bfd_sparc_elf_link_hash_table *htab;
4572 const struct elf_backend_data *bed;
4573 bfd_byte *dyncon, *dynconend;
4574 size_t dynsize;
4575 int stt_regidx = -1;
4576 bfd_boolean abi_64_p;
4577
4578 htab = _bfd_sparc_elf_hash_table (info);
4579 BFD_ASSERT (htab != NULL);
4580 bed = get_elf_backend_data (output_bfd);
4581 dynsize = bed->s->sizeof_dyn;
4582 dynconend = sdyn->contents + sdyn->size;
4583 abi_64_p = ABI_64_P (output_bfd);
4584 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4585 {
4586 Elf_Internal_Dyn dyn;
4587 bfd_boolean size;
4588
4589 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4590
4591 if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4592 {
4593 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4594 not to the start of the PLT. */
4595 if (htab->elf.sgotplt)
4596 {
4597 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4598 + htab->elf.sgotplt->output_offset);
4599 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4600 }
4601 }
4602 else if (htab->is_vxworks
4603 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4604 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4605 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4606 {
4607 if (stt_regidx == -1)
4608 {
4609 stt_regidx =
4610 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4611 if (stt_regidx == -1)
4612 return FALSE;
4613 }
4614 dyn.d_un.d_val = stt_regidx++;
4615 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4616 }
4617 else
4618 {
4619 asection *s;
4620
4621 switch (dyn.d_tag)
4622 {
4623 case DT_PLTGOT:
4624 s = htab->elf.splt;
4625 size = FALSE;
4626 break;
4627 case DT_PLTRELSZ:
4628 s = htab->elf.srelplt;
4629 size = TRUE;
4630 break;
4631 case DT_JMPREL:
4632 s = htab->elf.srelplt;
4633 size = FALSE;
4634 break;
4635 default:
4636 continue;
4637 }
4638
4639 if (s == NULL)
4640 dyn.d_un.d_val = 0;
4641 else
4642 {
4643 if (!size)
4644 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4645 else
4646 dyn.d_un.d_val = s->size;
4647 }
4648 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4649 }
4650 }
4651 return TRUE;
4652 }
4653
4654 /* Install the first PLT entry in a VxWorks executable and make sure that
4655 .rela.plt.unloaded relocations have the correct symbol indexes. */
4656
4657 static void
4658 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4659 {
4660 struct _bfd_sparc_elf_link_hash_table *htab;
4661 Elf_Internal_Rela rela;
4662 bfd_vma got_base;
4663 bfd_byte *loc;
4664
4665 htab = _bfd_sparc_elf_hash_table (info);
4666 BFD_ASSERT (htab != NULL);
4667
4668 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4669 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4670 + htab->elf.hgot->root.u.def.section->output_offset
4671 + htab->elf.hgot->root.u.def.value);
4672
4673 /* Install the initial PLT entry. */
4674 bfd_put_32 (output_bfd,
4675 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4676 htab->elf.splt->contents);
4677 bfd_put_32 (output_bfd,
4678 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4679 htab->elf.splt->contents + 4);
4680 bfd_put_32 (output_bfd,
4681 sparc_vxworks_exec_plt0_entry[2],
4682 htab->elf.splt->contents + 8);
4683 bfd_put_32 (output_bfd,
4684 sparc_vxworks_exec_plt0_entry[3],
4685 htab->elf.splt->contents + 12);
4686 bfd_put_32 (output_bfd,
4687 sparc_vxworks_exec_plt0_entry[4],
4688 htab->elf.splt->contents + 16);
4689
4690 loc = htab->srelplt2->contents;
4691
4692 /* Add an unloaded relocation for the initial entry's "sethi". */
4693 rela.r_offset = (htab->elf.splt->output_section->vma
4694 + htab->elf.splt->output_offset);
4695 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4696 rela.r_addend = 8;
4697 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4698 loc += sizeof (Elf32_External_Rela);
4699
4700 /* Likewise the following "or". */
4701 rela.r_offset += 4;
4702 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4703 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4704 loc += sizeof (Elf32_External_Rela);
4705
4706 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4707 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4708 in which symbols were output. */
4709 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4710 {
4711 Elf_Internal_Rela rel;
4712
4713 /* The entry's initial "sethi" (against _G_O_T_). */
4714 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4715 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4716 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4717 loc += sizeof (Elf32_External_Rela);
4718
4719 /* The following "or" (also against _G_O_T_). */
4720 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4721 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4722 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4723 loc += sizeof (Elf32_External_Rela);
4724
4725 /* The .got.plt entry (against _P_L_T_). */
4726 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4727 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4728 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4729 loc += sizeof (Elf32_External_Rela);
4730 }
4731 }
4732
4733 /* Install the first PLT entry in a VxWorks shared object. */
4734
4735 static void
4736 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4737 {
4738 struct _bfd_sparc_elf_link_hash_table *htab;
4739 unsigned int i;
4740
4741 htab = _bfd_sparc_elf_hash_table (info);
4742 BFD_ASSERT (htab != NULL);
4743
4744 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4745 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4746 htab->elf.splt->contents + i * 4);
4747 }
4748
4749 /* Finish up local dynamic symbol handling. We set the contents of
4750 various dynamic sections here. */
4751
4752 static bfd_boolean
4753 finish_local_dynamic_symbol (void **slot, void *inf)
4754 {
4755 struct elf_link_hash_entry *h
4756 = (struct elf_link_hash_entry *) *slot;
4757 struct bfd_link_info *info
4758 = (struct bfd_link_info *) inf;
4759
4760 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4761 h, NULL);
4762 }
4763
4764 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4765 here since undefined weak symbol may not be dynamic and may not be
4766 called for _bfd_sparc_elf_finish_dynamic_symbol. */
4767
4768 static bfd_boolean
4769 pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4770 void *inf)
4771 {
4772 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4773 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4774
4775 if (h->root.type != bfd_link_hash_undefweak
4776 || h->dynindx != -1)
4777 return TRUE;
4778
4779 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4780 h, NULL);
4781 }
4782
4783 bfd_boolean
4784 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4785 {
4786 bfd *dynobj;
4787 asection *sdyn;
4788 struct _bfd_sparc_elf_link_hash_table *htab;
4789
4790 htab = _bfd_sparc_elf_hash_table (info);
4791 BFD_ASSERT (htab != NULL);
4792 dynobj = htab->elf.dynobj;
4793
4794 /* We arranged in size_dynamic_sections to put the STT_REGISTER
4795 entries at the end of the dynlocal list, so they came at the end
4796 of the local symbols in the symtab. Except that they aren't
4797 STB_LOCAL, so we need to back up symtab->sh_info. */
4798 if (ABI_64_P (output_bfd)
4799 && elf_hash_table (info)->dynlocal)
4800 {
4801 asection *dynsymsec = bfd_get_linker_section (dynobj, ".dynsym");
4802 struct elf_link_local_dynamic_entry *e;
4803
4804 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
4805 if (e->input_indx == -1)
4806 break;
4807 if (e)
4808 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
4809 = e->dynindx;
4810 }
4811
4812 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4813
4814 if (elf_hash_table (info)->dynamic_sections_created)
4815 {
4816 asection *splt;
4817
4818 splt = htab->elf.splt;
4819 BFD_ASSERT (splt != NULL && sdyn != NULL);
4820
4821 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4822 return FALSE;
4823
4824 /* Initialize the contents of the .plt section. */
4825 if (splt->size > 0)
4826 {
4827 if (htab->is_vxworks)
4828 {
4829 if (bfd_link_pic (info))
4830 sparc_vxworks_finish_shared_plt (output_bfd, info);
4831 else
4832 sparc_vxworks_finish_exec_plt (output_bfd, info);
4833 }
4834 else
4835 {
4836 memset (splt->contents, 0, htab->plt_header_size);
4837 if (!ABI_64_P (output_bfd))
4838 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4839 splt->contents + splt->size - 4);
4840 }
4841 }
4842
4843 if (elf_section_data (splt->output_section) != NULL)
4844 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4845 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4846 ? 0 : htab->plt_entry_size);
4847 }
4848
4849 /* Set the first entry in the global offset table to the address of
4850 the dynamic section. */
4851 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4852 {
4853 bfd_vma val = (sdyn ?
4854 sdyn->output_section->vma + sdyn->output_offset :
4855 0);
4856
4857 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4858 }
4859
4860 if (htab->elf.sgot)
4861 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4862 SPARC_ELF_WORD_BYTES (htab);
4863
4864 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4865 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4866
4867 /* Fill PLT entries for undefined weak symbols in PIE. */
4868 if (bfd_link_pie (info))
4869 bfd_hash_traverse (&info->hash->table,
4870 pie_finish_undefweak_symbol,
4871 info);
4872 return TRUE;
4873 }
4874
4875 \f
4876 /* Set the right machine number for a SPARC ELF file. */
4877
4878 bfd_boolean
4879 _bfd_sparc_elf_object_p (bfd *abfd)
4880 {
4881 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4882 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4883 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4884
4885 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4886 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4887 | ELF_SPARC_HWCAP_VIS3
4888 | ELF_SPARC_HWCAP_HPC);
4889 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4890 | ELF_SPARC_HWCAP_DES
4891 | ELF_SPARC_HWCAP_KASUMI
4892 | ELF_SPARC_HWCAP_CAMELLIA
4893 | ELF_SPARC_HWCAP_MD5
4894 | ELF_SPARC_HWCAP_SHA1
4895 | ELF_SPARC_HWCAP_SHA256
4896 | ELF_SPARC_HWCAP_SHA512
4897 | ELF_SPARC_HWCAP_MPMUL
4898 | ELF_SPARC_HWCAP_MONT
4899 | ELF_SPARC_HWCAP_CRC32C
4900 | ELF_SPARC_HWCAP_CBCOND
4901 | ELF_SPARC_HWCAP_PAUSE);
4902 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4903 | ELF_SPARC_HWCAP_IMA);
4904 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4905 | ELF_SPARC_HWCAP2_MWAIT
4906 | ELF_SPARC_HWCAP2_XMPMUL
4907 | ELF_SPARC_HWCAP2_XMONT);
4908 unsigned int m8_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC6
4909 | ELF_SPARC_HWCAP2_ONADDSUB
4910 | ELF_SPARC_HWCAP2_ONMUL
4911 | ELF_SPARC_HWCAP2_ONDIV
4912 | ELF_SPARC_HWCAP2_DICTUNP
4913 | ELF_SPARC_HWCAP2_FPCMPSHL
4914 | ELF_SPARC_HWCAP2_RLE
4915 | ELF_SPARC_HWCAP2_SHA3);
4916
4917 if (ABI_64_P (abfd))
4918 {
4919 unsigned long mach = bfd_mach_sparc_v9;
4920
4921 if (hwcaps2->i & m8_hwcaps2_mask)
4922 mach = bfd_mach_sparc_v9m8;
4923 else if (hwcaps2->i & v9m_hwcaps2_mask)
4924 mach = bfd_mach_sparc_v9m;
4925 else if (hwcaps->i & v9v_hwcaps_mask)
4926 mach = bfd_mach_sparc_v9v;
4927 else if (hwcaps->i & v9e_hwcaps_mask)
4928 mach = bfd_mach_sparc_v9e;
4929 else if (hwcaps->i & v9d_hwcaps_mask)
4930 mach = bfd_mach_sparc_v9d;
4931 else if (hwcaps->i & v9c_hwcaps_mask)
4932 mach = bfd_mach_sparc_v9c;
4933 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4934 mach = bfd_mach_sparc_v9b;
4935 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4936 mach = bfd_mach_sparc_v9a;
4937 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4938 }
4939 else
4940 {
4941 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4942 {
4943 if (hwcaps2->i & m8_hwcaps2_mask)
4944 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4945 bfd_mach_sparc_v8plusm8);
4946 else if (hwcaps2->i & v9m_hwcaps2_mask)
4947 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4948 bfd_mach_sparc_v8plusm);
4949 else if (hwcaps->i & v9v_hwcaps_mask)
4950 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4951 bfd_mach_sparc_v8plusv);
4952 else if (hwcaps->i & v9e_hwcaps_mask)
4953 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4954 bfd_mach_sparc_v8pluse);
4955 else if (hwcaps->i & v9d_hwcaps_mask)
4956 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4957 bfd_mach_sparc_v8plusd);
4958 else if (hwcaps->i & v9c_hwcaps_mask)
4959 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4960 bfd_mach_sparc_v8plusc);
4961 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4962 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4963 bfd_mach_sparc_v8plusb);
4964 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4965 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4966 bfd_mach_sparc_v8plusa);
4967 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4968 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4969 bfd_mach_sparc_v8plus);
4970 else
4971 return FALSE;
4972 }
4973 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4974 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4975 bfd_mach_sparc_sparclite_le);
4976 else
4977 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4978 }
4979 }
4980
4981 /* Return address for Ith PLT stub in section PLT, for relocation REL
4982 or (bfd_vma) -1 if it should not be included. */
4983
4984 bfd_vma
4985 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4986 {
4987 if (ABI_64_P (plt->owner))
4988 {
4989 bfd_vma j;
4990
4991 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4992 if (i < PLT64_LARGE_THRESHOLD)
4993 return plt->vma + i * PLT64_ENTRY_SIZE;
4994
4995 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4996 i -= j;
4997 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4998 }
4999 else
5000 return rel->address;
5001 }
5002
5003 /* Merge backend specific data from an object file to the output
5004 object file when linking. */
5005
5006 bfd_boolean
5007 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
5008 {
5009 bfd *obfd = info->output_bfd;
5010 obj_attribute *in_attr, *in_attrs;
5011 obj_attribute *out_attr, *out_attrs;
5012
5013 if (!elf_known_obj_attributes_proc (obfd)[0].i)
5014 {
5015 /* This is the first object. Copy the attributes. */
5016 _bfd_elf_copy_obj_attributes (ibfd, obfd);
5017
5018 /* Use the Tag_null value to indicate the attributes have been
5019 initialized. */
5020 elf_known_obj_attributes_proc (obfd)[0].i = 1;
5021
5022 return TRUE;
5023 }
5024
5025 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
5026 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
5027
5028 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
5029 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
5030
5031 out_attr->i |= in_attr->i;
5032 out_attr->type = 1;
5033
5034 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
5035 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
5036
5037 out_attr->i |= in_attr->i;
5038 out_attr->type = 1;
5039
5040 /* Merge Tag_compatibility attributes and any common GNU ones. */
5041 _bfd_elf_merge_object_attributes (ibfd, info);
5042
5043 return TRUE;
5044 }