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