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Fix Sparc, s390 and AArch64 targets so that they can handle relocs against ifunc...
[thirdparty/binutils-gdb.git] / bfd / elfxx-sparc.c
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: unsupported relocation type %#x"), abfd, (int) code);
590 bfd_set_error (bfd_error_bad_value);
591 return NULL;
592 }
593
594 reloc_howto_type *
595 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
596 const char *r_name)
597 {
598 unsigned int i;
599
600 for (i = 0; i < ARRAY_SIZE (_bfd_sparc_elf_howto_table); i++)
601 if (_bfd_sparc_elf_howto_table[i].name != NULL
602 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
603 return &_bfd_sparc_elf_howto_table[i];
604
605 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
606 return &sparc_vtinherit_howto;
607 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
608 return &sparc_vtentry_howto;
609 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
610 return &sparc_rev32_howto;
611
612 return NULL;
613 }
614
615 reloc_howto_type *
616 _bfd_sparc_elf_info_to_howto_ptr (bfd *abfd ATTRIBUTE_UNUSED,
617 unsigned int r_type)
618 {
619 switch (r_type)
620 {
621 case R_SPARC_JMP_IREL:
622 return &sparc_jmp_irel_howto;
623
624 case R_SPARC_IRELATIVE:
625 return &sparc_irelative_howto;
626
627 case R_SPARC_GNU_VTINHERIT:
628 return &sparc_vtinherit_howto;
629
630 case R_SPARC_GNU_VTENTRY:
631 return &sparc_vtentry_howto;
632
633 case R_SPARC_REV32:
634 return &sparc_rev32_howto;
635
636 default:
637 if (r_type >= (unsigned int) R_SPARC_max_std)
638 {
639 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
640 abfd, r_type);
641 bfd_set_error (bfd_error_bad_value);
642 return NULL;
643 }
644 return &_bfd_sparc_elf_howto_table[r_type];
645 }
646 }
647
648 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
649 so just take advantage of that. */
650 #define SPARC_ELF_R_TYPE(r_info) \
651 ((r_info) & 0xff)
652
653 bfd_boolean
654 _bfd_sparc_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
655 Elf_Internal_Rela *dst)
656 {
657 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
658
659 if ((cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (abfd, r_type)) == NULL)
660 {
661 _bfd_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 {
3005 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
3006 STT_GNU_IFUNC symbol as STT_FUNC. */
3007 if (elf_section_type (input_section) == SHT_NOTE)
3008 goto skip_ifunc;
3009 abort ();
3010 }
3011
3012 plt_sec = htab->elf.splt;
3013 if (! plt_sec)
3014 plt_sec =htab->elf.iplt;
3015
3016 switch (r_type)
3017 {
3018 case R_SPARC_GOTDATA_OP:
3019 continue;
3020
3021 case R_SPARC_GOTDATA_OP_HIX22:
3022 case R_SPARC_GOTDATA_OP_LOX10:
3023 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3024 ? R_SPARC_GOT22
3025 : R_SPARC_GOT10);
3026 howto = _bfd_sparc_elf_howto_table + r_type;
3027 /* Fall through. */
3028
3029 case R_SPARC_GOT10:
3030 case R_SPARC_GOT13:
3031 case R_SPARC_GOT22:
3032 if (htab->elf.sgot == NULL)
3033 abort ();
3034 off = h->got.offset;
3035 if (off == (bfd_vma) -1)
3036 abort();
3037 relocation = htab->elf.sgot->output_offset + off - got_base;
3038 goto do_relocation;
3039
3040 case R_SPARC_WPLT30:
3041 case R_SPARC_WDISP30:
3042 relocation = (plt_sec->output_section->vma
3043 + plt_sec->output_offset + h->plt.offset);
3044 goto do_relocation;
3045
3046 case R_SPARC_32:
3047 case R_SPARC_64:
3048 if (bfd_link_pic (info) && h->non_got_ref)
3049 {
3050 Elf_Internal_Rela outrel;
3051 bfd_vma offset;
3052
3053 offset = _bfd_elf_section_offset (output_bfd, info,
3054 input_section,
3055 rel->r_offset);
3056 if (offset == (bfd_vma) -1
3057 || offset == (bfd_vma) -2)
3058 abort();
3059
3060 outrel.r_offset = (input_section->output_section->vma
3061 + input_section->output_offset
3062 + offset);
3063
3064 if (h->dynindx == -1
3065 || h->forced_local
3066 || bfd_link_executable (info))
3067 {
3068 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3069 0, R_SPARC_IRELATIVE);
3070 outrel.r_addend = relocation + rel->r_addend;
3071 }
3072 else
3073 {
3074 if (h->dynindx == -1)
3075 abort();
3076 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3077 outrel.r_addend = rel->r_addend;
3078 }
3079
3080 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3081 continue;
3082 }
3083
3084 relocation = (plt_sec->output_section->vma
3085 + plt_sec->output_offset + h->plt.offset);
3086 goto do_relocation;
3087
3088 case R_SPARC_HI22:
3089 case R_SPARC_LO10:
3090 /* We should only see such relocs in static links. */
3091 if (bfd_link_pic (info))
3092 abort();
3093 relocation = (plt_sec->output_section->vma
3094 + plt_sec->output_offset + h->plt.offset);
3095 goto do_relocation;
3096
3097 default:
3098 if (h->root.root.string)
3099 name = h->root.root.string;
3100 else
3101 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3102 NULL);
3103 _bfd_error_handler
3104 /* xgettext:c-format */
3105 (_("%pB: relocation %s against STT_GNU_IFUNC "
3106 "symbol `%s' isn't handled by %s"), input_bfd,
3107 _bfd_sparc_elf_howto_table[r_type].name,
3108 name, __FUNCTION__);
3109 bfd_set_error (bfd_error_bad_value);
3110 return FALSE;
3111 }
3112 }
3113
3114 skip_ifunc:
3115 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
3116 resolved_to_zero = eh && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
3117
3118 switch (r_type)
3119 {
3120 case R_SPARC_GOTDATA_OP_HIX22:
3121 case R_SPARC_GOTDATA_OP_LOX10:
3122 if (gdop_relative_offset_ok (info, h, relocation))
3123 {
3124 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3125 ? R_SPARC_GOTDATA_HIX22
3126 : R_SPARC_GOTDATA_LOX10);
3127 howto = _bfd_sparc_elf_howto_table + r_type;
3128 }
3129 break;
3130
3131 case R_SPARC_GOTDATA_OP:
3132 if (gdop_relative_offset_ok (info, h, relocation))
3133 {
3134 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3135
3136 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3137 relocation = 0x80000000 | (insn & 0x3e07c01f);
3138 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3139
3140 /* If the symbol is global but not dynamic, an .rela.* slot has
3141 been allocated for it in the GOT so output R_SPARC_NONE here.
3142 See also the handling of other GOT relocations just below. */
3143 if (h != NULL
3144 && h->dynindx == -1
3145 && !h->forced_local
3146 && h->root.type != bfd_link_hash_undefweak
3147 && (h->got.offset & 1) == 0
3148 && bfd_link_pic (info))
3149 {
3150 asection *s = htab->elf.srelgot;
3151 Elf_Internal_Rela outrel;
3152
3153 BFD_ASSERT (s != NULL);
3154
3155 memset (&outrel, 0, sizeof outrel);
3156 sparc_elf_append_rela (output_bfd, s, &outrel);
3157 h->got.offset |= 1;
3158 }
3159 }
3160 continue;
3161 }
3162
3163 switch (r_type)
3164 {
3165 case R_SPARC_GOTDATA_HIX22:
3166 case R_SPARC_GOTDATA_LOX10:
3167 relocation = gdopoff (info, relocation);
3168 break;
3169
3170 case R_SPARC_GOTDATA_OP_HIX22:
3171 case R_SPARC_GOTDATA_OP_LOX10:
3172 case R_SPARC_GOT10:
3173 case R_SPARC_GOT13:
3174 case R_SPARC_GOT22:
3175 /* Relocation is to the entry for this symbol in the global
3176 offset table. */
3177 if (htab->elf.sgot == NULL)
3178 abort ();
3179
3180 relative_reloc = FALSE;
3181 if (h != NULL)
3182 {
3183 bfd_boolean dyn;
3184
3185 off = h->got.offset;
3186 BFD_ASSERT (off != (bfd_vma) -1);
3187 dyn = elf_hash_table (info)->dynamic_sections_created;
3188
3189 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3190 bfd_link_pic (info),
3191 h)
3192 || (bfd_link_pic (info)
3193 && SYMBOL_REFERENCES_LOCAL (info, h)))
3194 {
3195 /* This is actually a static link, or it is a
3196 -Bsymbolic link and the symbol is defined
3197 locally, or the symbol was forced to be local
3198 because of a version file. We must initialize
3199 this entry in the global offset table. Since the
3200 offset must always be a multiple of 8 for 64-bit
3201 and 4 for 32-bit, we use the least significant bit
3202 to record whether we have initialized it already.
3203
3204 When doing a dynamic link, we create a .rela.got
3205 relocation entry to initialize the value. This
3206 is done in the finish_dynamic_symbol routine. */
3207 if ((off & 1) != 0)
3208 off &= ~1;
3209 else
3210 {
3211 /* If this symbol isn't dynamic in PIC mode, treat it
3212 like a local symbol in PIC mode below. */
3213 if (h->dynindx == -1
3214 && !h->forced_local
3215 && h->root.type != bfd_link_hash_undefweak
3216 && bfd_link_pic (info))
3217 relative_reloc = TRUE;
3218 else
3219 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3220 htab->elf.sgot->contents + off);
3221 h->got.offset |= 1;
3222 }
3223 }
3224 else
3225 unresolved_reloc = FALSE;
3226 }
3227 else
3228 {
3229 BFD_ASSERT (local_got_offsets != NULL
3230 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3231
3232 off = local_got_offsets[r_symndx];
3233
3234 /* The offset must always be a multiple of 8 on 64-bit and
3235 4 on 32-bit. We use the least significant bit to record
3236 whether we have already processed this entry. */
3237 if ((off & 1) != 0)
3238 off &= ~1;
3239 else
3240 {
3241 /* For a local symbol in PIC mode, we need to generate a
3242 R_SPARC_RELATIVE reloc for the dynamic linker. */
3243 if (bfd_link_pic (info))
3244 relative_reloc = TRUE;
3245 else
3246 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3247 htab->elf.sgot->contents + off);
3248 local_got_offsets[r_symndx] |= 1;
3249 }
3250 }
3251
3252 if (relative_reloc)
3253 {
3254 asection *s = htab->elf.srelgot;
3255 Elf_Internal_Rela outrel;
3256
3257 BFD_ASSERT (s != NULL);
3258
3259 outrel.r_offset = (htab->elf.sgot->output_section->vma
3260 + htab->elf.sgot->output_offset
3261 + off);
3262 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3263 0, R_SPARC_RELATIVE);
3264 outrel.r_addend = relocation;
3265 sparc_elf_append_rela (output_bfd, s, &outrel);
3266 /* Versions of glibc ld.so at least up to 2.26 wrongly
3267 add the section contents to the value calculated for
3268 a RELATIVE reloc. Zero the contents to work around
3269 this bug. */
3270 relocation = 0;
3271 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3272 htab->elf.sgot->contents + off);
3273 }
3274
3275 relocation = htab->elf.sgot->output_offset + off - got_base;
3276 break;
3277
3278 case R_SPARC_PLT32:
3279 case R_SPARC_PLT64:
3280 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3281 {
3282 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3283 goto r_sparc_plt32;
3284 }
3285 /* Fall through. */
3286
3287 case R_SPARC_WPLT30:
3288 case R_SPARC_HIPLT22:
3289 case R_SPARC_LOPLT10:
3290 case R_SPARC_PCPLT32:
3291 case R_SPARC_PCPLT22:
3292 case R_SPARC_PCPLT10:
3293 r_sparc_wplt30:
3294 /* Relocation is to the entry for this symbol in the
3295 procedure linkage table. */
3296
3297 if (! ABI_64_P (output_bfd))
3298 {
3299 /* The Solaris native assembler will generate a WPLT30 reloc
3300 for a local symbol if you assemble a call from one
3301 section to another when using -K pic. We treat it as
3302 WDISP30. */
3303 if (h == NULL)
3304 break;
3305 }
3306 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3307 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3308 break;
3309 else
3310 {
3311 BFD_ASSERT (h != NULL);
3312 }
3313
3314 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3315 {
3316 /* We didn't make a PLT entry for this symbol. This
3317 happens when statically linking PIC code, or when
3318 using -Bsymbolic. */
3319 break;
3320 }
3321
3322 relocation = (htab->elf.splt->output_section->vma
3323 + htab->elf.splt->output_offset
3324 + h->plt.offset);
3325 unresolved_reloc = FALSE;
3326 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3327 {
3328 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3329 is_plt = TRUE;
3330 goto r_sparc_plt32;
3331 }
3332 break;
3333
3334 case R_SPARC_PC10:
3335 case R_SPARC_PC22:
3336 case R_SPARC_PC_HH22:
3337 case R_SPARC_PC_HM10:
3338 case R_SPARC_PC_LM22:
3339 if (h != NULL
3340 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3341 break;
3342 /* Fall through. */
3343 case R_SPARC_DISP8:
3344 case R_SPARC_DISP16:
3345 case R_SPARC_DISP32:
3346 case R_SPARC_DISP64:
3347 case R_SPARC_WDISP30:
3348 case R_SPARC_WDISP22:
3349 case R_SPARC_WDISP19:
3350 case R_SPARC_WDISP16:
3351 case R_SPARC_WDISP10:
3352 case R_SPARC_8:
3353 case R_SPARC_16:
3354 case R_SPARC_32:
3355 case R_SPARC_HI22:
3356 case R_SPARC_22:
3357 case R_SPARC_13:
3358 case R_SPARC_LO10:
3359 case R_SPARC_UA16:
3360 case R_SPARC_UA32:
3361 case R_SPARC_10:
3362 case R_SPARC_11:
3363 case R_SPARC_64:
3364 case R_SPARC_OLO10:
3365 case R_SPARC_HH22:
3366 case R_SPARC_HM10:
3367 case R_SPARC_LM22:
3368 case R_SPARC_7:
3369 case R_SPARC_5:
3370 case R_SPARC_6:
3371 case R_SPARC_HIX22:
3372 case R_SPARC_LOX10:
3373 case R_SPARC_H44:
3374 case R_SPARC_M44:
3375 case R_SPARC_L44:
3376 case R_SPARC_H34:
3377 case R_SPARC_UA64:
3378 r_sparc_plt32:
3379 if ((input_section->flags & SEC_ALLOC) == 0 || is_vxworks_tls)
3380 break;
3381
3382 /* Copy dynamic function pointer relocations. Don't generate
3383 dynamic relocations against resolved undefined weak symbols
3384 in PIE. */
3385 if ((bfd_link_pic (info)
3386 && (h == NULL
3387 || !(h->root.type == bfd_link_hash_undefweak
3388 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3389 || resolved_to_zero)))
3390 && (! howto->pc_relative
3391 || !SYMBOL_CALLS_LOCAL (info, h)))
3392 || (!bfd_link_pic (info)
3393 && h != NULL
3394 && h->dynindx != -1
3395 && !h->non_got_ref
3396 && ((h->def_dynamic
3397 && !h->def_regular)
3398 || (h->root.type == bfd_link_hash_undefweak
3399 && !resolved_to_zero)
3400 || h->root.type == bfd_link_hash_undefined)))
3401 {
3402 Elf_Internal_Rela outrel;
3403 bfd_boolean skip, relocate = FALSE;
3404
3405 /* When generating a shared object, these relocations
3406 are copied into the output file to be resolved at run
3407 time. */
3408
3409 BFD_ASSERT (sreloc != NULL);
3410
3411 skip = FALSE;
3412
3413 outrel.r_offset =
3414 _bfd_elf_section_offset (output_bfd, info, input_section,
3415 rel->r_offset);
3416 if (outrel.r_offset == (bfd_vma) -1)
3417 skip = TRUE;
3418 else if (outrel.r_offset == (bfd_vma) -2)
3419 skip = TRUE, relocate = TRUE;
3420 outrel.r_offset += (input_section->output_section->vma
3421 + input_section->output_offset);
3422
3423 /* Optimize unaligned reloc usage now that we know where
3424 it finally resides. */
3425 switch (r_type)
3426 {
3427 case R_SPARC_16:
3428 if (outrel.r_offset & 1)
3429 r_type = R_SPARC_UA16;
3430 break;
3431 case R_SPARC_UA16:
3432 if (!(outrel.r_offset & 1))
3433 r_type = R_SPARC_16;
3434 break;
3435 case R_SPARC_32:
3436 if (outrel.r_offset & 3)
3437 r_type = R_SPARC_UA32;
3438 break;
3439 case R_SPARC_UA32:
3440 if (!(outrel.r_offset & 3))
3441 r_type = R_SPARC_32;
3442 break;
3443 case R_SPARC_64:
3444 if (outrel.r_offset & 7)
3445 r_type = R_SPARC_UA64;
3446 break;
3447 case R_SPARC_UA64:
3448 if (!(outrel.r_offset & 7))
3449 r_type = R_SPARC_64;
3450 break;
3451 case R_SPARC_DISP8:
3452 case R_SPARC_DISP16:
3453 case R_SPARC_DISP32:
3454 case R_SPARC_DISP64:
3455 /* If the symbol is not dynamic, we should not keep
3456 a dynamic relocation. But an .rela.* slot has been
3457 allocated for it, output R_SPARC_NONE.
3458 FIXME: Add code tracking needed dynamic relocs as
3459 e.g. i386 has. */
3460 if (h->dynindx == -1)
3461 skip = TRUE, relocate = TRUE;
3462 break;
3463 }
3464
3465 if (skip)
3466 memset (&outrel, 0, sizeof outrel);
3467 /* h->dynindx may be -1 if the symbol was marked to
3468 become local. */
3469 else if (h != NULL
3470 && h->dynindx != -1
3471 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3472 || !bfd_link_pic (info)
3473 || !SYMBOLIC_BIND (info, h)
3474 || !h->def_regular))
3475 {
3476 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3477 outrel.r_addend = rel->r_addend;
3478 }
3479 else
3480 {
3481 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3482 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3483 {
3484 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3485 0, R_SPARC_RELATIVE);
3486 outrel.r_addend = relocation + rel->r_addend;
3487 }
3488 else
3489 {
3490 long indx;
3491
3492 outrel.r_addend = relocation + rel->r_addend;
3493
3494 if (is_plt)
3495 sec = htab->elf.splt;
3496
3497 if (bfd_is_abs_section (sec))
3498 indx = 0;
3499 else if (sec == NULL || sec->owner == NULL)
3500 {
3501 bfd_set_error (bfd_error_bad_value);
3502 return FALSE;
3503 }
3504 else
3505 {
3506 asection *osec;
3507
3508 /* We are turning this relocation into one
3509 against a section symbol. It would be
3510 proper to subtract the symbol's value,
3511 osec->vma, from the emitted reloc addend,
3512 but ld.so expects buggy relocs. */
3513 osec = sec->output_section;
3514 indx = elf_section_data (osec)->dynindx;
3515
3516 if (indx == 0)
3517 {
3518 osec = htab->elf.text_index_section;
3519 indx = elf_section_data (osec)->dynindx;
3520 }
3521
3522 /* FIXME: we really should be able to link non-pic
3523 shared libraries. */
3524 if (indx == 0)
3525 {
3526 BFD_FAIL ();
3527 _bfd_error_handler
3528 (_("%pB: probably compiled without -fPIC?"),
3529 input_bfd);
3530 bfd_set_error (bfd_error_bad_value);
3531 return FALSE;
3532 }
3533 }
3534
3535 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3536 r_type);
3537 }
3538 }
3539
3540 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3541
3542 /* This reloc will be computed at runtime, so there's no
3543 need to do anything now. */
3544 if (! relocate)
3545 continue;
3546 }
3547 break;
3548
3549 case R_SPARC_TLS_GD_HI22:
3550 case R_SPARC_TLS_GD_LO10:
3551 case R_SPARC_TLS_IE_HI22:
3552 case R_SPARC_TLS_IE_LO10:
3553 r_type = sparc_elf_tls_transition (info, input_bfd, r_type,
3554 h == NULL || h->dynindx == -1);
3555 if (r_type == R_SPARC_REV32)
3556 break;
3557 if (h != NULL)
3558 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3559 else if (local_got_offsets)
3560 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3561 else
3562 tls_type = GOT_UNKNOWN;
3563 if (tls_type == GOT_TLS_IE)
3564 switch (r_type)
3565 {
3566 case R_SPARC_TLS_GD_HI22:
3567 r_type = R_SPARC_TLS_IE_HI22;
3568 break;
3569 case R_SPARC_TLS_GD_LO10:
3570 r_type = R_SPARC_TLS_IE_LO10;
3571 break;
3572 }
3573
3574 if (r_type == R_SPARC_TLS_LE_HIX22)
3575 {
3576 relocation = tpoff (info, relocation);
3577 break;
3578 }
3579 if (r_type == R_SPARC_TLS_LE_LOX10)
3580 {
3581 /* Change add into xor. */
3582 relocation = tpoff (info, relocation);
3583 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3584 contents + rel->r_offset)
3585 | 0x80182000), contents + rel->r_offset);
3586 break;
3587 }
3588
3589 if (h != NULL)
3590 {
3591 off = h->got.offset;
3592 h->got.offset |= 1;
3593 }
3594 else
3595 {
3596 BFD_ASSERT (local_got_offsets != NULL);
3597 off = local_got_offsets[r_symndx];
3598 local_got_offsets[r_symndx] |= 1;
3599 }
3600
3601 r_sparc_tlsldm:
3602 if (htab->elf.sgot == NULL)
3603 abort ();
3604
3605 if ((off & 1) != 0)
3606 off &= ~1;
3607 else
3608 {
3609 Elf_Internal_Rela outrel;
3610 int dr_type, indx;
3611
3612 if (htab->elf.srelgot == NULL)
3613 abort ();
3614
3615 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3616 htab->elf.sgot->contents + off);
3617 outrel.r_offset = (htab->elf.sgot->output_section->vma
3618 + htab->elf.sgot->output_offset + off);
3619 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3620 if (r_type == R_SPARC_TLS_IE_HI22
3621 || r_type == R_SPARC_TLS_IE_LO10)
3622 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3623 else
3624 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3625 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3626 outrel.r_addend = relocation - dtpoff_base (info);
3627 else
3628 outrel.r_addend = 0;
3629 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3630 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3631
3632 if (r_type == R_SPARC_TLS_GD_HI22
3633 || r_type == R_SPARC_TLS_GD_LO10)
3634 {
3635 if (indx == 0)
3636 {
3637 BFD_ASSERT (! unresolved_reloc);
3638 SPARC_ELF_PUT_WORD (htab, output_bfd,
3639 relocation - dtpoff_base (info),
3640 (htab->elf.sgot->contents + off
3641 + SPARC_ELF_WORD_BYTES (htab)));
3642 }
3643 else
3644 {
3645 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3646 (htab->elf.sgot->contents + off
3647 + SPARC_ELF_WORD_BYTES (htab)));
3648 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3649 SPARC_ELF_DTPOFF_RELOC (htab));
3650 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3651 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3652 &outrel);
3653 }
3654 }
3655 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3656 {
3657 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3658 (htab->elf.sgot->contents + off
3659 + SPARC_ELF_WORD_BYTES (htab)));
3660 }
3661 }
3662
3663 if (off >= (bfd_vma) -2)
3664 abort ();
3665
3666 relocation = htab->elf.sgot->output_offset + off - got_base;
3667 unresolved_reloc = FALSE;
3668 howto = _bfd_sparc_elf_howto_table + r_type;
3669 break;
3670
3671 case R_SPARC_TLS_LDM_HI22:
3672 case R_SPARC_TLS_LDM_LO10:
3673 /* LD -> LE */
3674 if (bfd_link_executable (info))
3675 {
3676 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3677 continue;
3678 }
3679 off = htab->tls_ldm_got.offset;
3680 htab->tls_ldm_got.offset |= 1;
3681 goto r_sparc_tlsldm;
3682
3683 case R_SPARC_TLS_LDO_HIX22:
3684 case R_SPARC_TLS_LDO_LOX10:
3685 /* LD -> LE */
3686 if (bfd_link_executable (info))
3687 {
3688 if (r_type == R_SPARC_TLS_LDO_HIX22)
3689 r_type = R_SPARC_TLS_LE_HIX22;
3690 else
3691 r_type = R_SPARC_TLS_LE_LOX10;
3692 }
3693 else
3694 {
3695 relocation -= dtpoff_base (info);
3696 break;
3697 }
3698 /* Fall through. */
3699
3700 case R_SPARC_TLS_LE_HIX22:
3701 case R_SPARC_TLS_LE_LOX10:
3702 if (!bfd_link_executable (info))
3703 {
3704 Elf_Internal_Rela outrel;
3705 bfd_vma offset
3706 = _bfd_elf_section_offset (output_bfd, info, input_section,
3707 rel->r_offset);
3708 if (offset == (bfd_vma) -1 || offset == (bfd_vma) -2)
3709 memset (&outrel, 0, sizeof outrel);
3710 else
3711 {
3712 outrel.r_offset = offset
3713 + input_section->output_section->vma
3714 + input_section->output_offset;
3715 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3716 outrel.r_addend
3717 = relocation - dtpoff_base (info) + rel->r_addend;
3718 }
3719
3720 BFD_ASSERT (sreloc != NULL);
3721 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3722 continue;
3723 }
3724 relocation = tpoff (info, relocation);
3725 break;
3726
3727 case R_SPARC_TLS_LDM_CALL:
3728 /* LD -> LE */
3729 if (bfd_link_executable (info))
3730 {
3731 /* mov %g0, %o0 */
3732 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3733 continue;
3734 }
3735 /* Fall through */
3736
3737 case R_SPARC_TLS_GD_CALL:
3738 if (h != NULL)
3739 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3740 else if (local_got_offsets)
3741 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3742 else
3743 tls_type = GOT_UNKNOWN;
3744 /* GD -> IE or LE */
3745 if (bfd_link_executable (info)
3746 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3747 {
3748 Elf_Internal_Rela *rel2;
3749 bfd_vma insn;
3750
3751 /* GD -> LE */
3752 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3753 {
3754 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3755 continue;
3756 }
3757
3758 /* GD -> IE */
3759 if (rel + 1 < relend
3760 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3761 && rel[1].r_offset == rel->r_offset + 4
3762 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3763 && (((insn = bfd_get_32 (input_bfd,
3764 contents + rel[1].r_offset))
3765 >> 25) & 0x1f) == 8)
3766 {
3767 /* We have
3768 call __tls_get_addr, %tgd_call(foo)
3769 add %reg1, %reg2, %o0, %tgd_add(foo)
3770 and change it into IE:
3771 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3772 add %g7, %o0, %o0, %tie_add(foo).
3773 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3774 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3775 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3776 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3777 contents + rel->r_offset);
3778 bfd_put_32 (output_bfd, 0x9001c008,
3779 contents + rel->r_offset + 4);
3780 rel++;
3781 continue;
3782 }
3783
3784 /* We cannot just overwrite the delay slot instruction,
3785 as it might be what puts the %o0 argument to
3786 __tls_get_addr into place. So we have to transpose
3787 the delay slot with the add we patch in. */
3788 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3789 bfd_put_32 (output_bfd, insn,
3790 contents + rel->r_offset);
3791 bfd_put_32 (output_bfd, 0x9001c008,
3792 contents + rel->r_offset + 4);
3793
3794 rel2 = rel;
3795 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3796 rel->r_offset + 4))
3797 != NULL)
3798 {
3799 /* If the instruction we moved has a relocation attached to
3800 it, adjust the offset so that it will apply to the correct
3801 instruction. */
3802 rel2->r_offset -= 4;
3803 }
3804 continue;
3805 }
3806
3807 h = (struct elf_link_hash_entry *)
3808 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3809 FALSE, TRUE);
3810 BFD_ASSERT (h != NULL);
3811 r_type = R_SPARC_WPLT30;
3812 howto = _bfd_sparc_elf_howto_table + r_type;
3813 goto r_sparc_wplt30;
3814
3815 case R_SPARC_TLS_GD_ADD:
3816 if (h != NULL)
3817 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3818 else if (local_got_offsets)
3819 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3820 else
3821 tls_type = GOT_UNKNOWN;
3822 /* GD -> IE or LE */
3823 if (bfd_link_executable (info) || tls_type == GOT_TLS_IE)
3824 {
3825 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3826 changed into IE:
3827 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3828 or LE:
3829 add %g7, %reg2, %reg3. */
3830 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3831 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3832 relocation = (insn & ~0x7c000) | 0x1c000;
3833 else
3834 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3835 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3836 }
3837 continue;
3838
3839 case R_SPARC_TLS_LDM_ADD:
3840 /* LD -> LE */
3841 if (bfd_link_executable (info))
3842 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3843 continue;
3844
3845 case R_SPARC_TLS_LDO_ADD:
3846 /* LD -> LE */
3847 if (bfd_link_executable (info))
3848 {
3849 /* Change rs1 into %g7. */
3850 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3851 insn = (insn & ~0x7c000) | 0x1c000;
3852 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3853 }
3854 continue;
3855
3856 case R_SPARC_TLS_IE_LD:
3857 case R_SPARC_TLS_IE_LDX:
3858 /* IE -> LE */
3859 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3860 {
3861 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3862 int rs2 = insn & 0x1f;
3863 int rd = (insn >> 25) & 0x1f;
3864
3865 if (rs2 == rd)
3866 relocation = SPARC_NOP;
3867 else
3868 relocation = 0x80100000 | (insn & 0x3e00001f);
3869 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3870 }
3871 continue;
3872
3873 case R_SPARC_TLS_IE_ADD:
3874 /* Totally useless relocation. */
3875 continue;
3876
3877 case R_SPARC_TLS_DTPOFF32:
3878 case R_SPARC_TLS_DTPOFF64:
3879 relocation -= dtpoff_base (info);
3880 break;
3881
3882 default:
3883 break;
3884 }
3885
3886 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3887 because such sections are not SEC_ALLOC and thus ld.so will
3888 not process them. */
3889 if (unresolved_reloc
3890 && !((input_section->flags & SEC_DEBUGGING) != 0
3891 && h->def_dynamic)
3892 && _bfd_elf_section_offset (output_bfd, info, input_section,
3893 rel->r_offset) != (bfd_vma) -1)
3894 _bfd_error_handler
3895 /* xgettext:c-format */
3896 (_("%pB(%pA+%#" PRIx64 "): "
3897 "unresolvable %s relocation against symbol `%s'"),
3898 input_bfd,
3899 input_section,
3900 (uint64_t) rel->r_offset,
3901 howto->name,
3902 h->root.root.string);
3903
3904 r = bfd_reloc_continue;
3905 if (r_type == R_SPARC_OLO10)
3906 {
3907 bfd_vma x;
3908
3909 if (! ABI_64_P (output_bfd))
3910 abort ();
3911
3912 relocation += rel->r_addend;
3913 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3914
3915 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3916 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3917 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3918
3919 r = bfd_check_overflow (howto->complain_on_overflow,
3920 howto->bitsize, howto->rightshift,
3921 bfd_arch_bits_per_address (input_bfd),
3922 relocation);
3923 }
3924 else if (r_type == R_SPARC_WDISP16)
3925 {
3926 bfd_vma x;
3927
3928 relocation += rel->r_addend;
3929 relocation -= (input_section->output_section->vma
3930 + input_section->output_offset);
3931 relocation -= rel->r_offset;
3932
3933 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3934 x |= ((((relocation >> 2) & 0xc000) << 6)
3935 | ((relocation >> 2) & 0x3fff));
3936 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3937
3938 r = bfd_check_overflow (howto->complain_on_overflow,
3939 howto->bitsize, howto->rightshift,
3940 bfd_arch_bits_per_address (input_bfd),
3941 relocation);
3942 }
3943 else if (r_type == R_SPARC_WDISP10)
3944 {
3945 bfd_vma x;
3946
3947 relocation += rel->r_addend;
3948 relocation -= (input_section->output_section->vma
3949 + input_section->output_offset);
3950 relocation -= rel->r_offset;
3951
3952 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3953 x |= ((((relocation >> 2) & 0x300) << 11)
3954 | (((relocation >> 2) & 0xff) << 5));
3955 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3956
3957 r = bfd_check_overflow (howto->complain_on_overflow,
3958 howto->bitsize, howto->rightshift,
3959 bfd_arch_bits_per_address (input_bfd),
3960 relocation);
3961 }
3962 else if (r_type == R_SPARC_REV32)
3963 {
3964 bfd_vma x;
3965
3966 relocation = relocation + rel->r_addend;
3967
3968 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3969 x = x + relocation;
3970 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3971 r = bfd_reloc_ok;
3972 }
3973 else if (r_type == R_SPARC_TLS_LDO_HIX22
3974 || r_type == R_SPARC_TLS_LE_HIX22)
3975 {
3976 bfd_vma x;
3977
3978 relocation += rel->r_addend;
3979 if (r_type == R_SPARC_TLS_LE_HIX22)
3980 relocation ^= MINUS_ONE;
3981
3982 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3983 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3984 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3985 r = bfd_reloc_ok;
3986 }
3987 else if (r_type == R_SPARC_TLS_LDO_LOX10
3988 || r_type == R_SPARC_TLS_LE_LOX10)
3989 {
3990 bfd_vma x;
3991
3992 relocation += rel->r_addend;
3993 relocation &= 0x3ff;
3994 if (r_type == R_SPARC_TLS_LE_LOX10)
3995 relocation |= 0x1c00;
3996
3997 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3998 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3999 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4000
4001 r = bfd_reloc_ok;
4002 }
4003 else if (r_type == R_SPARC_HIX22
4004 || r_type == R_SPARC_GOTDATA_HIX22
4005 || r_type == R_SPARC_GOTDATA_OP_HIX22)
4006 {
4007 bfd_vma x;
4008
4009 relocation += rel->r_addend;
4010 if (r_type == R_SPARC_HIX22
4011 || (bfd_signed_vma) relocation < 0)
4012 relocation = relocation ^ MINUS_ONE;
4013
4014 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4015 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4016 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4017
4018 r = bfd_check_overflow (howto->complain_on_overflow,
4019 howto->bitsize, howto->rightshift,
4020 bfd_arch_bits_per_address (input_bfd),
4021 relocation);
4022 }
4023 else if (r_type == R_SPARC_LOX10
4024 || r_type == R_SPARC_GOTDATA_LOX10
4025 || r_type == R_SPARC_GOTDATA_OP_LOX10)
4026 {
4027 bfd_vma x;
4028
4029 relocation += rel->r_addend;
4030 if (r_type == R_SPARC_LOX10
4031 || (bfd_signed_vma) relocation < 0)
4032 relocation = (relocation & 0x3ff) | 0x1c00;
4033 else
4034 relocation = (relocation & 0x3ff);
4035
4036 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4037 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4038 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4039
4040 r = bfd_reloc_ok;
4041 }
4042 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4043 && sec_do_relax (input_section)
4044 && rel->r_offset + 4 < input_section->size)
4045 {
4046 #define G0 0
4047 #define O7 15
4048 #define XCC (2 << 20)
4049 #define COND(x) (((x)&0xf)<<25)
4050 #define CONDA COND(0x8)
4051 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4052 #define INSN_BA (F2(0,2) | CONDA)
4053 #define INSN_OR F3(2, 0x2, 0)
4054 #define INSN_NOP F2(0,4)
4055
4056 bfd_vma x, y;
4057
4058 /* If the instruction is a call with either:
4059 restore
4060 arithmetic instruction with rd == %o7
4061 where rs1 != %o7 and rs2 if it is register != %o7
4062 then we can optimize if the call destination is near
4063 by changing the call into a branch always. */
4064 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4065 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4066 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4067 {
4068 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4069 || ((y & OP3(0x28)) == 0 /* arithmetic */
4070 && (y & RD(~0)) == RD(O7)))
4071 && (y & RS1(~0)) != RS1(O7)
4072 && ((y & F3I(~0))
4073 || (y & RS2(~0)) != RS2(O7)))
4074 {
4075 bfd_vma reloc;
4076
4077 reloc = relocation + rel->r_addend - rel->r_offset;
4078 reloc -= (input_section->output_section->vma
4079 + input_section->output_offset);
4080
4081 /* Ensure the branch fits into simm22. */
4082 if ((reloc & 3) == 0
4083 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4084 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4085 {
4086 reloc >>= 2;
4087
4088 /* Check whether it fits into simm19. */
4089 if (((reloc & 0x3c0000) == 0
4090 || (reloc & 0x3c0000) == 0x3c0000)
4091 && (ABI_64_P (output_bfd)
4092 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4093 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4094 else
4095 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4096 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4097 r = bfd_reloc_ok;
4098 if (rel->r_offset >= 4
4099 && (y & (0xffffffff ^ RS1(~0)))
4100 == (INSN_OR | RD(O7) | RS2(G0)))
4101 {
4102 bfd_vma z;
4103 unsigned int reg;
4104
4105 z = bfd_get_32 (input_bfd,
4106 contents + rel->r_offset - 4);
4107 if ((z & (0xffffffff ^ RD(~0)))
4108 != (INSN_OR | RS1(O7) | RS2(G0)))
4109 continue;
4110
4111 /* The sequence was
4112 or %o7, %g0, %rN
4113 call foo
4114 or %rN, %g0, %o7
4115
4116 If call foo was replaced with ba, replace
4117 or %rN, %g0, %o7 with nop. */
4118
4119 reg = (y & RS1(~0)) >> 14;
4120 if (reg != ((z & RD(~0)) >> 25)
4121 || reg == G0 || reg == O7)
4122 continue;
4123
4124 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4125 contents + rel->r_offset + 4);
4126 }
4127
4128 }
4129 }
4130 }
4131 }
4132
4133 if (r == bfd_reloc_continue)
4134 {
4135 do_relocation:
4136 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4137 contents, rel->r_offset,
4138 relocation, rel->r_addend);
4139 }
4140 if (r != bfd_reloc_ok)
4141 {
4142 switch (r)
4143 {
4144 default:
4145 case bfd_reloc_outofrange:
4146 abort ();
4147 case bfd_reloc_overflow:
4148 {
4149 const char *name;
4150
4151 /* The Solaris native linker silently disregards overflows.
4152 We don't, but this breaks stabs debugging info, whose
4153 relocations are only 32-bits wide. Ignore overflows in
4154 this case and also for discarded entries. */
4155 if ((r_type == R_SPARC_32
4156 || r_type == R_SPARC_UA32
4157 || r_type == R_SPARC_DISP32)
4158 && (((input_section->flags & SEC_DEBUGGING) != 0
4159 && strcmp (bfd_section_name (input_bfd,
4160 input_section),
4161 ".stab") == 0)
4162 || _bfd_elf_section_offset (output_bfd, info,
4163 input_section,
4164 rel->r_offset)
4165 == (bfd_vma)-1))
4166 break;
4167
4168 if (h != NULL)
4169 {
4170 /* Assume this is a call protected by other code that
4171 detect the symbol is undefined. If this is the case,
4172 we can safely ignore the overflow. If not, the
4173 program is hosed anyway, and a little warning isn't
4174 going to help. */
4175 if (h->root.type == bfd_link_hash_undefweak
4176 && howto->pc_relative)
4177 break;
4178
4179 name = NULL;
4180 }
4181 else
4182 {
4183 name = bfd_elf_string_from_elf_section (input_bfd,
4184 symtab_hdr->sh_link,
4185 sym->st_name);
4186 if (name == NULL)
4187 return FALSE;
4188 if (*name == '\0')
4189 name = bfd_section_name (input_bfd, sec);
4190 }
4191 (*info->callbacks->reloc_overflow)
4192 (info, (h ? &h->root : NULL), name, howto->name,
4193 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4194 }
4195 break;
4196 }
4197 }
4198 }
4199
4200 return TRUE;
4201 }
4202
4203 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4204 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4205 is the offset of the associated .got.plt entry from
4206 _GLOBAL_OFFSET_TABLE_. */
4207
4208 static void
4209 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4210 bfd_vma plt_offset, bfd_vma plt_index,
4211 bfd_vma got_offset)
4212 {
4213 bfd_vma got_base;
4214 const bfd_vma *plt_entry;
4215 struct _bfd_sparc_elf_link_hash_table *htab;
4216 bfd_byte *loc;
4217 Elf_Internal_Rela rela;
4218
4219 htab = _bfd_sparc_elf_hash_table (info);
4220 BFD_ASSERT (htab != NULL);
4221
4222 if (bfd_link_pic (info))
4223 {
4224 plt_entry = sparc_vxworks_shared_plt_entry;
4225 got_base = 0;
4226 }
4227 else
4228 {
4229 plt_entry = sparc_vxworks_exec_plt_entry;
4230 got_base = (htab->elf.hgot->root.u.def.value
4231 + htab->elf.hgot->root.u.def.section->output_offset
4232 + htab->elf.hgot->root.u.def.section->output_section->vma);
4233 }
4234
4235 /* Fill in the entry in the procedure linkage table. */
4236 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4237 htab->elf.splt->contents + plt_offset);
4238 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4239 htab->elf.splt->contents + plt_offset + 4);
4240 bfd_put_32 (output_bfd, plt_entry[2],
4241 htab->elf.splt->contents + plt_offset + 8);
4242 bfd_put_32 (output_bfd, plt_entry[3],
4243 htab->elf.splt->contents + plt_offset + 12);
4244 bfd_put_32 (output_bfd, plt_entry[4],
4245 htab->elf.splt->contents + plt_offset + 16);
4246 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4247 htab->elf.splt->contents + plt_offset + 20);
4248 /* PC-relative displacement for a branch to the start of
4249 the PLT section. */
4250 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4251 & 0x003fffff),
4252 htab->elf.splt->contents + plt_offset + 24);
4253 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4254 htab->elf.splt->contents + plt_offset + 28);
4255
4256 /* Fill in the .got.plt entry, pointing initially at the
4257 second half of the PLT entry. */
4258 BFD_ASSERT (htab->elf.sgotplt != NULL);
4259 bfd_put_32 (output_bfd,
4260 htab->elf.splt->output_section->vma
4261 + htab->elf.splt->output_offset
4262 + plt_offset + 20,
4263 htab->elf.sgotplt->contents + got_offset);
4264
4265 /* Add relocations to .rela.plt.unloaded. */
4266 if (!bfd_link_pic (info))
4267 {
4268 loc = (htab->srelplt2->contents
4269 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4270
4271 /* Relocate the initial sethi. */
4272 rela.r_offset = (htab->elf.splt->output_section->vma
4273 + htab->elf.splt->output_offset
4274 + plt_offset);
4275 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4276 rela.r_addend = got_offset;
4277 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4278 loc += sizeof (Elf32_External_Rela);
4279
4280 /* Likewise the following or. */
4281 rela.r_offset += 4;
4282 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4283 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4284 loc += sizeof (Elf32_External_Rela);
4285
4286 /* Relocate the .got.plt entry. */
4287 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4288 + htab->elf.sgotplt->output_offset
4289 + got_offset);
4290 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4291 rela.r_addend = plt_offset + 20;
4292 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4293 }
4294 }
4295
4296 /* Finish up dynamic symbol handling. We set the contents of various
4297 dynamic sections here. */
4298
4299 bfd_boolean
4300 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4301 struct bfd_link_info *info,
4302 struct elf_link_hash_entry *h,
4303 Elf_Internal_Sym *sym)
4304 {
4305 struct _bfd_sparc_elf_link_hash_table *htab;
4306 const struct elf_backend_data *bed;
4307 struct _bfd_sparc_elf_link_hash_entry *eh;
4308 bfd_boolean resolved_to_zero;
4309
4310 htab = _bfd_sparc_elf_hash_table (info);
4311 BFD_ASSERT (htab != NULL);
4312 bed = get_elf_backend_data (output_bfd);
4313
4314 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
4315
4316 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
4317 resolved undefined weak symbols in executable so that their
4318 references have value 0 at run-time. */
4319 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
4320
4321 if (h->plt.offset != (bfd_vma) -1)
4322 {
4323 asection *splt;
4324 asection *srela;
4325 Elf_Internal_Rela rela;
4326 bfd_byte *loc;
4327 bfd_vma r_offset, got_offset;
4328 int rela_index;
4329
4330 /* When building a static executable, use .iplt and
4331 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4332 if (htab->elf.splt != NULL)
4333 {
4334 splt = htab->elf.splt;
4335 srela = htab->elf.srelplt;
4336 }
4337 else
4338 {
4339 splt = htab->elf.iplt;
4340 srela = htab->elf.irelplt;
4341 }
4342
4343 if (splt == NULL || srela == NULL)
4344 abort ();
4345
4346 /* Fill in the entry in the .rela.plt section. */
4347 if (htab->is_vxworks)
4348 {
4349 /* Work out the index of this PLT entry. */
4350 rela_index = ((h->plt.offset - htab->plt_header_size)
4351 / htab->plt_entry_size);
4352
4353 /* Calculate the offset of the associated .got.plt entry.
4354 The first three entries are reserved. */
4355 got_offset = (rela_index + 3) * 4;
4356
4357 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4358 rela_index, got_offset);
4359
4360
4361 /* On VxWorks, the relocation points to the .got.plt entry,
4362 not the .plt entry. */
4363 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4364 + htab->elf.sgotplt->output_offset
4365 + got_offset);
4366 rela.r_addend = 0;
4367 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4368 R_SPARC_JMP_SLOT);
4369 }
4370 else
4371 {
4372 bfd_boolean ifunc = FALSE;
4373
4374 /* Fill in the entry in the procedure linkage table. */
4375 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4376 h->plt.offset, splt->size,
4377 &r_offset);
4378
4379 if (h == NULL
4380 || h->dynindx == -1
4381 || ((bfd_link_executable (info)
4382 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4383 && h->def_regular
4384 && h->type == STT_GNU_IFUNC))
4385 {
4386 ifunc = TRUE;
4387 BFD_ASSERT (h == NULL
4388 || (h->type == STT_GNU_IFUNC
4389 && h->def_regular
4390 && (h->root.type == bfd_link_hash_defined
4391 || h->root.type == bfd_link_hash_defweak)));
4392 }
4393
4394 rela.r_offset = r_offset
4395 + (splt->output_section->vma + splt->output_offset);
4396 if (ABI_64_P (output_bfd)
4397 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4398 {
4399 if (ifunc)
4400 {
4401 rela.r_addend = (h->root.u.def.section->output_section->vma
4402 + h->root.u.def.section->output_offset
4403 + h->root.u.def.value);
4404 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4405 R_SPARC_IRELATIVE);
4406 }
4407 else
4408 {
4409 rela.r_addend = (-(h->plt.offset + 4)
4410 - splt->output_section->vma
4411 - splt->output_offset);
4412 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4413 R_SPARC_JMP_SLOT);
4414 }
4415 }
4416 else
4417 {
4418 if (ifunc)
4419 {
4420 rela.r_addend = (h->root.u.def.section->output_section->vma
4421 + h->root.u.def.section->output_offset
4422 + h->root.u.def.value);
4423 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4424 R_SPARC_JMP_IREL);
4425 }
4426 else
4427 {
4428 rela.r_addend = 0;
4429 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4430 R_SPARC_JMP_SLOT);
4431 }
4432 }
4433 }
4434
4435 /* Adjust for the first 4 reserved elements in the .plt section
4436 when setting the offset in the .rela.plt section.
4437 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4438 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4439
4440 loc = srela->contents;
4441 loc += rela_index * bed->s->sizeof_rela;
4442 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4443
4444 if (!resolved_to_zero && !h->def_regular)
4445 {
4446 /* Mark the symbol as undefined, rather than as defined in
4447 the .plt section. Leave the value alone. */
4448 sym->st_shndx = SHN_UNDEF;
4449 /* If the symbol is weak, we do need to clear the value.
4450 Otherwise, the PLT entry would provide a definition for
4451 the symbol even if the symbol wasn't defined anywhere,
4452 and so the symbol would never be NULL. */
4453 if (!h->ref_regular_nonweak)
4454 sym->st_value = 0;
4455 }
4456 }
4457
4458 /* Don't generate dynamic GOT relocation against resolved undefined weak
4459 symbols in an executable. */
4460 if (h->got.offset != (bfd_vma) -1
4461 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4462 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE
4463 && !(h->root.type == bfd_link_hash_undefweak
4464 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4465 || resolved_to_zero)))
4466 {
4467 asection *sgot;
4468 asection *srela;
4469 Elf_Internal_Rela rela;
4470
4471 /* This symbol has an entry in the GOT. Set it up. */
4472
4473 sgot = htab->elf.sgot;
4474 srela = htab->elf.srelgot;
4475 BFD_ASSERT (sgot != NULL && srela != NULL);
4476
4477 rela.r_offset = (sgot->output_section->vma
4478 + sgot->output_offset
4479 + (h->got.offset &~ (bfd_vma) 1));
4480
4481 /* If this is a -Bsymbolic link, and the symbol is defined
4482 locally, we just want to emit a RELATIVE reloc. Likewise if
4483 the symbol was forced to be local because of a version file.
4484 The entry in the global offset table will already have been
4485 initialized in the relocate_section function. */
4486 if (! bfd_link_pic (info)
4487 && h->type == STT_GNU_IFUNC
4488 && h->def_regular)
4489 {
4490 asection *plt;
4491
4492 /* We load the GOT entry with the PLT entry. */
4493 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4494 SPARC_ELF_PUT_WORD (htab, output_bfd,
4495 (plt->output_section->vma
4496 + plt->output_offset + h->plt.offset),
4497 htab->elf.sgot->contents
4498 + (h->got.offset & ~(bfd_vma) 1));
4499 return TRUE;
4500 }
4501
4502 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
4503 {
4504 asection *sec = h->root.u.def.section;
4505 if (h->type == STT_GNU_IFUNC)
4506 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4507 else
4508 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4509 rela.r_addend = (h->root.u.def.value
4510 + sec->output_section->vma
4511 + sec->output_offset);
4512 }
4513 else
4514 {
4515 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4516 rela.r_addend = 0;
4517 }
4518
4519 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4520 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4521 sparc_elf_append_rela (output_bfd, srela, &rela);
4522 }
4523
4524 if (h->needs_copy)
4525 {
4526 asection *s;
4527 Elf_Internal_Rela rela;
4528
4529 /* This symbols needs a copy reloc. Set it up. */
4530 BFD_ASSERT (h->dynindx != -1);
4531
4532 rela.r_offset = (h->root.u.def.value
4533 + h->root.u.def.section->output_section->vma
4534 + h->root.u.def.section->output_offset);
4535 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4536 rela.r_addend = 0;
4537 if (h->root.u.def.section == htab->elf.sdynrelro)
4538 s = htab->elf.sreldynrelro;
4539 else
4540 s = htab->elf.srelbss;
4541 sparc_elf_append_rela (output_bfd, s, &rela);
4542 }
4543
4544 /* Mark some specially defined symbols as absolute. On VxWorks,
4545 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4546 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4547 if (sym != NULL
4548 && (h == htab->elf.hdynamic
4549 || (!htab->is_vxworks
4550 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4551 sym->st_shndx = SHN_ABS;
4552
4553 return TRUE;
4554 }
4555
4556 /* Finish up the dynamic sections. */
4557
4558 static bfd_boolean
4559 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4560 bfd *dynobj, asection *sdyn,
4561 asection *splt ATTRIBUTE_UNUSED)
4562 {
4563 struct _bfd_sparc_elf_link_hash_table *htab;
4564 const struct elf_backend_data *bed;
4565 bfd_byte *dyncon, *dynconend;
4566 size_t dynsize;
4567 int stt_regidx = -1;
4568 bfd_boolean abi_64_p;
4569
4570 htab = _bfd_sparc_elf_hash_table (info);
4571 BFD_ASSERT (htab != NULL);
4572 bed = get_elf_backend_data (output_bfd);
4573 dynsize = bed->s->sizeof_dyn;
4574 dynconend = sdyn->contents + sdyn->size;
4575 abi_64_p = ABI_64_P (output_bfd);
4576 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4577 {
4578 Elf_Internal_Dyn dyn;
4579 bfd_boolean size;
4580
4581 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4582
4583 if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4584 {
4585 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4586 not to the start of the PLT. */
4587 if (htab->elf.sgotplt)
4588 {
4589 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4590 + htab->elf.sgotplt->output_offset);
4591 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4592 }
4593 }
4594 else if (htab->is_vxworks
4595 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4596 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4597 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4598 {
4599 if (stt_regidx == -1)
4600 {
4601 stt_regidx =
4602 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4603 if (stt_regidx == -1)
4604 return FALSE;
4605 }
4606 dyn.d_un.d_val = stt_regidx++;
4607 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4608 }
4609 else
4610 {
4611 asection *s;
4612
4613 switch (dyn.d_tag)
4614 {
4615 case DT_PLTGOT:
4616 s = htab->elf.splt;
4617 size = FALSE;
4618 break;
4619 case DT_PLTRELSZ:
4620 s = htab->elf.srelplt;
4621 size = TRUE;
4622 break;
4623 case DT_JMPREL:
4624 s = htab->elf.srelplt;
4625 size = FALSE;
4626 break;
4627 default:
4628 continue;
4629 }
4630
4631 if (s == NULL)
4632 dyn.d_un.d_val = 0;
4633 else
4634 {
4635 if (!size)
4636 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4637 else
4638 dyn.d_un.d_val = s->size;
4639 }
4640 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4641 }
4642 }
4643 return TRUE;
4644 }
4645
4646 /* Install the first PLT entry in a VxWorks executable and make sure that
4647 .rela.plt.unloaded relocations have the correct symbol indexes. */
4648
4649 static void
4650 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4651 {
4652 struct _bfd_sparc_elf_link_hash_table *htab;
4653 Elf_Internal_Rela rela;
4654 bfd_vma got_base;
4655 bfd_byte *loc;
4656
4657 htab = _bfd_sparc_elf_hash_table (info);
4658 BFD_ASSERT (htab != NULL);
4659
4660 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4661 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4662 + htab->elf.hgot->root.u.def.section->output_offset
4663 + htab->elf.hgot->root.u.def.value);
4664
4665 /* Install the initial PLT entry. */
4666 bfd_put_32 (output_bfd,
4667 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4668 htab->elf.splt->contents);
4669 bfd_put_32 (output_bfd,
4670 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4671 htab->elf.splt->contents + 4);
4672 bfd_put_32 (output_bfd,
4673 sparc_vxworks_exec_plt0_entry[2],
4674 htab->elf.splt->contents + 8);
4675 bfd_put_32 (output_bfd,
4676 sparc_vxworks_exec_plt0_entry[3],
4677 htab->elf.splt->contents + 12);
4678 bfd_put_32 (output_bfd,
4679 sparc_vxworks_exec_plt0_entry[4],
4680 htab->elf.splt->contents + 16);
4681
4682 loc = htab->srelplt2->contents;
4683
4684 /* Add an unloaded relocation for the initial entry's "sethi". */
4685 rela.r_offset = (htab->elf.splt->output_section->vma
4686 + htab->elf.splt->output_offset);
4687 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4688 rela.r_addend = 8;
4689 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4690 loc += sizeof (Elf32_External_Rela);
4691
4692 /* Likewise the following "or". */
4693 rela.r_offset += 4;
4694 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4695 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4696 loc += sizeof (Elf32_External_Rela);
4697
4698 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4699 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4700 in which symbols were output. */
4701 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4702 {
4703 Elf_Internal_Rela rel;
4704
4705 /* The entry's initial "sethi" (against _G_O_T_). */
4706 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4707 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4708 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4709 loc += sizeof (Elf32_External_Rela);
4710
4711 /* The following "or" (also against _G_O_T_). */
4712 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4713 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4714 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4715 loc += sizeof (Elf32_External_Rela);
4716
4717 /* The .got.plt entry (against _P_L_T_). */
4718 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4719 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4720 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4721 loc += sizeof (Elf32_External_Rela);
4722 }
4723 }
4724
4725 /* Install the first PLT entry in a VxWorks shared object. */
4726
4727 static void
4728 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4729 {
4730 struct _bfd_sparc_elf_link_hash_table *htab;
4731 unsigned int i;
4732
4733 htab = _bfd_sparc_elf_hash_table (info);
4734 BFD_ASSERT (htab != NULL);
4735
4736 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4737 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4738 htab->elf.splt->contents + i * 4);
4739 }
4740
4741 /* Finish up local dynamic symbol handling. We set the contents of
4742 various dynamic sections here. */
4743
4744 static bfd_boolean
4745 finish_local_dynamic_symbol (void **slot, void *inf)
4746 {
4747 struct elf_link_hash_entry *h
4748 = (struct elf_link_hash_entry *) *slot;
4749 struct bfd_link_info *info
4750 = (struct bfd_link_info *) inf;
4751
4752 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4753 h, NULL);
4754 }
4755
4756 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4757 here since undefined weak symbol may not be dynamic and may not be
4758 called for _bfd_sparc_elf_finish_dynamic_symbol. */
4759
4760 static bfd_boolean
4761 pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4762 void *inf)
4763 {
4764 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4765 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4766
4767 if (h->root.type != bfd_link_hash_undefweak
4768 || h->dynindx != -1)
4769 return TRUE;
4770
4771 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4772 h, NULL);
4773 }
4774
4775 bfd_boolean
4776 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4777 {
4778 bfd *dynobj;
4779 asection *sdyn;
4780 struct _bfd_sparc_elf_link_hash_table *htab;
4781
4782 htab = _bfd_sparc_elf_hash_table (info);
4783 BFD_ASSERT (htab != NULL);
4784 dynobj = htab->elf.dynobj;
4785
4786 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4787
4788 if (elf_hash_table (info)->dynamic_sections_created)
4789 {
4790 asection *splt;
4791
4792 splt = htab->elf.splt;
4793 BFD_ASSERT (splt != NULL && sdyn != NULL);
4794
4795 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4796 return FALSE;
4797
4798 /* Initialize the contents of the .plt section. */
4799 if (splt->size > 0)
4800 {
4801 if (htab->is_vxworks)
4802 {
4803 if (bfd_link_pic (info))
4804 sparc_vxworks_finish_shared_plt (output_bfd, info);
4805 else
4806 sparc_vxworks_finish_exec_plt (output_bfd, info);
4807 }
4808 else
4809 {
4810 memset (splt->contents, 0, htab->plt_header_size);
4811 if (!ABI_64_P (output_bfd))
4812 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4813 splt->contents + splt->size - 4);
4814 }
4815 }
4816
4817 if (elf_section_data (splt->output_section) != NULL)
4818 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4819 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4820 ? 0 : htab->plt_entry_size);
4821 }
4822
4823 /* Set the first entry in the global offset table to the address of
4824 the dynamic section. */
4825 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4826 {
4827 bfd_vma val = (sdyn ?
4828 sdyn->output_section->vma + sdyn->output_offset :
4829 0);
4830
4831 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4832 }
4833
4834 if (htab->elf.sgot)
4835 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4836 SPARC_ELF_WORD_BYTES (htab);
4837
4838 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4839 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4840
4841 /* Fill PLT entries for undefined weak symbols in PIE. */
4842 if (bfd_link_pie (info))
4843 bfd_hash_traverse (&info->hash->table,
4844 pie_finish_undefweak_symbol,
4845 info);
4846 return TRUE;
4847 }
4848
4849 \f
4850 /* Set the right machine number for a SPARC ELF file. */
4851
4852 bfd_boolean
4853 _bfd_sparc_elf_object_p (bfd *abfd)
4854 {
4855 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4856 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4857 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4858
4859 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4860 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4861 | ELF_SPARC_HWCAP_VIS3
4862 | ELF_SPARC_HWCAP_HPC);
4863 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4864 | ELF_SPARC_HWCAP_DES
4865 | ELF_SPARC_HWCAP_KASUMI
4866 | ELF_SPARC_HWCAP_CAMELLIA
4867 | ELF_SPARC_HWCAP_MD5
4868 | ELF_SPARC_HWCAP_SHA1
4869 | ELF_SPARC_HWCAP_SHA256
4870 | ELF_SPARC_HWCAP_SHA512
4871 | ELF_SPARC_HWCAP_MPMUL
4872 | ELF_SPARC_HWCAP_MONT
4873 | ELF_SPARC_HWCAP_CRC32C
4874 | ELF_SPARC_HWCAP_CBCOND
4875 | ELF_SPARC_HWCAP_PAUSE);
4876 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4877 | ELF_SPARC_HWCAP_IMA);
4878 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4879 | ELF_SPARC_HWCAP2_MWAIT
4880 | ELF_SPARC_HWCAP2_XMPMUL
4881 | ELF_SPARC_HWCAP2_XMONT);
4882 unsigned int m8_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC6
4883 | ELF_SPARC_HWCAP2_ONADDSUB
4884 | ELF_SPARC_HWCAP2_ONMUL
4885 | ELF_SPARC_HWCAP2_ONDIV
4886 | ELF_SPARC_HWCAP2_DICTUNP
4887 | ELF_SPARC_HWCAP2_FPCMPSHL
4888 | ELF_SPARC_HWCAP2_RLE
4889 | ELF_SPARC_HWCAP2_SHA3);
4890
4891 if (ABI_64_P (abfd))
4892 {
4893 unsigned long mach = bfd_mach_sparc_v9;
4894
4895 if (hwcaps2->i & m8_hwcaps2_mask)
4896 mach = bfd_mach_sparc_v9m8;
4897 else if (hwcaps2->i & v9m_hwcaps2_mask)
4898 mach = bfd_mach_sparc_v9m;
4899 else if (hwcaps->i & v9v_hwcaps_mask)
4900 mach = bfd_mach_sparc_v9v;
4901 else if (hwcaps->i & v9e_hwcaps_mask)
4902 mach = bfd_mach_sparc_v9e;
4903 else if (hwcaps->i & v9d_hwcaps_mask)
4904 mach = bfd_mach_sparc_v9d;
4905 else if (hwcaps->i & v9c_hwcaps_mask)
4906 mach = bfd_mach_sparc_v9c;
4907 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4908 mach = bfd_mach_sparc_v9b;
4909 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4910 mach = bfd_mach_sparc_v9a;
4911 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4912 }
4913 else
4914 {
4915 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4916 {
4917 if (hwcaps2->i & m8_hwcaps2_mask)
4918 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4919 bfd_mach_sparc_v8plusm8);
4920 else if (hwcaps2->i & v9m_hwcaps2_mask)
4921 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4922 bfd_mach_sparc_v8plusm);
4923 else if (hwcaps->i & v9v_hwcaps_mask)
4924 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4925 bfd_mach_sparc_v8plusv);
4926 else if (hwcaps->i & v9e_hwcaps_mask)
4927 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4928 bfd_mach_sparc_v8pluse);
4929 else if (hwcaps->i & v9d_hwcaps_mask)
4930 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4931 bfd_mach_sparc_v8plusd);
4932 else if (hwcaps->i & v9c_hwcaps_mask)
4933 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4934 bfd_mach_sparc_v8plusc);
4935 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4936 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4937 bfd_mach_sparc_v8plusb);
4938 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4939 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4940 bfd_mach_sparc_v8plusa);
4941 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4942 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4943 bfd_mach_sparc_v8plus);
4944 else
4945 return FALSE;
4946 }
4947 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4948 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4949 bfd_mach_sparc_sparclite_le);
4950 else
4951 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4952 }
4953 }
4954
4955 /* Return address for Ith PLT stub in section PLT, for relocation REL
4956 or (bfd_vma) -1 if it should not be included. */
4957
4958 bfd_vma
4959 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4960 {
4961 if (ABI_64_P (plt->owner))
4962 {
4963 bfd_vma j;
4964
4965 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4966 if (i < PLT64_LARGE_THRESHOLD)
4967 return plt->vma + i * PLT64_ENTRY_SIZE;
4968
4969 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4970 i -= j;
4971 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4972 }
4973 else
4974 return rel->address;
4975 }
4976
4977 /* Merge backend specific data from an object file to the output
4978 object file when linking. */
4979
4980 bfd_boolean
4981 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4982 {
4983 bfd *obfd = info->output_bfd;
4984 obj_attribute *in_attr, *in_attrs;
4985 obj_attribute *out_attr, *out_attrs;
4986
4987 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4988 {
4989 /* This is the first object. Copy the attributes. */
4990 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4991
4992 /* Use the Tag_null value to indicate the attributes have been
4993 initialized. */
4994 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4995
4996 return TRUE;
4997 }
4998
4999 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
5000 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
5001
5002 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
5003 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
5004
5005 out_attr->i |= in_attr->i;
5006 out_attr->type = 1;
5007
5008 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
5009 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
5010
5011 out_attr->i |= in_attr->i;
5012 out_attr->type = 1;
5013
5014 /* Merge Tag_compatibility attributes and any common GNU ones. */
5015 _bfd_elf_merge_object_attributes (ibfd, info);
5016
5017 return TRUE;
5018 }