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dynrelro section for read-only dynamic symbols copied into executable
[thirdparty/binutils-gdb.git] / bfd / elfxx-sparc.c
1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2016 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 ATTRIBUTE_UNUSED,
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 bfd_set_error (bfd_error_bad_value);
589 return NULL;
590 }
591
592 reloc_howto_type *
593 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
594 const char *r_name)
595 {
596 unsigned int i;
597
598 for (i = 0;
599 i < (sizeof (_bfd_sparc_elf_howto_table)
600 / sizeof (_bfd_sparc_elf_howto_table[0]));
601 i++)
602 if (_bfd_sparc_elf_howto_table[i].name != NULL
603 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
604 return &_bfd_sparc_elf_howto_table[i];
605
606 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
607 return &sparc_vtinherit_howto;
608 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
609 return &sparc_vtentry_howto;
610 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
611 return &sparc_rev32_howto;
612
613 return NULL;
614 }
615
616 reloc_howto_type *
617 _bfd_sparc_elf_info_to_howto_ptr (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 (_("invalid relocation type %d"), (int) r_type);
640 r_type = R_SPARC_NONE;
641 }
642 return &_bfd_sparc_elf_howto_table[r_type];
643 }
644 }
645
646 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
647 so just take advantage of that. */
648 #define SPARC_ELF_R_TYPE(r_info) \
649 ((r_info) & 0xff)
650
651 void
652 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
653 Elf_Internal_Rela *dst)
654 {
655 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
656
657 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
658 }
659 \f
660
661 /* The nop opcode we use. */
662 #define SPARC_NOP 0x01000000
663
664 #define SPARC_INSN_BYTES 4
665
666 /* The SPARC linker needs to keep track of the number of relocs that it
667 decides to copy as dynamic relocs in check_relocs for each symbol.
668 This is so that it can later discard them if they are found to be
669 unnecessary. We store the information in a field extending the
670 regular ELF linker hash table. */
671
672 struct _bfd_sparc_elf_dyn_relocs
673 {
674 struct _bfd_sparc_elf_dyn_relocs *next;
675
676 /* The input section of the reloc. */
677 asection *sec;
678
679 /* Total number of relocs copied for the input section. */
680 bfd_size_type count;
681
682 /* Number of pc-relative relocs copied for the input section. */
683 bfd_size_type pc_count;
684 };
685
686 /* SPARC ELF linker hash entry. */
687
688 struct _bfd_sparc_elf_link_hash_entry
689 {
690 struct elf_link_hash_entry elf;
691
692 /* Track dynamic relocs copied for this symbol. */
693 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
694
695 #define GOT_UNKNOWN 0
696 #define GOT_NORMAL 1
697 #define GOT_TLS_GD 2
698 #define GOT_TLS_IE 3
699 unsigned char tls_type;
700 };
701
702 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
703
704 struct _bfd_sparc_elf_obj_tdata
705 {
706 struct elf_obj_tdata root;
707
708 /* tls_type for each local got entry. */
709 char *local_got_tls_type;
710
711 /* TRUE if TLS GD relocs has been seen for this object. */
712 bfd_boolean has_tlsgd;
713 };
714
715 #define _bfd_sparc_elf_tdata(abfd) \
716 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
717
718 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
719 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
720
721 #define is_sparc_elf(bfd) \
722 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
723 && elf_tdata (bfd) != NULL \
724 && elf_object_id (bfd) == SPARC_ELF_DATA)
725
726 bfd_boolean
727 _bfd_sparc_elf_mkobject (bfd *abfd)
728 {
729 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
730 SPARC_ELF_DATA);
731 }
732
733 static void
734 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
735 {
736 bfd_put_32 (abfd, val, ptr);
737 }
738
739 static void
740 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
741 {
742 bfd_put_64 (abfd, val, ptr);
743 }
744
745 static void
746 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
747 {
748 const struct elf_backend_data *bed;
749 bfd_byte *loc;
750
751 bed = get_elf_backend_data (abfd);
752 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
753 bed->s->swap_reloca_out (abfd, rel, loc);
754 }
755
756 static bfd_vma
757 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
758 bfd_vma rel_index ATTRIBUTE_UNUSED,
759 bfd_vma type ATTRIBUTE_UNUSED)
760 {
761 return ELF64_R_INFO (rel_index,
762 (in_rel ?
763 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
764 type) : type));
765 }
766
767 static bfd_vma
768 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
769 bfd_vma rel_index, bfd_vma type)
770 {
771 return ELF32_R_INFO (rel_index, type);
772 }
773
774 static bfd_vma
775 sparc_elf_r_symndx_64 (bfd_vma r_info)
776 {
777 bfd_vma r_symndx = ELF32_R_SYM (r_info);
778 return (r_symndx >> 24);
779 }
780
781 static bfd_vma
782 sparc_elf_r_symndx_32 (bfd_vma r_info)
783 {
784 return ELF32_R_SYM (r_info);
785 }
786
787 /* PLT/GOT stuff */
788
789 #define PLT32_ENTRY_SIZE 12
790 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
791
792 /* The first four entries in a 32-bit procedure linkage table are reserved,
793 and the initial contents are unimportant (we zero them out).
794 Subsequent entries look like this. See the SVR4 ABI SPARC
795 supplement to see how this works. */
796
797 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
798 #define PLT32_ENTRY_WORD0 0x03000000
799 /* b,a .plt0. We fill in the offset later. */
800 #define PLT32_ENTRY_WORD1 0x30800000
801 /* nop. */
802 #define PLT32_ENTRY_WORD2 SPARC_NOP
803
804 static int
805 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
806 bfd_vma max ATTRIBUTE_UNUSED,
807 bfd_vma *r_offset)
808 {
809 bfd_put_32 (output_bfd,
810 PLT32_ENTRY_WORD0 + offset,
811 splt->contents + offset);
812 bfd_put_32 (output_bfd,
813 (PLT32_ENTRY_WORD1
814 + (((- (offset + 4)) >> 2) & 0x3fffff)),
815 splt->contents + offset + 4);
816 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
817 splt->contents + offset + 8);
818
819 *r_offset = offset;
820
821 return offset / PLT32_ENTRY_SIZE - 4;
822 }
823
824 /* Both the headers and the entries are icache aligned. */
825 #define PLT64_ENTRY_SIZE 32
826 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
827 #define PLT64_LARGE_THRESHOLD 32768
828
829 static int
830 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
831 bfd_vma max, bfd_vma *r_offset)
832 {
833 unsigned char *entry = splt->contents + offset;
834 const unsigned int nop = SPARC_NOP;
835 int plt_index;
836
837 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
838 {
839 unsigned int sethi, ba;
840
841 *r_offset = offset;
842
843 plt_index = (offset / PLT64_ENTRY_SIZE);
844
845 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
846 ba = 0x30680000
847 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
848
849 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
850 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
851 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
852 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
853 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
854 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
855 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
856 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
857 }
858 else
859 {
860 unsigned char *ptr;
861 unsigned int ldx;
862 int block, last_block, ofs, last_ofs, chunks_this_block;
863 const int insn_chunk_size = (6 * 4);
864 const int ptr_chunk_size = (1 * 8);
865 const int entries_per_block = 160;
866 const int block_size = entries_per_block * (insn_chunk_size
867 + ptr_chunk_size);
868
869 /* Entries 32768 and higher are grouped into blocks of 160.
870 The blocks are further subdivided into 160 sequences of
871 6 instructions and 160 pointers. If a block does not require
872 the full 160 entries, let's say it requires N, then there
873 will be N sequences of 6 instructions and N pointers. */
874
875 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
876 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
877
878 block = offset / block_size;
879 last_block = max / block_size;
880 if (block != last_block)
881 {
882 chunks_this_block = 160;
883 }
884 else
885 {
886 last_ofs = max % block_size;
887 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
888 }
889
890 ofs = offset % block_size;
891
892 plt_index = (PLT64_LARGE_THRESHOLD +
893 (block * 160) +
894 (ofs / insn_chunk_size));
895
896 ptr = splt->contents
897 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
898 + (block * block_size)
899 + (chunks_this_block * insn_chunk_size)
900 + (ofs / insn_chunk_size) * ptr_chunk_size;
901
902 *r_offset = (bfd_vma) (ptr - splt->contents);
903
904 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
905
906 /* mov %o7,%g5
907 call .+8
908 nop
909 ldx [%o7+P],%g1
910 jmpl %o7+%g1,%g1
911 mov %g5,%o7 */
912 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
913 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
914 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
915 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
916 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
917 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
918
919 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
920 }
921
922 return plt_index - 4;
923 }
924
925 /* The format of the first PLT entry in a VxWorks executable. */
926 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
927 {
928 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
929 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
930 0xc4008000, /* ld [ %g2 ], %g2 */
931 0x81c08000, /* jmp %g2 */
932 0x01000000 /* nop */
933 };
934
935 /* The format of subsequent PLT entries. */
936 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
937 {
938 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
939 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
940 0xc2004000, /* ld [ %g1 ], %g1 */
941 0x81c04000, /* jmp %g1 */
942 0x01000000, /* nop */
943 0x03000000, /* sethi %hi(f@pltindex), %g1 */
944 0x10800000, /* b _PLT_resolve */
945 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
946 };
947
948 /* The format of the first PLT entry in a VxWorks shared object. */
949 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
950 {
951 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
952 0x81c08000, /* jmp %g2 */
953 0x01000000 /* nop */
954 };
955
956 /* The format of subsequent PLT entries. */
957 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
958 {
959 0x03000000, /* sethi %hi(f@got), %g1 */
960 0x82106000, /* or %g1, %lo(f@got), %g1 */
961 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
962 0x81c04000, /* jmp %g1 */
963 0x01000000, /* nop */
964 0x03000000, /* sethi %hi(f@pltindex), %g1 */
965 0x10800000, /* b _PLT_resolve */
966 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
967 };
968
969 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
970 htab->put_word(bfd, val, ptr)
971
972 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
973 htab->r_info(in_rel, index, type)
974
975 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
976 htab->r_symndx(r_info)
977
978 #define SPARC_ELF_WORD_BYTES(htab) \
979 htab->bytes_per_word
980
981 #define SPARC_ELF_RELA_BYTES(htab) \
982 htab->bytes_per_rela
983
984 #define SPARC_ELF_DTPOFF_RELOC(htab) \
985 htab->dtpoff_reloc
986
987 #define SPARC_ELF_DTPMOD_RELOC(htab) \
988 htab->dtpmod_reloc
989
990 #define SPARC_ELF_TPOFF_RELOC(htab) \
991 htab->tpoff_reloc
992
993 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
994 htab->build_plt_entry (obfd, splt, off, max, r_off)
995
996 /* Create an entry in an SPARC ELF linker hash table. */
997
998 static struct bfd_hash_entry *
999 link_hash_newfunc (struct bfd_hash_entry *entry,
1000 struct bfd_hash_table *table, const char *string)
1001 {
1002 /* Allocate the structure if it has not already been allocated by a
1003 subclass. */
1004 if (entry == NULL)
1005 {
1006 entry = bfd_hash_allocate (table,
1007 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1008 if (entry == NULL)
1009 return entry;
1010 }
1011
1012 /* Call the allocation method of the superclass. */
1013 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1014 if (entry != NULL)
1015 {
1016 struct _bfd_sparc_elf_link_hash_entry *eh;
1017
1018 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1019 eh->dyn_relocs = NULL;
1020 eh->tls_type = GOT_UNKNOWN;
1021 }
1022
1023 return entry;
1024 }
1025
1026 /* The name of the dynamic interpreter. This is put in the .interp
1027 section. */
1028
1029 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1030 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1031
1032 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1033 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1034 as global symbol. We reuse indx and dynstr_index for local symbol
1035 hash since they aren't used by global symbols in this backend. */
1036
1037 static hashval_t
1038 elf_sparc_local_htab_hash (const void *ptr)
1039 {
1040 struct elf_link_hash_entry *h
1041 = (struct elf_link_hash_entry *) ptr;
1042 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1043 }
1044
1045 /* Compare local hash entries. */
1046
1047 static int
1048 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1049 {
1050 struct elf_link_hash_entry *h1
1051 = (struct elf_link_hash_entry *) ptr1;
1052 struct elf_link_hash_entry *h2
1053 = (struct elf_link_hash_entry *) ptr2;
1054
1055 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1056 }
1057
1058 /* Find and/or create a hash entry for local symbol. */
1059
1060 static struct elf_link_hash_entry *
1061 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1062 bfd *abfd, const Elf_Internal_Rela *rel,
1063 bfd_boolean create)
1064 {
1065 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1066 asection *sec = abfd->sections;
1067 unsigned long r_symndx;
1068 hashval_t h;
1069 void **slot;
1070
1071 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1072 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1073
1074 e.elf.indx = sec->id;
1075 e.elf.dynstr_index = r_symndx;
1076 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1077 create ? INSERT : NO_INSERT);
1078
1079 if (!slot)
1080 return NULL;
1081
1082 if (*slot)
1083 {
1084 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1085 return &ret->elf;
1086 }
1087
1088 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1089 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1090 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1091 if (ret)
1092 {
1093 memset (ret, 0, sizeof (*ret));
1094 ret->elf.indx = sec->id;
1095 ret->elf.dynstr_index = r_symndx;
1096 ret->elf.dynindx = -1;
1097 ret->elf.plt.offset = (bfd_vma) -1;
1098 ret->elf.got.offset = (bfd_vma) -1;
1099 *slot = ret;
1100 }
1101 return &ret->elf;
1102 }
1103
1104 /* Destroy a SPARC ELF linker hash table. */
1105
1106 static void
1107 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1108 {
1109 struct _bfd_sparc_elf_link_hash_table *htab
1110 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1111
1112 if (htab->loc_hash_table)
1113 htab_delete (htab->loc_hash_table);
1114 if (htab->loc_hash_memory)
1115 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1116 _bfd_elf_link_hash_table_free (obfd);
1117 }
1118
1119 /* Create a SPARC ELF linker hash table. */
1120
1121 struct bfd_link_hash_table *
1122 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1123 {
1124 struct _bfd_sparc_elf_link_hash_table *ret;
1125 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1126
1127 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1128 if (ret == NULL)
1129 return NULL;
1130
1131 if (ABI_64_P (abfd))
1132 {
1133 ret->put_word = sparc_put_word_64;
1134 ret->r_info = sparc_elf_r_info_64;
1135 ret->r_symndx = sparc_elf_r_symndx_64;
1136 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1137 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1138 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1139 ret->word_align_power = 3;
1140 ret->align_power_max = 4;
1141 ret->bytes_per_word = 8;
1142 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1143 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1144 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1145
1146 ret->build_plt_entry = sparc64_plt_entry_build;
1147 ret->plt_header_size = PLT64_HEADER_SIZE;
1148 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1149 }
1150 else
1151 {
1152 ret->put_word = sparc_put_word_32;
1153 ret->r_info = sparc_elf_r_info_32;
1154 ret->r_symndx = sparc_elf_r_symndx_32;
1155 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1156 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1157 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1158 ret->word_align_power = 2;
1159 ret->align_power_max = 3;
1160 ret->bytes_per_word = 4;
1161 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1162 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1163 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1164
1165 ret->build_plt_entry = sparc32_plt_entry_build;
1166 ret->plt_header_size = PLT32_HEADER_SIZE;
1167 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1168 }
1169
1170 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1171 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1172 SPARC_ELF_DATA))
1173 {
1174 free (ret);
1175 return NULL;
1176 }
1177
1178 ret->loc_hash_table = htab_try_create (1024,
1179 elf_sparc_local_htab_hash,
1180 elf_sparc_local_htab_eq,
1181 NULL);
1182 ret->loc_hash_memory = objalloc_create ();
1183 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1184 {
1185 _bfd_sparc_elf_link_hash_table_free (abfd);
1186 return NULL;
1187 }
1188 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1189
1190 return &ret->elf.root;
1191 }
1192
1193 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1194 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1195 hash table. */
1196
1197 bfd_boolean
1198 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1199 struct bfd_link_info *info)
1200 {
1201 struct _bfd_sparc_elf_link_hash_table *htab;
1202
1203 htab = _bfd_sparc_elf_hash_table (info);
1204 BFD_ASSERT (htab != NULL);
1205
1206 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1207 return FALSE;
1208
1209 if (htab->is_vxworks)
1210 {
1211 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1212 return FALSE;
1213 if (bfd_link_pic (info))
1214 {
1215 htab->plt_header_size
1216 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1217 htab->plt_entry_size
1218 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1219 }
1220 else
1221 {
1222 htab->plt_header_size
1223 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1224 htab->plt_entry_size
1225 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1226 }
1227 }
1228
1229 if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss
1230 || (!bfd_link_pic (info) && !htab->elf.srelbss))
1231 abort ();
1232
1233 return TRUE;
1234 }
1235
1236 static bfd_boolean
1237 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1238 {
1239 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1240 struct elf_link_hash_table *htab = elf_hash_table (info);
1241 flagword flags, pltflags;
1242 asection *s;
1243
1244 if (htab->irelifunc != NULL || htab->iplt != NULL)
1245 return TRUE;
1246
1247 flags = bed->dynamic_sec_flags;
1248 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1249
1250 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1251 if (s == NULL
1252 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1253 return FALSE;
1254 htab->iplt = s;
1255
1256 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1257 flags | SEC_READONLY);
1258 if (s == NULL
1259 || ! bfd_set_section_alignment (abfd, s,
1260 bed->s->log_file_align))
1261 return FALSE;
1262 htab->irelplt = s;
1263
1264 return TRUE;
1265 }
1266
1267 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1268
1269 void
1270 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1271 struct elf_link_hash_entry *dir,
1272 struct elf_link_hash_entry *ind)
1273 {
1274 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1275
1276 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1277 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1278
1279 if (eind->dyn_relocs != NULL)
1280 {
1281 if (edir->dyn_relocs != NULL)
1282 {
1283 struct _bfd_sparc_elf_dyn_relocs **pp;
1284 struct _bfd_sparc_elf_dyn_relocs *p;
1285
1286 /* Add reloc counts against the indirect sym to the direct sym
1287 list. Merge any entries against the same section. */
1288 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1289 {
1290 struct _bfd_sparc_elf_dyn_relocs *q;
1291
1292 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1293 if (q->sec == p->sec)
1294 {
1295 q->pc_count += p->pc_count;
1296 q->count += p->count;
1297 *pp = p->next;
1298 break;
1299 }
1300 if (q == NULL)
1301 pp = &p->next;
1302 }
1303 *pp = edir->dyn_relocs;
1304 }
1305
1306 edir->dyn_relocs = eind->dyn_relocs;
1307 eind->dyn_relocs = NULL;
1308 }
1309
1310 if (ind->root.type == bfd_link_hash_indirect
1311 && dir->got.refcount <= 0)
1312 {
1313 edir->tls_type = eind->tls_type;
1314 eind->tls_type = GOT_UNKNOWN;
1315 }
1316 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1317 }
1318
1319 static int
1320 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1321 int r_type, int is_local)
1322 {
1323 if (! ABI_64_P (abfd)
1324 && r_type == R_SPARC_TLS_GD_HI22
1325 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1326 r_type = R_SPARC_REV32;
1327
1328 if (bfd_link_pic (info))
1329 return r_type;
1330
1331 switch (r_type)
1332 {
1333 case R_SPARC_TLS_GD_HI22:
1334 if (is_local)
1335 return R_SPARC_TLS_LE_HIX22;
1336 return R_SPARC_TLS_IE_HI22;
1337 case R_SPARC_TLS_GD_LO10:
1338 if (is_local)
1339 return R_SPARC_TLS_LE_LOX10;
1340 return R_SPARC_TLS_IE_LO10;
1341 case R_SPARC_TLS_IE_HI22:
1342 if (is_local)
1343 return R_SPARC_TLS_LE_HIX22;
1344 return r_type;
1345 case R_SPARC_TLS_IE_LO10:
1346 if (is_local)
1347 return R_SPARC_TLS_LE_LOX10;
1348 return r_type;
1349 case R_SPARC_TLS_LDM_HI22:
1350 return R_SPARC_TLS_LE_HIX22;
1351 case R_SPARC_TLS_LDM_LO10:
1352 return R_SPARC_TLS_LE_LOX10;
1353 }
1354
1355 return r_type;
1356 }
1357 \f
1358 /* Look through the relocs for a section during the first phase, and
1359 allocate space in the global offset table or procedure linkage
1360 table. */
1361
1362 bfd_boolean
1363 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1364 asection *sec, const Elf_Internal_Rela *relocs)
1365 {
1366 struct _bfd_sparc_elf_link_hash_table *htab;
1367 Elf_Internal_Shdr *symtab_hdr;
1368 struct elf_link_hash_entry **sym_hashes;
1369 const Elf_Internal_Rela *rel;
1370 const Elf_Internal_Rela *rel_end;
1371 asection *sreloc;
1372 int num_relocs;
1373 bfd_boolean checked_tlsgd = FALSE;
1374
1375 if (bfd_link_relocatable (info))
1376 return TRUE;
1377
1378 htab = _bfd_sparc_elf_hash_table (info);
1379 BFD_ASSERT (htab != NULL);
1380 symtab_hdr = &elf_symtab_hdr (abfd);
1381 sym_hashes = elf_sym_hashes (abfd);
1382
1383 sreloc = NULL;
1384
1385 if (ABI_64_P (abfd))
1386 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1387 else
1388 num_relocs = sec->reloc_count;
1389
1390 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1391
1392 if (htab->elf.dynobj == NULL)
1393 htab->elf.dynobj = abfd;
1394 if (!create_ifunc_sections (htab->elf.dynobj, info))
1395 return FALSE;
1396
1397 rel_end = relocs + num_relocs;
1398 for (rel = relocs; rel < rel_end; rel++)
1399 {
1400 unsigned int r_type;
1401 unsigned long r_symndx;
1402 struct elf_link_hash_entry *h;
1403 Elf_Internal_Sym *isym;
1404
1405 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1406 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1407
1408 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1409 {
1410 /* xgettext:c-format */
1411 _bfd_error_handler (_("%B: bad symbol index: %d"), abfd, r_symndx);
1412 return FALSE;
1413 }
1414
1415 isym = NULL;
1416 if (r_symndx < symtab_hdr->sh_info)
1417 {
1418 /* A local symbol. */
1419 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1420 abfd, r_symndx);
1421 if (isym == NULL)
1422 return FALSE;
1423
1424 /* Check relocation against local STT_GNU_IFUNC symbol. */
1425 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1426 {
1427 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1428 TRUE);
1429 if (h == NULL)
1430 return FALSE;
1431
1432 /* Fake a STT_GNU_IFUNC symbol. */
1433 h->type = STT_GNU_IFUNC;
1434 h->def_regular = 1;
1435 h->ref_regular = 1;
1436 h->forced_local = 1;
1437 h->root.type = bfd_link_hash_defined;
1438 }
1439 else
1440 h = NULL;
1441 }
1442 else
1443 {
1444 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1445 while (h->root.type == bfd_link_hash_indirect
1446 || h->root.type == bfd_link_hash_warning)
1447 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1448
1449 /* PR15323, ref flags aren't set for references in the same
1450 object. */
1451 h->root.non_ir_ref = 1;
1452 }
1453
1454 if (h && h->type == STT_GNU_IFUNC)
1455 {
1456 if (h->def_regular)
1457 {
1458 h->ref_regular = 1;
1459 h->plt.refcount += 1;
1460 }
1461 }
1462
1463 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1464 with R_SPARC_TLS_GD_HI22. */
1465 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1466 switch (r_type)
1467 {
1468 case R_SPARC_TLS_GD_HI22:
1469 {
1470 const Elf_Internal_Rela *relt;
1471
1472 for (relt = rel + 1; relt < rel_end; relt++)
1473 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1474 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1475 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1476 break;
1477 checked_tlsgd = TRUE;
1478 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1479 }
1480 break;
1481 case R_SPARC_TLS_GD_LO10:
1482 case R_SPARC_TLS_GD_ADD:
1483 case R_SPARC_TLS_GD_CALL:
1484 checked_tlsgd = TRUE;
1485 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1486 break;
1487 }
1488
1489 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1490 switch (r_type)
1491 {
1492 case R_SPARC_TLS_LDM_HI22:
1493 case R_SPARC_TLS_LDM_LO10:
1494 htab->tls_ldm_got.refcount += 1;
1495 break;
1496
1497 case R_SPARC_TLS_LE_HIX22:
1498 case R_SPARC_TLS_LE_LOX10:
1499 if (bfd_link_pic (info))
1500 goto r_sparc_plt32;
1501 break;
1502
1503 case R_SPARC_TLS_IE_HI22:
1504 case R_SPARC_TLS_IE_LO10:
1505 if (bfd_link_pic (info))
1506 info->flags |= DF_STATIC_TLS;
1507 /* Fall through */
1508
1509 case R_SPARC_GOT10:
1510 case R_SPARC_GOT13:
1511 case R_SPARC_GOT22:
1512 case R_SPARC_GOTDATA_HIX22:
1513 case R_SPARC_GOTDATA_LOX10:
1514 case R_SPARC_GOTDATA_OP_HIX22:
1515 case R_SPARC_GOTDATA_OP_LOX10:
1516 case R_SPARC_TLS_GD_HI22:
1517 case R_SPARC_TLS_GD_LO10:
1518 /* This symbol requires a global offset table entry. */
1519 {
1520 int tls_type, old_tls_type;
1521
1522 switch (r_type)
1523 {
1524 default:
1525 case R_SPARC_GOT10:
1526 case R_SPARC_GOT13:
1527 case R_SPARC_GOT22:
1528 case R_SPARC_GOTDATA_OP_HIX22:
1529 case R_SPARC_GOTDATA_OP_LOX10:
1530 tls_type = GOT_NORMAL;
1531 break;
1532 case R_SPARC_TLS_GD_HI22:
1533 case R_SPARC_TLS_GD_LO10:
1534 tls_type = GOT_TLS_GD;
1535 break;
1536 case R_SPARC_TLS_IE_HI22:
1537 case R_SPARC_TLS_IE_LO10:
1538 tls_type = GOT_TLS_IE;
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 switch (r_type)
1568 {
1569 case R_SPARC_GOTDATA_OP_HIX22:
1570 case R_SPARC_GOTDATA_OP_LOX10:
1571 break;
1572
1573 default:
1574 local_got_refcounts[r_symndx] += 1;
1575 break;
1576 }
1577 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1578 }
1579
1580 /* If a TLS symbol is accessed using IE at least once,
1581 there is no point to use dynamic model for it. */
1582 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1583 && (old_tls_type != GOT_TLS_GD
1584 || tls_type != GOT_TLS_IE))
1585 {
1586 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1587 tls_type = old_tls_type;
1588 else
1589 {
1590 _bfd_error_handler
1591 /* xgettext:c-format */
1592 (_("%B: `%s' accessed both as normal and thread local symbol"),
1593 abfd, h ? h->root.root.string : "<local>");
1594 return FALSE;
1595 }
1596 }
1597
1598 if (old_tls_type != tls_type)
1599 {
1600 if (h != NULL)
1601 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1602 else
1603 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1604 }
1605 }
1606
1607 if (htab->elf.sgot == NULL)
1608 {
1609 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1610 return FALSE;
1611 }
1612 break;
1613
1614 case R_SPARC_TLS_GD_CALL:
1615 case R_SPARC_TLS_LDM_CALL:
1616 if (bfd_link_pic (info))
1617 {
1618 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1619 __tls_get_addr. */
1620 struct bfd_link_hash_entry *bh = NULL;
1621 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1622 "__tls_get_addr", 0,
1623 bfd_und_section_ptr, 0,
1624 NULL, FALSE, FALSE,
1625 &bh))
1626 return FALSE;
1627 h = (struct elf_link_hash_entry *) bh;
1628 }
1629 else
1630 break;
1631 /* Fall through */
1632
1633 case R_SPARC_PLT32:
1634 case R_SPARC_WPLT30:
1635 case R_SPARC_HIPLT22:
1636 case R_SPARC_LOPLT10:
1637 case R_SPARC_PCPLT32:
1638 case R_SPARC_PCPLT22:
1639 case R_SPARC_PCPLT10:
1640 case R_SPARC_PLT64:
1641 /* This symbol requires a procedure linkage table entry. We
1642 actually build the entry in adjust_dynamic_symbol,
1643 because this might be a case of linking PIC code without
1644 linking in any dynamic objects, in which case we don't
1645 need to generate a procedure linkage table after all. */
1646
1647 if (h == NULL)
1648 {
1649 if (! ABI_64_P (abfd))
1650 {
1651 /* The Solaris native assembler will generate a WPLT30
1652 reloc for a local symbol if you assemble a call from
1653 one section to another when using -K pic. We treat
1654 it as WDISP30. */
1655 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1656 goto r_sparc_plt32;
1657 break;
1658 }
1659 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1660 else if (r_type == R_SPARC_WPLT30)
1661 break;
1662
1663 /* It does not make sense to have a procedure linkage
1664 table entry for a local symbol. */
1665 bfd_set_error (bfd_error_bad_value);
1666 return FALSE;
1667 }
1668
1669 h->needs_plt = 1;
1670
1671 {
1672 int this_r_type;
1673
1674 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1675 if (this_r_type == R_SPARC_PLT32
1676 || this_r_type == R_SPARC_PLT64)
1677 goto r_sparc_plt32;
1678 }
1679 h->plt.refcount += 1;
1680 break;
1681
1682 case R_SPARC_PC10:
1683 case R_SPARC_PC22:
1684 case R_SPARC_PC_HH22:
1685 case R_SPARC_PC_HM10:
1686 case R_SPARC_PC_LM22:
1687 if (h != NULL)
1688 h->non_got_ref = 1;
1689
1690 if (h != NULL
1691 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1692 break;
1693 /* Fall through. */
1694
1695 case R_SPARC_DISP8:
1696 case R_SPARC_DISP16:
1697 case R_SPARC_DISP32:
1698 case R_SPARC_DISP64:
1699 case R_SPARC_WDISP30:
1700 case R_SPARC_WDISP22:
1701 case R_SPARC_WDISP19:
1702 case R_SPARC_WDISP16:
1703 case R_SPARC_WDISP10:
1704 case R_SPARC_8:
1705 case R_SPARC_16:
1706 case R_SPARC_32:
1707 case R_SPARC_HI22:
1708 case R_SPARC_22:
1709 case R_SPARC_13:
1710 case R_SPARC_LO10:
1711 case R_SPARC_UA16:
1712 case R_SPARC_UA32:
1713 case R_SPARC_10:
1714 case R_SPARC_11:
1715 case R_SPARC_64:
1716 case R_SPARC_OLO10:
1717 case R_SPARC_HH22:
1718 case R_SPARC_HM10:
1719 case R_SPARC_LM22:
1720 case R_SPARC_7:
1721 case R_SPARC_5:
1722 case R_SPARC_6:
1723 case R_SPARC_HIX22:
1724 case R_SPARC_LOX10:
1725 case R_SPARC_H44:
1726 case R_SPARC_M44:
1727 case R_SPARC_L44:
1728 case R_SPARC_H34:
1729 case R_SPARC_UA64:
1730 if (h != NULL)
1731 h->non_got_ref = 1;
1732
1733 r_sparc_plt32:
1734 if (h != NULL && !bfd_link_pic (info))
1735 {
1736 /* We may need a .plt entry if the function this reloc
1737 refers to is in a shared lib. */
1738 h->plt.refcount += 1;
1739 }
1740
1741 /* If we are creating a shared library, and this is a reloc
1742 against a global symbol, or a non PC relative reloc
1743 against a local symbol, then we need to copy the reloc
1744 into the shared library. However, if we are linking with
1745 -Bsymbolic, we do not need to copy a reloc against a
1746 global symbol which is defined in an object we are
1747 including in the link (i.e., DEF_REGULAR is set). At
1748 this point we have not seen all the input files, so it is
1749 possible that DEF_REGULAR is not set now but will be set
1750 later (it is never cleared). In case of a weak definition,
1751 DEF_REGULAR may be cleared later by a strong definition in
1752 a shared library. We account for that possibility below by
1753 storing information in the relocs_copied field of the hash
1754 table entry. A similar situation occurs when creating
1755 shared libraries and symbol visibility changes render the
1756 symbol local.
1757
1758 If on the other hand, we are creating an executable, we
1759 may need to keep relocations for symbols satisfied by a
1760 dynamic library if we manage to avoid copy relocs for the
1761 symbol. */
1762 if ((bfd_link_pic (info)
1763 && (sec->flags & SEC_ALLOC) != 0
1764 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1765 || (h != NULL
1766 && (! SYMBOLIC_BIND (info, h)
1767 || h->root.type == bfd_link_hash_defweak
1768 || !h->def_regular))))
1769 || (!bfd_link_pic (info)
1770 && (sec->flags & SEC_ALLOC) != 0
1771 && h != NULL
1772 && (h->root.type == bfd_link_hash_defweak
1773 || !h->def_regular))
1774 || (!bfd_link_pic (info)
1775 && h != NULL
1776 && h->type == STT_GNU_IFUNC))
1777 {
1778 struct _bfd_sparc_elf_dyn_relocs *p;
1779 struct _bfd_sparc_elf_dyn_relocs **head;
1780
1781 /* When creating a shared object, we must copy these
1782 relocs into the output file. We create a reloc
1783 section in dynobj and make room for the reloc. */
1784 if (sreloc == NULL)
1785 {
1786 sreloc = _bfd_elf_make_dynamic_reloc_section
1787 (sec, htab->elf.dynobj, htab->word_align_power,
1788 abfd, /*rela?*/ TRUE);
1789
1790 if (sreloc == NULL)
1791 return FALSE;
1792 }
1793
1794 /* If this is a global symbol, we count the number of
1795 relocations we need for this symbol. */
1796 if (h != NULL)
1797 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1798 else
1799 {
1800 /* Track dynamic relocs needed for local syms too.
1801 We really need local syms available to do this
1802 easily. Oh well. */
1803 asection *s;
1804 void *vpp;
1805
1806 BFD_ASSERT (isym != NULL);
1807 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1808 if (s == NULL)
1809 s = sec;
1810
1811 vpp = &elf_section_data (s)->local_dynrel;
1812 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1813 }
1814
1815 p = *head;
1816 if (p == NULL || p->sec != sec)
1817 {
1818 bfd_size_type amt = sizeof *p;
1819 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1820 bfd_alloc (htab->elf.dynobj, amt));
1821 if (p == NULL)
1822 return FALSE;
1823 p->next = *head;
1824 *head = p;
1825 p->sec = sec;
1826 p->count = 0;
1827 p->pc_count = 0;
1828 }
1829
1830 p->count += 1;
1831 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1832 p->pc_count += 1;
1833 }
1834
1835 break;
1836
1837 case R_SPARC_GNU_VTINHERIT:
1838 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1839 return FALSE;
1840 break;
1841
1842 case R_SPARC_GNU_VTENTRY:
1843 BFD_ASSERT (h != NULL);
1844 if (h != NULL
1845 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1846 return FALSE;
1847 break;
1848
1849 case R_SPARC_REGISTER:
1850 /* Nothing to do. */
1851 break;
1852
1853 default:
1854 break;
1855 }
1856 }
1857
1858 return TRUE;
1859 }
1860 \f
1861 asection *
1862 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1863 struct bfd_link_info *info,
1864 Elf_Internal_Rela *rel,
1865 struct elf_link_hash_entry *h,
1866 Elf_Internal_Sym *sym)
1867 {
1868 if (h != NULL)
1869 switch (SPARC_ELF_R_TYPE (rel->r_info))
1870 {
1871 case R_SPARC_GNU_VTINHERIT:
1872 case R_SPARC_GNU_VTENTRY:
1873 return NULL;
1874 }
1875
1876 /* FIXME: The test here, in check_relocs and in relocate_section
1877 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
1878 if (bfd_link_pic (info))
1879 {
1880 switch (SPARC_ELF_R_TYPE (rel->r_info))
1881 {
1882 case R_SPARC_TLS_GD_CALL:
1883 case R_SPARC_TLS_LDM_CALL:
1884 /* This reloc implicitly references __tls_get_addr. We know
1885 another reloc will reference the same symbol as the one
1886 on this reloc, so the real symbol and section will be
1887 gc marked when processing the other reloc. That lets
1888 us handle __tls_get_addr here. */
1889 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1890 FALSE, FALSE, TRUE);
1891 BFD_ASSERT (h != NULL);
1892 h->mark = 1;
1893 if (h->u.weakdef != NULL)
1894 h->u.weakdef->mark = 1;
1895 sym = NULL;
1896 }
1897 }
1898
1899 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1900 }
1901
1902 static Elf_Internal_Rela *
1903 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1904 Elf_Internal_Rela *relend,
1905 bfd_vma offset)
1906 {
1907 while (rel < relend)
1908 {
1909 if (rel->r_offset == offset)
1910 return rel;
1911 rel++;
1912 }
1913 return NULL;
1914 }
1915
1916 /* Update the got entry reference counts for the section being removed. */
1917 bfd_boolean
1918 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1919 asection *sec, const Elf_Internal_Rela *relocs)
1920 {
1921 struct _bfd_sparc_elf_link_hash_table *htab;
1922 Elf_Internal_Shdr *symtab_hdr;
1923 struct elf_link_hash_entry **sym_hashes;
1924 bfd_signed_vma *local_got_refcounts;
1925 const Elf_Internal_Rela *rel, *relend;
1926
1927 if (bfd_link_relocatable (info))
1928 return TRUE;
1929
1930 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1931
1932 elf_section_data (sec)->local_dynrel = NULL;
1933
1934 htab = _bfd_sparc_elf_hash_table (info);
1935 BFD_ASSERT (htab != NULL);
1936 symtab_hdr = &elf_symtab_hdr (abfd);
1937 sym_hashes = elf_sym_hashes (abfd);
1938 local_got_refcounts = elf_local_got_refcounts (abfd);
1939
1940 relend = relocs + sec->reloc_count;
1941 for (rel = relocs; rel < relend; rel++)
1942 {
1943 unsigned long r_symndx;
1944 unsigned int r_type;
1945 struct elf_link_hash_entry *h = NULL;
1946
1947 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1948 if (r_symndx >= symtab_hdr->sh_info)
1949 {
1950 struct _bfd_sparc_elf_link_hash_entry *eh;
1951 struct _bfd_sparc_elf_dyn_relocs **pp;
1952 struct _bfd_sparc_elf_dyn_relocs *p;
1953
1954 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1955 while (h->root.type == bfd_link_hash_indirect
1956 || h->root.type == bfd_link_hash_warning)
1957 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1958 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1959 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1960 if (p->sec == sec)
1961 {
1962 /* Everything must go for SEC. */
1963 *pp = p->next;
1964 break;
1965 }
1966 }
1967
1968 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1969 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1970 switch (r_type)
1971 {
1972 case R_SPARC_TLS_LDM_HI22:
1973 case R_SPARC_TLS_LDM_LO10:
1974 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1975 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1976 break;
1977
1978 case R_SPARC_TLS_GD_HI22:
1979 case R_SPARC_TLS_GD_LO10:
1980 case R_SPARC_TLS_IE_HI22:
1981 case R_SPARC_TLS_IE_LO10:
1982 case R_SPARC_GOT10:
1983 case R_SPARC_GOT13:
1984 case R_SPARC_GOT22:
1985 case R_SPARC_GOTDATA_HIX22:
1986 case R_SPARC_GOTDATA_LOX10:
1987 case R_SPARC_GOTDATA_OP_HIX22:
1988 case R_SPARC_GOTDATA_OP_LOX10:
1989 if (h != NULL)
1990 {
1991 if (h->got.refcount > 0)
1992 h->got.refcount--;
1993 }
1994 else
1995 {
1996 switch (r_type)
1997 {
1998 case R_SPARC_GOTDATA_OP_HIX22:
1999 case R_SPARC_GOTDATA_OP_LOX10:
2000 break;
2001
2002 default:
2003 if (local_got_refcounts[r_symndx] > 0)
2004 local_got_refcounts[r_symndx]--;
2005 break;
2006 }
2007 }
2008 break;
2009
2010 case R_SPARC_PC10:
2011 case R_SPARC_PC22:
2012 case R_SPARC_PC_HH22:
2013 case R_SPARC_PC_HM10:
2014 case R_SPARC_PC_LM22:
2015 if (h != NULL
2016 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2017 break;
2018 /* Fall through. */
2019
2020 case R_SPARC_DISP8:
2021 case R_SPARC_DISP16:
2022 case R_SPARC_DISP32:
2023 case R_SPARC_DISP64:
2024 case R_SPARC_WDISP30:
2025 case R_SPARC_WDISP22:
2026 case R_SPARC_WDISP19:
2027 case R_SPARC_WDISP16:
2028 case R_SPARC_WDISP10:
2029 case R_SPARC_8:
2030 case R_SPARC_16:
2031 case R_SPARC_32:
2032 case R_SPARC_HI22:
2033 case R_SPARC_22:
2034 case R_SPARC_13:
2035 case R_SPARC_LO10:
2036 case R_SPARC_UA16:
2037 case R_SPARC_UA32:
2038 case R_SPARC_PLT32:
2039 case R_SPARC_10:
2040 case R_SPARC_11:
2041 case R_SPARC_64:
2042 case R_SPARC_OLO10:
2043 case R_SPARC_HH22:
2044 case R_SPARC_HM10:
2045 case R_SPARC_LM22:
2046 case R_SPARC_7:
2047 case R_SPARC_5:
2048 case R_SPARC_6:
2049 case R_SPARC_HIX22:
2050 case R_SPARC_LOX10:
2051 case R_SPARC_H44:
2052 case R_SPARC_M44:
2053 case R_SPARC_L44:
2054 case R_SPARC_H34:
2055 case R_SPARC_UA64:
2056 if (bfd_link_pic (info))
2057 break;
2058 /* Fall through. */
2059
2060 case R_SPARC_WPLT30:
2061 if (h != NULL)
2062 {
2063 if (h->plt.refcount > 0)
2064 h->plt.refcount--;
2065 }
2066 break;
2067
2068 default:
2069 break;
2070 }
2071 }
2072
2073 return TRUE;
2074 }
2075
2076 /* Adjust a symbol defined by a dynamic object and referenced by a
2077 regular object. The current definition is in some section of the
2078 dynamic object, but we're not including those sections. We have to
2079 change the definition to something the rest of the link can
2080 understand. */
2081
2082 bfd_boolean
2083 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2084 struct elf_link_hash_entry *h)
2085 {
2086 struct _bfd_sparc_elf_link_hash_table *htab;
2087 struct _bfd_sparc_elf_link_hash_entry * eh;
2088 struct _bfd_sparc_elf_dyn_relocs *p;
2089 asection *s, *srel;
2090
2091 htab = _bfd_sparc_elf_hash_table (info);
2092 BFD_ASSERT (htab != NULL);
2093
2094 /* Make sure we know what is going on here. */
2095 BFD_ASSERT (htab->elf.dynobj != NULL
2096 && (h->needs_plt
2097 || h->type == STT_GNU_IFUNC
2098 || h->u.weakdef != NULL
2099 || (h->def_dynamic
2100 && h->ref_regular
2101 && !h->def_regular)));
2102
2103 /* If this is a function, put it in the procedure linkage table. We
2104 will fill in the contents of the procedure linkage table later
2105 (although we could actually do it here). The STT_NOTYPE
2106 condition is a hack specifically for the Oracle libraries
2107 delivered for Solaris; for some inexplicable reason, they define
2108 some of their functions as STT_NOTYPE when they really should be
2109 STT_FUNC. */
2110 if (h->type == STT_FUNC
2111 || h->type == STT_GNU_IFUNC
2112 || h->needs_plt
2113 || (h->type == STT_NOTYPE
2114 && (h->root.type == bfd_link_hash_defined
2115 || h->root.type == bfd_link_hash_defweak)
2116 && (h->root.u.def.section->flags & SEC_CODE) != 0))
2117 {
2118 if (h->plt.refcount <= 0
2119 || (h->type != STT_GNU_IFUNC
2120 && (SYMBOL_CALLS_LOCAL (info, h)
2121 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2122 && h->root.type == bfd_link_hash_undefweak))))
2123 {
2124 /* This case can occur if we saw a WPLT30 reloc in an input
2125 file, but the symbol was never referred to by a dynamic
2126 object, or if all references were garbage collected. In
2127 such a case, we don't actually need to build a procedure
2128 linkage table, and we can just do a WDISP30 reloc instead. */
2129 h->plt.offset = (bfd_vma) -1;
2130 h->needs_plt = 0;
2131 }
2132
2133 return TRUE;
2134 }
2135 else
2136 h->plt.offset = (bfd_vma) -1;
2137
2138 /* If this is a weak symbol, and there is a real definition, the
2139 processor independent code will have arranged for us to see the
2140 real definition first, and we can just use the same value. */
2141 if (h->u.weakdef != NULL)
2142 {
2143 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2144 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2145 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2146 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2147 return TRUE;
2148 }
2149
2150 /* This is a reference to a symbol defined by a dynamic object which
2151 is not a function. */
2152
2153 /* If we are creating a shared library, we must presume that the
2154 only references to the symbol are via the global offset table.
2155 For such cases we need not do anything here; the relocations will
2156 be handled correctly by relocate_section. */
2157 if (bfd_link_pic (info))
2158 return TRUE;
2159
2160 /* If there are no references to this symbol that do not use the
2161 GOT, we don't need to generate a copy reloc. */
2162 if (!h->non_got_ref)
2163 return TRUE;
2164
2165 /* If -z nocopyreloc was given, we won't generate them either. */
2166 if (info->nocopyreloc)
2167 {
2168 h->non_got_ref = 0;
2169 return TRUE;
2170 }
2171
2172 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2173 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2174 {
2175 s = p->sec->output_section;
2176 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2177 break;
2178 }
2179
2180 /* If we didn't find any dynamic relocs in read-only sections, then
2181 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2182 if (p == NULL)
2183 {
2184 h->non_got_ref = 0;
2185 return TRUE;
2186 }
2187
2188 /* We must allocate the symbol in our .dynbss section, which will
2189 become part of the .bss section of the executable. There will be
2190 an entry for this symbol in the .dynsym section. The dynamic
2191 object will contain position independent code, so all references
2192 from the dynamic object to this symbol will go through the global
2193 offset table. The dynamic linker will use the .dynsym entry to
2194 determine the address it must put in the global offset table, so
2195 both the dynamic object and the regular object will refer to the
2196 same memory location for the variable. */
2197
2198 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2199 to copy the initial value out of the dynamic object and into the
2200 runtime process image. We need to remember the offset into the
2201 .rel.bss section we are going to use. */
2202 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2203 {
2204 s = htab->elf.sdynrelro;
2205 srel = htab->elf.sreldynrelro;
2206 }
2207 else
2208 {
2209 s = htab->elf.sdynbss;
2210 srel = htab->elf.srelbss;
2211 }
2212 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2213 {
2214 srel->size += SPARC_ELF_RELA_BYTES (htab);
2215 h->needs_copy = 1;
2216 }
2217
2218 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2219 }
2220
2221 /* Allocate space in .plt, .got and associated reloc sections for
2222 dynamic relocs. */
2223
2224 static bfd_boolean
2225 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2226 {
2227 struct bfd_link_info *info;
2228 struct _bfd_sparc_elf_link_hash_table *htab;
2229 struct _bfd_sparc_elf_link_hash_entry *eh;
2230 struct _bfd_sparc_elf_dyn_relocs *p;
2231
2232 if (h->root.type == bfd_link_hash_indirect)
2233 return TRUE;
2234
2235 info = (struct bfd_link_info *) inf;
2236 htab = _bfd_sparc_elf_hash_table (info);
2237 BFD_ASSERT (htab != NULL);
2238
2239 if ((htab->elf.dynamic_sections_created
2240 && h->plt.refcount > 0)
2241 || (h->type == STT_GNU_IFUNC
2242 && h->def_regular
2243 && h->ref_regular))
2244 {
2245 /* Make sure this symbol is output as a dynamic symbol.
2246 Undefined weak syms won't yet be marked as dynamic. */
2247 if (h->dynindx == -1
2248 && !h->forced_local)
2249 {
2250 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2251 return FALSE;
2252 }
2253
2254 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
2255 || (h->type == STT_GNU_IFUNC
2256 && h->def_regular))
2257 {
2258 asection *s = htab->elf.splt;
2259
2260 if (s == NULL)
2261 s = htab->elf.iplt;
2262
2263 /* Allocate room for the header. */
2264 if (s->size == 0)
2265 {
2266 s->size = htab->plt_header_size;
2267
2268 /* Allocate space for the .rela.plt.unloaded relocations. */
2269 if (htab->is_vxworks && !bfd_link_pic (info))
2270 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2271 }
2272
2273 /* The procedure linkage table size is bounded by the magnitude
2274 of the offset we can describe in the entry. */
2275 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2276 (((bfd_vma)1 << 31) << 1) : 0x400000))
2277 {
2278 bfd_set_error (bfd_error_bad_value);
2279 return FALSE;
2280 }
2281
2282 if (SPARC_ELF_WORD_BYTES(htab) == 8
2283 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2284 {
2285 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2286
2287
2288 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2289
2290 h->plt.offset = (s->size - (off * 8));
2291 }
2292 else
2293 h->plt.offset = s->size;
2294
2295 /* If this symbol is not defined in a regular file, and we are
2296 not generating a shared library, then set the symbol to this
2297 location in the .plt. This is required to make function
2298 pointers compare as equal between the normal executable and
2299 the shared library. */
2300 if (! bfd_link_pic (info)
2301 && !h->def_regular)
2302 {
2303 h->root.u.def.section = s;
2304 h->root.u.def.value = h->plt.offset;
2305 }
2306
2307 /* Make room for this entry. */
2308 s->size += htab->plt_entry_size;
2309
2310 /* We also need to make an entry in the .rela.plt section. */
2311 if (s == htab->elf.splt)
2312 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2313 else
2314 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2315
2316 if (htab->is_vxworks)
2317 {
2318 /* Allocate space for the .got.plt entry. */
2319 htab->elf.sgotplt->size += 4;
2320
2321 /* ...and for the .rela.plt.unloaded relocations. */
2322 if (!bfd_link_pic (info))
2323 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2324 }
2325 }
2326 else
2327 {
2328 h->plt.offset = (bfd_vma) -1;
2329 h->needs_plt = 0;
2330 }
2331 }
2332 else
2333 {
2334 h->plt.offset = (bfd_vma) -1;
2335 h->needs_plt = 0;
2336 }
2337
2338 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2339 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2340 if (h->got.refcount > 0
2341 && !bfd_link_pic (info)
2342 && h->dynindx == -1
2343 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2344 h->got.offset = (bfd_vma) -1;
2345 else if (h->got.refcount > 0)
2346 {
2347 asection *s;
2348 bfd_boolean dyn;
2349 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2350
2351 /* Make sure this symbol is output as a dynamic symbol.
2352 Undefined weak syms won't yet be marked as dynamic. */
2353 if (h->dynindx == -1
2354 && !h->forced_local)
2355 {
2356 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2357 return FALSE;
2358 }
2359
2360 s = htab->elf.sgot;
2361 h->got.offset = s->size;
2362 s->size += SPARC_ELF_WORD_BYTES (htab);
2363 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2364 if (tls_type == GOT_TLS_GD)
2365 s->size += SPARC_ELF_WORD_BYTES (htab);
2366 dyn = htab->elf.dynamic_sections_created;
2367 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2368 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2369 global. */
2370 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2371 || tls_type == GOT_TLS_IE
2372 || h->type == STT_GNU_IFUNC)
2373 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2374 else if (tls_type == GOT_TLS_GD)
2375 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2376 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2377 bfd_link_pic (info),
2378 h))
2379 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2380 }
2381 else
2382 h->got.offset = (bfd_vma) -1;
2383
2384 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2385 if (eh->dyn_relocs == NULL)
2386 return TRUE;
2387
2388 /* In the shared -Bsymbolic case, discard space allocated for
2389 dynamic pc-relative relocs against symbols which turn out to be
2390 defined in regular objects. For the normal shared case, discard
2391 space for pc-relative relocs that have become local due to symbol
2392 visibility changes. */
2393
2394 if (bfd_link_pic (info))
2395 {
2396 if (SYMBOL_CALLS_LOCAL (info, h))
2397 {
2398 struct _bfd_sparc_elf_dyn_relocs **pp;
2399
2400 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2401 {
2402 p->count -= p->pc_count;
2403 p->pc_count = 0;
2404 if (p->count == 0)
2405 *pp = p->next;
2406 else
2407 pp = &p->next;
2408 }
2409 }
2410
2411 if (htab->is_vxworks)
2412 {
2413 struct _bfd_sparc_elf_dyn_relocs **pp;
2414
2415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2416 {
2417 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2418 *pp = p->next;
2419 else
2420 pp = &p->next;
2421 }
2422 }
2423
2424 /* Also discard relocs on undefined weak syms with non-default
2425 visibility. */
2426 if (eh->dyn_relocs != NULL
2427 && h->root.type == bfd_link_hash_undefweak)
2428 {
2429 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2430 eh->dyn_relocs = NULL;
2431
2432 /* Make sure undefined weak symbols are output as a dynamic
2433 symbol in PIEs. */
2434 else if (h->dynindx == -1
2435 && !h->forced_local)
2436 {
2437 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2438 return FALSE;
2439 }
2440 }
2441 }
2442 else
2443 {
2444 /* For the non-shared case, discard space for relocs against
2445 symbols which turn out to need copy relocs or are not
2446 dynamic. */
2447
2448 if (!h->non_got_ref
2449 && ((h->def_dynamic
2450 && !h->def_regular)
2451 || (htab->elf.dynamic_sections_created
2452 && (h->root.type == bfd_link_hash_undefweak
2453 || h->root.type == bfd_link_hash_undefined))))
2454 {
2455 /* Make sure this symbol is output as a dynamic symbol.
2456 Undefined weak syms won't yet be marked as dynamic. */
2457 if (h->dynindx == -1
2458 && !h->forced_local)
2459 {
2460 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2461 return FALSE;
2462 }
2463
2464 /* If that succeeded, we know we'll be keeping all the
2465 relocs. */
2466 if (h->dynindx != -1)
2467 goto keep;
2468 }
2469
2470 eh->dyn_relocs = NULL;
2471
2472 keep: ;
2473 }
2474
2475 /* Finally, allocate space. */
2476 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2477 {
2478 asection *sreloc = elf_section_data (p->sec)->sreloc;
2479 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2480 }
2481
2482 return TRUE;
2483 }
2484
2485 /* Allocate space in .plt, .got and associated reloc sections for
2486 local dynamic relocs. */
2487
2488 static bfd_boolean
2489 allocate_local_dynrelocs (void **slot, void *inf)
2490 {
2491 struct elf_link_hash_entry *h
2492 = (struct elf_link_hash_entry *) *slot;
2493
2494 if (h->type != STT_GNU_IFUNC
2495 || !h->def_regular
2496 || !h->ref_regular
2497 || !h->forced_local
2498 || h->root.type != bfd_link_hash_defined)
2499 abort ();
2500
2501 return allocate_dynrelocs (h, inf);
2502 }
2503
2504 /* Find any dynamic relocs that apply to read-only sections. */
2505
2506 static bfd_boolean
2507 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2508 {
2509 struct _bfd_sparc_elf_link_hash_entry *eh;
2510 struct _bfd_sparc_elf_dyn_relocs *p;
2511
2512 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2513 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2514 {
2515 asection *s = p->sec->output_section;
2516
2517 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2518 {
2519 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2520
2521 info->flags |= DF_TEXTREL;
2522
2523 /* Not an error, just cut short the traversal. */
2524 return FALSE;
2525 }
2526 }
2527 return TRUE;
2528 }
2529
2530 /* Return true if the dynamic symbol for a given section should be
2531 omitted when creating a shared library. */
2532
2533 bfd_boolean
2534 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2535 struct bfd_link_info *info,
2536 asection *p)
2537 {
2538 /* We keep the .got section symbol so that explicit relocations
2539 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2540 can be turned into relocations against the .got symbol. */
2541 if (strcmp (p->name, ".got") == 0)
2542 return FALSE;
2543
2544 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2545 }
2546
2547 /* Set the sizes of the dynamic sections. */
2548
2549 bfd_boolean
2550 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2551 struct bfd_link_info *info)
2552 {
2553 struct _bfd_sparc_elf_link_hash_table *htab;
2554 bfd *dynobj;
2555 asection *s;
2556 bfd *ibfd;
2557
2558 htab = _bfd_sparc_elf_hash_table (info);
2559 BFD_ASSERT (htab != NULL);
2560 dynobj = htab->elf.dynobj;
2561 BFD_ASSERT (dynobj != NULL);
2562
2563 if (elf_hash_table (info)->dynamic_sections_created)
2564 {
2565 /* Set the contents of the .interp section to the interpreter. */
2566 if (bfd_link_executable (info) && !info->nointerp)
2567 {
2568 s = bfd_get_linker_section (dynobj, ".interp");
2569 BFD_ASSERT (s != NULL);
2570 s->size = htab->dynamic_interpreter_size;
2571 s->contents = (unsigned char *) htab->dynamic_interpreter;
2572 }
2573 }
2574
2575 /* Set up .got offsets for local syms, and space for local dynamic
2576 relocs. */
2577 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2578 {
2579 bfd_signed_vma *local_got;
2580 bfd_signed_vma *end_local_got;
2581 char *local_tls_type;
2582 bfd_size_type locsymcount;
2583 Elf_Internal_Shdr *symtab_hdr;
2584 asection *srel;
2585
2586 if (! is_sparc_elf (ibfd))
2587 continue;
2588
2589 for (s = ibfd->sections; s != NULL; s = s->next)
2590 {
2591 struct _bfd_sparc_elf_dyn_relocs *p;
2592
2593 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2594 {
2595 if (!bfd_is_abs_section (p->sec)
2596 && bfd_is_abs_section (p->sec->output_section))
2597 {
2598 /* Input section has been discarded, either because
2599 it is a copy of a linkonce section or due to
2600 linker script /DISCARD/, so we'll be discarding
2601 the relocs too. */
2602 }
2603 else if (htab->is_vxworks
2604 && strcmp (p->sec->output_section->name,
2605 ".tls_vars") == 0)
2606 {
2607 /* Relocations in vxworks .tls_vars sections are
2608 handled specially by the loader. */
2609 }
2610 else if (p->count != 0)
2611 {
2612 srel = elf_section_data (p->sec)->sreloc;
2613 if (!htab->elf.dynamic_sections_created)
2614 srel = htab->elf.irelplt;
2615 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2616 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2617 info->flags |= DF_TEXTREL;
2618 }
2619 }
2620 }
2621
2622 local_got = elf_local_got_refcounts (ibfd);
2623 if (!local_got)
2624 continue;
2625
2626 symtab_hdr = &elf_symtab_hdr (ibfd);
2627 locsymcount = symtab_hdr->sh_info;
2628 end_local_got = local_got + locsymcount;
2629 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2630 s = htab->elf.sgot;
2631 srel = htab->elf.srelgot;
2632 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2633 {
2634 if (*local_got > 0)
2635 {
2636 *local_got = s->size;
2637 s->size += SPARC_ELF_WORD_BYTES (htab);
2638 if (*local_tls_type == GOT_TLS_GD)
2639 s->size += SPARC_ELF_WORD_BYTES (htab);
2640 if (bfd_link_pic (info)
2641 || *local_tls_type == GOT_TLS_GD
2642 || *local_tls_type == GOT_TLS_IE)
2643 srel->size += SPARC_ELF_RELA_BYTES (htab);
2644 }
2645 else
2646 *local_got = (bfd_vma) -1;
2647 }
2648 }
2649
2650 if (htab->tls_ldm_got.refcount > 0)
2651 {
2652 /* Allocate 2 got entries and 1 dynamic reloc for
2653 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2654 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2655 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2656 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2657 }
2658 else
2659 htab->tls_ldm_got.offset = -1;
2660
2661 /* Allocate global sym .plt and .got entries, and space for global
2662 sym dynamic relocs. */
2663 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2664
2665 /* Allocate .plt and .got entries, and space for local symbols. */
2666 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2667
2668 if (! ABI_64_P (output_bfd)
2669 && !htab->is_vxworks
2670 && elf_hash_table (info)->dynamic_sections_created)
2671 {
2672 /* Make space for the trailing nop in .plt. */
2673 if (htab->elf.splt->size > 0)
2674 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2675
2676 /* If the .got section is more than 0x1000 bytes, we add
2677 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2678 bit relocations have a greater chance of working.
2679
2680 FIXME: Make this optimization work for 64-bit too. */
2681 if (htab->elf.sgot->size >= 0x1000
2682 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2683 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2684 }
2685
2686 /* The check_relocs and adjust_dynamic_symbol entry points have
2687 determined the sizes of the various dynamic sections. Allocate
2688 memory for them. */
2689 for (s = dynobj->sections; s != NULL; s = s->next)
2690 {
2691 if ((s->flags & SEC_LINKER_CREATED) == 0)
2692 continue;
2693
2694 if (s == htab->elf.splt
2695 || s == htab->elf.sgot
2696 || s == htab->elf.sdynbss
2697 || s == htab->elf.sdynrelro
2698 || s == htab->elf.iplt
2699 || s == htab->elf.sgotplt)
2700 {
2701 /* Strip this section if we don't need it; see the
2702 comment below. */
2703 }
2704 else if (CONST_STRNEQ (s->name, ".rela"))
2705 {
2706 if (s->size != 0)
2707 {
2708 /* We use the reloc_count field as a counter if we need
2709 to copy relocs into the output file. */
2710 s->reloc_count = 0;
2711 }
2712 }
2713 else
2714 {
2715 /* It's not one of our sections. */
2716 continue;
2717 }
2718
2719 if (s->size == 0)
2720 {
2721 /* If we don't need this section, strip it from the
2722 output file. This is mostly to handle .rela.bss and
2723 .rela.plt. We must create both sections in
2724 create_dynamic_sections, because they must be created
2725 before the linker maps input sections to output
2726 sections. The linker does that before
2727 adjust_dynamic_symbol is called, and it is that
2728 function which decides whether anything needs to go
2729 into these sections. */
2730 s->flags |= SEC_EXCLUDE;
2731 continue;
2732 }
2733
2734 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2735 continue;
2736
2737 /* Allocate memory for the section contents. Zero the memory
2738 for the benefit of .rela.plt, which has 4 unused entries
2739 at the beginning, and we don't want garbage. */
2740 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2741 if (s->contents == NULL)
2742 return FALSE;
2743 }
2744
2745 if (elf_hash_table (info)->dynamic_sections_created)
2746 {
2747 /* Add some entries to the .dynamic section. We fill in the
2748 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2749 must add the entries now so that we get the correct size for
2750 the .dynamic section. The DT_DEBUG entry is filled in by the
2751 dynamic linker and used by the debugger. */
2752 #define add_dynamic_entry(TAG, VAL) \
2753 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2754
2755 if (bfd_link_executable (info))
2756 {
2757 if (!add_dynamic_entry (DT_DEBUG, 0))
2758 return FALSE;
2759 }
2760
2761 if (htab->elf.srelplt->size != 0)
2762 {
2763 if (!add_dynamic_entry (DT_PLTGOT, 0)
2764 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2765 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2766 || !add_dynamic_entry (DT_JMPREL, 0))
2767 return FALSE;
2768 }
2769
2770 if (!add_dynamic_entry (DT_RELA, 0)
2771 || !add_dynamic_entry (DT_RELASZ, 0)
2772 || !add_dynamic_entry (DT_RELAENT,
2773 SPARC_ELF_RELA_BYTES (htab)))
2774 return FALSE;
2775
2776 /* If any dynamic relocs apply to a read-only section,
2777 then we need a DT_TEXTREL entry. */
2778 if ((info->flags & DF_TEXTREL) == 0)
2779 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2780
2781 if (info->flags & DF_TEXTREL)
2782 {
2783 if (!add_dynamic_entry (DT_TEXTREL, 0))
2784 return FALSE;
2785 }
2786
2787 if (ABI_64_P (output_bfd))
2788 {
2789 int reg;
2790 struct _bfd_sparc_elf_app_reg * app_regs;
2791 struct elf_strtab_hash *dynstr;
2792 struct elf_link_hash_table *eht = elf_hash_table (info);
2793
2794 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2795 entries if needed. */
2796 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2797 dynstr = eht->dynstr;
2798
2799 for (reg = 0; reg < 4; reg++)
2800 if (app_regs [reg].name != NULL)
2801 {
2802 struct elf_link_local_dynamic_entry *entry, *e;
2803
2804 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2805 return FALSE;
2806
2807 entry = (struct elf_link_local_dynamic_entry *)
2808 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2809 if (entry == NULL)
2810 return FALSE;
2811
2812 /* We cheat here a little bit: the symbol will not be local, so we
2813 put it at the end of the dynlocal linked list. We will fix it
2814 later on, as we have to fix other fields anyway. */
2815 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2816 entry->isym.st_size = 0;
2817 if (*app_regs [reg].name != '\0')
2818 entry->isym.st_name
2819 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2820 else
2821 entry->isym.st_name = 0;
2822 entry->isym.st_other = 0;
2823 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2824 STT_REGISTER);
2825 entry->isym.st_shndx = app_regs [reg].shndx;
2826 entry->isym.st_target_internal = 0;
2827 entry->next = NULL;
2828 entry->input_bfd = output_bfd;
2829 entry->input_indx = -1;
2830
2831 if (eht->dynlocal == NULL)
2832 eht->dynlocal = entry;
2833 else
2834 {
2835 for (e = eht->dynlocal; e->next; e = e->next)
2836 ;
2837 e->next = entry;
2838 }
2839 eht->dynsymcount++;
2840 }
2841 }
2842 if (htab->is_vxworks
2843 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2844 return FALSE;
2845 }
2846 #undef add_dynamic_entry
2847
2848 return TRUE;
2849 }
2850 \f
2851 bfd_boolean
2852 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2853 {
2854 if (!sec->used_by_bfd)
2855 {
2856 struct _bfd_sparc_elf_section_data *sdata;
2857 bfd_size_type amt = sizeof (*sdata);
2858
2859 sdata = bfd_zalloc (abfd, amt);
2860 if (sdata == NULL)
2861 return FALSE;
2862 sec->used_by_bfd = sdata;
2863 }
2864
2865 return _bfd_elf_new_section_hook (abfd, sec);
2866 }
2867
2868 bfd_boolean
2869 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2870 struct bfd_section *section,
2871 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2872 bfd_boolean *again)
2873 {
2874 if (bfd_link_relocatable (link_info))
2875 (*link_info->callbacks->einfo)
2876 (_("%P%F: --relax and -r may not be used together\n"));
2877
2878 *again = FALSE;
2879 sec_do_relax (section) = 1;
2880 return TRUE;
2881 }
2882 \f
2883 /* Return the base VMA address which should be subtracted from real addresses
2884 when resolving @dtpoff relocation.
2885 This is PT_TLS segment p_vaddr. */
2886
2887 static bfd_vma
2888 dtpoff_base (struct bfd_link_info *info)
2889 {
2890 /* If tls_sec is NULL, we should have signalled an error already. */
2891 if (elf_hash_table (info)->tls_sec == NULL)
2892 return 0;
2893 return elf_hash_table (info)->tls_sec->vma;
2894 }
2895
2896 /* Return the relocation value for @tpoff relocation
2897 if STT_TLS virtual address is ADDRESS. */
2898
2899 static bfd_vma
2900 tpoff (struct bfd_link_info *info, bfd_vma address)
2901 {
2902 struct elf_link_hash_table *htab = elf_hash_table (info);
2903 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2904 bfd_vma static_tls_size;
2905
2906 /* If tls_sec is NULL, we should have signalled an error already. */
2907 if (htab->tls_sec == NULL)
2908 return 0;
2909
2910 /* Consider special static TLS alignment requirements. */
2911 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2912 return address - static_tls_size - htab->tls_sec->vma;
2913 }
2914
2915 /* Return the relocation value for a %gdop relocation. */
2916
2917 static bfd_vma
2918 gdopoff (struct bfd_link_info *info, bfd_vma address)
2919 {
2920 struct elf_link_hash_table *htab = elf_hash_table (info);
2921 bfd_vma got_base;
2922
2923 got_base = (htab->hgot->root.u.def.value
2924 + htab->hgot->root.u.def.section->output_offset
2925 + htab->hgot->root.u.def.section->output_section->vma);
2926
2927 return address - got_base;
2928 }
2929
2930 /* Relocate a SPARC ELF section. */
2931
2932 bfd_boolean
2933 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2934 struct bfd_link_info *info,
2935 bfd *input_bfd,
2936 asection *input_section,
2937 bfd_byte *contents,
2938 Elf_Internal_Rela *relocs,
2939 Elf_Internal_Sym *local_syms,
2940 asection **local_sections)
2941 {
2942 struct _bfd_sparc_elf_link_hash_table *htab;
2943 Elf_Internal_Shdr *symtab_hdr;
2944 struct elf_link_hash_entry **sym_hashes;
2945 bfd_vma *local_got_offsets;
2946 bfd_vma got_base;
2947 asection *sreloc;
2948 Elf_Internal_Rela *rel;
2949 Elf_Internal_Rela *relend;
2950 int num_relocs;
2951 bfd_boolean is_vxworks_tls;
2952
2953 htab = _bfd_sparc_elf_hash_table (info);
2954 BFD_ASSERT (htab != NULL);
2955 symtab_hdr = &elf_symtab_hdr (input_bfd);
2956 sym_hashes = elf_sym_hashes (input_bfd);
2957 local_got_offsets = elf_local_got_offsets (input_bfd);
2958
2959 if (elf_hash_table (info)->hgot == NULL)
2960 got_base = 0;
2961 else
2962 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2963
2964 sreloc = elf_section_data (input_section)->sreloc;
2965 /* We have to handle relocations in vxworks .tls_vars sections
2966 specially, because the dynamic loader is 'weird'. */
2967 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
2968 && !strcmp (input_section->output_section->name,
2969 ".tls_vars"));
2970
2971 rel = relocs;
2972 if (ABI_64_P (output_bfd))
2973 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2974 else
2975 num_relocs = input_section->reloc_count;
2976 relend = relocs + num_relocs;
2977 for (; rel < relend; rel++)
2978 {
2979 int r_type, tls_type;
2980 reloc_howto_type *howto;
2981 unsigned long r_symndx;
2982 struct elf_link_hash_entry *h;
2983 Elf_Internal_Sym *sym;
2984 asection *sec;
2985 bfd_vma relocation, off;
2986 bfd_reloc_status_type r;
2987 bfd_boolean is_plt = FALSE;
2988 bfd_boolean unresolved_reloc;
2989
2990 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2991 if (r_type == R_SPARC_GNU_VTINHERIT
2992 || r_type == R_SPARC_GNU_VTENTRY)
2993 continue;
2994
2995 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2996 {
2997 bfd_set_error (bfd_error_bad_value);
2998 return FALSE;
2999 }
3000 howto = _bfd_sparc_elf_howto_table + r_type;
3001
3002 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
3003 h = NULL;
3004 sym = NULL;
3005 sec = NULL;
3006 unresolved_reloc = FALSE;
3007 if (r_symndx < symtab_hdr->sh_info)
3008 {
3009 sym = local_syms + r_symndx;
3010 sec = local_sections[r_symndx];
3011 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3012
3013 if (!bfd_link_relocatable (info)
3014 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3015 {
3016 /* Relocate against local STT_GNU_IFUNC symbol. */
3017 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3018 rel, FALSE);
3019 if (h == NULL)
3020 abort ();
3021
3022 /* Set STT_GNU_IFUNC symbol value. */
3023 h->root.u.def.value = sym->st_value;
3024 h->root.u.def.section = sec;
3025 }
3026 }
3027 else
3028 {
3029 bfd_boolean warned, ignored;
3030
3031 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3032 r_symndx, symtab_hdr, sym_hashes,
3033 h, sec, relocation,
3034 unresolved_reloc, warned, ignored);
3035 if (warned)
3036 {
3037 /* To avoid generating warning messages about truncated
3038 relocations, set the relocation's address to be the same as
3039 the start of this section. */
3040 if (input_section->output_section != NULL)
3041 relocation = input_section->output_section->vma;
3042 else
3043 relocation = 0;
3044 }
3045 }
3046
3047 if (sec != NULL && discarded_section (sec))
3048 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3049 rel, 1, relend, howto, 0, contents);
3050
3051 if (bfd_link_relocatable (info))
3052 continue;
3053
3054 if (h != NULL
3055 && h->type == STT_GNU_IFUNC
3056 && h->def_regular)
3057 {
3058 asection *plt_sec;
3059 const char *name;
3060
3061 if ((input_section->flags & SEC_ALLOC) == 0
3062 || h->plt.offset == (bfd_vma) -1)
3063 abort ();
3064
3065 plt_sec = htab->elf.splt;
3066 if (! plt_sec)
3067 plt_sec =htab->elf.iplt;
3068
3069 switch (r_type)
3070 {
3071 case R_SPARC_GOTDATA_OP:
3072 continue;
3073
3074 case R_SPARC_GOTDATA_OP_HIX22:
3075 case R_SPARC_GOTDATA_OP_LOX10:
3076 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3077 ? R_SPARC_GOT22
3078 : R_SPARC_GOT10);
3079 howto = _bfd_sparc_elf_howto_table + r_type;
3080 /* Fall through. */
3081
3082 case R_SPARC_GOT10:
3083 case R_SPARC_GOT13:
3084 case R_SPARC_GOT22:
3085 if (htab->elf.sgot == NULL)
3086 abort ();
3087 off = h->got.offset;
3088 if (off == (bfd_vma) -1)
3089 abort();
3090 relocation = htab->elf.sgot->output_offset + off - got_base;
3091 goto do_relocation;
3092
3093 case R_SPARC_WPLT30:
3094 case R_SPARC_WDISP30:
3095 relocation = (plt_sec->output_section->vma
3096 + plt_sec->output_offset + h->plt.offset);
3097 goto do_relocation;
3098
3099 case R_SPARC_32:
3100 case R_SPARC_64:
3101 if (bfd_link_pic (info) && h->non_got_ref)
3102 {
3103 Elf_Internal_Rela outrel;
3104 bfd_vma offset;
3105
3106 offset = _bfd_elf_section_offset (output_bfd, info,
3107 input_section,
3108 rel->r_offset);
3109 if (offset == (bfd_vma) -1
3110 || offset == (bfd_vma) -2)
3111 abort();
3112
3113 outrel.r_offset = (input_section->output_section->vma
3114 + input_section->output_offset
3115 + offset);
3116
3117 if (h->dynindx == -1
3118 || h->forced_local
3119 || bfd_link_executable (info))
3120 {
3121 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3122 0, R_SPARC_IRELATIVE);
3123 outrel.r_addend = relocation + rel->r_addend;
3124 }
3125 else
3126 {
3127 if (h->dynindx == -1)
3128 abort();
3129 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3130 outrel.r_addend = rel->r_addend;
3131 }
3132
3133 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3134 continue;
3135 }
3136
3137 relocation = (plt_sec->output_section->vma
3138 + plt_sec->output_offset + h->plt.offset);
3139 goto do_relocation;
3140
3141 case R_SPARC_HI22:
3142 case R_SPARC_LO10:
3143 /* We should only see such relocs in static links. */
3144 if (bfd_link_pic (info))
3145 abort();
3146 relocation = (plt_sec->output_section->vma
3147 + plt_sec->output_offset + h->plt.offset);
3148 goto do_relocation;
3149
3150 default:
3151 if (h->root.root.string)
3152 name = h->root.root.string;
3153 else
3154 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3155 NULL);
3156 _bfd_error_handler
3157 /* xgettext:c-format */
3158 (_("%B: relocation %s against STT_GNU_IFUNC "
3159 "symbol `%s' isn't handled by %s"), input_bfd,
3160 _bfd_sparc_elf_howto_table[r_type].name,
3161 name, __FUNCTION__);
3162 bfd_set_error (bfd_error_bad_value);
3163 return FALSE;
3164 }
3165 }
3166
3167 switch (r_type)
3168 {
3169 case R_SPARC_GOTDATA_OP_HIX22:
3170 case R_SPARC_GOTDATA_OP_LOX10:
3171 if (SYMBOL_REFERENCES_LOCAL (info, h))
3172 {
3173 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3174 ? R_SPARC_GOTDATA_HIX22
3175 : R_SPARC_GOTDATA_LOX10);
3176 howto = _bfd_sparc_elf_howto_table + r_type;
3177 }
3178 break;
3179
3180 case R_SPARC_GOTDATA_OP:
3181 if (SYMBOL_REFERENCES_LOCAL (info, h))
3182 {
3183 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3184
3185 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3186 relocation = 0x80000000 | (insn & 0x3e07c01f);
3187 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3188 }
3189 continue;
3190 }
3191
3192 switch (r_type)
3193 {
3194 case R_SPARC_GOTDATA_HIX22:
3195 case R_SPARC_GOTDATA_LOX10:
3196 relocation = gdopoff (info, relocation);
3197 break;
3198
3199 case R_SPARC_GOTDATA_OP_HIX22:
3200 case R_SPARC_GOTDATA_OP_LOX10:
3201 case R_SPARC_GOT10:
3202 case R_SPARC_GOT13:
3203 case R_SPARC_GOT22:
3204 /* Relocation is to the entry for this symbol in the global
3205 offset table. */
3206 if (htab->elf.sgot == NULL)
3207 abort ();
3208
3209 if (h != NULL)
3210 {
3211 bfd_boolean dyn;
3212
3213 off = h->got.offset;
3214 BFD_ASSERT (off != (bfd_vma) -1);
3215 dyn = elf_hash_table (info)->dynamic_sections_created;
3216
3217 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3218 bfd_link_pic (info),
3219 h)
3220 || (bfd_link_pic (info)
3221 && SYMBOL_REFERENCES_LOCAL (info, h)))
3222 {
3223 /* This is actually a static link, or it is a
3224 -Bsymbolic link and the symbol is defined
3225 locally, or the symbol was forced to be local
3226 because of a version file. We must initialize
3227 this entry in the global offset table. Since the
3228 offset must always be a multiple of 8 for 64-bit
3229 and 4 for 32-bit, we use the least significant bit
3230 to record whether we have initialized it already.
3231
3232 When doing a dynamic link, we create a .rela.got
3233 relocation entry to initialize the value. This
3234 is done in the finish_dynamic_symbol routine. */
3235 if ((off & 1) != 0)
3236 off &= ~1;
3237 else
3238 {
3239 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3240 htab->elf.sgot->contents + off);
3241 h->got.offset |= 1;
3242 }
3243 }
3244 else
3245 unresolved_reloc = FALSE;
3246 }
3247 else
3248 {
3249 BFD_ASSERT (local_got_offsets != NULL
3250 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3251
3252 off = local_got_offsets[r_symndx];
3253
3254 /* The offset must always be a multiple of 8 on 64-bit and
3255 4 on 32-bit. We use the least significant bit to record
3256 whether we have already processed this entry. */
3257 if ((off & 1) != 0)
3258 off &= ~1;
3259 else
3260 {
3261
3262 if (bfd_link_pic (info))
3263 {
3264 asection *s;
3265 Elf_Internal_Rela outrel;
3266
3267 /* We need to generate a R_SPARC_RELATIVE reloc
3268 for the dynamic linker. */
3269 s = htab->elf.srelgot;
3270 BFD_ASSERT (s != NULL);
3271
3272 outrel.r_offset = (htab->elf.sgot->output_section->vma
3273 + htab->elf.sgot->output_offset
3274 + off);
3275 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3276 0, R_SPARC_RELATIVE);
3277 outrel.r_addend = relocation;
3278 relocation = 0;
3279 sparc_elf_append_rela (output_bfd, s, &outrel);
3280 }
3281
3282 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3283 htab->elf.sgot->contents + off);
3284 local_got_offsets[r_symndx] |= 1;
3285 }
3286 }
3287 relocation = htab->elf.sgot->output_offset + off - got_base;
3288 break;
3289
3290 case R_SPARC_PLT32:
3291 case R_SPARC_PLT64:
3292 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3293 {
3294 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3295 goto r_sparc_plt32;
3296 }
3297 /* Fall through. */
3298
3299 case R_SPARC_WPLT30:
3300 case R_SPARC_HIPLT22:
3301 case R_SPARC_LOPLT10:
3302 case R_SPARC_PCPLT32:
3303 case R_SPARC_PCPLT22:
3304 case R_SPARC_PCPLT10:
3305 r_sparc_wplt30:
3306 /* Relocation is to the entry for this symbol in the
3307 procedure linkage table. */
3308
3309 if (! ABI_64_P (output_bfd))
3310 {
3311 /* The Solaris native assembler will generate a WPLT30 reloc
3312 for a local symbol if you assemble a call from one
3313 section to another when using -K pic. We treat it as
3314 WDISP30. */
3315 if (h == NULL)
3316 break;
3317 }
3318 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3319 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3320 break;
3321 else
3322 {
3323 BFD_ASSERT (h != NULL);
3324 }
3325
3326 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3327 {
3328 /* We didn't make a PLT entry for this symbol. This
3329 happens when statically linking PIC code, or when
3330 using -Bsymbolic. */
3331 break;
3332 }
3333
3334 relocation = (htab->elf.splt->output_section->vma
3335 + htab->elf.splt->output_offset
3336 + h->plt.offset);
3337 unresolved_reloc = FALSE;
3338 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3339 {
3340 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3341 is_plt = TRUE;
3342 goto r_sparc_plt32;
3343 }
3344 break;
3345
3346 case R_SPARC_PC10:
3347 case R_SPARC_PC22:
3348 case R_SPARC_PC_HH22:
3349 case R_SPARC_PC_HM10:
3350 case R_SPARC_PC_LM22:
3351 if (h != NULL
3352 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3353 break;
3354 /* Fall through. */
3355 case R_SPARC_DISP8:
3356 case R_SPARC_DISP16:
3357 case R_SPARC_DISP32:
3358 case R_SPARC_DISP64:
3359 case R_SPARC_WDISP30:
3360 case R_SPARC_WDISP22:
3361 case R_SPARC_WDISP19:
3362 case R_SPARC_WDISP16:
3363 case R_SPARC_WDISP10:
3364 case R_SPARC_8:
3365 case R_SPARC_16:
3366 case R_SPARC_32:
3367 case R_SPARC_HI22:
3368 case R_SPARC_22:
3369 case R_SPARC_13:
3370 case R_SPARC_LO10:
3371 case R_SPARC_UA16:
3372 case R_SPARC_UA32:
3373 case R_SPARC_10:
3374 case R_SPARC_11:
3375 case R_SPARC_64:
3376 case R_SPARC_OLO10:
3377 case R_SPARC_HH22:
3378 case R_SPARC_HM10:
3379 case R_SPARC_LM22:
3380 case R_SPARC_7:
3381 case R_SPARC_5:
3382 case R_SPARC_6:
3383 case R_SPARC_HIX22:
3384 case R_SPARC_LOX10:
3385 case R_SPARC_H44:
3386 case R_SPARC_M44:
3387 case R_SPARC_L44:
3388 case R_SPARC_H34:
3389 case R_SPARC_UA64:
3390 r_sparc_plt32:
3391 if ((input_section->flags & SEC_ALLOC) == 0
3392 || is_vxworks_tls)
3393 break;
3394
3395 if ((bfd_link_pic (info)
3396 && (h == NULL
3397 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3398 || h->root.type != bfd_link_hash_undefweak)
3399 && (! howto->pc_relative
3400 || !SYMBOL_CALLS_LOCAL (info, h)))
3401 || (!bfd_link_pic (info)
3402 && h != NULL
3403 && h->dynindx != -1
3404 && !h->non_got_ref
3405 && ((h->def_dynamic
3406 && !h->def_regular)
3407 || h->root.type == bfd_link_hash_undefweak
3408 || h->root.type == bfd_link_hash_undefined)))
3409 {
3410 Elf_Internal_Rela outrel;
3411 bfd_boolean skip, relocate = FALSE;
3412
3413 /* When generating a shared object, these relocations
3414 are copied into the output file to be resolved at run
3415 time. */
3416
3417 BFD_ASSERT (sreloc != NULL);
3418
3419 skip = FALSE;
3420
3421 outrel.r_offset =
3422 _bfd_elf_section_offset (output_bfd, info, input_section,
3423 rel->r_offset);
3424 if (outrel.r_offset == (bfd_vma) -1)
3425 skip = TRUE;
3426 else if (outrel.r_offset == (bfd_vma) -2)
3427 skip = TRUE, relocate = TRUE;
3428 outrel.r_offset += (input_section->output_section->vma
3429 + input_section->output_offset);
3430
3431 /* Optimize unaligned reloc usage now that we know where
3432 it finally resides. */
3433 switch (r_type)
3434 {
3435 case R_SPARC_16:
3436 if (outrel.r_offset & 1)
3437 r_type = R_SPARC_UA16;
3438 break;
3439 case R_SPARC_UA16:
3440 if (!(outrel.r_offset & 1))
3441 r_type = R_SPARC_16;
3442 break;
3443 case R_SPARC_32:
3444 if (outrel.r_offset & 3)
3445 r_type = R_SPARC_UA32;
3446 break;
3447 case R_SPARC_UA32:
3448 if (!(outrel.r_offset & 3))
3449 r_type = R_SPARC_32;
3450 break;
3451 case R_SPARC_64:
3452 if (outrel.r_offset & 7)
3453 r_type = R_SPARC_UA64;
3454 break;
3455 case R_SPARC_UA64:
3456 if (!(outrel.r_offset & 7))
3457 r_type = R_SPARC_64;
3458 break;
3459 case R_SPARC_DISP8:
3460 case R_SPARC_DISP16:
3461 case R_SPARC_DISP32:
3462 case R_SPARC_DISP64:
3463 /* If the symbol is not dynamic, we should not keep
3464 a dynamic relocation. But an .rela.* slot has been
3465 allocated for it, output R_SPARC_NONE.
3466 FIXME: Add code tracking needed dynamic relocs as
3467 e.g. i386 has. */
3468 if (h->dynindx == -1)
3469 skip = TRUE, relocate = TRUE;
3470 break;
3471 }
3472
3473 if (skip)
3474 memset (&outrel, 0, sizeof outrel);
3475 /* h->dynindx may be -1 if the symbol was marked to
3476 become local. */
3477 else if (h != NULL
3478 && h->dynindx != -1
3479 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3480 || !bfd_link_pic (info)
3481 || !SYMBOLIC_BIND (info, h)
3482 || !h->def_regular))
3483 {
3484 BFD_ASSERT (h->dynindx != -1);
3485 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3486 outrel.r_addend = rel->r_addend;
3487 }
3488 else
3489 {
3490 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3491 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3492 {
3493 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3494 0, R_SPARC_RELATIVE);
3495 outrel.r_addend = relocation + rel->r_addend;
3496 }
3497 else
3498 {
3499 long indx;
3500
3501 outrel.r_addend = relocation + rel->r_addend;
3502
3503 if (is_plt)
3504 sec = htab->elf.splt;
3505
3506 if (bfd_is_abs_section (sec))
3507 indx = 0;
3508 else if (sec == NULL || sec->owner == NULL)
3509 {
3510 bfd_set_error (bfd_error_bad_value);
3511 return FALSE;
3512 }
3513 else
3514 {
3515 asection *osec;
3516
3517 /* We are turning this relocation into one
3518 against a section symbol. It would be
3519 proper to subtract the symbol's value,
3520 osec->vma, from the emitted reloc addend,
3521 but ld.so expects buggy relocs. */
3522 osec = sec->output_section;
3523 indx = elf_section_data (osec)->dynindx;
3524
3525 if (indx == 0)
3526 {
3527 osec = htab->elf.text_index_section;
3528 indx = elf_section_data (osec)->dynindx;
3529 }
3530
3531 /* FIXME: we really should be able to link non-pic
3532 shared libraries. */
3533 if (indx == 0)
3534 {
3535 BFD_FAIL ();
3536 _bfd_error_handler
3537 (_("%B: probably compiled without -fPIC?"),
3538 input_bfd);
3539 bfd_set_error (bfd_error_bad_value);
3540 return FALSE;
3541 }
3542 }
3543
3544 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3545 r_type);
3546 }
3547 }
3548
3549 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3550
3551 /* This reloc will be computed at runtime, so there's no
3552 need to do anything now. */
3553 if (! relocate)
3554 continue;
3555 }
3556 break;
3557
3558 case R_SPARC_TLS_GD_HI22:
3559 if (! ABI_64_P (input_bfd)
3560 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3561 {
3562 /* R_SPARC_REV32 used the same reloc number as
3563 R_SPARC_TLS_GD_HI22. */
3564 r_type = R_SPARC_REV32;
3565 break;
3566 }
3567 /* Fall through */
3568
3569 case R_SPARC_TLS_GD_LO10:
3570 case R_SPARC_TLS_IE_HI22:
3571 case R_SPARC_TLS_IE_LO10:
3572 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3573 tls_type = GOT_UNKNOWN;
3574 if (h == NULL && local_got_offsets)
3575 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3576 else if (h != NULL)
3577 {
3578 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3579 if (!bfd_link_pic (info)
3580 && h->dynindx == -1
3581 && tls_type == GOT_TLS_IE)
3582 switch (SPARC_ELF_R_TYPE (rel->r_info))
3583 {
3584 case R_SPARC_TLS_GD_HI22:
3585 case R_SPARC_TLS_IE_HI22:
3586 r_type = R_SPARC_TLS_LE_HIX22;
3587 break;
3588 default:
3589 r_type = R_SPARC_TLS_LE_LOX10;
3590 break;
3591 }
3592 }
3593 if (tls_type == GOT_TLS_IE)
3594 switch (r_type)
3595 {
3596 case R_SPARC_TLS_GD_HI22:
3597 r_type = R_SPARC_TLS_IE_HI22;
3598 break;
3599 case R_SPARC_TLS_GD_LO10:
3600 r_type = R_SPARC_TLS_IE_LO10;
3601 break;
3602 }
3603
3604 if (r_type == R_SPARC_TLS_LE_HIX22)
3605 {
3606 relocation = tpoff (info, relocation);
3607 break;
3608 }
3609 if (r_type == R_SPARC_TLS_LE_LOX10)
3610 {
3611 /* Change add into xor. */
3612 relocation = tpoff (info, relocation);
3613 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3614 contents + rel->r_offset)
3615 | 0x80182000), contents + rel->r_offset);
3616 break;
3617 }
3618
3619 if (h != NULL)
3620 {
3621 off = h->got.offset;
3622 h->got.offset |= 1;
3623 }
3624 else
3625 {
3626 BFD_ASSERT (local_got_offsets != NULL);
3627 off = local_got_offsets[r_symndx];
3628 local_got_offsets[r_symndx] |= 1;
3629 }
3630
3631 r_sparc_tlsldm:
3632 if (htab->elf.sgot == NULL)
3633 abort ();
3634
3635 if ((off & 1) != 0)
3636 off &= ~1;
3637 else
3638 {
3639 Elf_Internal_Rela outrel;
3640 int dr_type, indx;
3641
3642 if (htab->elf.srelgot == NULL)
3643 abort ();
3644
3645 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3646 htab->elf.sgot->contents + off);
3647 outrel.r_offset = (htab->elf.sgot->output_section->vma
3648 + htab->elf.sgot->output_offset + off);
3649 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3650 if (r_type == R_SPARC_TLS_IE_HI22
3651 || r_type == R_SPARC_TLS_IE_LO10)
3652 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3653 else
3654 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3655 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3656 outrel.r_addend = relocation - dtpoff_base (info);
3657 else
3658 outrel.r_addend = 0;
3659 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3660 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3661
3662 if (r_type == R_SPARC_TLS_GD_HI22
3663 || r_type == R_SPARC_TLS_GD_LO10)
3664 {
3665 if (indx == 0)
3666 {
3667 BFD_ASSERT (! unresolved_reloc);
3668 SPARC_ELF_PUT_WORD (htab, output_bfd,
3669 relocation - dtpoff_base (info),
3670 (htab->elf.sgot->contents + off
3671 + SPARC_ELF_WORD_BYTES (htab)));
3672 }
3673 else
3674 {
3675 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3676 (htab->elf.sgot->contents + off
3677 + SPARC_ELF_WORD_BYTES (htab)));
3678 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3679 SPARC_ELF_DTPOFF_RELOC (htab));
3680 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3681 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3682 &outrel);
3683 }
3684 }
3685 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3686 {
3687 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3688 (htab->elf.sgot->contents + off
3689 + SPARC_ELF_WORD_BYTES (htab)));
3690 }
3691 }
3692
3693 if (off >= (bfd_vma) -2)
3694 abort ();
3695
3696 relocation = htab->elf.sgot->output_offset + off - got_base;
3697 unresolved_reloc = FALSE;
3698 howto = _bfd_sparc_elf_howto_table + r_type;
3699 break;
3700
3701 case R_SPARC_TLS_LDM_HI22:
3702 case R_SPARC_TLS_LDM_LO10:
3703 if (! bfd_link_pic (info))
3704 {
3705 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3706 continue;
3707 }
3708 off = htab->tls_ldm_got.offset;
3709 htab->tls_ldm_got.offset |= 1;
3710 goto r_sparc_tlsldm;
3711
3712 case R_SPARC_TLS_LDO_HIX22:
3713 case R_SPARC_TLS_LDO_LOX10:
3714 if (bfd_link_pic (info))
3715 {
3716 relocation -= dtpoff_base (info);
3717 break;
3718 }
3719
3720 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3721 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3722 /* Fall through. */
3723
3724 case R_SPARC_TLS_LE_HIX22:
3725 case R_SPARC_TLS_LE_LOX10:
3726 if (bfd_link_pic (info))
3727 {
3728 Elf_Internal_Rela outrel;
3729 bfd_boolean skip;
3730
3731 BFD_ASSERT (sreloc != NULL);
3732 skip = FALSE;
3733 outrel.r_offset =
3734 _bfd_elf_section_offset (output_bfd, info, input_section,
3735 rel->r_offset);
3736 if (outrel.r_offset == (bfd_vma) -1)
3737 skip = TRUE;
3738 else if (outrel.r_offset == (bfd_vma) -2)
3739 skip = TRUE;
3740 outrel.r_offset += (input_section->output_section->vma
3741 + input_section->output_offset);
3742 if (skip)
3743 memset (&outrel, 0, sizeof outrel);
3744 else
3745 {
3746 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3747 outrel.r_addend = relocation - dtpoff_base (info)
3748 + rel->r_addend;
3749 }
3750
3751 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3752 continue;
3753 }
3754 relocation = tpoff (info, relocation);
3755 break;
3756
3757 case R_SPARC_TLS_LDM_CALL:
3758 if (! bfd_link_pic (info))
3759 {
3760 /* mov %g0, %o0 */
3761 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3762 continue;
3763 }
3764 /* Fall through */
3765
3766 case R_SPARC_TLS_GD_CALL:
3767 tls_type = GOT_UNKNOWN;
3768 if (h == NULL && local_got_offsets)
3769 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3770 else if (h != NULL)
3771 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3772 if (! bfd_link_pic (info)
3773 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3774 {
3775 Elf_Internal_Rela *rel2;
3776 bfd_vma insn;
3777
3778 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3779 {
3780 /* GD -> LE */
3781 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3782 continue;
3783 }
3784
3785 /* GD -> IE */
3786 if (rel + 1 < relend
3787 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3788 && rel[1].r_offset == rel->r_offset + 4
3789 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3790 && (((insn = bfd_get_32 (input_bfd,
3791 contents + rel[1].r_offset))
3792 >> 25) & 0x1f) == 8)
3793 {
3794 /* We have
3795 call __tls_get_addr, %tgd_call(foo)
3796 add %reg1, %reg2, %o0, %tgd_add(foo)
3797 and change it into IE:
3798 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3799 add %g7, %o0, %o0, %tie_add(foo).
3800 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3801 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3802 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3803 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3804 contents + rel->r_offset);
3805 bfd_put_32 (output_bfd, 0x9001c008,
3806 contents + rel->r_offset + 4);
3807 rel++;
3808 continue;
3809 }
3810
3811 /* We cannot just overwrite the delay slot instruction,
3812 as it might be what puts the %o0 argument to
3813 __tls_get_addr into place. So we have to transpose
3814 the delay slot with the add we patch in. */
3815 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3816 bfd_put_32 (output_bfd, insn,
3817 contents + rel->r_offset);
3818 bfd_put_32 (output_bfd, 0x9001c008,
3819 contents + rel->r_offset + 4);
3820
3821 rel2 = rel;
3822 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3823 rel->r_offset + 4))
3824 != NULL)
3825 {
3826 /* If the instruction we moved has a relocation attached to
3827 it, adjust the offset so that it will apply to the correct
3828 instruction. */
3829 rel2->r_offset -= 4;
3830 }
3831 continue;
3832 }
3833
3834 h = (struct elf_link_hash_entry *)
3835 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3836 FALSE, TRUE);
3837 BFD_ASSERT (h != NULL);
3838 r_type = R_SPARC_WPLT30;
3839 howto = _bfd_sparc_elf_howto_table + r_type;
3840 goto r_sparc_wplt30;
3841
3842 case R_SPARC_TLS_GD_ADD:
3843 tls_type = GOT_UNKNOWN;
3844 if (h == NULL && local_got_offsets)
3845 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3846 else if (h != NULL)
3847 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3848 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE)
3849 {
3850 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3851 changed into IE:
3852 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3853 or LE:
3854 add %g7, %reg2, %reg3. */
3855 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3856 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info))
3857 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3858 else
3859 relocation = (insn & ~0x7c000) | 0x1c000;
3860 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3861 }
3862 continue;
3863
3864 case R_SPARC_TLS_LDM_ADD:
3865 if (! bfd_link_pic (info))
3866 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3867 continue;
3868
3869 case R_SPARC_TLS_LDO_ADD:
3870 if (! bfd_link_pic (info))
3871 {
3872 /* Change rs1 into %g7. */
3873 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3874 insn = (insn & ~0x7c000) | 0x1c000;
3875 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3876 }
3877 continue;
3878
3879 case R_SPARC_TLS_IE_LD:
3880 case R_SPARC_TLS_IE_LDX:
3881 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3882 {
3883 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3884 int rs2 = insn & 0x1f;
3885 int rd = (insn >> 25) & 0x1f;
3886
3887 if (rs2 == rd)
3888 relocation = SPARC_NOP;
3889 else
3890 relocation = 0x80100000 | (insn & 0x3e00001f);
3891 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3892 }
3893 continue;
3894
3895 case R_SPARC_TLS_IE_ADD:
3896 /* Totally useless relocation. */
3897 continue;
3898
3899 case R_SPARC_TLS_DTPOFF32:
3900 case R_SPARC_TLS_DTPOFF64:
3901 relocation -= dtpoff_base (info);
3902 break;
3903
3904 default:
3905 break;
3906 }
3907
3908 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3909 because such sections are not SEC_ALLOC and thus ld.so will
3910 not process them. */
3911 if (unresolved_reloc
3912 && !((input_section->flags & SEC_DEBUGGING) != 0
3913 && h->def_dynamic)
3914 && _bfd_elf_section_offset (output_bfd, info, input_section,
3915 rel->r_offset) != (bfd_vma) -1)
3916 _bfd_error_handler
3917 /* xgettext:c-format */
3918 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3919 input_bfd,
3920 input_section,
3921 (long) rel->r_offset,
3922 howto->name,
3923 h->root.root.string);
3924
3925 r = bfd_reloc_continue;
3926 if (r_type == R_SPARC_OLO10)
3927 {
3928 bfd_vma x;
3929
3930 if (! ABI_64_P (output_bfd))
3931 abort ();
3932
3933 relocation += rel->r_addend;
3934 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3935
3936 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3937 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3938 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3939
3940 r = bfd_check_overflow (howto->complain_on_overflow,
3941 howto->bitsize, howto->rightshift,
3942 bfd_arch_bits_per_address (input_bfd),
3943 relocation);
3944 }
3945 else if (r_type == R_SPARC_WDISP16)
3946 {
3947 bfd_vma x;
3948
3949 relocation += rel->r_addend;
3950 relocation -= (input_section->output_section->vma
3951 + input_section->output_offset);
3952 relocation -= rel->r_offset;
3953
3954 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3955 x |= ((((relocation >> 2) & 0xc000) << 6)
3956 | ((relocation >> 2) & 0x3fff));
3957 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3958
3959 r = bfd_check_overflow (howto->complain_on_overflow,
3960 howto->bitsize, howto->rightshift,
3961 bfd_arch_bits_per_address (input_bfd),
3962 relocation);
3963 }
3964 else if (r_type == R_SPARC_WDISP10)
3965 {
3966 bfd_vma x;
3967
3968 relocation += rel->r_addend;
3969 relocation -= (input_section->output_section->vma
3970 + input_section->output_offset);
3971 relocation -= rel->r_offset;
3972
3973 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3974 x |= ((((relocation >> 2) & 0x300) << 11)
3975 | (((relocation >> 2) & 0xff) << 5));
3976 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3977
3978 r = bfd_check_overflow (howto->complain_on_overflow,
3979 howto->bitsize, howto->rightshift,
3980 bfd_arch_bits_per_address (input_bfd),
3981 relocation);
3982 }
3983 else if (r_type == R_SPARC_REV32)
3984 {
3985 bfd_vma x;
3986
3987 relocation = relocation + rel->r_addend;
3988
3989 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3990 x = x + relocation;
3991 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3992 r = bfd_reloc_ok;
3993 }
3994 else if (r_type == R_SPARC_TLS_LDO_HIX22
3995 || r_type == R_SPARC_TLS_LE_HIX22)
3996 {
3997 bfd_vma x;
3998
3999 relocation += rel->r_addend;
4000 if (r_type == R_SPARC_TLS_LE_HIX22)
4001 relocation ^= MINUS_ONE;
4002
4003 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4004 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4005 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4006 r = bfd_reloc_ok;
4007 }
4008 else if (r_type == R_SPARC_TLS_LDO_LOX10
4009 || r_type == R_SPARC_TLS_LE_LOX10)
4010 {
4011 bfd_vma x;
4012
4013 relocation += rel->r_addend;
4014 relocation &= 0x3ff;
4015 if (r_type == R_SPARC_TLS_LE_LOX10)
4016 relocation |= 0x1c00;
4017
4018 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4019 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4020 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4021
4022 r = bfd_reloc_ok;
4023 }
4024 else if (r_type == R_SPARC_HIX22
4025 || r_type == R_SPARC_GOTDATA_HIX22
4026 || r_type == R_SPARC_GOTDATA_OP_HIX22)
4027 {
4028 bfd_vma x;
4029
4030 relocation += rel->r_addend;
4031 if (r_type == R_SPARC_HIX22
4032 || (bfd_signed_vma) relocation < 0)
4033 relocation = relocation ^ MINUS_ONE;
4034
4035 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4036 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4037 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4038
4039 r = bfd_check_overflow (howto->complain_on_overflow,
4040 howto->bitsize, howto->rightshift,
4041 bfd_arch_bits_per_address (input_bfd),
4042 relocation);
4043 }
4044 else if (r_type == R_SPARC_LOX10
4045 || r_type == R_SPARC_GOTDATA_LOX10
4046 || r_type == R_SPARC_GOTDATA_OP_LOX10)
4047 {
4048 bfd_vma x;
4049
4050 relocation += rel->r_addend;
4051 if (r_type == R_SPARC_LOX10
4052 || (bfd_signed_vma) relocation < 0)
4053 relocation = (relocation & 0x3ff) | 0x1c00;
4054 else
4055 relocation = (relocation & 0x3ff);
4056
4057 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4058 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4059 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4060
4061 r = bfd_reloc_ok;
4062 }
4063 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4064 && sec_do_relax (input_section)
4065 && rel->r_offset + 4 < input_section->size)
4066 {
4067 #define G0 0
4068 #define O7 15
4069 #define XCC (2 << 20)
4070 #define COND(x) (((x)&0xf)<<25)
4071 #define CONDA COND(0x8)
4072 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4073 #define INSN_BA (F2(0,2) | CONDA)
4074 #define INSN_OR F3(2, 0x2, 0)
4075 #define INSN_NOP F2(0,4)
4076
4077 bfd_vma x, y;
4078
4079 /* If the instruction is a call with either:
4080 restore
4081 arithmetic instruction with rd == %o7
4082 where rs1 != %o7 and rs2 if it is register != %o7
4083 then we can optimize if the call destination is near
4084 by changing the call into a branch always. */
4085 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4086 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4087 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4088 {
4089 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4090 || ((y & OP3(0x28)) == 0 /* arithmetic */
4091 && (y & RD(~0)) == RD(O7)))
4092 && (y & RS1(~0)) != RS1(O7)
4093 && ((y & F3I(~0))
4094 || (y & RS2(~0)) != RS2(O7)))
4095 {
4096 bfd_vma reloc;
4097
4098 reloc = relocation + rel->r_addend - rel->r_offset;
4099 reloc -= (input_section->output_section->vma
4100 + input_section->output_offset);
4101
4102 /* Ensure the branch fits into simm22. */
4103 if ((reloc & 3) == 0
4104 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4105 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4106 {
4107 reloc >>= 2;
4108
4109 /* Check whether it fits into simm19. */
4110 if (((reloc & 0x3c0000) == 0
4111 || (reloc & 0x3c0000) == 0x3c0000)
4112 && (ABI_64_P (output_bfd)
4113 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4114 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4115 else
4116 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4117 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4118 r = bfd_reloc_ok;
4119 if (rel->r_offset >= 4
4120 && (y & (0xffffffff ^ RS1(~0)))
4121 == (INSN_OR | RD(O7) | RS2(G0)))
4122 {
4123 bfd_vma z;
4124 unsigned int reg;
4125
4126 z = bfd_get_32 (input_bfd,
4127 contents + rel->r_offset - 4);
4128 if ((z & (0xffffffff ^ RD(~0)))
4129 != (INSN_OR | RS1(O7) | RS2(G0)))
4130 continue;
4131
4132 /* The sequence was
4133 or %o7, %g0, %rN
4134 call foo
4135 or %rN, %g0, %o7
4136
4137 If call foo was replaced with ba, replace
4138 or %rN, %g0, %o7 with nop. */
4139
4140 reg = (y & RS1(~0)) >> 14;
4141 if (reg != ((z & RD(~0)) >> 25)
4142 || reg == G0 || reg == O7)
4143 continue;
4144
4145 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4146 contents + rel->r_offset + 4);
4147 }
4148
4149 }
4150 }
4151 }
4152 }
4153
4154 if (r == bfd_reloc_continue)
4155 {
4156 do_relocation:
4157 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4158 contents, rel->r_offset,
4159 relocation, rel->r_addend);
4160 }
4161 if (r != bfd_reloc_ok)
4162 {
4163 switch (r)
4164 {
4165 default:
4166 case bfd_reloc_outofrange:
4167 abort ();
4168 case bfd_reloc_overflow:
4169 {
4170 const char *name;
4171
4172 /* The Solaris native linker silently disregards overflows.
4173 We don't, but this breaks stabs debugging info, whose
4174 relocations are only 32-bits wide. Ignore overflows in
4175 this case and also for discarded entries. */
4176 if ((r_type == R_SPARC_32
4177 || r_type == R_SPARC_UA32
4178 || r_type == R_SPARC_DISP32)
4179 && (((input_section->flags & SEC_DEBUGGING) != 0
4180 && strcmp (bfd_section_name (input_bfd,
4181 input_section),
4182 ".stab") == 0)
4183 || _bfd_elf_section_offset (output_bfd, info,
4184 input_section,
4185 rel->r_offset)
4186 == (bfd_vma)-1))
4187 break;
4188
4189 if (h != NULL)
4190 {
4191 /* Assume this is a call protected by other code that
4192 detect the symbol is undefined. If this is the case,
4193 we can safely ignore the overflow. If not, the
4194 program is hosed anyway, and a little warning isn't
4195 going to help. */
4196 if (h->root.type == bfd_link_hash_undefweak
4197 && howto->pc_relative)
4198 break;
4199
4200 name = NULL;
4201 }
4202 else
4203 {
4204 name = bfd_elf_string_from_elf_section (input_bfd,
4205 symtab_hdr->sh_link,
4206 sym->st_name);
4207 if (name == NULL)
4208 return FALSE;
4209 if (*name == '\0')
4210 name = bfd_section_name (input_bfd, sec);
4211 }
4212 (*info->callbacks->reloc_overflow)
4213 (info, (h ? &h->root : NULL), name, howto->name,
4214 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4215 }
4216 break;
4217 }
4218 }
4219 }
4220
4221 return TRUE;
4222 }
4223
4224 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4225 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4226 is the offset of the associated .got.plt entry from
4227 _GLOBAL_OFFSET_TABLE_. */
4228
4229 static void
4230 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4231 bfd_vma plt_offset, bfd_vma plt_index,
4232 bfd_vma got_offset)
4233 {
4234 bfd_vma got_base;
4235 const bfd_vma *plt_entry;
4236 struct _bfd_sparc_elf_link_hash_table *htab;
4237 bfd_byte *loc;
4238 Elf_Internal_Rela rela;
4239
4240 htab = _bfd_sparc_elf_hash_table (info);
4241 BFD_ASSERT (htab != NULL);
4242
4243 if (bfd_link_pic (info))
4244 {
4245 plt_entry = sparc_vxworks_shared_plt_entry;
4246 got_base = 0;
4247 }
4248 else
4249 {
4250 plt_entry = sparc_vxworks_exec_plt_entry;
4251 got_base = (htab->elf.hgot->root.u.def.value
4252 + htab->elf.hgot->root.u.def.section->output_offset
4253 + htab->elf.hgot->root.u.def.section->output_section->vma);
4254 }
4255
4256 /* Fill in the entry in the procedure linkage table. */
4257 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4258 htab->elf.splt->contents + plt_offset);
4259 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4260 htab->elf.splt->contents + plt_offset + 4);
4261 bfd_put_32 (output_bfd, plt_entry[2],
4262 htab->elf.splt->contents + plt_offset + 8);
4263 bfd_put_32 (output_bfd, plt_entry[3],
4264 htab->elf.splt->contents + plt_offset + 12);
4265 bfd_put_32 (output_bfd, plt_entry[4],
4266 htab->elf.splt->contents + plt_offset + 16);
4267 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4268 htab->elf.splt->contents + plt_offset + 20);
4269 /* PC-relative displacement for a branch to the start of
4270 the PLT section. */
4271 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4272 & 0x003fffff),
4273 htab->elf.splt->contents + plt_offset + 24);
4274 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4275 htab->elf.splt->contents + plt_offset + 28);
4276
4277 /* Fill in the .got.plt entry, pointing initially at the
4278 second half of the PLT entry. */
4279 BFD_ASSERT (htab->elf.sgotplt != NULL);
4280 bfd_put_32 (output_bfd,
4281 htab->elf.splt->output_section->vma
4282 + htab->elf.splt->output_offset
4283 + plt_offset + 20,
4284 htab->elf.sgotplt->contents + got_offset);
4285
4286 /* Add relocations to .rela.plt.unloaded. */
4287 if (!bfd_link_pic (info))
4288 {
4289 loc = (htab->srelplt2->contents
4290 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4291
4292 /* Relocate the initial sethi. */
4293 rela.r_offset = (htab->elf.splt->output_section->vma
4294 + htab->elf.splt->output_offset
4295 + plt_offset);
4296 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4297 rela.r_addend = got_offset;
4298 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4299 loc += sizeof (Elf32_External_Rela);
4300
4301 /* Likewise the following or. */
4302 rela.r_offset += 4;
4303 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4304 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4305 loc += sizeof (Elf32_External_Rela);
4306
4307 /* Relocate the .got.plt entry. */
4308 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4309 + htab->elf.sgotplt->output_offset
4310 + got_offset);
4311 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4312 rela.r_addend = plt_offset + 20;
4313 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4314 }
4315 }
4316
4317 /* Finish up dynamic symbol handling. We set the contents of various
4318 dynamic sections here. */
4319
4320 bfd_boolean
4321 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4322 struct bfd_link_info *info,
4323 struct elf_link_hash_entry *h,
4324 Elf_Internal_Sym *sym)
4325 {
4326 struct _bfd_sparc_elf_link_hash_table *htab;
4327 const struct elf_backend_data *bed;
4328
4329 htab = _bfd_sparc_elf_hash_table (info);
4330 BFD_ASSERT (htab != NULL);
4331 bed = get_elf_backend_data (output_bfd);
4332
4333 if (h->plt.offset != (bfd_vma) -1)
4334 {
4335 asection *splt;
4336 asection *srela;
4337 Elf_Internal_Rela rela;
4338 bfd_byte *loc;
4339 bfd_vma r_offset, got_offset;
4340 int rela_index;
4341
4342 /* When building a static executable, use .iplt and
4343 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4344 if (htab->elf.splt != NULL)
4345 {
4346 splt = htab->elf.splt;
4347 srela = htab->elf.srelplt;
4348 }
4349 else
4350 {
4351 splt = htab->elf.iplt;
4352 srela = htab->elf.irelplt;
4353 }
4354
4355 if (splt == NULL || srela == NULL)
4356 abort ();
4357
4358 /* Fill in the entry in the .rela.plt section. */
4359 if (htab->is_vxworks)
4360 {
4361 /* Work out the index of this PLT entry. */
4362 rela_index = ((h->plt.offset - htab->plt_header_size)
4363 / htab->plt_entry_size);
4364
4365 /* Calculate the offset of the associated .got.plt entry.
4366 The first three entries are reserved. */
4367 got_offset = (rela_index + 3) * 4;
4368
4369 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4370 rela_index, got_offset);
4371
4372
4373 /* On VxWorks, the relocation points to the .got.plt entry,
4374 not the .plt entry. */
4375 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4376 + htab->elf.sgotplt->output_offset
4377 + got_offset);
4378 rela.r_addend = 0;
4379 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4380 R_SPARC_JMP_SLOT);
4381 }
4382 else
4383 {
4384 bfd_boolean ifunc = FALSE;
4385
4386 /* Fill in the entry in the procedure linkage table. */
4387 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4388 h->plt.offset, splt->size,
4389 &r_offset);
4390
4391 if (h == NULL
4392 || h->dynindx == -1
4393 || ((bfd_link_executable (info)
4394 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4395 && h->def_regular
4396 && h->type == STT_GNU_IFUNC))
4397 {
4398 ifunc = TRUE;
4399 BFD_ASSERT (h == NULL
4400 || (h->type == STT_GNU_IFUNC
4401 && h->def_regular
4402 && (h->root.type == bfd_link_hash_defined
4403 || h->root.type == bfd_link_hash_defweak)));
4404 }
4405
4406 rela.r_offset = r_offset
4407 + (splt->output_section->vma + splt->output_offset);
4408 if (ABI_64_P (output_bfd)
4409 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4410 {
4411 if (ifunc)
4412 {
4413 rela.r_addend = (h->root.u.def.section->output_section->vma
4414 + h->root.u.def.section->output_offset
4415 + h->root.u.def.value);
4416 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4417 R_SPARC_IRELATIVE);
4418 }
4419 else
4420 {
4421 rela.r_addend = (-(h->plt.offset + 4)
4422 - splt->output_section->vma
4423 - splt->output_offset);
4424 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4425 R_SPARC_JMP_SLOT);
4426 }
4427 }
4428 else
4429 {
4430 if (ifunc)
4431 {
4432 rela.r_addend = (h->root.u.def.section->output_section->vma
4433 + h->root.u.def.section->output_offset
4434 + h->root.u.def.value);
4435 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4436 R_SPARC_JMP_IREL);
4437 }
4438 else
4439 {
4440 rela.r_addend = 0;
4441 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4442 R_SPARC_JMP_SLOT);
4443 }
4444 }
4445 }
4446
4447 /* Adjust for the first 4 reserved elements in the .plt section
4448 when setting the offset in the .rela.plt section.
4449 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4450 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4451
4452 loc = srela->contents;
4453 loc += rela_index * bed->s->sizeof_rela;
4454 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4455
4456 if (!h->def_regular)
4457 {
4458 /* Mark the symbol as undefined, rather than as defined in
4459 the .plt section. Leave the value alone. */
4460 sym->st_shndx = SHN_UNDEF;
4461 /* If the symbol is weak, we do need to clear the value.
4462 Otherwise, the PLT entry would provide a definition for
4463 the symbol even if the symbol wasn't defined anywhere,
4464 and so the symbol would never be NULL. */
4465 if (!h->ref_regular_nonweak)
4466 sym->st_value = 0;
4467 }
4468 }
4469
4470 if (h->got.offset != (bfd_vma) -1
4471 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4472 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4473 {
4474 asection *sgot;
4475 asection *srela;
4476 Elf_Internal_Rela rela;
4477
4478 /* This symbol has an entry in the GOT. Set it up. */
4479
4480 sgot = htab->elf.sgot;
4481 srela = htab->elf.srelgot;
4482 BFD_ASSERT (sgot != NULL && srela != NULL);
4483
4484 rela.r_offset = (sgot->output_section->vma
4485 + sgot->output_offset
4486 + (h->got.offset &~ (bfd_vma) 1));
4487
4488 /* If this is a -Bsymbolic link, and the symbol is defined
4489 locally, we just want to emit a RELATIVE reloc. Likewise if
4490 the symbol was forced to be local because of a version file.
4491 The entry in the global offset table will already have been
4492 initialized in the relocate_section function. */
4493 if (! bfd_link_pic (info)
4494 && h->type == STT_GNU_IFUNC
4495 && h->def_regular)
4496 {
4497 asection *plt;
4498
4499 /* We load the GOT entry with the PLT entry. */
4500 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4501 SPARC_ELF_PUT_WORD (htab, output_bfd,
4502 (plt->output_section->vma
4503 + plt->output_offset + h->plt.offset),
4504 htab->elf.sgot->contents
4505 + (h->got.offset & ~(bfd_vma) 1));
4506 return TRUE;
4507 }
4508 else if (bfd_link_pic (info)
4509 && SYMBOL_REFERENCES_LOCAL (info, h))
4510 {
4511 asection *sec = h->root.u.def.section;
4512 if (h->type == STT_GNU_IFUNC)
4513 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4514 else
4515 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4516 rela.r_addend = (h->root.u.def.value
4517 + sec->output_section->vma
4518 + sec->output_offset);
4519 }
4520 else
4521 {
4522 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4523 rela.r_addend = 0;
4524 }
4525
4526 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4527 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4528 sparc_elf_append_rela (output_bfd, srela, &rela);
4529 }
4530
4531 if (h->needs_copy)
4532 {
4533 asection *s;
4534 Elf_Internal_Rela rela;
4535
4536 /* This symbols needs a copy reloc. Set it up. */
4537 BFD_ASSERT (h->dynindx != -1);
4538
4539 rela.r_offset = (h->root.u.def.value
4540 + h->root.u.def.section->output_section->vma
4541 + h->root.u.def.section->output_offset);
4542 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4543 rela.r_addend = 0;
4544 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
4545 s = htab->elf.sreldynrelro;
4546 else
4547 s = htab->elf.srelbss;
4548 sparc_elf_append_rela (output_bfd, s, &rela);
4549 }
4550
4551 /* Mark some specially defined symbols as absolute. On VxWorks,
4552 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4553 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4554 if (sym != NULL
4555 && (h == htab->elf.hdynamic
4556 || (!htab->is_vxworks
4557 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4558 sym->st_shndx = SHN_ABS;
4559
4560 return TRUE;
4561 }
4562
4563 /* Finish up the dynamic sections. */
4564
4565 static bfd_boolean
4566 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4567 bfd *dynobj, asection *sdyn,
4568 asection *splt ATTRIBUTE_UNUSED)
4569 {
4570 struct _bfd_sparc_elf_link_hash_table *htab;
4571 const struct elf_backend_data *bed;
4572 bfd_byte *dyncon, *dynconend;
4573 size_t dynsize;
4574 int stt_regidx = -1;
4575 bfd_boolean abi_64_p;
4576
4577 htab = _bfd_sparc_elf_hash_table (info);
4578 BFD_ASSERT (htab != NULL);
4579 bed = get_elf_backend_data (output_bfd);
4580 dynsize = bed->s->sizeof_dyn;
4581 dynconend = sdyn->contents + sdyn->size;
4582 abi_64_p = ABI_64_P (output_bfd);
4583 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4584 {
4585 Elf_Internal_Dyn dyn;
4586 bfd_boolean size;
4587
4588 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4589
4590 if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4591 {
4592 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4593 not to the start of the PLT. */
4594 if (htab->elf.sgotplt)
4595 {
4596 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4597 + htab->elf.sgotplt->output_offset);
4598 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4599 }
4600 }
4601 else if (htab->is_vxworks
4602 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4603 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4604 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4605 {
4606 if (stt_regidx == -1)
4607 {
4608 stt_regidx =
4609 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4610 if (stt_regidx == -1)
4611 return FALSE;
4612 }
4613 dyn.d_un.d_val = stt_regidx++;
4614 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4615 }
4616 else
4617 {
4618 asection *s;
4619
4620 switch (dyn.d_tag)
4621 {
4622 case DT_PLTGOT:
4623 s = htab->elf.splt;
4624 size = FALSE;
4625 break;
4626 case DT_PLTRELSZ:
4627 s = htab->elf.srelplt;
4628 size = TRUE;
4629 break;
4630 case DT_JMPREL:
4631 s = htab->elf.srelplt;
4632 size = FALSE;
4633 break;
4634 default:
4635 continue;
4636 }
4637
4638 if (s == NULL)
4639 dyn.d_un.d_val = 0;
4640 else
4641 {
4642 if (!size)
4643 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4644 else
4645 dyn.d_un.d_val = s->size;
4646 }
4647 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4648 }
4649 }
4650 return TRUE;
4651 }
4652
4653 /* Install the first PLT entry in a VxWorks executable and make sure that
4654 .rela.plt.unloaded relocations have the correct symbol indexes. */
4655
4656 static void
4657 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4658 {
4659 struct _bfd_sparc_elf_link_hash_table *htab;
4660 Elf_Internal_Rela rela;
4661 bfd_vma got_base;
4662 bfd_byte *loc;
4663
4664 htab = _bfd_sparc_elf_hash_table (info);
4665 BFD_ASSERT (htab != NULL);
4666
4667 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4668 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4669 + htab->elf.hgot->root.u.def.section->output_offset
4670 + htab->elf.hgot->root.u.def.value);
4671
4672 /* Install the initial PLT entry. */
4673 bfd_put_32 (output_bfd,
4674 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4675 htab->elf.splt->contents);
4676 bfd_put_32 (output_bfd,
4677 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4678 htab->elf.splt->contents + 4);
4679 bfd_put_32 (output_bfd,
4680 sparc_vxworks_exec_plt0_entry[2],
4681 htab->elf.splt->contents + 8);
4682 bfd_put_32 (output_bfd,
4683 sparc_vxworks_exec_plt0_entry[3],
4684 htab->elf.splt->contents + 12);
4685 bfd_put_32 (output_bfd,
4686 sparc_vxworks_exec_plt0_entry[4],
4687 htab->elf.splt->contents + 16);
4688
4689 loc = htab->srelplt2->contents;
4690
4691 /* Add an unloaded relocation for the initial entry's "sethi". */
4692 rela.r_offset = (htab->elf.splt->output_section->vma
4693 + htab->elf.splt->output_offset);
4694 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4695 rela.r_addend = 8;
4696 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4697 loc += sizeof (Elf32_External_Rela);
4698
4699 /* Likewise the following "or". */
4700 rela.r_offset += 4;
4701 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4702 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4703 loc += sizeof (Elf32_External_Rela);
4704
4705 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4706 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4707 in which symbols were output. */
4708 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4709 {
4710 Elf_Internal_Rela rel;
4711
4712 /* The entry's initial "sethi" (against _G_O_T_). */
4713 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4714 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4715 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4716 loc += sizeof (Elf32_External_Rela);
4717
4718 /* The following "or" (also against _G_O_T_). */
4719 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4720 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4721 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4722 loc += sizeof (Elf32_External_Rela);
4723
4724 /* The .got.plt entry (against _P_L_T_). */
4725 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4726 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4727 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4728 loc += sizeof (Elf32_External_Rela);
4729 }
4730 }
4731
4732 /* Install the first PLT entry in a VxWorks shared object. */
4733
4734 static void
4735 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4736 {
4737 struct _bfd_sparc_elf_link_hash_table *htab;
4738 unsigned int i;
4739
4740 htab = _bfd_sparc_elf_hash_table (info);
4741 BFD_ASSERT (htab != NULL);
4742
4743 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4744 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4745 htab->elf.splt->contents + i * 4);
4746 }
4747
4748 /* Finish up local dynamic symbol handling. We set the contents of
4749 various dynamic sections here. */
4750
4751 static bfd_boolean
4752 finish_local_dynamic_symbol (void **slot, void *inf)
4753 {
4754 struct elf_link_hash_entry *h
4755 = (struct elf_link_hash_entry *) *slot;
4756 struct bfd_link_info *info
4757 = (struct bfd_link_info *) inf;
4758
4759 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4760 h, NULL);
4761 }
4762
4763 bfd_boolean
4764 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4765 {
4766 bfd *dynobj;
4767 asection *sdyn;
4768 struct _bfd_sparc_elf_link_hash_table *htab;
4769
4770 htab = _bfd_sparc_elf_hash_table (info);
4771 BFD_ASSERT (htab != NULL);
4772 dynobj = htab->elf.dynobj;
4773
4774 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4775
4776 if (elf_hash_table (info)->dynamic_sections_created)
4777 {
4778 asection *splt;
4779
4780 splt = htab->elf.splt;
4781 BFD_ASSERT (splt != NULL && sdyn != NULL);
4782
4783 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4784 return FALSE;
4785
4786 /* Initialize the contents of the .plt section. */
4787 if (splt->size > 0)
4788 {
4789 if (htab->is_vxworks)
4790 {
4791 if (bfd_link_pic (info))
4792 sparc_vxworks_finish_shared_plt (output_bfd, info);
4793 else
4794 sparc_vxworks_finish_exec_plt (output_bfd, info);
4795 }
4796 else
4797 {
4798 memset (splt->contents, 0, htab->plt_header_size);
4799 if (!ABI_64_P (output_bfd))
4800 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4801 splt->contents + splt->size - 4);
4802 }
4803 }
4804
4805 if (elf_section_data (splt->output_section) != NULL)
4806 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4807 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4808 ? 0 : htab->plt_entry_size);
4809 }
4810
4811 /* Set the first entry in the global offset table to the address of
4812 the dynamic section. */
4813 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4814 {
4815 bfd_vma val = (sdyn ?
4816 sdyn->output_section->vma + sdyn->output_offset :
4817 0);
4818
4819 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4820 }
4821
4822 if (htab->elf.sgot)
4823 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4824 SPARC_ELF_WORD_BYTES (htab);
4825
4826 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4827 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4828
4829 return TRUE;
4830 }
4831
4832 \f
4833 /* Set the right machine number for a SPARC ELF file. */
4834
4835 bfd_boolean
4836 _bfd_sparc_elf_object_p (bfd *abfd)
4837 {
4838 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4839 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4840 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4841
4842 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4843 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4844 | ELF_SPARC_HWCAP_VIS3
4845 | ELF_SPARC_HWCAP_HPC);
4846 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4847 | ELF_SPARC_HWCAP_DES
4848 | ELF_SPARC_HWCAP_KASUMI
4849 | ELF_SPARC_HWCAP_CAMELLIA
4850 | ELF_SPARC_HWCAP_MD5
4851 | ELF_SPARC_HWCAP_SHA1
4852 | ELF_SPARC_HWCAP_SHA256
4853 | ELF_SPARC_HWCAP_SHA512
4854 | ELF_SPARC_HWCAP_MPMUL
4855 | ELF_SPARC_HWCAP_MONT
4856 | ELF_SPARC_HWCAP_CRC32C
4857 | ELF_SPARC_HWCAP_CBCOND
4858 | ELF_SPARC_HWCAP_PAUSE);
4859 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4860 | ELF_SPARC_HWCAP_IMA);
4861 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4862 | ELF_SPARC_HWCAP2_MWAIT
4863 | ELF_SPARC_HWCAP2_XMPMUL
4864 | ELF_SPARC_HWCAP2_XMONT);
4865
4866 if (ABI_64_P (abfd))
4867 {
4868 unsigned long mach = bfd_mach_sparc_v9;
4869
4870 if (hwcaps2->i & v9m_hwcaps2_mask)
4871 mach = bfd_mach_sparc_v9m;
4872 else if (hwcaps->i & v9v_hwcaps_mask)
4873 mach = bfd_mach_sparc_v9v;
4874 else if (hwcaps->i & v9e_hwcaps_mask)
4875 mach = bfd_mach_sparc_v9e;
4876 else if (hwcaps->i & v9d_hwcaps_mask)
4877 mach = bfd_mach_sparc_v9d;
4878 else if (hwcaps->i & v9c_hwcaps_mask)
4879 mach = bfd_mach_sparc_v9c;
4880 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4881 mach = bfd_mach_sparc_v9b;
4882 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4883 mach = bfd_mach_sparc_v9a;
4884 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4885 }
4886 else
4887 {
4888 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4889 {
4890 if (hwcaps2->i & v9m_hwcaps2_mask)
4891 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4892 bfd_mach_sparc_v8plusm);
4893 else if (hwcaps->i & v9v_hwcaps_mask)
4894 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4895 bfd_mach_sparc_v8plusv);
4896 else if (hwcaps->i & v9e_hwcaps_mask)
4897 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4898 bfd_mach_sparc_v8pluse);
4899 else if (hwcaps->i & v9d_hwcaps_mask)
4900 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4901 bfd_mach_sparc_v8plusd);
4902 else if (hwcaps->i & v9c_hwcaps_mask)
4903 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4904 bfd_mach_sparc_v8plusc);
4905 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4906 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4907 bfd_mach_sparc_v8plusb);
4908 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4909 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4910 bfd_mach_sparc_v8plusa);
4911 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4912 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4913 bfd_mach_sparc_v8plus);
4914 else
4915 return FALSE;
4916 }
4917 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4918 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4919 bfd_mach_sparc_sparclite_le);
4920 else
4921 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4922 }
4923 }
4924
4925 /* Return address for Ith PLT stub in section PLT, for relocation REL
4926 or (bfd_vma) -1 if it should not be included. */
4927
4928 bfd_vma
4929 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4930 {
4931 if (ABI_64_P (plt->owner))
4932 {
4933 bfd_vma j;
4934
4935 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4936 if (i < PLT64_LARGE_THRESHOLD)
4937 return plt->vma + i * PLT64_ENTRY_SIZE;
4938
4939 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4940 i -= j;
4941 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4942 }
4943 else
4944 return rel->address;
4945 }
4946
4947 /* Merge backend specific data from an object file to the output
4948 object file when linking. */
4949
4950 bfd_boolean
4951 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4952 {
4953 bfd *obfd = info->output_bfd;
4954 obj_attribute *in_attr, *in_attrs;
4955 obj_attribute *out_attr, *out_attrs;
4956
4957 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4958 {
4959 /* This is the first object. Copy the attributes. */
4960 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4961
4962 /* Use the Tag_null value to indicate the attributes have been
4963 initialized. */
4964 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4965
4966 return TRUE;
4967 }
4968
4969 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4970 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4971
4972 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4973 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4974
4975 out_attr->i |= in_attr->i;
4976 out_attr->type = 1;
4977
4978 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4979 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4980
4981 out_attr->i |= in_attr->i;
4982 out_attr->type = 1;
4983
4984 /* Merge Tag_compatibility attributes and any common GNU ones. */
4985 _bfd_elf_merge_object_attributes (ibfd, info);
4986
4987 return TRUE;
4988 }
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