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80fda1b0e04ff80c3c0206e624d58120e25ab817
[deliverable/binutils-gdb.git] / bfd / elfxx-sparc.c
1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2017 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 /* Return whether H is local and its ADDRESS is within 4G of
2931 _GLOBAL_OFFSET_TABLE_ and thus the offset may be calculated by a
2932 sethi, xor sequence. */
2933
2934 static bfd_boolean
2935 gdop_relative_offset_ok (struct bfd_link_info *info,
2936 struct elf_link_hash_entry *h,
2937 bfd_vma address ATTRIBUTE_UNUSED)
2938 {
2939 if (!SYMBOL_REFERENCES_LOCAL (info, h))
2940 return FALSE;
2941 /* If H is undefined, ADDRESS will be zero. We can't allow a
2942 relative offset to "zero" when producing PIEs or shared libs.
2943 Note that to get here with an undefined symbol it must also be
2944 hidden or internal visibility. */
2945 if (bfd_link_pic (info)
2946 && h != NULL
2947 && (h->root.type == bfd_link_hash_undefweak
2948 || h->root.type == bfd_link_hash_undefined))
2949 return FALSE;
2950 #ifdef BFD64
2951 return gdopoff (info, address) + ((bfd_vma) 1 << 32) < (bfd_vma) 2 << 32;
2952 #else
2953 return TRUE;
2954 #endif
2955 }
2956
2957 /* Relocate a SPARC ELF section. */
2958
2959 bfd_boolean
2960 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2961 struct bfd_link_info *info,
2962 bfd *input_bfd,
2963 asection *input_section,
2964 bfd_byte *contents,
2965 Elf_Internal_Rela *relocs,
2966 Elf_Internal_Sym *local_syms,
2967 asection **local_sections)
2968 {
2969 struct _bfd_sparc_elf_link_hash_table *htab;
2970 Elf_Internal_Shdr *symtab_hdr;
2971 struct elf_link_hash_entry **sym_hashes;
2972 bfd_vma *local_got_offsets;
2973 bfd_vma got_base;
2974 asection *sreloc;
2975 Elf_Internal_Rela *rel;
2976 Elf_Internal_Rela *relend;
2977 int num_relocs;
2978 bfd_boolean is_vxworks_tls;
2979
2980 htab = _bfd_sparc_elf_hash_table (info);
2981 BFD_ASSERT (htab != NULL);
2982 symtab_hdr = &elf_symtab_hdr (input_bfd);
2983 sym_hashes = elf_sym_hashes (input_bfd);
2984 local_got_offsets = elf_local_got_offsets (input_bfd);
2985
2986 if (elf_hash_table (info)->hgot == NULL)
2987 got_base = 0;
2988 else
2989 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2990
2991 sreloc = elf_section_data (input_section)->sreloc;
2992 /* We have to handle relocations in vxworks .tls_vars sections
2993 specially, because the dynamic loader is 'weird'. */
2994 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
2995 && !strcmp (input_section->output_section->name,
2996 ".tls_vars"));
2997
2998 rel = relocs;
2999 if (ABI_64_P (output_bfd))
3000 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
3001 else
3002 num_relocs = input_section->reloc_count;
3003 relend = relocs + num_relocs;
3004 for (; rel < relend; rel++)
3005 {
3006 int r_type, tls_type;
3007 reloc_howto_type *howto;
3008 unsigned long r_symndx;
3009 struct elf_link_hash_entry *h;
3010 Elf_Internal_Sym *sym;
3011 asection *sec;
3012 bfd_vma relocation, off;
3013 bfd_reloc_status_type r;
3014 bfd_boolean is_plt = FALSE;
3015 bfd_boolean unresolved_reloc;
3016
3017 r_type = SPARC_ELF_R_TYPE (rel->r_info);
3018 if (r_type == R_SPARC_GNU_VTINHERIT
3019 || r_type == R_SPARC_GNU_VTENTRY)
3020 continue;
3021
3022 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
3023 {
3024 bfd_set_error (bfd_error_bad_value);
3025 return FALSE;
3026 }
3027 howto = _bfd_sparc_elf_howto_table + r_type;
3028
3029 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
3030 h = NULL;
3031 sym = NULL;
3032 sec = NULL;
3033 unresolved_reloc = FALSE;
3034 if (r_symndx < symtab_hdr->sh_info)
3035 {
3036 sym = local_syms + r_symndx;
3037 sec = local_sections[r_symndx];
3038 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3039
3040 if (!bfd_link_relocatable (info)
3041 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3042 {
3043 /* Relocate against local STT_GNU_IFUNC symbol. */
3044 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3045 rel, FALSE);
3046 if (h == NULL)
3047 abort ();
3048
3049 /* Set STT_GNU_IFUNC symbol value. */
3050 h->root.u.def.value = sym->st_value;
3051 h->root.u.def.section = sec;
3052 }
3053 }
3054 else
3055 {
3056 bfd_boolean warned, ignored;
3057
3058 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3059 r_symndx, symtab_hdr, sym_hashes,
3060 h, sec, relocation,
3061 unresolved_reloc, warned, ignored);
3062 if (warned)
3063 {
3064 /* To avoid generating warning messages about truncated
3065 relocations, set the relocation's address to be the same as
3066 the start of this section. */
3067 if (input_section->output_section != NULL)
3068 relocation = input_section->output_section->vma;
3069 else
3070 relocation = 0;
3071 }
3072 }
3073
3074 if (sec != NULL && discarded_section (sec))
3075 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3076 rel, 1, relend, howto, 0, contents);
3077
3078 if (bfd_link_relocatable (info))
3079 continue;
3080
3081 if (h != NULL
3082 && h->type == STT_GNU_IFUNC
3083 && h->def_regular)
3084 {
3085 asection *plt_sec;
3086 const char *name;
3087
3088 if ((input_section->flags & SEC_ALLOC) == 0
3089 || h->plt.offset == (bfd_vma) -1)
3090 abort ();
3091
3092 plt_sec = htab->elf.splt;
3093 if (! plt_sec)
3094 plt_sec =htab->elf.iplt;
3095
3096 switch (r_type)
3097 {
3098 case R_SPARC_GOTDATA_OP:
3099 continue;
3100
3101 case R_SPARC_GOTDATA_OP_HIX22:
3102 case R_SPARC_GOTDATA_OP_LOX10:
3103 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3104 ? R_SPARC_GOT22
3105 : R_SPARC_GOT10);
3106 howto = _bfd_sparc_elf_howto_table + r_type;
3107 /* Fall through. */
3108
3109 case R_SPARC_GOT10:
3110 case R_SPARC_GOT13:
3111 case R_SPARC_GOT22:
3112 if (htab->elf.sgot == NULL)
3113 abort ();
3114 off = h->got.offset;
3115 if (off == (bfd_vma) -1)
3116 abort();
3117 relocation = htab->elf.sgot->output_offset + off - got_base;
3118 goto do_relocation;
3119
3120 case R_SPARC_WPLT30:
3121 case R_SPARC_WDISP30:
3122 relocation = (plt_sec->output_section->vma
3123 + plt_sec->output_offset + h->plt.offset);
3124 goto do_relocation;
3125
3126 case R_SPARC_32:
3127 case R_SPARC_64:
3128 if (bfd_link_pic (info) && h->non_got_ref)
3129 {
3130 Elf_Internal_Rela outrel;
3131 bfd_vma offset;
3132
3133 offset = _bfd_elf_section_offset (output_bfd, info,
3134 input_section,
3135 rel->r_offset);
3136 if (offset == (bfd_vma) -1
3137 || offset == (bfd_vma) -2)
3138 abort();
3139
3140 outrel.r_offset = (input_section->output_section->vma
3141 + input_section->output_offset
3142 + offset);
3143
3144 if (h->dynindx == -1
3145 || h->forced_local
3146 || bfd_link_executable (info))
3147 {
3148 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3149 0, R_SPARC_IRELATIVE);
3150 outrel.r_addend = relocation + rel->r_addend;
3151 }
3152 else
3153 {
3154 if (h->dynindx == -1)
3155 abort();
3156 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3157 outrel.r_addend = rel->r_addend;
3158 }
3159
3160 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3161 continue;
3162 }
3163
3164 relocation = (plt_sec->output_section->vma
3165 + plt_sec->output_offset + h->plt.offset);
3166 goto do_relocation;
3167
3168 case R_SPARC_HI22:
3169 case R_SPARC_LO10:
3170 /* We should only see such relocs in static links. */
3171 if (bfd_link_pic (info))
3172 abort();
3173 relocation = (plt_sec->output_section->vma
3174 + plt_sec->output_offset + h->plt.offset);
3175 goto do_relocation;
3176
3177 default:
3178 if (h->root.root.string)
3179 name = h->root.root.string;
3180 else
3181 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3182 NULL);
3183 _bfd_error_handler
3184 /* xgettext:c-format */
3185 (_("%B: relocation %s against STT_GNU_IFUNC "
3186 "symbol `%s' isn't handled by %s"), input_bfd,
3187 _bfd_sparc_elf_howto_table[r_type].name,
3188 name, __FUNCTION__);
3189 bfd_set_error (bfd_error_bad_value);
3190 return FALSE;
3191 }
3192 }
3193
3194 switch (r_type)
3195 {
3196 case R_SPARC_GOTDATA_OP_HIX22:
3197 case R_SPARC_GOTDATA_OP_LOX10:
3198 if (gdop_relative_offset_ok (info, h, relocation))
3199 {
3200 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3201 ? R_SPARC_GOTDATA_HIX22
3202 : R_SPARC_GOTDATA_LOX10);
3203 howto = _bfd_sparc_elf_howto_table + r_type;
3204 }
3205 break;
3206
3207 case R_SPARC_GOTDATA_OP:
3208 if (gdop_relative_offset_ok (info, h, relocation))
3209 {
3210 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3211
3212 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3213 relocation = 0x80000000 | (insn & 0x3e07c01f);
3214 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3215 }
3216 continue;
3217 }
3218
3219 switch (r_type)
3220 {
3221 case R_SPARC_GOTDATA_HIX22:
3222 case R_SPARC_GOTDATA_LOX10:
3223 relocation = gdopoff (info, relocation);
3224 break;
3225
3226 case R_SPARC_GOTDATA_OP_HIX22:
3227 case R_SPARC_GOTDATA_OP_LOX10:
3228 case R_SPARC_GOT10:
3229 case R_SPARC_GOT13:
3230 case R_SPARC_GOT22:
3231 /* Relocation is to the entry for this symbol in the global
3232 offset table. */
3233 if (htab->elf.sgot == NULL)
3234 abort ();
3235
3236 if (h != NULL)
3237 {
3238 bfd_boolean dyn;
3239
3240 off = h->got.offset;
3241 BFD_ASSERT (off != (bfd_vma) -1);
3242 dyn = elf_hash_table (info)->dynamic_sections_created;
3243
3244 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3245 bfd_link_pic (info),
3246 h)
3247 || (bfd_link_pic (info)
3248 && SYMBOL_REFERENCES_LOCAL (info, h)))
3249 {
3250 /* This is actually a static link, or it is a
3251 -Bsymbolic link and the symbol is defined
3252 locally, or the symbol was forced to be local
3253 because of a version file. We must initialize
3254 this entry in the global offset table. Since the
3255 offset must always be a multiple of 8 for 64-bit
3256 and 4 for 32-bit, we use the least significant bit
3257 to record whether we have initialized it already.
3258
3259 When doing a dynamic link, we create a .rela.got
3260 relocation entry to initialize the value. This
3261 is done in the finish_dynamic_symbol routine. */
3262 if ((off & 1) != 0)
3263 off &= ~1;
3264 else
3265 {
3266 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3267 htab->elf.sgot->contents + off);
3268 h->got.offset |= 1;
3269 }
3270 }
3271 else
3272 unresolved_reloc = FALSE;
3273 }
3274 else
3275 {
3276 BFD_ASSERT (local_got_offsets != NULL
3277 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3278
3279 off = local_got_offsets[r_symndx];
3280
3281 /* The offset must always be a multiple of 8 on 64-bit and
3282 4 on 32-bit. We use the least significant bit to record
3283 whether we have already processed this entry. */
3284 if ((off & 1) != 0)
3285 off &= ~1;
3286 else
3287 {
3288
3289 if (bfd_link_pic (info))
3290 {
3291 asection *s;
3292 Elf_Internal_Rela outrel;
3293
3294 /* We need to generate a R_SPARC_RELATIVE reloc
3295 for the dynamic linker. */
3296 s = htab->elf.srelgot;
3297 BFD_ASSERT (s != NULL);
3298
3299 outrel.r_offset = (htab->elf.sgot->output_section->vma
3300 + htab->elf.sgot->output_offset
3301 + off);
3302 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3303 0, R_SPARC_RELATIVE);
3304 outrel.r_addend = relocation;
3305 relocation = 0;
3306 sparc_elf_append_rela (output_bfd, s, &outrel);
3307 }
3308
3309 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3310 htab->elf.sgot->contents + off);
3311 local_got_offsets[r_symndx] |= 1;
3312 }
3313 }
3314 relocation = htab->elf.sgot->output_offset + off - got_base;
3315 break;
3316
3317 case R_SPARC_PLT32:
3318 case R_SPARC_PLT64:
3319 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3320 {
3321 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3322 goto r_sparc_plt32;
3323 }
3324 /* Fall through. */
3325
3326 case R_SPARC_WPLT30:
3327 case R_SPARC_HIPLT22:
3328 case R_SPARC_LOPLT10:
3329 case R_SPARC_PCPLT32:
3330 case R_SPARC_PCPLT22:
3331 case R_SPARC_PCPLT10:
3332 r_sparc_wplt30:
3333 /* Relocation is to the entry for this symbol in the
3334 procedure linkage table. */
3335
3336 if (! ABI_64_P (output_bfd))
3337 {
3338 /* The Solaris native assembler will generate a WPLT30 reloc
3339 for a local symbol if you assemble a call from one
3340 section to another when using -K pic. We treat it as
3341 WDISP30. */
3342 if (h == NULL)
3343 break;
3344 }
3345 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3346 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3347 break;
3348 else
3349 {
3350 BFD_ASSERT (h != NULL);
3351 }
3352
3353 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3354 {
3355 /* We didn't make a PLT entry for this symbol. This
3356 happens when statically linking PIC code, or when
3357 using -Bsymbolic. */
3358 break;
3359 }
3360
3361 relocation = (htab->elf.splt->output_section->vma
3362 + htab->elf.splt->output_offset
3363 + h->plt.offset);
3364 unresolved_reloc = FALSE;
3365 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3366 {
3367 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3368 is_plt = TRUE;
3369 goto r_sparc_plt32;
3370 }
3371 break;
3372
3373 case R_SPARC_PC10:
3374 case R_SPARC_PC22:
3375 case R_SPARC_PC_HH22:
3376 case R_SPARC_PC_HM10:
3377 case R_SPARC_PC_LM22:
3378 if (h != NULL
3379 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3380 break;
3381 /* Fall through. */
3382 case R_SPARC_DISP8:
3383 case R_SPARC_DISP16:
3384 case R_SPARC_DISP32:
3385 case R_SPARC_DISP64:
3386 case R_SPARC_WDISP30:
3387 case R_SPARC_WDISP22:
3388 case R_SPARC_WDISP19:
3389 case R_SPARC_WDISP16:
3390 case R_SPARC_WDISP10:
3391 case R_SPARC_8:
3392 case R_SPARC_16:
3393 case R_SPARC_32:
3394 case R_SPARC_HI22:
3395 case R_SPARC_22:
3396 case R_SPARC_13:
3397 case R_SPARC_LO10:
3398 case R_SPARC_UA16:
3399 case R_SPARC_UA32:
3400 case R_SPARC_10:
3401 case R_SPARC_11:
3402 case R_SPARC_64:
3403 case R_SPARC_OLO10:
3404 case R_SPARC_HH22:
3405 case R_SPARC_HM10:
3406 case R_SPARC_LM22:
3407 case R_SPARC_7:
3408 case R_SPARC_5:
3409 case R_SPARC_6:
3410 case R_SPARC_HIX22:
3411 case R_SPARC_LOX10:
3412 case R_SPARC_H44:
3413 case R_SPARC_M44:
3414 case R_SPARC_L44:
3415 case R_SPARC_H34:
3416 case R_SPARC_UA64:
3417 r_sparc_plt32:
3418 if ((input_section->flags & SEC_ALLOC) == 0
3419 || is_vxworks_tls)
3420 break;
3421
3422 if ((bfd_link_pic (info)
3423 && (h == NULL
3424 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3425 || h->root.type != bfd_link_hash_undefweak)
3426 && (! howto->pc_relative
3427 || !SYMBOL_CALLS_LOCAL (info, h)))
3428 || (!bfd_link_pic (info)
3429 && h != NULL
3430 && h->dynindx != -1
3431 && !h->non_got_ref
3432 && ((h->def_dynamic
3433 && !h->def_regular)
3434 || h->root.type == bfd_link_hash_undefweak
3435 || h->root.type == bfd_link_hash_undefined)))
3436 {
3437 Elf_Internal_Rela outrel;
3438 bfd_boolean skip, relocate = FALSE;
3439
3440 /* When generating a shared object, these relocations
3441 are copied into the output file to be resolved at run
3442 time. */
3443
3444 BFD_ASSERT (sreloc != NULL);
3445
3446 skip = FALSE;
3447
3448 outrel.r_offset =
3449 _bfd_elf_section_offset (output_bfd, info, input_section,
3450 rel->r_offset);
3451 if (outrel.r_offset == (bfd_vma) -1)
3452 skip = TRUE;
3453 else if (outrel.r_offset == (bfd_vma) -2)
3454 skip = TRUE, relocate = TRUE;
3455 outrel.r_offset += (input_section->output_section->vma
3456 + input_section->output_offset);
3457
3458 /* Optimize unaligned reloc usage now that we know where
3459 it finally resides. */
3460 switch (r_type)
3461 {
3462 case R_SPARC_16:
3463 if (outrel.r_offset & 1)
3464 r_type = R_SPARC_UA16;
3465 break;
3466 case R_SPARC_UA16:
3467 if (!(outrel.r_offset & 1))
3468 r_type = R_SPARC_16;
3469 break;
3470 case R_SPARC_32:
3471 if (outrel.r_offset & 3)
3472 r_type = R_SPARC_UA32;
3473 break;
3474 case R_SPARC_UA32:
3475 if (!(outrel.r_offset & 3))
3476 r_type = R_SPARC_32;
3477 break;
3478 case R_SPARC_64:
3479 if (outrel.r_offset & 7)
3480 r_type = R_SPARC_UA64;
3481 break;
3482 case R_SPARC_UA64:
3483 if (!(outrel.r_offset & 7))
3484 r_type = R_SPARC_64;
3485 break;
3486 case R_SPARC_DISP8:
3487 case R_SPARC_DISP16:
3488 case R_SPARC_DISP32:
3489 case R_SPARC_DISP64:
3490 /* If the symbol is not dynamic, we should not keep
3491 a dynamic relocation. But an .rela.* slot has been
3492 allocated for it, output R_SPARC_NONE.
3493 FIXME: Add code tracking needed dynamic relocs as
3494 e.g. i386 has. */
3495 if (h->dynindx == -1)
3496 skip = TRUE, relocate = TRUE;
3497 break;
3498 }
3499
3500 if (skip)
3501 memset (&outrel, 0, sizeof outrel);
3502 /* h->dynindx may be -1 if the symbol was marked to
3503 become local. */
3504 else if (h != NULL
3505 && h->dynindx != -1
3506 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3507 || !bfd_link_pic (info)
3508 || !SYMBOLIC_BIND (info, h)
3509 || !h->def_regular))
3510 {
3511 BFD_ASSERT (h->dynindx != -1);
3512 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3513 outrel.r_addend = rel->r_addend;
3514 }
3515 else
3516 {
3517 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3518 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3519 {
3520 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3521 0, R_SPARC_RELATIVE);
3522 outrel.r_addend = relocation + rel->r_addend;
3523 }
3524 else
3525 {
3526 long indx;
3527
3528 outrel.r_addend = relocation + rel->r_addend;
3529
3530 if (is_plt)
3531 sec = htab->elf.splt;
3532
3533 if (bfd_is_abs_section (sec))
3534 indx = 0;
3535 else if (sec == NULL || sec->owner == NULL)
3536 {
3537 bfd_set_error (bfd_error_bad_value);
3538 return FALSE;
3539 }
3540 else
3541 {
3542 asection *osec;
3543
3544 /* We are turning this relocation into one
3545 against a section symbol. It would be
3546 proper to subtract the symbol's value,
3547 osec->vma, from the emitted reloc addend,
3548 but ld.so expects buggy relocs. */
3549 osec = sec->output_section;
3550 indx = elf_section_data (osec)->dynindx;
3551
3552 if (indx == 0)
3553 {
3554 osec = htab->elf.text_index_section;
3555 indx = elf_section_data (osec)->dynindx;
3556 }
3557
3558 /* FIXME: we really should be able to link non-pic
3559 shared libraries. */
3560 if (indx == 0)
3561 {
3562 BFD_FAIL ();
3563 _bfd_error_handler
3564 (_("%B: probably compiled without -fPIC?"),
3565 input_bfd);
3566 bfd_set_error (bfd_error_bad_value);
3567 return FALSE;
3568 }
3569 }
3570
3571 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3572 r_type);
3573 }
3574 }
3575
3576 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3577
3578 /* This reloc will be computed at runtime, so there's no
3579 need to do anything now. */
3580 if (! relocate)
3581 continue;
3582 }
3583 break;
3584
3585 case R_SPARC_TLS_GD_HI22:
3586 if (! ABI_64_P (input_bfd)
3587 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3588 {
3589 /* R_SPARC_REV32 used the same reloc number as
3590 R_SPARC_TLS_GD_HI22. */
3591 r_type = R_SPARC_REV32;
3592 break;
3593 }
3594 /* Fall through */
3595
3596 case R_SPARC_TLS_GD_LO10:
3597 case R_SPARC_TLS_IE_HI22:
3598 case R_SPARC_TLS_IE_LO10:
3599 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3600 tls_type = GOT_UNKNOWN;
3601 if (h == NULL && local_got_offsets)
3602 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3603 else if (h != NULL)
3604 {
3605 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3606 if (!bfd_link_pic (info)
3607 && h->dynindx == -1
3608 && tls_type == GOT_TLS_IE)
3609 switch (SPARC_ELF_R_TYPE (rel->r_info))
3610 {
3611 case R_SPARC_TLS_GD_HI22:
3612 case R_SPARC_TLS_IE_HI22:
3613 r_type = R_SPARC_TLS_LE_HIX22;
3614 break;
3615 default:
3616 r_type = R_SPARC_TLS_LE_LOX10;
3617 break;
3618 }
3619 }
3620 if (tls_type == GOT_TLS_IE)
3621 switch (r_type)
3622 {
3623 case R_SPARC_TLS_GD_HI22:
3624 r_type = R_SPARC_TLS_IE_HI22;
3625 break;
3626 case R_SPARC_TLS_GD_LO10:
3627 r_type = R_SPARC_TLS_IE_LO10;
3628 break;
3629 }
3630
3631 if (r_type == R_SPARC_TLS_LE_HIX22)
3632 {
3633 relocation = tpoff (info, relocation);
3634 break;
3635 }
3636 if (r_type == R_SPARC_TLS_LE_LOX10)
3637 {
3638 /* Change add into xor. */
3639 relocation = tpoff (info, relocation);
3640 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3641 contents + rel->r_offset)
3642 | 0x80182000), contents + rel->r_offset);
3643 break;
3644 }
3645
3646 if (h != NULL)
3647 {
3648 off = h->got.offset;
3649 h->got.offset |= 1;
3650 }
3651 else
3652 {
3653 BFD_ASSERT (local_got_offsets != NULL);
3654 off = local_got_offsets[r_symndx];
3655 local_got_offsets[r_symndx] |= 1;
3656 }
3657
3658 r_sparc_tlsldm:
3659 if (htab->elf.sgot == NULL)
3660 abort ();
3661
3662 if ((off & 1) != 0)
3663 off &= ~1;
3664 else
3665 {
3666 Elf_Internal_Rela outrel;
3667 int dr_type, indx;
3668
3669 if (htab->elf.srelgot == NULL)
3670 abort ();
3671
3672 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3673 htab->elf.sgot->contents + off);
3674 outrel.r_offset = (htab->elf.sgot->output_section->vma
3675 + htab->elf.sgot->output_offset + off);
3676 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3677 if (r_type == R_SPARC_TLS_IE_HI22
3678 || r_type == R_SPARC_TLS_IE_LO10)
3679 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3680 else
3681 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3682 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3683 outrel.r_addend = relocation - dtpoff_base (info);
3684 else
3685 outrel.r_addend = 0;
3686 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3687 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3688
3689 if (r_type == R_SPARC_TLS_GD_HI22
3690 || r_type == R_SPARC_TLS_GD_LO10)
3691 {
3692 if (indx == 0)
3693 {
3694 BFD_ASSERT (! unresolved_reloc);
3695 SPARC_ELF_PUT_WORD (htab, output_bfd,
3696 relocation - dtpoff_base (info),
3697 (htab->elf.sgot->contents + off
3698 + SPARC_ELF_WORD_BYTES (htab)));
3699 }
3700 else
3701 {
3702 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3703 (htab->elf.sgot->contents + off
3704 + SPARC_ELF_WORD_BYTES (htab)));
3705 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3706 SPARC_ELF_DTPOFF_RELOC (htab));
3707 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3708 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3709 &outrel);
3710 }
3711 }
3712 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3713 {
3714 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3715 (htab->elf.sgot->contents + off
3716 + SPARC_ELF_WORD_BYTES (htab)));
3717 }
3718 }
3719
3720 if (off >= (bfd_vma) -2)
3721 abort ();
3722
3723 relocation = htab->elf.sgot->output_offset + off - got_base;
3724 unresolved_reloc = FALSE;
3725 howto = _bfd_sparc_elf_howto_table + r_type;
3726 break;
3727
3728 case R_SPARC_TLS_LDM_HI22:
3729 case R_SPARC_TLS_LDM_LO10:
3730 if (! bfd_link_pic (info))
3731 {
3732 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3733 continue;
3734 }
3735 off = htab->tls_ldm_got.offset;
3736 htab->tls_ldm_got.offset |= 1;
3737 goto r_sparc_tlsldm;
3738
3739 case R_SPARC_TLS_LDO_HIX22:
3740 case R_SPARC_TLS_LDO_LOX10:
3741 if (bfd_link_pic (info))
3742 {
3743 relocation -= dtpoff_base (info);
3744 break;
3745 }
3746
3747 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3748 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3749 /* Fall through. */
3750
3751 case R_SPARC_TLS_LE_HIX22:
3752 case R_SPARC_TLS_LE_LOX10:
3753 if (bfd_link_pic (info))
3754 {
3755 Elf_Internal_Rela outrel;
3756 bfd_boolean skip;
3757
3758 BFD_ASSERT (sreloc != NULL);
3759 skip = FALSE;
3760 outrel.r_offset =
3761 _bfd_elf_section_offset (output_bfd, info, input_section,
3762 rel->r_offset);
3763 if (outrel.r_offset == (bfd_vma) -1)
3764 skip = TRUE;
3765 else if (outrel.r_offset == (bfd_vma) -2)
3766 skip = TRUE;
3767 outrel.r_offset += (input_section->output_section->vma
3768 + input_section->output_offset);
3769 if (skip)
3770 memset (&outrel, 0, sizeof outrel);
3771 else
3772 {
3773 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3774 outrel.r_addend = relocation - dtpoff_base (info)
3775 + rel->r_addend;
3776 }
3777
3778 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3779 continue;
3780 }
3781 relocation = tpoff (info, relocation);
3782 break;
3783
3784 case R_SPARC_TLS_LDM_CALL:
3785 if (! bfd_link_pic (info))
3786 {
3787 /* mov %g0, %o0 */
3788 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3789 continue;
3790 }
3791 /* Fall through */
3792
3793 case R_SPARC_TLS_GD_CALL:
3794 tls_type = GOT_UNKNOWN;
3795 if (h == NULL && local_got_offsets)
3796 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3797 else if (h != NULL)
3798 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3799 if (! bfd_link_pic (info)
3800 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3801 {
3802 Elf_Internal_Rela *rel2;
3803 bfd_vma insn;
3804
3805 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3806 {
3807 /* GD -> LE */
3808 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3809 continue;
3810 }
3811
3812 /* GD -> IE */
3813 if (rel + 1 < relend
3814 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3815 && rel[1].r_offset == rel->r_offset + 4
3816 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3817 && (((insn = bfd_get_32 (input_bfd,
3818 contents + rel[1].r_offset))
3819 >> 25) & 0x1f) == 8)
3820 {
3821 /* We have
3822 call __tls_get_addr, %tgd_call(foo)
3823 add %reg1, %reg2, %o0, %tgd_add(foo)
3824 and change it into IE:
3825 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3826 add %g7, %o0, %o0, %tie_add(foo).
3827 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3828 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3829 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3830 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3831 contents + rel->r_offset);
3832 bfd_put_32 (output_bfd, 0x9001c008,
3833 contents + rel->r_offset + 4);
3834 rel++;
3835 continue;
3836 }
3837
3838 /* We cannot just overwrite the delay slot instruction,
3839 as it might be what puts the %o0 argument to
3840 __tls_get_addr into place. So we have to transpose
3841 the delay slot with the add we patch in. */
3842 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3843 bfd_put_32 (output_bfd, insn,
3844 contents + rel->r_offset);
3845 bfd_put_32 (output_bfd, 0x9001c008,
3846 contents + rel->r_offset + 4);
3847
3848 rel2 = rel;
3849 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3850 rel->r_offset + 4))
3851 != NULL)
3852 {
3853 /* If the instruction we moved has a relocation attached to
3854 it, adjust the offset so that it will apply to the correct
3855 instruction. */
3856 rel2->r_offset -= 4;
3857 }
3858 continue;
3859 }
3860
3861 h = (struct elf_link_hash_entry *)
3862 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3863 FALSE, TRUE);
3864 BFD_ASSERT (h != NULL);
3865 r_type = R_SPARC_WPLT30;
3866 howto = _bfd_sparc_elf_howto_table + r_type;
3867 goto r_sparc_wplt30;
3868
3869 case R_SPARC_TLS_GD_ADD:
3870 tls_type = GOT_UNKNOWN;
3871 if (h == NULL && local_got_offsets)
3872 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3873 else if (h != NULL)
3874 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3875 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE)
3876 {
3877 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3878 changed into IE:
3879 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3880 or LE:
3881 add %g7, %reg2, %reg3. */
3882 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3883 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info))
3884 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3885 else
3886 relocation = (insn & ~0x7c000) | 0x1c000;
3887 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3888 }
3889 continue;
3890
3891 case R_SPARC_TLS_LDM_ADD:
3892 if (! bfd_link_pic (info))
3893 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3894 continue;
3895
3896 case R_SPARC_TLS_LDO_ADD:
3897 if (! bfd_link_pic (info))
3898 {
3899 /* Change rs1 into %g7. */
3900 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3901 insn = (insn & ~0x7c000) | 0x1c000;
3902 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3903 }
3904 continue;
3905
3906 case R_SPARC_TLS_IE_LD:
3907 case R_SPARC_TLS_IE_LDX:
3908 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3909 {
3910 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3911 int rs2 = insn & 0x1f;
3912 int rd = (insn >> 25) & 0x1f;
3913
3914 if (rs2 == rd)
3915 relocation = SPARC_NOP;
3916 else
3917 relocation = 0x80100000 | (insn & 0x3e00001f);
3918 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3919 }
3920 continue;
3921
3922 case R_SPARC_TLS_IE_ADD:
3923 /* Totally useless relocation. */
3924 continue;
3925
3926 case R_SPARC_TLS_DTPOFF32:
3927 case R_SPARC_TLS_DTPOFF64:
3928 relocation -= dtpoff_base (info);
3929 break;
3930
3931 default:
3932 break;
3933 }
3934
3935 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3936 because such sections are not SEC_ALLOC and thus ld.so will
3937 not process them. */
3938 if (unresolved_reloc
3939 && !((input_section->flags & SEC_DEBUGGING) != 0
3940 && h->def_dynamic)
3941 && _bfd_elf_section_offset (output_bfd, info, input_section,
3942 rel->r_offset) != (bfd_vma) -1)
3943 _bfd_error_handler
3944 /* xgettext:c-format */
3945 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3946 input_bfd,
3947 input_section,
3948 (long) rel->r_offset,
3949 howto->name,
3950 h->root.root.string);
3951
3952 r = bfd_reloc_continue;
3953 if (r_type == R_SPARC_OLO10)
3954 {
3955 bfd_vma x;
3956
3957 if (! ABI_64_P (output_bfd))
3958 abort ();
3959
3960 relocation += rel->r_addend;
3961 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3962
3963 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3964 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3965 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3966
3967 r = bfd_check_overflow (howto->complain_on_overflow,
3968 howto->bitsize, howto->rightshift,
3969 bfd_arch_bits_per_address (input_bfd),
3970 relocation);
3971 }
3972 else if (r_type == R_SPARC_WDISP16)
3973 {
3974 bfd_vma x;
3975
3976 relocation += rel->r_addend;
3977 relocation -= (input_section->output_section->vma
3978 + input_section->output_offset);
3979 relocation -= rel->r_offset;
3980
3981 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3982 x |= ((((relocation >> 2) & 0xc000) << 6)
3983 | ((relocation >> 2) & 0x3fff));
3984 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3985
3986 r = bfd_check_overflow (howto->complain_on_overflow,
3987 howto->bitsize, howto->rightshift,
3988 bfd_arch_bits_per_address (input_bfd),
3989 relocation);
3990 }
3991 else if (r_type == R_SPARC_WDISP10)
3992 {
3993 bfd_vma x;
3994
3995 relocation += rel->r_addend;
3996 relocation -= (input_section->output_section->vma
3997 + input_section->output_offset);
3998 relocation -= rel->r_offset;
3999
4000 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4001 x |= ((((relocation >> 2) & 0x300) << 11)
4002 | (((relocation >> 2) & 0xff) << 5));
4003 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4004
4005 r = bfd_check_overflow (howto->complain_on_overflow,
4006 howto->bitsize, howto->rightshift,
4007 bfd_arch_bits_per_address (input_bfd),
4008 relocation);
4009 }
4010 else if (r_type == R_SPARC_REV32)
4011 {
4012 bfd_vma x;
4013
4014 relocation = relocation + rel->r_addend;
4015
4016 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4017 x = x + relocation;
4018 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
4019 r = bfd_reloc_ok;
4020 }
4021 else if (r_type == R_SPARC_TLS_LDO_HIX22
4022 || r_type == R_SPARC_TLS_LE_HIX22)
4023 {
4024 bfd_vma x;
4025
4026 relocation += rel->r_addend;
4027 if (r_type == R_SPARC_TLS_LE_HIX22)
4028 relocation ^= MINUS_ONE;
4029
4030 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4031 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4032 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4033 r = bfd_reloc_ok;
4034 }
4035 else if (r_type == R_SPARC_TLS_LDO_LOX10
4036 || r_type == R_SPARC_TLS_LE_LOX10)
4037 {
4038 bfd_vma x;
4039
4040 relocation += rel->r_addend;
4041 relocation &= 0x3ff;
4042 if (r_type == R_SPARC_TLS_LE_LOX10)
4043 relocation |= 0x1c00;
4044
4045 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4046 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4047 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4048
4049 r = bfd_reloc_ok;
4050 }
4051 else if (r_type == R_SPARC_HIX22
4052 || r_type == R_SPARC_GOTDATA_HIX22
4053 || r_type == R_SPARC_GOTDATA_OP_HIX22)
4054 {
4055 bfd_vma x;
4056
4057 relocation += rel->r_addend;
4058 if (r_type == R_SPARC_HIX22
4059 || (bfd_signed_vma) relocation < 0)
4060 relocation = relocation ^ MINUS_ONE;
4061
4062 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4063 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4064 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4065
4066 r = bfd_check_overflow (howto->complain_on_overflow,
4067 howto->bitsize, howto->rightshift,
4068 bfd_arch_bits_per_address (input_bfd),
4069 relocation);
4070 }
4071 else if (r_type == R_SPARC_LOX10
4072 || r_type == R_SPARC_GOTDATA_LOX10
4073 || r_type == R_SPARC_GOTDATA_OP_LOX10)
4074 {
4075 bfd_vma x;
4076
4077 relocation += rel->r_addend;
4078 if (r_type == R_SPARC_LOX10
4079 || (bfd_signed_vma) relocation < 0)
4080 relocation = (relocation & 0x3ff) | 0x1c00;
4081 else
4082 relocation = (relocation & 0x3ff);
4083
4084 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4085 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4086 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4087
4088 r = bfd_reloc_ok;
4089 }
4090 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4091 && sec_do_relax (input_section)
4092 && rel->r_offset + 4 < input_section->size)
4093 {
4094 #define G0 0
4095 #define O7 15
4096 #define XCC (2 << 20)
4097 #define COND(x) (((x)&0xf)<<25)
4098 #define CONDA COND(0x8)
4099 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4100 #define INSN_BA (F2(0,2) | CONDA)
4101 #define INSN_OR F3(2, 0x2, 0)
4102 #define INSN_NOP F2(0,4)
4103
4104 bfd_vma x, y;
4105
4106 /* If the instruction is a call with either:
4107 restore
4108 arithmetic instruction with rd == %o7
4109 where rs1 != %o7 and rs2 if it is register != %o7
4110 then we can optimize if the call destination is near
4111 by changing the call into a branch always. */
4112 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4113 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4114 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4115 {
4116 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4117 || ((y & OP3(0x28)) == 0 /* arithmetic */
4118 && (y & RD(~0)) == RD(O7)))
4119 && (y & RS1(~0)) != RS1(O7)
4120 && ((y & F3I(~0))
4121 || (y & RS2(~0)) != RS2(O7)))
4122 {
4123 bfd_vma reloc;
4124
4125 reloc = relocation + rel->r_addend - rel->r_offset;
4126 reloc -= (input_section->output_section->vma
4127 + input_section->output_offset);
4128
4129 /* Ensure the branch fits into simm22. */
4130 if ((reloc & 3) == 0
4131 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4132 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4133 {
4134 reloc >>= 2;
4135
4136 /* Check whether it fits into simm19. */
4137 if (((reloc & 0x3c0000) == 0
4138 || (reloc & 0x3c0000) == 0x3c0000)
4139 && (ABI_64_P (output_bfd)
4140 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4141 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4142 else
4143 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4144 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4145 r = bfd_reloc_ok;
4146 if (rel->r_offset >= 4
4147 && (y & (0xffffffff ^ RS1(~0)))
4148 == (INSN_OR | RD(O7) | RS2(G0)))
4149 {
4150 bfd_vma z;
4151 unsigned int reg;
4152
4153 z = bfd_get_32 (input_bfd,
4154 contents + rel->r_offset - 4);
4155 if ((z & (0xffffffff ^ RD(~0)))
4156 != (INSN_OR | RS1(O7) | RS2(G0)))
4157 continue;
4158
4159 /* The sequence was
4160 or %o7, %g0, %rN
4161 call foo
4162 or %rN, %g0, %o7
4163
4164 If call foo was replaced with ba, replace
4165 or %rN, %g0, %o7 with nop. */
4166
4167 reg = (y & RS1(~0)) >> 14;
4168 if (reg != ((z & RD(~0)) >> 25)
4169 || reg == G0 || reg == O7)
4170 continue;
4171
4172 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4173 contents + rel->r_offset + 4);
4174 }
4175
4176 }
4177 }
4178 }
4179 }
4180
4181 if (r == bfd_reloc_continue)
4182 {
4183 do_relocation:
4184 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4185 contents, rel->r_offset,
4186 relocation, rel->r_addend);
4187 }
4188 if (r != bfd_reloc_ok)
4189 {
4190 switch (r)
4191 {
4192 default:
4193 case bfd_reloc_outofrange:
4194 abort ();
4195 case bfd_reloc_overflow:
4196 {
4197 const char *name;
4198
4199 /* The Solaris native linker silently disregards overflows.
4200 We don't, but this breaks stabs debugging info, whose
4201 relocations are only 32-bits wide. Ignore overflows in
4202 this case and also for discarded entries. */
4203 if ((r_type == R_SPARC_32
4204 || r_type == R_SPARC_UA32
4205 || r_type == R_SPARC_DISP32)
4206 && (((input_section->flags & SEC_DEBUGGING) != 0
4207 && strcmp (bfd_section_name (input_bfd,
4208 input_section),
4209 ".stab") == 0)
4210 || _bfd_elf_section_offset (output_bfd, info,
4211 input_section,
4212 rel->r_offset)
4213 == (bfd_vma)-1))
4214 break;
4215
4216 if (h != NULL)
4217 {
4218 /* Assume this is a call protected by other code that
4219 detect the symbol is undefined. If this is the case,
4220 we can safely ignore the overflow. If not, the
4221 program is hosed anyway, and a little warning isn't
4222 going to help. */
4223 if (h->root.type == bfd_link_hash_undefweak
4224 && howto->pc_relative)
4225 break;
4226
4227 name = NULL;
4228 }
4229 else
4230 {
4231 name = bfd_elf_string_from_elf_section (input_bfd,
4232 symtab_hdr->sh_link,
4233 sym->st_name);
4234 if (name == NULL)
4235 return FALSE;
4236 if (*name == '\0')
4237 name = bfd_section_name (input_bfd, sec);
4238 }
4239 (*info->callbacks->reloc_overflow)
4240 (info, (h ? &h->root : NULL), name, howto->name,
4241 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4242 }
4243 break;
4244 }
4245 }
4246 }
4247
4248 return TRUE;
4249 }
4250
4251 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4252 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4253 is the offset of the associated .got.plt entry from
4254 _GLOBAL_OFFSET_TABLE_. */
4255
4256 static void
4257 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4258 bfd_vma plt_offset, bfd_vma plt_index,
4259 bfd_vma got_offset)
4260 {
4261 bfd_vma got_base;
4262 const bfd_vma *plt_entry;
4263 struct _bfd_sparc_elf_link_hash_table *htab;
4264 bfd_byte *loc;
4265 Elf_Internal_Rela rela;
4266
4267 htab = _bfd_sparc_elf_hash_table (info);
4268 BFD_ASSERT (htab != NULL);
4269
4270 if (bfd_link_pic (info))
4271 {
4272 plt_entry = sparc_vxworks_shared_plt_entry;
4273 got_base = 0;
4274 }
4275 else
4276 {
4277 plt_entry = sparc_vxworks_exec_plt_entry;
4278 got_base = (htab->elf.hgot->root.u.def.value
4279 + htab->elf.hgot->root.u.def.section->output_offset
4280 + htab->elf.hgot->root.u.def.section->output_section->vma);
4281 }
4282
4283 /* Fill in the entry in the procedure linkage table. */
4284 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4285 htab->elf.splt->contents + plt_offset);
4286 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4287 htab->elf.splt->contents + plt_offset + 4);
4288 bfd_put_32 (output_bfd, plt_entry[2],
4289 htab->elf.splt->contents + plt_offset + 8);
4290 bfd_put_32 (output_bfd, plt_entry[3],
4291 htab->elf.splt->contents + plt_offset + 12);
4292 bfd_put_32 (output_bfd, plt_entry[4],
4293 htab->elf.splt->contents + plt_offset + 16);
4294 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4295 htab->elf.splt->contents + plt_offset + 20);
4296 /* PC-relative displacement for a branch to the start of
4297 the PLT section. */
4298 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4299 & 0x003fffff),
4300 htab->elf.splt->contents + plt_offset + 24);
4301 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4302 htab->elf.splt->contents + plt_offset + 28);
4303
4304 /* Fill in the .got.plt entry, pointing initially at the
4305 second half of the PLT entry. */
4306 BFD_ASSERT (htab->elf.sgotplt != NULL);
4307 bfd_put_32 (output_bfd,
4308 htab->elf.splt->output_section->vma
4309 + htab->elf.splt->output_offset
4310 + plt_offset + 20,
4311 htab->elf.sgotplt->contents + got_offset);
4312
4313 /* Add relocations to .rela.plt.unloaded. */
4314 if (!bfd_link_pic (info))
4315 {
4316 loc = (htab->srelplt2->contents
4317 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4318
4319 /* Relocate the initial sethi. */
4320 rela.r_offset = (htab->elf.splt->output_section->vma
4321 + htab->elf.splt->output_offset
4322 + plt_offset);
4323 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4324 rela.r_addend = got_offset;
4325 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4326 loc += sizeof (Elf32_External_Rela);
4327
4328 /* Likewise the following or. */
4329 rela.r_offset += 4;
4330 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4331 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4332 loc += sizeof (Elf32_External_Rela);
4333
4334 /* Relocate the .got.plt entry. */
4335 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4336 + htab->elf.sgotplt->output_offset
4337 + got_offset);
4338 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4339 rela.r_addend = plt_offset + 20;
4340 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4341 }
4342 }
4343
4344 /* Finish up dynamic symbol handling. We set the contents of various
4345 dynamic sections here. */
4346
4347 bfd_boolean
4348 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4349 struct bfd_link_info *info,
4350 struct elf_link_hash_entry *h,
4351 Elf_Internal_Sym *sym)
4352 {
4353 struct _bfd_sparc_elf_link_hash_table *htab;
4354 const struct elf_backend_data *bed;
4355
4356 htab = _bfd_sparc_elf_hash_table (info);
4357 BFD_ASSERT (htab != NULL);
4358 bed = get_elf_backend_data (output_bfd);
4359
4360 if (h->plt.offset != (bfd_vma) -1)
4361 {
4362 asection *splt;
4363 asection *srela;
4364 Elf_Internal_Rela rela;
4365 bfd_byte *loc;
4366 bfd_vma r_offset, got_offset;
4367 int rela_index;
4368
4369 /* When building a static executable, use .iplt and
4370 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4371 if (htab->elf.splt != NULL)
4372 {
4373 splt = htab->elf.splt;
4374 srela = htab->elf.srelplt;
4375 }
4376 else
4377 {
4378 splt = htab->elf.iplt;
4379 srela = htab->elf.irelplt;
4380 }
4381
4382 if (splt == NULL || srela == NULL)
4383 abort ();
4384
4385 /* Fill in the entry in the .rela.plt section. */
4386 if (htab->is_vxworks)
4387 {
4388 /* Work out the index of this PLT entry. */
4389 rela_index = ((h->plt.offset - htab->plt_header_size)
4390 / htab->plt_entry_size);
4391
4392 /* Calculate the offset of the associated .got.plt entry.
4393 The first three entries are reserved. */
4394 got_offset = (rela_index + 3) * 4;
4395
4396 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4397 rela_index, got_offset);
4398
4399
4400 /* On VxWorks, the relocation points to the .got.plt entry,
4401 not the .plt entry. */
4402 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4403 + htab->elf.sgotplt->output_offset
4404 + got_offset);
4405 rela.r_addend = 0;
4406 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4407 R_SPARC_JMP_SLOT);
4408 }
4409 else
4410 {
4411 bfd_boolean ifunc = FALSE;
4412
4413 /* Fill in the entry in the procedure linkage table. */
4414 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4415 h->plt.offset, splt->size,
4416 &r_offset);
4417
4418 if (h == NULL
4419 || h->dynindx == -1
4420 || ((bfd_link_executable (info)
4421 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4422 && h->def_regular
4423 && h->type == STT_GNU_IFUNC))
4424 {
4425 ifunc = TRUE;
4426 BFD_ASSERT (h == NULL
4427 || (h->type == STT_GNU_IFUNC
4428 && h->def_regular
4429 && (h->root.type == bfd_link_hash_defined
4430 || h->root.type == bfd_link_hash_defweak)));
4431 }
4432
4433 rela.r_offset = r_offset
4434 + (splt->output_section->vma + splt->output_offset);
4435 if (ABI_64_P (output_bfd)
4436 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4437 {
4438 if (ifunc)
4439 {
4440 rela.r_addend = (h->root.u.def.section->output_section->vma
4441 + h->root.u.def.section->output_offset
4442 + h->root.u.def.value);
4443 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4444 R_SPARC_IRELATIVE);
4445 }
4446 else
4447 {
4448 rela.r_addend = (-(h->plt.offset + 4)
4449 - splt->output_section->vma
4450 - splt->output_offset);
4451 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4452 R_SPARC_JMP_SLOT);
4453 }
4454 }
4455 else
4456 {
4457 if (ifunc)
4458 {
4459 rela.r_addend = (h->root.u.def.section->output_section->vma
4460 + h->root.u.def.section->output_offset
4461 + h->root.u.def.value);
4462 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4463 R_SPARC_JMP_IREL);
4464 }
4465 else
4466 {
4467 rela.r_addend = 0;
4468 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4469 R_SPARC_JMP_SLOT);
4470 }
4471 }
4472 }
4473
4474 /* Adjust for the first 4 reserved elements in the .plt section
4475 when setting the offset in the .rela.plt section.
4476 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4477 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4478
4479 loc = srela->contents;
4480 loc += rela_index * bed->s->sizeof_rela;
4481 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4482
4483 if (!h->def_regular)
4484 {
4485 /* Mark the symbol as undefined, rather than as defined in
4486 the .plt section. Leave the value alone. */
4487 sym->st_shndx = SHN_UNDEF;
4488 /* If the symbol is weak, we do need to clear the value.
4489 Otherwise, the PLT entry would provide a definition for
4490 the symbol even if the symbol wasn't defined anywhere,
4491 and so the symbol would never be NULL. */
4492 if (!h->ref_regular_nonweak)
4493 sym->st_value = 0;
4494 }
4495 }
4496
4497 if (h->got.offset != (bfd_vma) -1
4498 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4499 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4500 {
4501 asection *sgot;
4502 asection *srela;
4503 Elf_Internal_Rela rela;
4504
4505 /* This symbol has an entry in the GOT. Set it up. */
4506
4507 sgot = htab->elf.sgot;
4508 srela = htab->elf.srelgot;
4509 BFD_ASSERT (sgot != NULL && srela != NULL);
4510
4511 rela.r_offset = (sgot->output_section->vma
4512 + sgot->output_offset
4513 + (h->got.offset &~ (bfd_vma) 1));
4514
4515 /* If this is a -Bsymbolic link, and the symbol is defined
4516 locally, we just want to emit a RELATIVE reloc. Likewise if
4517 the symbol was forced to be local because of a version file.
4518 The entry in the global offset table will already have been
4519 initialized in the relocate_section function. */
4520 if (! bfd_link_pic (info)
4521 && h->type == STT_GNU_IFUNC
4522 && h->def_regular)
4523 {
4524 asection *plt;
4525
4526 /* We load the GOT entry with the PLT entry. */
4527 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4528 SPARC_ELF_PUT_WORD (htab, output_bfd,
4529 (plt->output_section->vma
4530 + plt->output_offset + h->plt.offset),
4531 htab->elf.sgot->contents
4532 + (h->got.offset & ~(bfd_vma) 1));
4533 return TRUE;
4534 }
4535 else if (bfd_link_pic (info)
4536 && SYMBOL_REFERENCES_LOCAL (info, h))
4537 {
4538 asection *sec = h->root.u.def.section;
4539 if (h->type == STT_GNU_IFUNC)
4540 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4541 else
4542 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4543 rela.r_addend = (h->root.u.def.value
4544 + sec->output_section->vma
4545 + sec->output_offset);
4546 }
4547 else
4548 {
4549 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4550 rela.r_addend = 0;
4551 }
4552
4553 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4554 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4555 sparc_elf_append_rela (output_bfd, srela, &rela);
4556 }
4557
4558 if (h->needs_copy)
4559 {
4560 asection *s;
4561 Elf_Internal_Rela rela;
4562
4563 /* This symbols needs a copy reloc. Set it up. */
4564 BFD_ASSERT (h->dynindx != -1);
4565
4566 rela.r_offset = (h->root.u.def.value
4567 + h->root.u.def.section->output_section->vma
4568 + h->root.u.def.section->output_offset);
4569 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4570 rela.r_addend = 0;
4571 if (h->root.u.def.section == htab->elf.sdynrelro)
4572 s = htab->elf.sreldynrelro;
4573 else
4574 s = htab->elf.srelbss;
4575 sparc_elf_append_rela (output_bfd, s, &rela);
4576 }
4577
4578 /* Mark some specially defined symbols as absolute. On VxWorks,
4579 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4580 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4581 if (sym != NULL
4582 && (h == htab->elf.hdynamic
4583 || (!htab->is_vxworks
4584 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4585 sym->st_shndx = SHN_ABS;
4586
4587 return TRUE;
4588 }
4589
4590 /* Finish up the dynamic sections. */
4591
4592 static bfd_boolean
4593 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4594 bfd *dynobj, asection *sdyn,
4595 asection *splt ATTRIBUTE_UNUSED)
4596 {
4597 struct _bfd_sparc_elf_link_hash_table *htab;
4598 const struct elf_backend_data *bed;
4599 bfd_byte *dyncon, *dynconend;
4600 size_t dynsize;
4601 int stt_regidx = -1;
4602 bfd_boolean abi_64_p;
4603
4604 htab = _bfd_sparc_elf_hash_table (info);
4605 BFD_ASSERT (htab != NULL);
4606 bed = get_elf_backend_data (output_bfd);
4607 dynsize = bed->s->sizeof_dyn;
4608 dynconend = sdyn->contents + sdyn->size;
4609 abi_64_p = ABI_64_P (output_bfd);
4610 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4611 {
4612 Elf_Internal_Dyn dyn;
4613 bfd_boolean size;
4614
4615 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4616
4617 if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4618 {
4619 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4620 not to the start of the PLT. */
4621 if (htab->elf.sgotplt)
4622 {
4623 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4624 + htab->elf.sgotplt->output_offset);
4625 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4626 }
4627 }
4628 else if (htab->is_vxworks
4629 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4630 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4631 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4632 {
4633 if (stt_regidx == -1)
4634 {
4635 stt_regidx =
4636 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4637 if (stt_regidx == -1)
4638 return FALSE;
4639 }
4640 dyn.d_un.d_val = stt_regidx++;
4641 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4642 }
4643 else
4644 {
4645 asection *s;
4646
4647 switch (dyn.d_tag)
4648 {
4649 case DT_PLTGOT:
4650 s = htab->elf.splt;
4651 size = FALSE;
4652 break;
4653 case DT_PLTRELSZ:
4654 s = htab->elf.srelplt;
4655 size = TRUE;
4656 break;
4657 case DT_JMPREL:
4658 s = htab->elf.srelplt;
4659 size = FALSE;
4660 break;
4661 default:
4662 continue;
4663 }
4664
4665 if (s == NULL)
4666 dyn.d_un.d_val = 0;
4667 else
4668 {
4669 if (!size)
4670 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4671 else
4672 dyn.d_un.d_val = s->size;
4673 }
4674 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4675 }
4676 }
4677 return TRUE;
4678 }
4679
4680 /* Install the first PLT entry in a VxWorks executable and make sure that
4681 .rela.plt.unloaded relocations have the correct symbol indexes. */
4682
4683 static void
4684 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4685 {
4686 struct _bfd_sparc_elf_link_hash_table *htab;
4687 Elf_Internal_Rela rela;
4688 bfd_vma got_base;
4689 bfd_byte *loc;
4690
4691 htab = _bfd_sparc_elf_hash_table (info);
4692 BFD_ASSERT (htab != NULL);
4693
4694 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4695 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4696 + htab->elf.hgot->root.u.def.section->output_offset
4697 + htab->elf.hgot->root.u.def.value);
4698
4699 /* Install the initial PLT entry. */
4700 bfd_put_32 (output_bfd,
4701 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4702 htab->elf.splt->contents);
4703 bfd_put_32 (output_bfd,
4704 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4705 htab->elf.splt->contents + 4);
4706 bfd_put_32 (output_bfd,
4707 sparc_vxworks_exec_plt0_entry[2],
4708 htab->elf.splt->contents + 8);
4709 bfd_put_32 (output_bfd,
4710 sparc_vxworks_exec_plt0_entry[3],
4711 htab->elf.splt->contents + 12);
4712 bfd_put_32 (output_bfd,
4713 sparc_vxworks_exec_plt0_entry[4],
4714 htab->elf.splt->contents + 16);
4715
4716 loc = htab->srelplt2->contents;
4717
4718 /* Add an unloaded relocation for the initial entry's "sethi". */
4719 rela.r_offset = (htab->elf.splt->output_section->vma
4720 + htab->elf.splt->output_offset);
4721 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4722 rela.r_addend = 8;
4723 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4724 loc += sizeof (Elf32_External_Rela);
4725
4726 /* Likewise the following "or". */
4727 rela.r_offset += 4;
4728 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4729 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4730 loc += sizeof (Elf32_External_Rela);
4731
4732 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4733 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4734 in which symbols were output. */
4735 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4736 {
4737 Elf_Internal_Rela rel;
4738
4739 /* The entry's initial "sethi" (against _G_O_T_). */
4740 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4741 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4742 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4743 loc += sizeof (Elf32_External_Rela);
4744
4745 /* The following "or" (also against _G_O_T_). */
4746 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4747 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4748 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4749 loc += sizeof (Elf32_External_Rela);
4750
4751 /* The .got.plt entry (against _P_L_T_). */
4752 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4753 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4754 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4755 loc += sizeof (Elf32_External_Rela);
4756 }
4757 }
4758
4759 /* Install the first PLT entry in a VxWorks shared object. */
4760
4761 static void
4762 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4763 {
4764 struct _bfd_sparc_elf_link_hash_table *htab;
4765 unsigned int i;
4766
4767 htab = _bfd_sparc_elf_hash_table (info);
4768 BFD_ASSERT (htab != NULL);
4769
4770 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4771 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4772 htab->elf.splt->contents + i * 4);
4773 }
4774
4775 /* Finish up local dynamic symbol handling. We set the contents of
4776 various dynamic sections here. */
4777
4778 static bfd_boolean
4779 finish_local_dynamic_symbol (void **slot, void *inf)
4780 {
4781 struct elf_link_hash_entry *h
4782 = (struct elf_link_hash_entry *) *slot;
4783 struct bfd_link_info *info
4784 = (struct bfd_link_info *) inf;
4785
4786 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4787 h, NULL);
4788 }
4789
4790 bfd_boolean
4791 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4792 {
4793 bfd *dynobj;
4794 asection *sdyn;
4795 struct _bfd_sparc_elf_link_hash_table *htab;
4796
4797 htab = _bfd_sparc_elf_hash_table (info);
4798 BFD_ASSERT (htab != NULL);
4799 dynobj = htab->elf.dynobj;
4800
4801 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4802
4803 if (elf_hash_table (info)->dynamic_sections_created)
4804 {
4805 asection *splt;
4806
4807 splt = htab->elf.splt;
4808 BFD_ASSERT (splt != NULL && sdyn != NULL);
4809
4810 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4811 return FALSE;
4812
4813 /* Initialize the contents of the .plt section. */
4814 if (splt->size > 0)
4815 {
4816 if (htab->is_vxworks)
4817 {
4818 if (bfd_link_pic (info))
4819 sparc_vxworks_finish_shared_plt (output_bfd, info);
4820 else
4821 sparc_vxworks_finish_exec_plt (output_bfd, info);
4822 }
4823 else
4824 {
4825 memset (splt->contents, 0, htab->plt_header_size);
4826 if (!ABI_64_P (output_bfd))
4827 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4828 splt->contents + splt->size - 4);
4829 }
4830 }
4831
4832 if (elf_section_data (splt->output_section) != NULL)
4833 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4834 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4835 ? 0 : htab->plt_entry_size);
4836 }
4837
4838 /* Set the first entry in the global offset table to the address of
4839 the dynamic section. */
4840 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4841 {
4842 bfd_vma val = (sdyn ?
4843 sdyn->output_section->vma + sdyn->output_offset :
4844 0);
4845
4846 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4847 }
4848
4849 if (htab->elf.sgot)
4850 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4851 SPARC_ELF_WORD_BYTES (htab);
4852
4853 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4854 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4855
4856 return TRUE;
4857 }
4858
4859 \f
4860 /* Set the right machine number for a SPARC ELF file. */
4861
4862 bfd_boolean
4863 _bfd_sparc_elf_object_p (bfd *abfd)
4864 {
4865 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4866 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4867 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4868
4869 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4870 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4871 | ELF_SPARC_HWCAP_VIS3
4872 | ELF_SPARC_HWCAP_HPC);
4873 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4874 | ELF_SPARC_HWCAP_DES
4875 | ELF_SPARC_HWCAP_KASUMI
4876 | ELF_SPARC_HWCAP_CAMELLIA
4877 | ELF_SPARC_HWCAP_MD5
4878 | ELF_SPARC_HWCAP_SHA1
4879 | ELF_SPARC_HWCAP_SHA256
4880 | ELF_SPARC_HWCAP_SHA512
4881 | ELF_SPARC_HWCAP_MPMUL
4882 | ELF_SPARC_HWCAP_MONT
4883 | ELF_SPARC_HWCAP_CRC32C
4884 | ELF_SPARC_HWCAP_CBCOND
4885 | ELF_SPARC_HWCAP_PAUSE);
4886 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4887 | ELF_SPARC_HWCAP_IMA);
4888 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4889 | ELF_SPARC_HWCAP2_MWAIT
4890 | ELF_SPARC_HWCAP2_XMPMUL
4891 | ELF_SPARC_HWCAP2_XMONT);
4892
4893 if (ABI_64_P (abfd))
4894 {
4895 unsigned long mach = bfd_mach_sparc_v9;
4896
4897 if (hwcaps2->i & v9m_hwcaps2_mask)
4898 mach = bfd_mach_sparc_v9m;
4899 else if (hwcaps->i & v9v_hwcaps_mask)
4900 mach = bfd_mach_sparc_v9v;
4901 else if (hwcaps->i & v9e_hwcaps_mask)
4902 mach = bfd_mach_sparc_v9e;
4903 else if (hwcaps->i & v9d_hwcaps_mask)
4904 mach = bfd_mach_sparc_v9d;
4905 else if (hwcaps->i & v9c_hwcaps_mask)
4906 mach = bfd_mach_sparc_v9c;
4907 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4908 mach = bfd_mach_sparc_v9b;
4909 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4910 mach = bfd_mach_sparc_v9a;
4911 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4912 }
4913 else
4914 {
4915 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4916 {
4917 if (hwcaps2->i & v9m_hwcaps2_mask)
4918 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4919 bfd_mach_sparc_v8plusm);
4920 else if (hwcaps->i & v9v_hwcaps_mask)
4921 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4922 bfd_mach_sparc_v8plusv);
4923 else if (hwcaps->i & v9e_hwcaps_mask)
4924 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4925 bfd_mach_sparc_v8pluse);
4926 else if (hwcaps->i & v9d_hwcaps_mask)
4927 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4928 bfd_mach_sparc_v8plusd);
4929 else if (hwcaps->i & v9c_hwcaps_mask)
4930 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4931 bfd_mach_sparc_v8plusc);
4932 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4933 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4934 bfd_mach_sparc_v8plusb);
4935 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4936 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4937 bfd_mach_sparc_v8plusa);
4938 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4939 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4940 bfd_mach_sparc_v8plus);
4941 else
4942 return FALSE;
4943 }
4944 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4945 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4946 bfd_mach_sparc_sparclite_le);
4947 else
4948 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4949 }
4950 }
4951
4952 /* Return address for Ith PLT stub in section PLT, for relocation REL
4953 or (bfd_vma) -1 if it should not be included. */
4954
4955 bfd_vma
4956 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4957 {
4958 if (ABI_64_P (plt->owner))
4959 {
4960 bfd_vma j;
4961
4962 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4963 if (i < PLT64_LARGE_THRESHOLD)
4964 return plt->vma + i * PLT64_ENTRY_SIZE;
4965
4966 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4967 i -= j;
4968 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4969 }
4970 else
4971 return rel->address;
4972 }
4973
4974 /* Merge backend specific data from an object file to the output
4975 object file when linking. */
4976
4977 bfd_boolean
4978 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4979 {
4980 bfd *obfd = info->output_bfd;
4981 obj_attribute *in_attr, *in_attrs;
4982 obj_attribute *out_attr, *out_attrs;
4983
4984 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4985 {
4986 /* This is the first object. Copy the attributes. */
4987 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4988
4989 /* Use the Tag_null value to indicate the attributes have been
4990 initialized. */
4991 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4992
4993 return TRUE;
4994 }
4995
4996 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4997 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4998
4999 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
5000 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
5001
5002 out_attr->i |= in_attr->i;
5003 out_attr->type = 1;
5004
5005 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
5006 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
5007
5008 out_attr->i |= in_attr->i;
5009 out_attr->type = 1;
5010
5011 /* Merge Tag_compatibility attributes and any common GNU ones. */
5012 _bfd_elf_merge_object_attributes (ibfd, info);
5013
5014 return TRUE;
5015 }
GDB Binutils - Deliverables
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