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2013-03-12 Sebastian Huber <sebastian.huber@embedded-brains.de>
[binutils-gdb.git] / bfd / elfxx-sparc.c
blob9684ffd7a4d9ef294769cbc4a605bdfd3d705b02
1 /* SPARC-specific support for ELF
2 Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22
23 /* This file handles functionality common to the different SPARC ABI's. */
24
25 #include "sysdep.h"
26 #include "bfd.h"
27 #include "bfdlink.h"
28 #include "libbfd.h"
29 #include "libiberty.h"
30 #include "elf-bfd.h"
31 #include "elf/sparc.h"
32 #include "opcode/sparc.h"
33 #include "elfxx-sparc.h"
34 #include "elf-vxworks.h"
35 #include "objalloc.h"
36 #include "hashtab.h"
37
38 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
39 #define MINUS_ONE (~ (bfd_vma) 0)
40
41 #define ABI_64_P(abfd) \
42 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
43
44 /* The relocation "howto" table. */
45
46 /* Utility for performing the standard initial work of an instruction
47 relocation.
48 *PRELOCATION will contain the relocated item.
49 *PINSN will contain the instruction from the input stream.
50 If the result is `bfd_reloc_other' the caller can continue with
51 performing the relocation. Otherwise it must stop and return the
52 value to its caller. */
53
54 static bfd_reloc_status_type
55 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
56 void * data, asection *input_section, bfd *output_bfd,
57 bfd_vma *prelocation, bfd_vma *pinsn)
58 {
59 bfd_vma relocation;
60 reloc_howto_type *howto = reloc_entry->howto;
61
62 if (output_bfd != (bfd *) NULL
63 && (symbol->flags & BSF_SECTION_SYM) == 0
64 && (! howto->partial_inplace
65 || reloc_entry->addend == 0))
66 {
67 reloc_entry->address += input_section->output_offset;
68 return bfd_reloc_ok;
69 }
70
71 /* This works because partial_inplace is FALSE. */
72 if (output_bfd != NULL)
73 return bfd_reloc_continue;
74
75 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
76 return bfd_reloc_outofrange;
77
78 relocation = (symbol->value
79 + symbol->section->output_section->vma
80 + symbol->section->output_offset);
81 relocation += reloc_entry->addend;
82 if (howto->pc_relative)
83 {
84 relocation -= (input_section->output_section->vma
85 + input_section->output_offset);
86 relocation -= reloc_entry->address;
87 }
88
89 *prelocation = relocation;
90 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
91 return bfd_reloc_other;
92 }
93
94 /* For unsupported relocs. */
95
96 static bfd_reloc_status_type
97 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
98 arelent *reloc_entry ATTRIBUTE_UNUSED,
99 asymbol *symbol ATTRIBUTE_UNUSED,
100 void * data ATTRIBUTE_UNUSED,
101 asection *input_section ATTRIBUTE_UNUSED,
102 bfd *output_bfd ATTRIBUTE_UNUSED,
103 char **error_message ATTRIBUTE_UNUSED)
104 {
105 return bfd_reloc_notsupported;
106 }
107
108 /* Handle the WDISP16 reloc. */
109
110 static bfd_reloc_status_type
111 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
112 void * data, asection *input_section, bfd *output_bfd,
113 char **error_message ATTRIBUTE_UNUSED)
114 {
115 bfd_vma relocation;
116 bfd_vma insn;
117 bfd_reloc_status_type status;
118
119 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
120 input_section, output_bfd, &relocation, &insn);
121 if (status != bfd_reloc_other)
122 return status;
123
124 insn &= ~ (bfd_vma) 0x303fff;
125 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
126 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
127
128 if ((bfd_signed_vma) relocation < - 0x40000
129 || (bfd_signed_vma) relocation > 0x3ffff)
130 return bfd_reloc_overflow;
131 else
132 return bfd_reloc_ok;
133 }
134
135 /* Handle the WDISP10 reloc. */
136
137 static bfd_reloc_status_type
138 sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
139 void * data, asection *input_section, bfd *output_bfd,
140 char **error_message ATTRIBUTE_UNUSED)
141 {
142 bfd_vma relocation;
143 bfd_vma insn;
144 bfd_reloc_status_type status;
145
146 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
147 input_section, output_bfd, &relocation, &insn);
148 if (status != bfd_reloc_other)
149 return status;
150
151 insn &= ~ (bfd_vma) 0x181fe0;
152 insn |= (((relocation >> 2) & 0x300) << 11)
153 | (((relocation >> 2) & 0xff) << 5);
154 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
155
156 if ((bfd_signed_vma) relocation < - 0x1000
157 || (bfd_signed_vma) relocation > 0xfff)
158 return bfd_reloc_overflow;
159 else
160 return bfd_reloc_ok;
161 }
162
163 /* Handle the HIX22 reloc. */
164
165 static bfd_reloc_status_type
166 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
167 void * data, asection *input_section, bfd *output_bfd,
168 char **error_message ATTRIBUTE_UNUSED)
169 {
170 bfd_vma relocation;
171 bfd_vma insn;
172 bfd_reloc_status_type status;
173
174 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
175 input_section, output_bfd, &relocation, &insn);
176 if (status != bfd_reloc_other)
177 return status;
178
179 relocation ^= MINUS_ONE;
180 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
181 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
182
183 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
184 return bfd_reloc_overflow;
185 else
186 return bfd_reloc_ok;
187 }
188
189 /* Handle the LOX10 reloc. */
190
191 static bfd_reloc_status_type
192 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
193 void * data, asection *input_section, bfd *output_bfd,
194 char **error_message ATTRIBUTE_UNUSED)
195 {
196 bfd_vma relocation;
197 bfd_vma insn;
198 bfd_reloc_status_type status;
199
200 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
201 input_section, output_bfd, &relocation, &insn);
202 if (status != bfd_reloc_other)
203 return status;
204
205 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
206 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
207
208 return bfd_reloc_ok;
209 }
210
211 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
212 {
213 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
214 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
215 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
216 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
217 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
218 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
219 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
220 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
221 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
223 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
224 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
225 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
226 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
227 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
228 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
229 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
230 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
231 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
232 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
233 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),
234 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),
235 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
236 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
237 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
238 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
239 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
240 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
241 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
242 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
243 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
244 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
245 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
246 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
247 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
248 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
249 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
250 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),
251 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),
252 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),
253 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
254 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
255 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),
256 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
257 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
258 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
259 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
260 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
261 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
262 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
263 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
264 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
265 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
266 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
267 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
268 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
269 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),
270 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),
271 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),
272 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),
273 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),
274 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),
275 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),
276 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),
277 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),
278 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),
279 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),
280 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),
281 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),
282 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),
283 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),
284 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),
285 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),
286 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),
287 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),
288 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),
289 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),
290 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),
291 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),
292 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),
293 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),
294 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),
295 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),
296 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),
297 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),
298 HOWTO(R_SPARC_H34,12,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",FALSE,0,0x003fffff,FALSE),
299 HOWTO(R_SPARC_SIZE32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",FALSE,0,0xffffffff,TRUE),
300 HOWTO(R_SPARC_SIZE64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",FALSE,0,MINUS_ONE, TRUE),
301 HOWTO(R_SPARC_WDISP10,2,2,10,TRUE, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",FALSE,0,0x00000000,TRUE),
302 };
303 static reloc_howto_type sparc_jmp_irel_howto =
304 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);
305 static reloc_howto_type sparc_irelative_howto =
306 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
307 static reloc_howto_type sparc_vtinherit_howto =
308 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
309 static reloc_howto_type sparc_vtentry_howto =
310 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);
311 static reloc_howto_type sparc_rev32_howto =
312 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
313
314 reloc_howto_type *
315 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
316 bfd_reloc_code_real_type code)
317 {
318 /* We explicitly handle each relocation type in the switch
319 instead of using a lookup table for efficiency. */
320 switch (code)
321 {
322 case BFD_RELOC_NONE:
323 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
324
325 case BFD_RELOC_8:
326 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
327
328 case BFD_RELOC_16:
329 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
330
331 case BFD_RELOC_32:
332 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
333
334 case BFD_RELOC_8_PCREL:
335 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
336
337 case BFD_RELOC_16_PCREL:
338 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
339
340 case BFD_RELOC_32_PCREL:
341 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
342
343 case BFD_RELOC_32_PCREL_S2:
344 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
345
346 case BFD_RELOC_SPARC_WDISP22:
347 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
348
349 case BFD_RELOC_HI22:
350 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
351
352 case BFD_RELOC_SPARC22:
353 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
354
355 case BFD_RELOC_SPARC13:
356 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
357
358 case BFD_RELOC_LO10:
359 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
360
361 case BFD_RELOC_SPARC_GOT10:
362 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
363
364 case BFD_RELOC_SPARC_GOT13:
365 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
366
367 case BFD_RELOC_SPARC_GOT22:
368 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
369
370 case BFD_RELOC_SPARC_PC10:
371 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
372
373 case BFD_RELOC_SPARC_PC22:
374 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
375
376 case BFD_RELOC_SPARC_WPLT30:
377 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
378
379 case BFD_RELOC_SPARC_COPY:
380 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
381
382 case BFD_RELOC_SPARC_GLOB_DAT:
383 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
384
385 case BFD_RELOC_SPARC_JMP_SLOT:
386 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
387
388 case BFD_RELOC_SPARC_RELATIVE:
389 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
390
391 case BFD_RELOC_SPARC_UA32:
392 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
393
394 case BFD_RELOC_SPARC_PLT32:
395 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
396
397 case BFD_RELOC_SPARC_10:
398 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
399
400 case BFD_RELOC_SPARC_11:
401 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
402
403 case BFD_RELOC_SPARC_64:
404 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
405
406 case BFD_RELOC_SPARC_OLO10:
407 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
408
409 case BFD_RELOC_SPARC_HH22:
410 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
411
412 case BFD_RELOC_SPARC_HM10:
413 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
414
415 case BFD_RELOC_SPARC_LM22:
416 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
417
418 case BFD_RELOC_SPARC_PC_HH22:
419 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
420
421 case BFD_RELOC_SPARC_PC_HM10:
422 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
423
424 case BFD_RELOC_SPARC_PC_LM22:
425 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
426
427 case BFD_RELOC_SPARC_WDISP16:
428 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
429
430 case BFD_RELOC_SPARC_WDISP19:
431 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
432
433 case BFD_RELOC_SPARC_7:
434 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
435
436 case BFD_RELOC_SPARC_5:
437 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
438
439 case BFD_RELOC_SPARC_6:
440 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
441
442 case BFD_RELOC_SPARC_DISP64:
443 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
444
445 case BFD_RELOC_SPARC_PLT64:
446 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
447
448 case BFD_RELOC_SPARC_HIX22:
449 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
450
451 case BFD_RELOC_SPARC_LOX10:
452 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
453
454 case BFD_RELOC_SPARC_H44:
455 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
456
457 case BFD_RELOC_SPARC_M44:
458 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
459
460 case BFD_RELOC_SPARC_L44:
461 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
462
463 case BFD_RELOC_SPARC_REGISTER:
464 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
465
466 case BFD_RELOC_SPARC_UA64:
467 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
468
469 case BFD_RELOC_SPARC_UA16:
470 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
471
472 case BFD_RELOC_SPARC_TLS_GD_HI22:
473 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
474
475 case BFD_RELOC_SPARC_TLS_GD_LO10:
476 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
477
478 case BFD_RELOC_SPARC_TLS_GD_ADD:
479 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
480
481 case BFD_RELOC_SPARC_TLS_GD_CALL:
482 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
483
484 case BFD_RELOC_SPARC_TLS_LDM_HI22:
485 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
486
487 case BFD_RELOC_SPARC_TLS_LDM_LO10:
488 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
489
490 case BFD_RELOC_SPARC_TLS_LDM_ADD:
491 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
492
493 case BFD_RELOC_SPARC_TLS_LDM_CALL:
494 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
495
496 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
497 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
498
499 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
500 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
501
502 case BFD_RELOC_SPARC_TLS_LDO_ADD:
503 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
504
505 case BFD_RELOC_SPARC_TLS_IE_HI22:
506 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
507
508 case BFD_RELOC_SPARC_TLS_IE_LO10:
509 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
510
511 case BFD_RELOC_SPARC_TLS_IE_LD:
512 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
513
514 case BFD_RELOC_SPARC_TLS_IE_LDX:
515 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
516
517 case BFD_RELOC_SPARC_TLS_IE_ADD:
518 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
519
520 case BFD_RELOC_SPARC_TLS_LE_HIX22:
521 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
522
523 case BFD_RELOC_SPARC_TLS_LE_LOX10:
524 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
525
526 case BFD_RELOC_SPARC_TLS_DTPMOD32:
527 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
528
529 case BFD_RELOC_SPARC_TLS_DTPMOD64:
530 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
531
532 case BFD_RELOC_SPARC_TLS_DTPOFF32:
533 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
534
535 case BFD_RELOC_SPARC_TLS_DTPOFF64:
536 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
537
538 case BFD_RELOC_SPARC_TLS_TPOFF32:
539 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
540
541 case BFD_RELOC_SPARC_TLS_TPOFF64:
542 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
543
544 case BFD_RELOC_SPARC_GOTDATA_HIX22:
545 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
546
547 case BFD_RELOC_SPARC_GOTDATA_LOX10:
548 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
549
550 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
551 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
552
553 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
554 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
555
556 case BFD_RELOC_SPARC_GOTDATA_OP:
557 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
558
559 case BFD_RELOC_SPARC_H34:
560 return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
561
562 case BFD_RELOC_SPARC_SIZE32:
563 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
564
565 case BFD_RELOC_SPARC_SIZE64:
566 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
567
568 case BFD_RELOC_SPARC_WDISP10:
569 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
570
571 case BFD_RELOC_SPARC_JMP_IREL:
572 return &sparc_jmp_irel_howto;
573
574 case BFD_RELOC_SPARC_IRELATIVE:
575 return &sparc_irelative_howto;
576
577 case BFD_RELOC_VTABLE_INHERIT:
578 return &sparc_vtinherit_howto;
579
580 case BFD_RELOC_VTABLE_ENTRY:
581 return &sparc_vtentry_howto;
582
583 case BFD_RELOC_SPARC_REV32:
584 return &sparc_rev32_howto;
585
586 default:
587 break;
588 }
589 bfd_set_error (bfd_error_bad_value);
590 return NULL;
591 }
592
593 reloc_howto_type *
594 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
595 const char *r_name)
596 {
597 unsigned int i;
598
599 for (i = 0;
600 i < (sizeof (_bfd_sparc_elf_howto_table)
601 / sizeof (_bfd_sparc_elf_howto_table[0]));
602 i++)
603 if (_bfd_sparc_elf_howto_table[i].name != NULL
604 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
605 return &_bfd_sparc_elf_howto_table[i];
606
607 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
608 return &sparc_vtinherit_howto;
609 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
610 return &sparc_vtentry_howto;
611 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
612 return &sparc_rev32_howto;
613
614 return NULL;
615 }
616
617 reloc_howto_type *
618 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
619 {
620 switch (r_type)
621 {
622 case R_SPARC_JMP_IREL:
623 return &sparc_jmp_irel_howto;
624
625 case R_SPARC_IRELATIVE:
626 return &sparc_irelative_howto;
627
628 case R_SPARC_GNU_VTINHERIT:
629 return &sparc_vtinherit_howto;
630
631 case R_SPARC_GNU_VTENTRY:
632 return &sparc_vtentry_howto;
633
634 case R_SPARC_REV32:
635 return &sparc_rev32_howto;
636
637 default:
638 if (r_type >= (unsigned int) R_SPARC_max_std)
639 {
640 (*_bfd_error_handler) (_("invalid relocation type %d"),
641 (int) r_type);
642 r_type = R_SPARC_NONE;
643 }
644 return &_bfd_sparc_elf_howto_table[r_type];
645 }
646 }
647
648 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
649 so just take advantage of that. */
650 #define SPARC_ELF_R_TYPE(r_info) \
651 ((r_info) & 0xff)
652
653 void
654 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
655 Elf_Internal_Rela *dst)
656 {
657 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
658
659 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
660 }
661 \f
662
663 /* The nop opcode we use. */
664 #define SPARC_NOP 0x01000000
665
666 #define SPARC_INSN_BYTES 4
667
668 /* The SPARC linker needs to keep track of the number of relocs that it
669 decides to copy as dynamic relocs in check_relocs for each symbol.
670 This is so that it can later discard them if they are found to be
671 unnecessary. We store the information in a field extending the
672 regular ELF linker hash table. */
673
674 struct _bfd_sparc_elf_dyn_relocs
675 {
676 struct _bfd_sparc_elf_dyn_relocs *next;
677
678 /* The input section of the reloc. */
679 asection *sec;
680
681 /* Total number of relocs copied for the input section. */
682 bfd_size_type count;
683
684 /* Number of pc-relative relocs copied for the input section. */
685 bfd_size_type pc_count;
686 };
687
688 /* SPARC ELF linker hash entry. */
689
690 struct _bfd_sparc_elf_link_hash_entry
691 {
692 struct elf_link_hash_entry elf;
693
694 /* Track dynamic relocs copied for this symbol. */
695 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
696
697 #define GOT_UNKNOWN 0
698 #define GOT_NORMAL 1
699 #define GOT_TLS_GD 2
700 #define GOT_TLS_IE 3
701 unsigned char tls_type;
702 };
703
704 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
705
706 struct _bfd_sparc_elf_obj_tdata
707 {
708 struct elf_obj_tdata root;
709
710 /* tls_type for each local got entry. */
711 char *local_got_tls_type;
712
713 /* TRUE if TLS GD relocs has been seen for this object. */
714 bfd_boolean has_tlsgd;
715 };
716
717 #define _bfd_sparc_elf_tdata(abfd) \
718 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
719
720 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
721 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
722
723 #define is_sparc_elf(bfd) \
724 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
725 && elf_tdata (bfd) != NULL \
726 && elf_object_id (bfd) == SPARC_ELF_DATA)
727
728 bfd_boolean
729 _bfd_sparc_elf_mkobject (bfd *abfd)
730 {
731 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
732 SPARC_ELF_DATA);
733 }
734
735 static void
736 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
737 {
738 bfd_put_32 (abfd, val, ptr);
739 }
740
741 static void
742 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
743 {
744 bfd_put_64 (abfd, val, ptr);
745 }
746
747 static void
748 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
749 {
750 const struct elf_backend_data *bed;
751 bfd_byte *loc;
752
753 bed = get_elf_backend_data (abfd);
754 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
755 bed->s->swap_reloca_out (abfd, rel, loc);
756 }
757
758 static bfd_vma
759 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
760 bfd_vma rel_index ATTRIBUTE_UNUSED,
761 bfd_vma type ATTRIBUTE_UNUSED)
762 {
763 return ELF64_R_INFO (rel_index,
764 (in_rel ?
765 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
766 type) : type));
767 }
768
769 static bfd_vma
770 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
771 bfd_vma rel_index, bfd_vma type)
772 {
773 return ELF32_R_INFO (rel_index, type);
774 }
775
776 static bfd_vma
777 sparc_elf_r_symndx_64 (bfd_vma r_info)
778 {
779 bfd_vma r_symndx = ELF32_R_SYM (r_info);
780 return (r_symndx >> 24);
781 }
782
783 static bfd_vma
784 sparc_elf_r_symndx_32 (bfd_vma r_info)
785 {
786 return ELF32_R_SYM (r_info);
787 }
788
789 /* PLT/GOT stuff */
790
791 #define PLT32_ENTRY_SIZE 12
792 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
793
794 /* The first four entries in a 32-bit procedure linkage table are reserved,
795 and the initial contents are unimportant (we zero them out).
796 Subsequent entries look like this. See the SVR4 ABI SPARC
797 supplement to see how this works. */
798
799 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
800 #define PLT32_ENTRY_WORD0 0x03000000
801 /* b,a .plt0. We fill in the offset later. */
802 #define PLT32_ENTRY_WORD1 0x30800000
803 /* nop. */
804 #define PLT32_ENTRY_WORD2 SPARC_NOP
805
806 static int
807 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
808 bfd_vma max ATTRIBUTE_UNUSED,
809 bfd_vma *r_offset)
810 {
811 bfd_put_32 (output_bfd,
812 PLT32_ENTRY_WORD0 + offset,
813 splt->contents + offset);
814 bfd_put_32 (output_bfd,
815 (PLT32_ENTRY_WORD1
816 + (((- (offset + 4)) >> 2) & 0x3fffff)),
817 splt->contents + offset + 4);
818 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
819 splt->contents + offset + 8);
820
821 *r_offset = offset;
822
823 return offset / PLT32_ENTRY_SIZE - 4;
824 }
825
826 /* Both the headers and the entries are icache aligned. */
827 #define PLT64_ENTRY_SIZE 32
828 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
829 #define PLT64_LARGE_THRESHOLD 32768
830
831 static int
832 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
833 bfd_vma max, bfd_vma *r_offset)
834 {
835 unsigned char *entry = splt->contents + offset;
836 const unsigned int nop = SPARC_NOP;
837 int plt_index;
838
839 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
840 {
841 unsigned int sethi, ba;
842
843 *r_offset = offset;
844
845 plt_index = (offset / PLT64_ENTRY_SIZE);
846
847 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
848 ba = 0x30680000
849 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
850
851 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
852 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
853 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
854 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
855 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
856 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
857 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
858 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
859 }
860 else
861 {
862 unsigned char *ptr;
863 unsigned int ldx;
864 int block, last_block, ofs, last_ofs, chunks_this_block;
865 const int insn_chunk_size = (6 * 4);
866 const int ptr_chunk_size = (1 * 8);
867 const int entries_per_block = 160;
868 const int block_size = entries_per_block * (insn_chunk_size
869 + ptr_chunk_size);
870
871 /* Entries 32768 and higher are grouped into blocks of 160.
872 The blocks are further subdivided into 160 sequences of
873 6 instructions and 160 pointers. If a block does not require
874 the full 160 entries, let's say it requires N, then there
875 will be N sequences of 6 instructions and N pointers. */
876
877 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
878 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
879
880 block = offset / block_size;
881 last_block = max / block_size;
882 if (block != last_block)
883 {
884 chunks_this_block = 160;
885 }
886 else
887 {
888 last_ofs = max % block_size;
889 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
890 }
891
892 ofs = offset % block_size;
893
894 plt_index = (PLT64_LARGE_THRESHOLD +
895 (block * 160) +
896 (ofs / insn_chunk_size));
897
898 ptr = splt->contents
899 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
900 + (block * block_size)
901 + (chunks_this_block * insn_chunk_size)
902 + (ofs / insn_chunk_size) * ptr_chunk_size;
903
904 *r_offset = (bfd_vma) (ptr - splt->contents);
905
906 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
907
908 /* mov %o7,%g5
909 call .+8
910 nop
911 ldx [%o7+P],%g1
912 jmpl %o7+%g1,%g1
913 mov %g5,%o7 */
914 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
915 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
916 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
917 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
918 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
919 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
920
921 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
922 }
923
924 return plt_index - 4;
925 }
926
927 /* The format of the first PLT entry in a VxWorks executable. */
928 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
929 {
930 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
931 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
932 0xc4008000, /* ld [ %g2 ], %g2 */
933 0x81c08000, /* jmp %g2 */
934 0x01000000 /* nop */
935 };
936
937 /* The format of subsequent PLT entries. */
938 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
939 {
940 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
941 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
942 0xc2004000, /* ld [ %g1 ], %g1 */
943 0x81c04000, /* jmp %g1 */
944 0x01000000, /* nop */
945 0x03000000, /* sethi %hi(f@pltindex), %g1 */
946 0x10800000, /* b _PLT_resolve */
947 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
948 };
949
950 /* The format of the first PLT entry in a VxWorks shared object. */
951 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
952 {
953 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
954 0x81c08000, /* jmp %g2 */
955 0x01000000 /* nop */
956 };
957
958 /* The format of subsequent PLT entries. */
959 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
960 {
961 0x03000000, /* sethi %hi(f@got), %g1 */
962 0x82106000, /* or %g1, %lo(f@got), %g1 */
963 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
964 0x81c04000, /* jmp %g1 */
965 0x01000000, /* nop */
966 0x03000000, /* sethi %hi(f@pltindex), %g1 */
967 0x10800000, /* b _PLT_resolve */
968 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
969 };
970
971 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
972 htab->put_word(bfd, val, ptr)
973
974 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
975 htab->r_info(in_rel, index, type)
976
977 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
978 htab->r_symndx(r_info)
979
980 #define SPARC_ELF_WORD_BYTES(htab) \
981 htab->bytes_per_word
982
983 #define SPARC_ELF_RELA_BYTES(htab) \
984 htab->bytes_per_rela
985
986 #define SPARC_ELF_DTPOFF_RELOC(htab) \
987 htab->dtpoff_reloc
988
989 #define SPARC_ELF_DTPMOD_RELOC(htab) \
990 htab->dtpmod_reloc
991
992 #define SPARC_ELF_TPOFF_RELOC(htab) \
993 htab->tpoff_reloc
994
995 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
996 htab->build_plt_entry (obfd, splt, off, max, r_off)
997
998 /* Create an entry in an SPARC ELF linker hash table. */
999
1000 static struct bfd_hash_entry *
1001 link_hash_newfunc (struct bfd_hash_entry *entry,
1002 struct bfd_hash_table *table, const char *string)
1003 {
1004 /* Allocate the structure if it has not already been allocated by a
1005 subclass. */
1006 if (entry == NULL)
1007 {
1008 entry = bfd_hash_allocate (table,
1009 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1010 if (entry == NULL)
1011 return entry;
1012 }
1013
1014 /* Call the allocation method of the superclass. */
1015 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1016 if (entry != NULL)
1017 {
1018 struct _bfd_sparc_elf_link_hash_entry *eh;
1019
1020 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1021 eh->dyn_relocs = NULL;
1022 eh->tls_type = GOT_UNKNOWN;
1023 }
1024
1025 return entry;
1026 }
1027
1028 /* The name of the dynamic interpreter. This is put in the .interp
1029 section. */
1030
1031 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1032 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1033
1034 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1035 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1036 as global symbol. We reuse indx and dynstr_index for local symbol
1037 hash since they aren't used by global symbols in this backend. */
1038
1039 static hashval_t
1040 elf_sparc_local_htab_hash (const void *ptr)
1041 {
1042 struct elf_link_hash_entry *h
1043 = (struct elf_link_hash_entry *) ptr;
1044 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1045 }
1046
1047 /* Compare local hash entries. */
1048
1049 static int
1050 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1051 {
1052 struct elf_link_hash_entry *h1
1053 = (struct elf_link_hash_entry *) ptr1;
1054 struct elf_link_hash_entry *h2
1055 = (struct elf_link_hash_entry *) ptr2;
1056
1057 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1058 }
1059
1060 /* Find and/or create a hash entry for local symbol. */
1061
1062 static struct elf_link_hash_entry *
1063 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1064 bfd *abfd, const Elf_Internal_Rela *rel,
1065 bfd_boolean create)
1066 {
1067 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1068 asection *sec = abfd->sections;
1069 unsigned long r_symndx;
1070 hashval_t h;
1071 void **slot;
1072
1073 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1074 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1075
1076 e.elf.indx = sec->id;
1077 e.elf.dynstr_index = r_symndx;
1078 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1079 create ? INSERT : NO_INSERT);
1080
1081 if (!slot)
1082 return NULL;
1083
1084 if (*slot)
1085 {
1086 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1087 return &ret->elf;
1088 }
1089
1090 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1091 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1092 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1093 if (ret)
1094 {
1095 memset (ret, 0, sizeof (*ret));
1096 ret->elf.indx = sec->id;
1097 ret->elf.dynstr_index = r_symndx;
1098 ret->elf.dynindx = -1;
1099 ret->elf.plt.offset = (bfd_vma) -1;
1100 ret->elf.got.offset = (bfd_vma) -1;
1101 *slot = ret;
1102 }
1103 return &ret->elf;
1104 }
1105
1106 /* Create a SPARC ELF linker hash table. */
1107
1108 struct bfd_link_hash_table *
1109 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1110 {
1111 struct _bfd_sparc_elf_link_hash_table *ret;
1112 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1113
1114 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1115 if (ret == NULL)
1116 return NULL;
1117
1118 if (ABI_64_P (abfd))
1119 {
1120 ret->put_word = sparc_put_word_64;
1121 ret->r_info = sparc_elf_r_info_64;
1122 ret->r_symndx = sparc_elf_r_symndx_64;
1123 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1124 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1125 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1126 ret->word_align_power = 3;
1127 ret->align_power_max = 4;
1128 ret->bytes_per_word = 8;
1129 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1130 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1131 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1132
1133 ret->build_plt_entry = sparc64_plt_entry_build;
1134 ret->plt_header_size = PLT64_HEADER_SIZE;
1135 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1136 }
1137 else
1138 {
1139 ret->put_word = sparc_put_word_32;
1140 ret->r_info = sparc_elf_r_info_32;
1141 ret->r_symndx = sparc_elf_r_symndx_32;
1142 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1143 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1144 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1145 ret->word_align_power = 2;
1146 ret->align_power_max = 3;
1147 ret->bytes_per_word = 4;
1148 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1149 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1150 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1151
1152 ret->build_plt_entry = sparc32_plt_entry_build;
1153 ret->plt_header_size = PLT32_HEADER_SIZE;
1154 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1155 }
1156
1157 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1158 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1159 SPARC_ELF_DATA))
1160 {
1161 free (ret);
1162 return NULL;
1163 }
1164
1165 ret->loc_hash_table = htab_try_create (1024,
1166 elf_sparc_local_htab_hash,
1167 elf_sparc_local_htab_eq,
1168 NULL);
1169 ret->loc_hash_memory = objalloc_create ();
1170 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1171 {
1172 free (ret);
1173 return NULL;
1174 }
1175
1176 return &ret->elf.root;
1177 }
1178
1179 /* Destroy a SPARC ELF linker hash table. */
1180
1181 void
1182 _bfd_sparc_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
1183 {
1184 struct _bfd_sparc_elf_link_hash_table *htab
1185 = (struct _bfd_sparc_elf_link_hash_table *) hash;
1186
1187 if (htab->loc_hash_table)
1188 htab_delete (htab->loc_hash_table);
1189 if (htab->loc_hash_memory)
1190 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1191 _bfd_generic_link_hash_table_free (hash);
1192 }
1193
1194 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1195 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1196 hash table. */
1197
1198 bfd_boolean
1199 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1200 struct bfd_link_info *info)
1201 {
1202 struct _bfd_sparc_elf_link_hash_table *htab;
1203
1204 htab = _bfd_sparc_elf_hash_table (info);
1205 BFD_ASSERT (htab != NULL);
1206
1207 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1208 return FALSE;
1209
1210 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1211 if (!info->shared)
1212 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1213
1214 if (htab->is_vxworks)
1215 {
1216 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1217 return FALSE;
1218 if (info->shared)
1219 {
1220 htab->plt_header_size
1221 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1222 htab->plt_entry_size
1223 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1224 }
1225 else
1226 {
1227 htab->plt_header_size
1228 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1229 htab->plt_entry_size
1230 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1231 }
1232 }
1233
1234 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1235 || (!info->shared && !htab->srelbss))
1236 abort ();
1237
1238 return TRUE;
1239 }
1240
1241 static bfd_boolean
1242 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1243 {
1244 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1245 struct elf_link_hash_table *htab = elf_hash_table (info);
1246 flagword flags, pltflags;
1247 asection *s;
1248
1249 if (htab->irelifunc != NULL || htab->iplt != NULL)
1250 return TRUE;
1251
1252 flags = bed->dynamic_sec_flags;
1253 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1254
1255 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1256 if (s == NULL
1257 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1258 return FALSE;
1259 htab->iplt = s;
1260
1261 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1262 flags | SEC_READONLY);
1263 if (s == NULL
1264 || ! bfd_set_section_alignment (abfd, s,
1265 bed->s->log_file_align))
1266 return FALSE;
1267 htab->irelplt = s;
1268
1269 return TRUE;
1270 }
1271
1272 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1273
1274 void
1275 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1276 struct elf_link_hash_entry *dir,
1277 struct elf_link_hash_entry *ind)
1278 {
1279 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1280
1281 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1282 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1283
1284 if (eind->dyn_relocs != NULL)
1285 {
1286 if (edir->dyn_relocs != NULL)
1287 {
1288 struct _bfd_sparc_elf_dyn_relocs **pp;
1289 struct _bfd_sparc_elf_dyn_relocs *p;
1290
1291 /* Add reloc counts against the indirect sym to the direct sym
1292 list. Merge any entries against the same section. */
1293 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1294 {
1295 struct _bfd_sparc_elf_dyn_relocs *q;
1296
1297 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1298 if (q->sec == p->sec)
1299 {
1300 q->pc_count += p->pc_count;
1301 q->count += p->count;
1302 *pp = p->next;
1303 break;
1304 }
1305 if (q == NULL)
1306 pp = &p->next;
1307 }
1308 *pp = edir->dyn_relocs;
1309 }
1310
1311 edir->dyn_relocs = eind->dyn_relocs;
1312 eind->dyn_relocs = NULL;
1313 }
1314
1315 if (ind->root.type == bfd_link_hash_indirect
1316 && dir->got.refcount <= 0)
1317 {
1318 edir->tls_type = eind->tls_type;
1319 eind->tls_type = GOT_UNKNOWN;
1320 }
1321 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1322 }
1323
1324 static int
1325 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1326 int r_type, int is_local)
1327 {
1328 if (! ABI_64_P (abfd)
1329 && r_type == R_SPARC_TLS_GD_HI22
1330 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1331 r_type = R_SPARC_REV32;
1332
1333 if (info->shared)
1334 return r_type;
1335
1336 switch (r_type)
1337 {
1338 case R_SPARC_TLS_GD_HI22:
1339 if (is_local)
1340 return R_SPARC_TLS_LE_HIX22;
1341 return R_SPARC_TLS_IE_HI22;
1342 case R_SPARC_TLS_GD_LO10:
1343 if (is_local)
1344 return R_SPARC_TLS_LE_LOX10;
1345 return R_SPARC_TLS_IE_LO10;
1346 case R_SPARC_TLS_IE_HI22:
1347 if (is_local)
1348 return R_SPARC_TLS_LE_HIX22;
1349 return r_type;
1350 case R_SPARC_TLS_IE_LO10:
1351 if (is_local)
1352 return R_SPARC_TLS_LE_LOX10;
1353 return r_type;
1354 case R_SPARC_TLS_LDM_HI22:
1355 return R_SPARC_TLS_LE_HIX22;
1356 case R_SPARC_TLS_LDM_LO10:
1357 return R_SPARC_TLS_LE_LOX10;
1358 }
1359
1360 return r_type;
1361 }
1362 \f
1363 /* Look through the relocs for a section during the first phase, and
1364 allocate space in the global offset table or procedure linkage
1365 table. */
1366
1367 bfd_boolean
1368 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1369 asection *sec, const Elf_Internal_Rela *relocs)
1370 {
1371 struct _bfd_sparc_elf_link_hash_table *htab;
1372 Elf_Internal_Shdr *symtab_hdr;
1373 struct elf_link_hash_entry **sym_hashes;
1374 const Elf_Internal_Rela *rel;
1375 const Elf_Internal_Rela *rel_end;
1376 asection *sreloc;
1377 int num_relocs;
1378 bfd_boolean checked_tlsgd = FALSE;
1379
1380 if (info->relocatable)
1381 return TRUE;
1382
1383 htab = _bfd_sparc_elf_hash_table (info);
1384 BFD_ASSERT (htab != NULL);
1385 symtab_hdr = &elf_symtab_hdr (abfd);
1386 sym_hashes = elf_sym_hashes (abfd);
1387
1388 sreloc = NULL;
1389
1390 if (ABI_64_P (abfd))
1391 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1392 else
1393 num_relocs = sec->reloc_count;
1394
1395 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1396
1397 if (htab->elf.dynobj == NULL)
1398 htab->elf.dynobj = abfd;
1399 if (!create_ifunc_sections (htab->elf.dynobj, info))
1400 return FALSE;
1401
1402 rel_end = relocs + num_relocs;
1403 for (rel = relocs; rel < rel_end; rel++)
1404 {
1405 unsigned int r_type;
1406 unsigned long r_symndx;
1407 struct elf_link_hash_entry *h;
1408 Elf_Internal_Sym *isym;
1409
1410 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1411 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1412
1413 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1414 {
1415 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1416 abfd, r_symndx);
1417 return FALSE;
1418 }
1419
1420 isym = NULL;
1421 if (r_symndx < symtab_hdr->sh_info)
1422 {
1423 /* A local symbol. */
1424 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1425 abfd, r_symndx);
1426 if (isym == NULL)
1427 return FALSE;
1428
1429 /* Check relocation against local STT_GNU_IFUNC symbol. */
1430 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1431 {
1432 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1433 TRUE);
1434 if (h == NULL)
1435 return FALSE;
1436
1437 /* Fake a STT_GNU_IFUNC symbol. */
1438 h->type = STT_GNU_IFUNC;
1439 h->def_regular = 1;
1440 h->ref_regular = 1;
1441 h->forced_local = 1;
1442 h->root.type = bfd_link_hash_defined;
1443 }
1444 else
1445 h = NULL;
1446 }
1447 else
1448 {
1449 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1450 while (h->root.type == bfd_link_hash_indirect
1451 || h->root.type == bfd_link_hash_warning)
1452 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1453 }
1454
1455 if (h && h->type == STT_GNU_IFUNC)
1456 {
1457 if (h->def_regular)
1458 {
1459 h->ref_regular = 1;
1460 h->plt.refcount += 1;
1461 }
1462 }
1463
1464 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1465 with R_SPARC_TLS_GD_HI22. */
1466 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1467 switch (r_type)
1468 {
1469 case R_SPARC_TLS_GD_HI22:
1470 {
1471 const Elf_Internal_Rela *relt;
1472
1473 for (relt = rel + 1; relt < rel_end; relt++)
1474 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1475 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1476 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1477 break;
1478 checked_tlsgd = TRUE;
1479 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1480 }
1481 break;
1482 case R_SPARC_TLS_GD_LO10:
1483 case R_SPARC_TLS_GD_ADD:
1484 case R_SPARC_TLS_GD_CALL:
1485 checked_tlsgd = TRUE;
1486 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1487 break;
1488 }
1489
1490 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1491 switch (r_type)
1492 {
1493 case R_SPARC_TLS_LDM_HI22:
1494 case R_SPARC_TLS_LDM_LO10:
1495 htab->tls_ldm_got.refcount += 1;
1496 break;
1497
1498 case R_SPARC_TLS_LE_HIX22:
1499 case R_SPARC_TLS_LE_LOX10:
1500 if (info->shared)
1501 goto r_sparc_plt32;
1502 break;
1503
1504 case R_SPARC_TLS_IE_HI22:
1505 case R_SPARC_TLS_IE_LO10:
1506 if (info->shared)
1507 info->flags |= DF_STATIC_TLS;
1508 /* Fall through */
1509
1510 case R_SPARC_GOT10:
1511 case R_SPARC_GOT13:
1512 case R_SPARC_GOT22:
1513 case R_SPARC_GOTDATA_HIX22:
1514 case R_SPARC_GOTDATA_LOX10:
1515 case R_SPARC_GOTDATA_OP_HIX22:
1516 case R_SPARC_GOTDATA_OP_LOX10:
1517 case R_SPARC_TLS_GD_HI22:
1518 case R_SPARC_TLS_GD_LO10:
1519 /* This symbol requires a global offset table entry. */
1520 {
1521 int tls_type, old_tls_type;
1522
1523 switch (r_type)
1524 {
1525 default:
1526 case R_SPARC_GOT10:
1527 case R_SPARC_GOT13:
1528 case R_SPARC_GOT22:
1529 case R_SPARC_GOTDATA_OP_HIX22:
1530 case R_SPARC_GOTDATA_OP_LOX10:
1531 tls_type = GOT_NORMAL;
1532 break;
1533 case R_SPARC_TLS_GD_HI22:
1534 case R_SPARC_TLS_GD_LO10:
1535 tls_type = GOT_TLS_GD;
1536 break;
1537 case R_SPARC_TLS_IE_HI22:
1538 case R_SPARC_TLS_IE_LO10:
1539 tls_type = GOT_TLS_IE;
1540 break;
1541 }
1542
1543 if (h != NULL)
1544 {
1545 h->got.refcount += 1;
1546 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1547 }
1548 else
1549 {
1550 bfd_signed_vma *local_got_refcounts;
1551
1552 /* This is a global offset table entry for a local symbol. */
1553 local_got_refcounts = elf_local_got_refcounts (abfd);
1554 if (local_got_refcounts == NULL)
1555 {
1556 bfd_size_type size;
1557
1558 size = symtab_hdr->sh_info;
1559 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1560 local_got_refcounts = ((bfd_signed_vma *)
1561 bfd_zalloc (abfd, size));
1562 if (local_got_refcounts == NULL)
1563 return FALSE;
1564 elf_local_got_refcounts (abfd) = local_got_refcounts;
1565 _bfd_sparc_elf_local_got_tls_type (abfd)
1566 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1567 }
1568 switch (r_type)
1569 {
1570 case R_SPARC_GOTDATA_OP_HIX22:
1571 case R_SPARC_GOTDATA_OP_LOX10:
1572 break;
1573
1574 default:
1575 local_got_refcounts[r_symndx] += 1;
1576 break;
1577 }
1578 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1579 }
1580
1581 /* If a TLS symbol is accessed using IE at least once,
1582 there is no point to use dynamic model for it. */
1583 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1584 && (old_tls_type != GOT_TLS_GD
1585 || tls_type != GOT_TLS_IE))
1586 {
1587 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1588 tls_type = old_tls_type;
1589 else
1590 {
1591 (*_bfd_error_handler)
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 (info->shared)
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 && !info->shared)
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 ((info->shared
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 || (!info->shared
1770 && (sec->flags & SEC_ALLOC) != 0
1771 && h != NULL
1772 && (h->root.type == bfd_link_hash_defweak
1773 || !h->def_regular))
1774 || (!info->shared
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 !info->executable. */
1878 if (info->shared)
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 (info->relocatable)
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 (info->shared)
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;
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 (info->shared)
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_ALLOC) != 0 && h->size != 0)
2203 {
2204 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
2205 h->needs_copy = 1;
2206 }
2207
2208 s = htab->sdynbss;
2209
2210 return _bfd_elf_adjust_dynamic_copy (h, s);
2211 }
2212
2213 /* Allocate space in .plt, .got and associated reloc sections for
2214 dynamic relocs. */
2215
2216 static bfd_boolean
2217 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2218 {
2219 struct bfd_link_info *info;
2220 struct _bfd_sparc_elf_link_hash_table *htab;
2221 struct _bfd_sparc_elf_link_hash_entry *eh;
2222 struct _bfd_sparc_elf_dyn_relocs *p;
2223
2224 if (h->root.type == bfd_link_hash_indirect)
2225 return TRUE;
2226
2227 info = (struct bfd_link_info *) inf;
2228 htab = _bfd_sparc_elf_hash_table (info);
2229 BFD_ASSERT (htab != NULL);
2230
2231 if ((htab->elf.dynamic_sections_created
2232 && h->plt.refcount > 0)
2233 || (h->type == STT_GNU_IFUNC
2234 && h->def_regular
2235 && h->ref_regular))
2236 {
2237 /* Make sure this symbol is output as a dynamic symbol.
2238 Undefined weak syms won't yet be marked as dynamic. */
2239 if (h->dynindx == -1
2240 && !h->forced_local)
2241 {
2242 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2243 return FALSE;
2244 }
2245
2246 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)
2247 || (h->type == STT_GNU_IFUNC
2248 && h->def_regular))
2249 {
2250 asection *s = htab->elf.splt;
2251
2252 if (s == NULL)
2253 s = htab->elf.iplt;
2254
2255 /* Allocate room for the header. */
2256 if (s->size == 0)
2257 {
2258 s->size = htab->plt_header_size;
2259
2260 /* Allocate space for the .rela.plt.unloaded relocations. */
2261 if (htab->is_vxworks && !info->shared)
2262 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2263 }
2264
2265 /* The procedure linkage table size is bounded by the magnitude
2266 of the offset we can describe in the entry. */
2267 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2268 (((bfd_vma)1 << 31) << 1) : 0x400000))
2269 {
2270 bfd_set_error (bfd_error_bad_value);
2271 return FALSE;
2272 }
2273
2274 if (SPARC_ELF_WORD_BYTES(htab) == 8
2275 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2276 {
2277 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2278
2279
2280 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2281
2282 h->plt.offset = (s->size - (off * 8));
2283 }
2284 else
2285 h->plt.offset = s->size;
2286
2287 /* If this symbol is not defined in a regular file, and we are
2288 not generating a shared library, then set the symbol to this
2289 location in the .plt. This is required to make function
2290 pointers compare as equal between the normal executable and
2291 the shared library. */
2292 if (! info->shared
2293 && !h->def_regular)
2294 {
2295 h->root.u.def.section = s;
2296 h->root.u.def.value = h->plt.offset;
2297 }
2298
2299 /* Make room for this entry. */
2300 s->size += htab->plt_entry_size;
2301
2302 /* We also need to make an entry in the .rela.plt section. */
2303 if (s == htab->elf.splt)
2304 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2305 else
2306 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2307
2308 if (htab->is_vxworks)
2309 {
2310 /* Allocate space for the .got.plt entry. */
2311 htab->elf.sgotplt->size += 4;
2312
2313 /* ...and for the .rela.plt.unloaded relocations. */
2314 if (!info->shared)
2315 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2316 }
2317 }
2318 else
2319 {
2320 h->plt.offset = (bfd_vma) -1;
2321 h->needs_plt = 0;
2322 }
2323 }
2324 else
2325 {
2326 h->plt.offset = (bfd_vma) -1;
2327 h->needs_plt = 0;
2328 }
2329
2330 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2331 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2332 if (h->got.refcount > 0
2333 && !info->shared
2334 && h->dynindx == -1
2335 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2336 h->got.offset = (bfd_vma) -1;
2337 else if (h->got.refcount > 0)
2338 {
2339 asection *s;
2340 bfd_boolean dyn;
2341 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2342
2343 /* Make sure this symbol is output as a dynamic symbol.
2344 Undefined weak syms won't yet be marked as dynamic. */
2345 if (h->dynindx == -1
2346 && !h->forced_local)
2347 {
2348 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2349 return FALSE;
2350 }
2351
2352 s = htab->elf.sgot;
2353 h->got.offset = s->size;
2354 s->size += SPARC_ELF_WORD_BYTES (htab);
2355 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2356 if (tls_type == GOT_TLS_GD)
2357 s->size += SPARC_ELF_WORD_BYTES (htab);
2358 dyn = htab->elf.dynamic_sections_created;
2359 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2360 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2361 global. */
2362 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2363 || tls_type == GOT_TLS_IE
2364 || h->type == STT_GNU_IFUNC)
2365 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2366 else if (tls_type == GOT_TLS_GD)
2367 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2368 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2369 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2370 }
2371 else
2372 h->got.offset = (bfd_vma) -1;
2373
2374 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2375 if (eh->dyn_relocs == NULL)
2376 return TRUE;
2377
2378 /* In the shared -Bsymbolic case, discard space allocated for
2379 dynamic pc-relative relocs against symbols which turn out to be
2380 defined in regular objects. For the normal shared case, discard
2381 space for pc-relative relocs that have become local due to symbol
2382 visibility changes. */
2383
2384 if (info->shared)
2385 {
2386 if (SYMBOL_CALLS_LOCAL (info, h))
2387 {
2388 struct _bfd_sparc_elf_dyn_relocs **pp;
2389
2390 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2391 {
2392 p->count -= p->pc_count;
2393 p->pc_count = 0;
2394 if (p->count == 0)
2395 *pp = p->next;
2396 else
2397 pp = &p->next;
2398 }
2399 }
2400
2401 if (htab->is_vxworks)
2402 {
2403 struct _bfd_sparc_elf_dyn_relocs **pp;
2404
2405 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2406 {
2407 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2408 *pp = p->next;
2409 else
2410 pp = &p->next;
2411 }
2412 }
2413
2414 /* Also discard relocs on undefined weak syms with non-default
2415 visibility. */
2416 if (eh->dyn_relocs != NULL
2417 && h->root.type == bfd_link_hash_undefweak)
2418 {
2419 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2420 eh->dyn_relocs = NULL;
2421
2422 /* Make sure undefined weak symbols are output as a dynamic
2423 symbol in PIEs. */
2424 else if (h->dynindx == -1
2425 && !h->forced_local)
2426 {
2427 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2428 return FALSE;
2429 }
2430 }
2431 }
2432 else
2433 {
2434 /* For the non-shared case, discard space for relocs against
2435 symbols which turn out to need copy relocs or are not
2436 dynamic. */
2437
2438 if (!h->non_got_ref
2439 && ((h->def_dynamic
2440 && !h->def_regular)
2441 || (htab->elf.dynamic_sections_created
2442 && (h->root.type == bfd_link_hash_undefweak
2443 || h->root.type == bfd_link_hash_undefined))))
2444 {
2445 /* Make sure this symbol is output as a dynamic symbol.
2446 Undefined weak syms won't yet be marked as dynamic. */
2447 if (h->dynindx == -1
2448 && !h->forced_local)
2449 {
2450 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2451 return FALSE;
2452 }
2453
2454 /* If that succeeded, we know we'll be keeping all the
2455 relocs. */
2456 if (h->dynindx != -1)
2457 goto keep;
2458 }
2459
2460 eh->dyn_relocs = NULL;
2461
2462 keep: ;
2463 }
2464
2465 /* Finally, allocate space. */
2466 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2467 {
2468 asection *sreloc = elf_section_data (p->sec)->sreloc;
2469 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2470 }
2471
2472 return TRUE;
2473 }
2474
2475 /* Allocate space in .plt, .got and associated reloc sections for
2476 local dynamic relocs. */
2477
2478 static bfd_boolean
2479 allocate_local_dynrelocs (void **slot, void *inf)
2480 {
2481 struct elf_link_hash_entry *h
2482 = (struct elf_link_hash_entry *) *slot;
2483
2484 if (h->type != STT_GNU_IFUNC
2485 || !h->def_regular
2486 || !h->ref_regular
2487 || !h->forced_local
2488 || h->root.type != bfd_link_hash_defined)
2489 abort ();
2490
2491 return allocate_dynrelocs (h, inf);
2492 }
2493
2494 /* Find any dynamic relocs that apply to read-only sections. */
2495
2496 static bfd_boolean
2497 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2498 {
2499 struct _bfd_sparc_elf_link_hash_entry *eh;
2500 struct _bfd_sparc_elf_dyn_relocs *p;
2501
2502 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2503 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2504 {
2505 asection *s = p->sec->output_section;
2506
2507 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2508 {
2509 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2510
2511 info->flags |= DF_TEXTREL;
2512
2513 /* Not an error, just cut short the traversal. */
2514 return FALSE;
2515 }
2516 }
2517 return TRUE;
2518 }
2519
2520 /* Return true if the dynamic symbol for a given section should be
2521 omitted when creating a shared library. */
2522
2523 bfd_boolean
2524 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2525 struct bfd_link_info *info,
2526 asection *p)
2527 {
2528 /* We keep the .got section symbol so that explicit relocations
2529 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2530 can be turned into relocations against the .got symbol. */
2531 if (strcmp (p->name, ".got") == 0)
2532 return FALSE;
2533
2534 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2535 }
2536
2537 /* Set the sizes of the dynamic sections. */
2538
2539 bfd_boolean
2540 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2541 struct bfd_link_info *info)
2542 {
2543 struct _bfd_sparc_elf_link_hash_table *htab;
2544 bfd *dynobj;
2545 asection *s;
2546 bfd *ibfd;
2547
2548 htab = _bfd_sparc_elf_hash_table (info);
2549 BFD_ASSERT (htab != NULL);
2550 dynobj = htab->elf.dynobj;
2551 BFD_ASSERT (dynobj != NULL);
2552
2553 if (elf_hash_table (info)->dynamic_sections_created)
2554 {
2555 /* Set the contents of the .interp section to the interpreter. */
2556 if (info->executable)
2557 {
2558 s = bfd_get_linker_section (dynobj, ".interp");
2559 BFD_ASSERT (s != NULL);
2560 s->size = htab->dynamic_interpreter_size;
2561 s->contents = (unsigned char *) htab->dynamic_interpreter;
2562 }
2563 }
2564
2565 /* Set up .got offsets for local syms, and space for local dynamic
2566 relocs. */
2567 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2568 {
2569 bfd_signed_vma *local_got;
2570 bfd_signed_vma *end_local_got;
2571 char *local_tls_type;
2572 bfd_size_type locsymcount;
2573 Elf_Internal_Shdr *symtab_hdr;
2574 asection *srel;
2575
2576 if (! is_sparc_elf (ibfd))
2577 continue;
2578
2579 for (s = ibfd->sections; s != NULL; s = s->next)
2580 {
2581 struct _bfd_sparc_elf_dyn_relocs *p;
2582
2583 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2584 {
2585 if (!bfd_is_abs_section (p->sec)
2586 && bfd_is_abs_section (p->sec->output_section))
2587 {
2588 /* Input section has been discarded, either because
2589 it is a copy of a linkonce section or due to
2590 linker script /DISCARD/, so we'll be discarding
2591 the relocs too. */
2592 }
2593 else if (htab->is_vxworks
2594 && strcmp (p->sec->output_section->name,
2595 ".tls_vars") == 0)
2596 {
2597 /* Relocations in vxworks .tls_vars sections are
2598 handled specially by the loader. */
2599 }
2600 else if (p->count != 0)
2601 {
2602 srel = elf_section_data (p->sec)->sreloc;
2603 if (!htab->elf.dynamic_sections_created)
2604 srel = htab->elf.irelplt;
2605 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2606 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2607 info->flags |= DF_TEXTREL;
2608 }
2609 }
2610 }
2611
2612 local_got = elf_local_got_refcounts (ibfd);
2613 if (!local_got)
2614 continue;
2615
2616 symtab_hdr = &elf_symtab_hdr (ibfd);
2617 locsymcount = symtab_hdr->sh_info;
2618 end_local_got = local_got + locsymcount;
2619 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2620 s = htab->elf.sgot;
2621 srel = htab->elf.srelgot;
2622 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2623 {
2624 if (*local_got > 0)
2625 {
2626 *local_got = s->size;
2627 s->size += SPARC_ELF_WORD_BYTES (htab);
2628 if (*local_tls_type == GOT_TLS_GD)
2629 s->size += SPARC_ELF_WORD_BYTES (htab);
2630 if (info->shared
2631 || *local_tls_type == GOT_TLS_GD
2632 || *local_tls_type == GOT_TLS_IE)
2633 srel->size += SPARC_ELF_RELA_BYTES (htab);
2634 }
2635 else
2636 *local_got = (bfd_vma) -1;
2637 }
2638 }
2639
2640 if (htab->tls_ldm_got.refcount > 0)
2641 {
2642 /* Allocate 2 got entries and 1 dynamic reloc for
2643 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2644 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2645 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2646 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2647 }
2648 else
2649 htab->tls_ldm_got.offset = -1;
2650
2651 /* Allocate global sym .plt and .got entries, and space for global
2652 sym dynamic relocs. */
2653 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2654
2655 /* Allocate .plt and .got entries, and space for local symbols. */
2656 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2657
2658 if (! ABI_64_P (output_bfd)
2659 && !htab->is_vxworks
2660 && elf_hash_table (info)->dynamic_sections_created)
2661 {
2662 /* Make space for the trailing nop in .plt. */
2663 if (htab->elf.splt->size > 0)
2664 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2665
2666 /* If the .got section is more than 0x1000 bytes, we add
2667 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2668 bit relocations have a greater chance of working.
2669
2670 FIXME: Make this optimization work for 64-bit too. */
2671 if (htab->elf.sgot->size >= 0x1000
2672 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2673 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2674 }
2675
2676 /* The check_relocs and adjust_dynamic_symbol entry points have
2677 determined the sizes of the various dynamic sections. Allocate
2678 memory for them. */
2679 for (s = dynobj->sections; s != NULL; s = s->next)
2680 {
2681 if ((s->flags & SEC_LINKER_CREATED) == 0)
2682 continue;
2683
2684 if (s == htab->elf.splt
2685 || s == htab->elf.sgot
2686 || s == htab->sdynbss
2687 || s == htab->elf.iplt
2688 || s == htab->elf.sgotplt)
2689 {
2690 /* Strip this section if we don't need it; see the
2691 comment below. */
2692 }
2693 else if (CONST_STRNEQ (s->name, ".rela"))
2694 {
2695 if (s->size != 0)
2696 {
2697 /* We use the reloc_count field as a counter if we need
2698 to copy relocs into the output file. */
2699 s->reloc_count = 0;
2700 }
2701 }
2702 else
2703 {
2704 /* It's not one of our sections. */
2705 continue;
2706 }
2707
2708 if (s->size == 0)
2709 {
2710 /* If we don't need this section, strip it from the
2711 output file. This is mostly to handle .rela.bss and
2712 .rela.plt. We must create both sections in
2713 create_dynamic_sections, because they must be created
2714 before the linker maps input sections to output
2715 sections. The linker does that before
2716 adjust_dynamic_symbol is called, and it is that
2717 function which decides whether anything needs to go
2718 into these sections. */
2719 s->flags |= SEC_EXCLUDE;
2720 continue;
2721 }
2722
2723 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2724 continue;
2725
2726 /* Allocate memory for the section contents. Zero the memory
2727 for the benefit of .rela.plt, which has 4 unused entries
2728 at the beginning, and we don't want garbage. */
2729 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2730 if (s->contents == NULL)
2731 return FALSE;
2732 }
2733
2734 if (elf_hash_table (info)->dynamic_sections_created)
2735 {
2736 /* Add some entries to the .dynamic section. We fill in the
2737 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2738 must add the entries now so that we get the correct size for
2739 the .dynamic section. The DT_DEBUG entry is filled in by the
2740 dynamic linker and used by the debugger. */
2741 #define add_dynamic_entry(TAG, VAL) \
2742 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2743
2744 if (info->executable)
2745 {
2746 if (!add_dynamic_entry (DT_DEBUG, 0))
2747 return FALSE;
2748 }
2749
2750 if (htab->elf.srelplt->size != 0)
2751 {
2752 if (!add_dynamic_entry (DT_PLTGOT, 0)
2753 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2754 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2755 || !add_dynamic_entry (DT_JMPREL, 0))
2756 return FALSE;
2757 }
2758
2759 if (!add_dynamic_entry (DT_RELA, 0)
2760 || !add_dynamic_entry (DT_RELASZ, 0)
2761 || !add_dynamic_entry (DT_RELAENT,
2762 SPARC_ELF_RELA_BYTES (htab)))
2763 return FALSE;
2764
2765 /* If any dynamic relocs apply to a read-only section,
2766 then we need a DT_TEXTREL entry. */
2767 if ((info->flags & DF_TEXTREL) == 0)
2768 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2769
2770 if (info->flags & DF_TEXTREL)
2771 {
2772 if (!add_dynamic_entry (DT_TEXTREL, 0))
2773 return FALSE;
2774 }
2775
2776 if (ABI_64_P (output_bfd))
2777 {
2778 int reg;
2779 struct _bfd_sparc_elf_app_reg * app_regs;
2780 struct elf_strtab_hash *dynstr;
2781 struct elf_link_hash_table *eht = elf_hash_table (info);
2782
2783 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2784 entries if needed. */
2785 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2786 dynstr = eht->dynstr;
2787
2788 for (reg = 0; reg < 4; reg++)
2789 if (app_regs [reg].name != NULL)
2790 {
2791 struct elf_link_local_dynamic_entry *entry, *e;
2792
2793 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2794 return FALSE;
2795
2796 entry = (struct elf_link_local_dynamic_entry *)
2797 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2798 if (entry == NULL)
2799 return FALSE;
2800
2801 /* We cheat here a little bit: the symbol will not be local, so we
2802 put it at the end of the dynlocal linked list. We will fix it
2803 later on, as we have to fix other fields anyway. */
2804 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2805 entry->isym.st_size = 0;
2806 if (*app_regs [reg].name != '\0')
2807 entry->isym.st_name
2808 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2809 else
2810 entry->isym.st_name = 0;
2811 entry->isym.st_other = 0;
2812 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2813 STT_REGISTER);
2814 entry->isym.st_shndx = app_regs [reg].shndx;
2815 entry->isym.st_target_internal = 0;
2816 entry->next = NULL;
2817 entry->input_bfd = output_bfd;
2818 entry->input_indx = -1;
2819
2820 if (eht->dynlocal == NULL)
2821 eht->dynlocal = entry;
2822 else
2823 {
2824 for (e = eht->dynlocal; e->next; e = e->next)
2825 ;
2826 e->next = entry;
2827 }
2828 eht->dynsymcount++;
2829 }
2830 }
2831 if (htab->is_vxworks
2832 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2833 return FALSE;
2834 }
2835 #undef add_dynamic_entry
2836
2837 return TRUE;
2838 }
2839 \f
2840 bfd_boolean
2841 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2842 {
2843 if (!sec->used_by_bfd)
2844 {
2845 struct _bfd_sparc_elf_section_data *sdata;
2846 bfd_size_type amt = sizeof (*sdata);
2847
2848 sdata = bfd_zalloc (abfd, amt);
2849 if (sdata == NULL)
2850 return FALSE;
2851 sec->used_by_bfd = sdata;
2852 }
2853
2854 return _bfd_elf_new_section_hook (abfd, sec);
2855 }
2856
2857 bfd_boolean
2858 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2859 struct bfd_section *section,
2860 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2861 bfd_boolean *again)
2862 {
2863 if (link_info->relocatable)
2864 (*link_info->callbacks->einfo)
2865 (_("%P%F: --relax and -r may not be used together\n"));
2866
2867 *again = FALSE;
2868 sec_do_relax (section) = 1;
2869 return TRUE;
2870 }
2871 \f
2872 /* Return the base VMA address which should be subtracted from real addresses
2873 when resolving @dtpoff relocation.
2874 This is PT_TLS segment p_vaddr. */
2875
2876 static bfd_vma
2877 dtpoff_base (struct bfd_link_info *info)
2878 {
2879 /* If tls_sec is NULL, we should have signalled an error already. */
2880 if (elf_hash_table (info)->tls_sec == NULL)
2881 return 0;
2882 return elf_hash_table (info)->tls_sec->vma;
2883 }
2884
2885 /* Return the relocation value for @tpoff relocation
2886 if STT_TLS virtual address is ADDRESS. */
2887
2888 static bfd_vma
2889 tpoff (struct bfd_link_info *info, bfd_vma address)
2890 {
2891 struct elf_link_hash_table *htab = elf_hash_table (info);
2892 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2893 bfd_vma static_tls_size;
2894
2895 /* If tls_sec is NULL, we should have signalled an error already. */
2896 if (htab->tls_sec == NULL)
2897 return 0;
2898
2899 /* Consider special static TLS alignment requirements. */
2900 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2901 return address - static_tls_size - htab->tls_sec->vma;
2902 }
2903
2904 /* Return the relocation value for a %gdop relocation. */
2905
2906 static bfd_vma
2907 gdopoff (struct bfd_link_info *info, bfd_vma address)
2908 {
2909 struct elf_link_hash_table *htab = elf_hash_table (info);
2910 bfd_vma got_base;
2911
2912 got_base = (htab->hgot->root.u.def.value
2913 + htab->hgot->root.u.def.section->output_offset
2914 + htab->hgot->root.u.def.section->output_section->vma);
2915
2916 return address - got_base;
2917 }
2918
2919 /* Relocate a SPARC ELF section. */
2920
2921 bfd_boolean
2922 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2923 struct bfd_link_info *info,
2924 bfd *input_bfd,
2925 asection *input_section,
2926 bfd_byte *contents,
2927 Elf_Internal_Rela *relocs,
2928 Elf_Internal_Sym *local_syms,
2929 asection **local_sections)
2930 {
2931 struct _bfd_sparc_elf_link_hash_table *htab;
2932 Elf_Internal_Shdr *symtab_hdr;
2933 struct elf_link_hash_entry **sym_hashes;
2934 bfd_vma *local_got_offsets;
2935 bfd_vma got_base;
2936 asection *sreloc;
2937 Elf_Internal_Rela *rel;
2938 Elf_Internal_Rela *relend;
2939 int num_relocs;
2940 bfd_boolean is_vxworks_tls;
2941
2942 htab = _bfd_sparc_elf_hash_table (info);
2943 BFD_ASSERT (htab != NULL);
2944 symtab_hdr = &elf_symtab_hdr (input_bfd);
2945 sym_hashes = elf_sym_hashes (input_bfd);
2946 local_got_offsets = elf_local_got_offsets (input_bfd);
2947
2948 if (elf_hash_table (info)->hgot == NULL)
2949 got_base = 0;
2950 else
2951 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2952
2953 sreloc = elf_section_data (input_section)->sreloc;
2954 /* We have to handle relocations in vxworks .tls_vars sections
2955 specially, because the dynamic loader is 'weird'. */
2956 is_vxworks_tls = (htab->is_vxworks && info->shared
2957 && !strcmp (input_section->output_section->name,
2958 ".tls_vars"));
2959
2960 rel = relocs;
2961 if (ABI_64_P (output_bfd))
2962 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2963 else
2964 num_relocs = input_section->reloc_count;
2965 relend = relocs + num_relocs;
2966 for (; rel < relend; rel++)
2967 {
2968 int r_type, tls_type;
2969 reloc_howto_type *howto;
2970 unsigned long r_symndx;
2971 struct elf_link_hash_entry *h;
2972 Elf_Internal_Sym *sym;
2973 asection *sec;
2974 bfd_vma relocation, off;
2975 bfd_reloc_status_type r;
2976 bfd_boolean is_plt = FALSE;
2977 bfd_boolean unresolved_reloc;
2978
2979 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2980 if (r_type == R_SPARC_GNU_VTINHERIT
2981 || r_type == R_SPARC_GNU_VTENTRY)
2982 continue;
2983
2984 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2985 {
2986 bfd_set_error (bfd_error_bad_value);
2987 return FALSE;
2988 }
2989 howto = _bfd_sparc_elf_howto_table + r_type;
2990
2991 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2992 h = NULL;
2993 sym = NULL;
2994 sec = NULL;
2995 unresolved_reloc = FALSE;
2996 if (r_symndx < symtab_hdr->sh_info)
2997 {
2998 sym = local_syms + r_symndx;
2999 sec = local_sections[r_symndx];
3000 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3001
3002 if (!info->relocatable
3003 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3004 {
3005 /* Relocate against local STT_GNU_IFUNC symbol. */
3006 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3007 rel, FALSE);
3008 if (h == NULL)
3009 abort ();
3010
3011 /* Set STT_GNU_IFUNC symbol value. */
3012 h->root.u.def.value = sym->st_value;
3013 h->root.u.def.section = sec;
3014 }
3015 }
3016 else
3017 {
3018 bfd_boolean warned;
3019
3020 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3021 r_symndx, symtab_hdr, sym_hashes,
3022 h, sec, relocation,
3023 unresolved_reloc, warned);
3024 if (warned)
3025 {
3026 /* To avoid generating warning messages about truncated
3027 relocations, set the relocation's address to be the same as
3028 the start of this section. */
3029 if (input_section->output_section != NULL)
3030 relocation = input_section->output_section->vma;
3031 else
3032 relocation = 0;
3033 }
3034 }
3035
3036 if (sec != NULL && discarded_section (sec))
3037 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3038 rel, 1, relend, howto, 0, contents);
3039
3040 if (info->relocatable)
3041 continue;
3042
3043 if (h != NULL
3044 && h->type == STT_GNU_IFUNC
3045 && h->def_regular)
3046 {
3047 asection *plt_sec;
3048 const char *name;
3049
3050 if ((input_section->flags & SEC_ALLOC) == 0
3051 || h->plt.offset == (bfd_vma) -1)
3052 abort ();
3053
3054 plt_sec = htab->elf.splt;
3055 if (! plt_sec)
3056 plt_sec =htab->elf.iplt;
3057
3058 switch (r_type)
3059 {
3060 case R_SPARC_GOTDATA_OP:
3061 continue;
3062
3063 case R_SPARC_GOTDATA_OP_HIX22:
3064 case R_SPARC_GOTDATA_OP_LOX10:
3065 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3066 ? R_SPARC_GOT22
3067 : R_SPARC_GOT10);
3068 howto = _bfd_sparc_elf_howto_table + r_type;
3069 /* Fall through. */
3070
3071 case R_SPARC_GOT10:
3072 case R_SPARC_GOT13:
3073 case R_SPARC_GOT22:
3074 if (htab->elf.sgot == NULL)
3075 abort ();
3076 off = h->got.offset;
3077 if (off == (bfd_vma) -1)
3078 abort();
3079 relocation = htab->elf.sgot->output_offset + off - got_base;
3080 goto do_relocation;
3081
3082 case R_SPARC_WPLT30:
3083 case R_SPARC_WDISP30:
3084 relocation = (plt_sec->output_section->vma
3085 + plt_sec->output_offset + h->plt.offset);
3086 goto do_relocation;
3087
3088 case R_SPARC_32:
3089 case R_SPARC_64:
3090 if (info->shared && h->non_got_ref)
3091 {
3092 Elf_Internal_Rela outrel;
3093 bfd_vma offset;
3094
3095 offset = _bfd_elf_section_offset (output_bfd, info,
3096 input_section,
3097 rel->r_offset);
3098 if (offset == (bfd_vma) -1
3099 || offset == (bfd_vma) -2)
3100 abort();
3101
3102 outrel.r_offset = (input_section->output_section->vma
3103 + input_section->output_offset
3104 + offset);
3105
3106 if (h->dynindx == -1
3107 || h->forced_local
3108 || info->executable)
3109 {
3110 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3111 0, R_SPARC_IRELATIVE);
3112 outrel.r_addend = relocation + rel->r_addend;
3113 }
3114 else
3115 {
3116 if (h->dynindx == -1)
3117 abort();
3118 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3119 outrel.r_addend = rel->r_addend;
3120 }
3121
3122 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3123 continue;
3124 }
3125
3126 relocation = (plt_sec->output_section->vma
3127 + plt_sec->output_offset + h->plt.offset);
3128 goto do_relocation;
3129
3130 case R_SPARC_HI22:
3131 case R_SPARC_LO10:
3132 /* We should only see such relocs in static links. */
3133 if (info->shared)
3134 abort();
3135 relocation = (plt_sec->output_section->vma
3136 + plt_sec->output_offset + h->plt.offset);
3137 goto do_relocation;
3138
3139 default:
3140 if (h->root.root.string)
3141 name = h->root.root.string;
3142 else
3143 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3144 NULL);
3145 (*_bfd_error_handler)
3146 (_("%B: relocation %s against STT_GNU_IFUNC "
3147 "symbol `%s' isn't handled by %s"), input_bfd,
3148 _bfd_sparc_elf_howto_table[r_type].name,
3149 name, __FUNCTION__);
3150 bfd_set_error (bfd_error_bad_value);
3151 return FALSE;
3152 }
3153 }
3154
3155 switch (r_type)
3156 {
3157 case R_SPARC_GOTDATA_OP_HIX22:
3158 case R_SPARC_GOTDATA_OP_LOX10:
3159 if (SYMBOL_REFERENCES_LOCAL (info, h))
3160 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3161 ? R_SPARC_GOTDATA_HIX22
3162 : R_SPARC_GOTDATA_LOX10);
3163 else
3164 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3165 ? R_SPARC_GOT22
3166 : R_SPARC_GOT10);
3167 howto = _bfd_sparc_elf_howto_table + r_type;
3168 break;
3169
3170 case R_SPARC_GOTDATA_OP:
3171 if (SYMBOL_REFERENCES_LOCAL (info, h))
3172 {
3173 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3174
3175 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3176 relocation = 0x80000000 | (insn & 0x3e07c01f);
3177 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3178 }
3179 continue;
3180 }
3181
3182 switch (r_type)
3183 {
3184 case R_SPARC_GOTDATA_HIX22:
3185 case R_SPARC_GOTDATA_LOX10:
3186 relocation = gdopoff (info, relocation);
3187 break;
3188
3189 case R_SPARC_GOT10:
3190 case R_SPARC_GOT13:
3191 case R_SPARC_GOT22:
3192 /* Relocation is to the entry for this symbol in the global
3193 offset table. */
3194 if (htab->elf.sgot == NULL)
3195 abort ();
3196
3197 if (h != NULL)
3198 {
3199 bfd_boolean dyn;
3200
3201 off = h->got.offset;
3202 BFD_ASSERT (off != (bfd_vma) -1);
3203 dyn = elf_hash_table (info)->dynamic_sections_created;
3204
3205 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3206 || (info->shared
3207 && SYMBOL_REFERENCES_LOCAL (info, h)))
3208 {
3209 /* This is actually a static link, or it is a
3210 -Bsymbolic link and the symbol is defined
3211 locally, or the symbol was forced to be local
3212 because of a version file. We must initialize
3213 this entry in the global offset table. Since the
3214 offset must always be a multiple of 8 for 64-bit
3215 and 4 for 32-bit, we use the least significant bit
3216 to record whether we have initialized it already.
3217
3218 When doing a dynamic link, we create a .rela.got
3219 relocation entry to initialize the value. This
3220 is done in the finish_dynamic_symbol routine. */
3221 if ((off & 1) != 0)
3222 off &= ~1;
3223 else
3224 {
3225 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3226 htab->elf.sgot->contents + off);
3227 h->got.offset |= 1;
3228 }
3229 }
3230 else
3231 unresolved_reloc = FALSE;
3232 }
3233 else
3234 {
3235 BFD_ASSERT (local_got_offsets != NULL
3236 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3237
3238 off = local_got_offsets[r_symndx];
3239
3240 /* The offset must always be a multiple of 8 on 64-bit and
3241 4 on 32-bit. We use the least significant bit to record
3242 whether we have already processed this entry. */
3243 if ((off & 1) != 0)
3244 off &= ~1;
3245 else
3246 {
3247
3248 if (info->shared)
3249 {
3250 asection *s;
3251 Elf_Internal_Rela outrel;
3252
3253 /* We need to generate a R_SPARC_RELATIVE reloc
3254 for the dynamic linker. */
3255 s = htab->elf.srelgot;
3256 BFD_ASSERT (s != NULL);
3257
3258 outrel.r_offset = (htab->elf.sgot->output_section->vma
3259 + htab->elf.sgot->output_offset
3260 + off);
3261 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3262 0, R_SPARC_RELATIVE);
3263 outrel.r_addend = relocation;
3264 relocation = 0;
3265 sparc_elf_append_rela (output_bfd, s, &outrel);
3266 }
3267
3268 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3269 htab->elf.sgot->contents + off);
3270 local_got_offsets[r_symndx] |= 1;
3271 }
3272 }
3273 relocation = htab->elf.sgot->output_offset + off - got_base;
3274 break;
3275
3276 case R_SPARC_PLT32:
3277 case R_SPARC_PLT64:
3278 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3279 {
3280 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3281 goto r_sparc_plt32;
3282 }
3283 /* Fall through. */
3284
3285 case R_SPARC_WPLT30:
3286 case R_SPARC_HIPLT22:
3287 case R_SPARC_LOPLT10:
3288 case R_SPARC_PCPLT32:
3289 case R_SPARC_PCPLT22:
3290 case R_SPARC_PCPLT10:
3291 r_sparc_wplt30:
3292 /* Relocation is to the entry for this symbol in the
3293 procedure linkage table. */
3294
3295 if (! ABI_64_P (output_bfd))
3296 {
3297 /* The Solaris native assembler will generate a WPLT30 reloc
3298 for a local symbol if you assemble a call from one
3299 section to another when using -K pic. We treat it as
3300 WDISP30. */
3301 if (h == NULL)
3302 break;
3303 }
3304 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3305 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3306 break;
3307 else
3308 {
3309 BFD_ASSERT (h != NULL);
3310 }
3311
3312 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3313 {
3314 /* We didn't make a PLT entry for this symbol. This
3315 happens when statically linking PIC code, or when
3316 using -Bsymbolic. */
3317 break;
3318 }
3319
3320 relocation = (htab->elf.splt->output_section->vma
3321 + htab->elf.splt->output_offset
3322 + h->plt.offset);
3323 unresolved_reloc = FALSE;
3324 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3325 {
3326 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3327 is_plt = TRUE;
3328 goto r_sparc_plt32;
3329 }
3330 break;
3331
3332 case R_SPARC_PC10:
3333 case R_SPARC_PC22:
3334 case R_SPARC_PC_HH22:
3335 case R_SPARC_PC_HM10:
3336 case R_SPARC_PC_LM22:
3337 if (h != NULL
3338 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3339 break;
3340 /* Fall through. */
3341 case R_SPARC_DISP8:
3342 case R_SPARC_DISP16:
3343 case R_SPARC_DISP32:
3344 case R_SPARC_DISP64:
3345 case R_SPARC_WDISP30:
3346 case R_SPARC_WDISP22:
3347 case R_SPARC_WDISP19:
3348 case R_SPARC_WDISP16:
3349 case R_SPARC_WDISP10:
3350 case R_SPARC_8:
3351 case R_SPARC_16:
3352 case R_SPARC_32:
3353 case R_SPARC_HI22:
3354 case R_SPARC_22:
3355 case R_SPARC_13:
3356 case R_SPARC_LO10:
3357 case R_SPARC_UA16:
3358 case R_SPARC_UA32:
3359 case R_SPARC_10:
3360 case R_SPARC_11:
3361 case R_SPARC_64:
3362 case R_SPARC_OLO10:
3363 case R_SPARC_HH22:
3364 case R_SPARC_HM10:
3365 case R_SPARC_LM22:
3366 case R_SPARC_7:
3367 case R_SPARC_5:
3368 case R_SPARC_6:
3369 case R_SPARC_HIX22:
3370 case R_SPARC_LOX10:
3371 case R_SPARC_H44:
3372 case R_SPARC_M44:
3373 case R_SPARC_L44:
3374 case R_SPARC_H34:
3375 case R_SPARC_UA64:
3376 r_sparc_plt32:
3377 if ((input_section->flags & SEC_ALLOC) == 0
3378 || is_vxworks_tls)
3379 break;
3380
3381 if ((info->shared
3382 && (h == NULL
3383 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3384 || h->root.type != bfd_link_hash_undefweak)
3385 && (! howto->pc_relative
3386 || !SYMBOL_CALLS_LOCAL (info, h)))
3387 || (!info->shared
3388 && h != NULL
3389 && h->dynindx != -1
3390 && !h->non_got_ref
3391 && ((h->def_dynamic
3392 && !h->def_regular)
3393 || h->root.type == bfd_link_hash_undefweak
3394 || h->root.type == bfd_link_hash_undefined)))
3395 {
3396 Elf_Internal_Rela outrel;
3397 bfd_boolean skip, relocate = FALSE;
3398
3399 /* When generating a shared object, these relocations
3400 are copied into the output file to be resolved at run
3401 time. */
3402
3403 BFD_ASSERT (sreloc != NULL);
3404
3405 skip = FALSE;
3406
3407 outrel.r_offset =
3408 _bfd_elf_section_offset (output_bfd, info, input_section,
3409 rel->r_offset);
3410 if (outrel.r_offset == (bfd_vma) -1)
3411 skip = TRUE;
3412 else if (outrel.r_offset == (bfd_vma) -2)
3413 skip = TRUE, relocate = TRUE;
3414 outrel.r_offset += (input_section->output_section->vma
3415 + input_section->output_offset);
3416
3417 /* Optimize unaligned reloc usage now that we know where
3418 it finally resides. */
3419 switch (r_type)
3420 {
3421 case R_SPARC_16:
3422 if (outrel.r_offset & 1)
3423 r_type = R_SPARC_UA16;
3424 break;
3425 case R_SPARC_UA16:
3426 if (!(outrel.r_offset & 1))
3427 r_type = R_SPARC_16;
3428 break;
3429 case R_SPARC_32:
3430 if (outrel.r_offset & 3)
3431 r_type = R_SPARC_UA32;
3432 break;
3433 case R_SPARC_UA32:
3434 if (!(outrel.r_offset & 3))
3435 r_type = R_SPARC_32;
3436 break;
3437 case R_SPARC_64:
3438 if (outrel.r_offset & 7)
3439 r_type = R_SPARC_UA64;
3440 break;
3441 case R_SPARC_UA64:
3442 if (!(outrel.r_offset & 7))
3443 r_type = R_SPARC_64;
3444 break;
3445 case R_SPARC_DISP8:
3446 case R_SPARC_DISP16:
3447 case R_SPARC_DISP32:
3448 case R_SPARC_DISP64:
3449 /* If the symbol is not dynamic, we should not keep
3450 a dynamic relocation. But an .rela.* slot has been
3451 allocated for it, output R_SPARC_NONE.
3452 FIXME: Add code tracking needed dynamic relocs as
3453 e.g. i386 has. */
3454 if (h->dynindx == -1)
3455 skip = TRUE, relocate = TRUE;
3456 break;
3457 }
3458
3459 if (skip)
3460 memset (&outrel, 0, sizeof outrel);
3461 /* h->dynindx may be -1 if the symbol was marked to
3462 become local. */
3463 else if (h != NULL &&
3464 h->dynindx != -1
3465 && (! is_plt
3466 || !info->shared
3467 || !SYMBOLIC_BIND (info, h)
3468 || !h->def_regular))
3469 {
3470 BFD_ASSERT (h->dynindx != -1);
3471 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3472 outrel.r_addend = rel->r_addend;
3473 }
3474 else
3475 {
3476 if (r_type == R_SPARC_32 || r_type == R_SPARC_64)
3477 {
3478 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3479 0, R_SPARC_RELATIVE);
3480 outrel.r_addend = relocation + rel->r_addend;
3481 }
3482 else
3483 {
3484 long indx;
3485
3486 outrel.r_addend = relocation + rel->r_addend;
3487
3488 if (is_plt)
3489 sec = htab->elf.splt;
3490
3491 if (bfd_is_abs_section (sec))
3492 indx = 0;
3493 else if (sec == NULL || sec->owner == NULL)
3494 {
3495 bfd_set_error (bfd_error_bad_value);
3496 return FALSE;
3497 }
3498 else
3499 {
3500 asection *osec;
3501
3502 /* We are turning this relocation into one
3503 against a section symbol. It would be
3504 proper to subtract the symbol's value,
3505 osec->vma, from the emitted reloc addend,
3506 but ld.so expects buggy relocs. */
3507 osec = sec->output_section;
3508 indx = elf_section_data (osec)->dynindx;
3509
3510 if (indx == 0)
3511 {
3512 osec = htab->elf.text_index_section;
3513 indx = elf_section_data (osec)->dynindx;
3514 }
3515
3516 /* FIXME: we really should be able to link non-pic
3517 shared libraries. */
3518 if (indx == 0)
3519 {
3520 BFD_FAIL ();
3521 (*_bfd_error_handler)
3522 (_("%B: probably compiled without -fPIC?"),
3523 input_bfd);
3524 bfd_set_error (bfd_error_bad_value);
3525 return FALSE;
3526 }
3527 }
3528
3529 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3530 r_type);
3531 }
3532 }
3533
3534 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3535
3536 /* This reloc will be computed at runtime, so there's no
3537 need to do anything now. */
3538 if (! relocate)
3539 continue;
3540 }
3541 break;
3542
3543 case R_SPARC_TLS_GD_HI22:
3544 if (! ABI_64_P (input_bfd)
3545 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3546 {
3547 /* R_SPARC_REV32 used the same reloc number as
3548 R_SPARC_TLS_GD_HI22. */
3549 r_type = R_SPARC_REV32;
3550 break;
3551 }
3552 /* Fall through */
3553
3554 case R_SPARC_TLS_GD_LO10:
3555 case R_SPARC_TLS_IE_HI22:
3556 case R_SPARC_TLS_IE_LO10:
3557 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3558 tls_type = GOT_UNKNOWN;
3559 if (h == NULL && local_got_offsets)
3560 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3561 else if (h != NULL)
3562 {
3563 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3564 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3565 switch (SPARC_ELF_R_TYPE (rel->r_info))
3566 {
3567 case R_SPARC_TLS_GD_HI22:
3568 case R_SPARC_TLS_IE_HI22:
3569 r_type = R_SPARC_TLS_LE_HIX22;
3570 break;
3571 default:
3572 r_type = R_SPARC_TLS_LE_LOX10;
3573 break;
3574 }
3575 }
3576 if (tls_type == GOT_TLS_IE)
3577 switch (r_type)
3578 {
3579 case R_SPARC_TLS_GD_HI22:
3580 r_type = R_SPARC_TLS_IE_HI22;
3581 break;
3582 case R_SPARC_TLS_GD_LO10:
3583 r_type = R_SPARC_TLS_IE_LO10;
3584 break;
3585 }
3586
3587 if (r_type == R_SPARC_TLS_LE_HIX22)
3588 {
3589 relocation = tpoff (info, relocation);
3590 break;
3591 }
3592 if (r_type == R_SPARC_TLS_LE_LOX10)
3593 {
3594 /* Change add into xor. */
3595 relocation = tpoff (info, relocation);
3596 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3597 contents + rel->r_offset)
3598 | 0x80182000), contents + rel->r_offset);
3599 break;
3600 }
3601
3602 if (h != NULL)
3603 {
3604 off = h->got.offset;
3605 h->got.offset |= 1;
3606 }
3607 else
3608 {
3609 BFD_ASSERT (local_got_offsets != NULL);
3610 off = local_got_offsets[r_symndx];
3611 local_got_offsets[r_symndx] |= 1;
3612 }
3613
3614 r_sparc_tlsldm:
3615 if (htab->elf.sgot == NULL)
3616 abort ();
3617
3618 if ((off & 1) != 0)
3619 off &= ~1;
3620 else
3621 {
3622 Elf_Internal_Rela outrel;
3623 int dr_type, indx;
3624
3625 if (htab->elf.srelgot == NULL)
3626 abort ();
3627
3628 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3629 htab->elf.sgot->contents + off);
3630 outrel.r_offset = (htab->elf.sgot->output_section->vma
3631 + htab->elf.sgot->output_offset + off);
3632 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3633 if (r_type == R_SPARC_TLS_IE_HI22
3634 || r_type == R_SPARC_TLS_IE_LO10)
3635 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3636 else
3637 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3638 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3639 outrel.r_addend = relocation - dtpoff_base (info);
3640 else
3641 outrel.r_addend = 0;
3642 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3643 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3644
3645 if (r_type == R_SPARC_TLS_GD_HI22
3646 || r_type == R_SPARC_TLS_GD_LO10)
3647 {
3648 if (indx == 0)
3649 {
3650 BFD_ASSERT (! unresolved_reloc);
3651 SPARC_ELF_PUT_WORD (htab, output_bfd,
3652 relocation - dtpoff_base (info),
3653 (htab->elf.sgot->contents + off
3654 + SPARC_ELF_WORD_BYTES (htab)));
3655 }
3656 else
3657 {
3658 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3659 (htab->elf.sgot->contents + off
3660 + SPARC_ELF_WORD_BYTES (htab)));
3661 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3662 SPARC_ELF_DTPOFF_RELOC (htab));
3663 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3664 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3665 &outrel);
3666 }
3667 }
3668 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3669 {
3670 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3671 (htab->elf.sgot->contents + off
3672 + SPARC_ELF_WORD_BYTES (htab)));
3673 }
3674 }
3675
3676 if (off >= (bfd_vma) -2)
3677 abort ();
3678
3679 relocation = htab->elf.sgot->output_offset + off - got_base;
3680 unresolved_reloc = FALSE;
3681 howto = _bfd_sparc_elf_howto_table + r_type;
3682 break;
3683
3684 case R_SPARC_TLS_LDM_HI22:
3685 case R_SPARC_TLS_LDM_LO10:
3686 if (! info->shared)
3687 {
3688 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3689 continue;
3690 }
3691 off = htab->tls_ldm_got.offset;
3692 htab->tls_ldm_got.offset |= 1;
3693 goto r_sparc_tlsldm;
3694
3695 case R_SPARC_TLS_LDO_HIX22:
3696 case R_SPARC_TLS_LDO_LOX10:
3697 if (info->shared)
3698 {
3699 relocation -= dtpoff_base (info);
3700 break;
3701 }
3702
3703 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3704 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3705 /* Fall through. */
3706
3707 case R_SPARC_TLS_LE_HIX22:
3708 case R_SPARC_TLS_LE_LOX10:
3709 if (info->shared)
3710 {
3711 Elf_Internal_Rela outrel;
3712 bfd_boolean skip;
3713
3714 BFD_ASSERT (sreloc != NULL);
3715 skip = FALSE;
3716 outrel.r_offset =
3717 _bfd_elf_section_offset (output_bfd, info, input_section,
3718 rel->r_offset);
3719 if (outrel.r_offset == (bfd_vma) -1)
3720 skip = TRUE;
3721 else if (outrel.r_offset == (bfd_vma) -2)
3722 skip = TRUE;
3723 outrel.r_offset += (input_section->output_section->vma
3724 + input_section->output_offset);
3725 if (skip)
3726 memset (&outrel, 0, sizeof outrel);
3727 else
3728 {
3729 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3730 outrel.r_addend = relocation - dtpoff_base (info)
3731 + rel->r_addend;
3732 }
3733
3734 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3735 continue;
3736 }
3737 relocation = tpoff (info, relocation);
3738 break;
3739
3740 case R_SPARC_TLS_LDM_CALL:
3741 if (! info->shared)
3742 {
3743 /* mov %g0, %o0 */
3744 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3745 continue;
3746 }
3747 /* Fall through */
3748
3749 case R_SPARC_TLS_GD_CALL:
3750 tls_type = GOT_UNKNOWN;
3751 if (h == NULL && local_got_offsets)
3752 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3753 else if (h != NULL)
3754 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3755 if (! info->shared
3756 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3757 {
3758 Elf_Internal_Rela *rel2;
3759 bfd_vma insn;
3760
3761 if (!info->shared && (h == NULL || h->dynindx == -1))
3762 {
3763 /* GD -> LE */
3764 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3765 continue;
3766 }
3767
3768 /* GD -> IE */
3769 if (rel + 1 < relend
3770 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3771 && rel[1].r_offset == rel->r_offset + 4
3772 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3773 && (((insn = bfd_get_32 (input_bfd,
3774 contents + rel[1].r_offset))
3775 >> 25) & 0x1f) == 8)
3776 {
3777 /* We have
3778 call __tls_get_addr, %tgd_call(foo)
3779 add %reg1, %reg2, %o0, %tgd_add(foo)
3780 and change it into IE:
3781 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3782 add %g7, %o0, %o0, %tie_add(foo).
3783 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3784 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3785 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3786 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3787 contents + rel->r_offset);
3788 bfd_put_32 (output_bfd, 0x9001c008,
3789 contents + rel->r_offset + 4);
3790 rel++;
3791 continue;
3792 }
3793
3794 /* We cannot just overwrite the delay slot instruction,
3795 as it might be what puts the %o0 argument to
3796 __tls_get_addr into place. So we have to transpose
3797 the delay slot with the add we patch in. */
3798 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3799 bfd_put_32 (output_bfd, insn,
3800 contents + rel->r_offset);
3801 bfd_put_32 (output_bfd, 0x9001c008,
3802 contents + rel->r_offset + 4);
3803
3804 rel2 = rel;
3805 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3806 rel->r_offset + 4))
3807 != NULL)
3808 {
3809 /* If the instruction we moved has a relocation attached to
3810 it, adjust the offset so that it will apply to the correct
3811 instruction. */
3812 rel2->r_offset -= 4;
3813 }
3814 continue;
3815 }
3816
3817 h = (struct elf_link_hash_entry *)
3818 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3819 FALSE, TRUE);
3820 BFD_ASSERT (h != NULL);
3821 r_type = R_SPARC_WPLT30;
3822 howto = _bfd_sparc_elf_howto_table + r_type;
3823 goto r_sparc_wplt30;
3824
3825 case R_SPARC_TLS_GD_ADD:
3826 tls_type = GOT_UNKNOWN;
3827 if (h == NULL && local_got_offsets)
3828 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3829 else if (h != NULL)
3830 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3831 if (! info->shared || tls_type == GOT_TLS_IE)
3832 {
3833 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3834 changed into IE:
3835 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3836 or LE:
3837 add %g7, %reg2, %reg3. */
3838 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3839 if ((h != NULL && h->dynindx != -1) || info->shared)
3840 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3841 else
3842 relocation = (insn & ~0x7c000) | 0x1c000;
3843 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3844 }
3845 continue;
3846
3847 case R_SPARC_TLS_LDM_ADD:
3848 if (! info->shared)
3849 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3850 continue;
3851
3852 case R_SPARC_TLS_LDO_ADD:
3853 if (! info->shared)
3854 {
3855 /* Change rs1 into %g7. */
3856 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3857 insn = (insn & ~0x7c000) | 0x1c000;
3858 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3859 }
3860 continue;
3861
3862 case R_SPARC_TLS_IE_LD:
3863 case R_SPARC_TLS_IE_LDX:
3864 if (! info->shared && (h == NULL || h->dynindx == -1))
3865 {
3866 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3867 int rs2 = insn & 0x1f;
3868 int rd = (insn >> 25) & 0x1f;
3869
3870 if (rs2 == rd)
3871 relocation = SPARC_NOP;
3872 else
3873 relocation = 0x80100000 | (insn & 0x3e00001f);
3874 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3875 }
3876 continue;
3877
3878 case R_SPARC_TLS_IE_ADD:
3879 /* Totally useless relocation. */
3880 continue;
3881
3882 case R_SPARC_TLS_DTPOFF32:
3883 case R_SPARC_TLS_DTPOFF64:
3884 relocation -= dtpoff_base (info);
3885 break;
3886
3887 default:
3888 break;
3889 }
3890
3891 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3892 because such sections are not SEC_ALLOC and thus ld.so will
3893 not process them. */
3894 if (unresolved_reloc
3895 && !((input_section->flags & SEC_DEBUGGING) != 0
3896 && h->def_dynamic)
3897 && _bfd_elf_section_offset (output_bfd, info, input_section,
3898 rel->r_offset) != (bfd_vma) -1)
3899 (*_bfd_error_handler)
3900 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3901 input_bfd,
3902 input_section,
3903 (long) rel->r_offset,
3904 howto->name,
3905 h->root.root.string);
3906
3907 r = bfd_reloc_continue;
3908 if (r_type == R_SPARC_OLO10)
3909 {
3910 bfd_vma x;
3911
3912 if (! ABI_64_P (output_bfd))
3913 abort ();
3914
3915 relocation += rel->r_addend;
3916 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3917
3918 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3919 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3920 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3921
3922 r = bfd_check_overflow (howto->complain_on_overflow,
3923 howto->bitsize, howto->rightshift,
3924 bfd_arch_bits_per_address (input_bfd),
3925 relocation);
3926 }
3927 else if (r_type == R_SPARC_WDISP16)
3928 {
3929 bfd_vma x;
3930
3931 relocation += rel->r_addend;
3932 relocation -= (input_section->output_section->vma
3933 + input_section->output_offset);
3934 relocation -= rel->r_offset;
3935
3936 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3937 x |= ((((relocation >> 2) & 0xc000) << 6)
3938 | ((relocation >> 2) & 0x3fff));
3939 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3940
3941 r = bfd_check_overflow (howto->complain_on_overflow,
3942 howto->bitsize, howto->rightshift,
3943 bfd_arch_bits_per_address (input_bfd),
3944 relocation);
3945 }
3946 else if (r_type == R_SPARC_WDISP10)
3947 {
3948 bfd_vma x;
3949
3950 relocation += rel->r_addend;
3951 relocation -= (input_section->output_section->vma
3952 + input_section->output_offset);
3953 relocation -= rel->r_offset;
3954
3955 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3956 x |= ((((relocation >> 2) & 0x300) << 11)
3957 | (((relocation >> 2) & 0xff) << 5));
3958 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3959
3960 r = bfd_check_overflow (howto->complain_on_overflow,
3961 howto->bitsize, howto->rightshift,
3962 bfd_arch_bits_per_address (input_bfd),
3963 relocation);
3964 }
3965 else if (r_type == R_SPARC_REV32)
3966 {
3967 bfd_vma x;
3968
3969 relocation = relocation + rel->r_addend;
3970
3971 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3972 x = x + relocation;
3973 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3974 r = bfd_reloc_ok;
3975 }
3976 else if (r_type == R_SPARC_TLS_LDO_HIX22
3977 || r_type == R_SPARC_TLS_LE_HIX22)
3978 {
3979 bfd_vma x;
3980
3981 relocation += rel->r_addend;
3982 if (r_type == R_SPARC_TLS_LE_HIX22)
3983 relocation ^= MINUS_ONE;
3984
3985 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3986 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3987 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3988 r = bfd_reloc_ok;
3989 }
3990 else if (r_type == R_SPARC_TLS_LDO_LOX10
3991 || r_type == R_SPARC_TLS_LE_LOX10)
3992 {
3993 bfd_vma x;
3994
3995 relocation += rel->r_addend;
3996 relocation &= 0x3ff;
3997 if (r_type == R_SPARC_TLS_LE_LOX10)
3998 relocation |= 0x1c00;
3999
4000 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4001 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4002 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4003
4004 r = bfd_reloc_ok;
4005 }
4006 else if (r_type == R_SPARC_HIX22
4007 || r_type == R_SPARC_GOTDATA_HIX22)
4008 {
4009 bfd_vma x;
4010
4011 relocation += rel->r_addend;
4012 if (r_type == R_SPARC_HIX22
4013 || (bfd_signed_vma) relocation < 0)
4014 relocation = relocation ^ MINUS_ONE;
4015
4016 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4017 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4018 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4019
4020 r = bfd_check_overflow (howto->complain_on_overflow,
4021 howto->bitsize, howto->rightshift,
4022 bfd_arch_bits_per_address (input_bfd),
4023 relocation);
4024 }
4025 else if (r_type == R_SPARC_LOX10
4026 || r_type == R_SPARC_GOTDATA_LOX10)
4027 {
4028 bfd_vma x;
4029
4030 relocation += rel->r_addend;
4031 if (r_type == R_SPARC_LOX10
4032 || (bfd_signed_vma) relocation < 0)
4033 relocation = (relocation & 0x3ff) | 0x1c00;
4034 else
4035 relocation = (relocation & 0x3ff);
4036
4037 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4038 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4039 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4040
4041 r = bfd_reloc_ok;
4042 }
4043 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4044 && sec_do_relax (input_section)
4045 && rel->r_offset + 4 < input_section->size)
4046 {
4047 #define G0 0
4048 #define O7 15
4049 #define XCC (2 << 20)
4050 #define COND(x) (((x)&0xf)<<25)
4051 #define CONDA COND(0x8)
4052 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4053 #define INSN_BA (F2(0,2) | CONDA)
4054 #define INSN_OR F3(2, 0x2, 0)
4055 #define INSN_NOP F2(0,4)
4056
4057 bfd_vma x, y;
4058
4059 /* If the instruction is a call with either:
4060 restore
4061 arithmetic instruction with rd == %o7
4062 where rs1 != %o7 and rs2 if it is register != %o7
4063 then we can optimize if the call destination is near
4064 by changing the call into a branch always. */
4065 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4066 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4067 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4068 {
4069 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4070 || ((y & OP3(0x28)) == 0 /* arithmetic */
4071 && (y & RD(~0)) == RD(O7)))
4072 && (y & RS1(~0)) != RS1(O7)
4073 && ((y & F3I(~0))
4074 || (y & RS2(~0)) != RS2(O7)))
4075 {
4076 bfd_vma reloc;
4077
4078 reloc = relocation + rel->r_addend - rel->r_offset;
4079 reloc -= (input_section->output_section->vma
4080 + input_section->output_offset);
4081
4082 /* Ensure the branch fits into simm22. */
4083 if ((reloc & 3) == 0
4084 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4085 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4086 {
4087 reloc >>= 2;
4088
4089 /* Check whether it fits into simm19. */
4090 if (((reloc & 0x3c0000) == 0
4091 || (reloc & 0x3c0000) == 0x3c0000)
4092 && (ABI_64_P (output_bfd)
4093 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4094 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4095 else
4096 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4097 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4098 r = bfd_reloc_ok;
4099 if (rel->r_offset >= 4
4100 && (y & (0xffffffff ^ RS1(~0)))
4101 == (INSN_OR | RD(O7) | RS2(G0)))
4102 {
4103 bfd_vma z;
4104 unsigned int reg;
4105
4106 z = bfd_get_32 (input_bfd,
4107 contents + rel->r_offset - 4);
4108 if ((z & (0xffffffff ^ RD(~0)))
4109 != (INSN_OR | RS1(O7) | RS2(G0)))
4110 break;
4111
4112 /* The sequence was
4113 or %o7, %g0, %rN
4114 call foo
4115 or %rN, %g0, %o7
4116
4117 If call foo was replaced with ba, replace
4118 or %rN, %g0, %o7 with nop. */
4119
4120 reg = (y & RS1(~0)) >> 14;
4121 if (reg != ((z & RD(~0)) >> 25)
4122 || reg == G0 || reg == O7)
4123 break;
4124
4125 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4126 contents + rel->r_offset + 4);
4127 }
4128
4129 }
4130 }
4131 }
4132 }
4133
4134 if (r == bfd_reloc_continue)
4135 {
4136 do_relocation:
4137 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4138 contents, rel->r_offset,
4139 relocation, rel->r_addend);
4140 }
4141 if (r != bfd_reloc_ok)
4142 {
4143 switch (r)
4144 {
4145 default:
4146 case bfd_reloc_outofrange:
4147 abort ();
4148 case bfd_reloc_overflow:
4149 {
4150 const char *name;
4151
4152 /* The Solaris native linker silently disregards overflows.
4153 We don't, but this breaks stabs debugging info, whose
4154 relocations are only 32-bits wide. Ignore overflows in
4155 this case and also for discarded entries. */
4156 if ((r_type == R_SPARC_32
4157 || r_type == R_SPARC_UA32
4158 || r_type == R_SPARC_DISP32)
4159 && (((input_section->flags & SEC_DEBUGGING) != 0
4160 && strcmp (bfd_section_name (input_bfd,
4161 input_section),
4162 ".stab") == 0)
4163 || _bfd_elf_section_offset (output_bfd, info,
4164 input_section,
4165 rel->r_offset)
4166 == (bfd_vma)-1))
4167 break;
4168
4169 if (h != NULL)
4170 {
4171 /* Assume this is a call protected by other code that
4172 detect the symbol is undefined. If this is the case,
4173 we can safely ignore the overflow. If not, the
4174 program is hosed anyway, and a little warning isn't
4175 going to help. */
4176 if (h->root.type == bfd_link_hash_undefweak
4177 && howto->pc_relative)
4178 break;
4179
4180 name = NULL;
4181 }
4182 else
4183 {
4184 name = bfd_elf_string_from_elf_section (input_bfd,
4185 symtab_hdr->sh_link,
4186 sym->st_name);
4187 if (name == NULL)
4188 return FALSE;
4189 if (*name == '\0')
4190 name = bfd_section_name (input_bfd, sec);
4191 }
4192 if (! ((*info->callbacks->reloc_overflow)
4193 (info, (h ? &h->root : NULL), name, howto->name,
4194 (bfd_vma) 0, input_bfd, input_section,
4195 rel->r_offset)))
4196 return FALSE;
4197 }
4198 break;
4199 }
4200 }
4201 }
4202
4203 return TRUE;
4204 }
4205
4206 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4207 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4208 is the offset of the associated .got.plt entry from
4209 _GLOBAL_OFFSET_TABLE_. */
4210
4211 static void
4212 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4213 bfd_vma plt_offset, bfd_vma plt_index,
4214 bfd_vma got_offset)
4215 {
4216 bfd_vma got_base;
4217 const bfd_vma *plt_entry;
4218 struct _bfd_sparc_elf_link_hash_table *htab;
4219 bfd_byte *loc;
4220 Elf_Internal_Rela rela;
4221
4222 htab = _bfd_sparc_elf_hash_table (info);
4223 BFD_ASSERT (htab != NULL);
4224
4225 if (info->shared)
4226 {
4227 plt_entry = sparc_vxworks_shared_plt_entry;
4228 got_base = 0;
4229 }
4230 else
4231 {
4232 plt_entry = sparc_vxworks_exec_plt_entry;
4233 got_base = (htab->elf.hgot->root.u.def.value
4234 + htab->elf.hgot->root.u.def.section->output_offset
4235 + htab->elf.hgot->root.u.def.section->output_section->vma);
4236 }
4237
4238 /* Fill in the entry in the procedure linkage table. */
4239 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4240 htab->elf.splt->contents + plt_offset);
4241 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4242 htab->elf.splt->contents + plt_offset + 4);
4243 bfd_put_32 (output_bfd, plt_entry[2],
4244 htab->elf.splt->contents + plt_offset + 8);
4245 bfd_put_32 (output_bfd, plt_entry[3],
4246 htab->elf.splt->contents + plt_offset + 12);
4247 bfd_put_32 (output_bfd, plt_entry[4],
4248 htab->elf.splt->contents + plt_offset + 16);
4249 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4250 htab->elf.splt->contents + plt_offset + 20);
4251 /* PC-relative displacement for a branch to the start of
4252 the PLT section. */
4253 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4254 & 0x003fffff),
4255 htab->elf.splt->contents + plt_offset + 24);
4256 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4257 htab->elf.splt->contents + plt_offset + 28);
4258
4259 /* Fill in the .got.plt entry, pointing initially at the
4260 second half of the PLT entry. */
4261 BFD_ASSERT (htab->elf.sgotplt != NULL);
4262 bfd_put_32 (output_bfd,
4263 htab->elf.splt->output_section->vma
4264 + htab->elf.splt->output_offset
4265 + plt_offset + 20,
4266 htab->elf.sgotplt->contents + got_offset);
4267
4268 /* Add relocations to .rela.plt.unloaded. */
4269 if (!info->shared)
4270 {
4271 loc = (htab->srelplt2->contents
4272 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4273
4274 /* Relocate the initial sethi. */
4275 rela.r_offset = (htab->elf.splt->output_section->vma
4276 + htab->elf.splt->output_offset
4277 + plt_offset);
4278 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4279 rela.r_addend = got_offset;
4280 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4281 loc += sizeof (Elf32_External_Rela);
4282
4283 /* Likewise the following or. */
4284 rela.r_offset += 4;
4285 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4286 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4287 loc += sizeof (Elf32_External_Rela);
4288
4289 /* Relocate the .got.plt entry. */
4290 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4291 + htab->elf.sgotplt->output_offset
4292 + got_offset);
4293 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4294 rela.r_addend = plt_offset + 20;
4295 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4296 }
4297 }
4298
4299 /* Finish up dynamic symbol handling. We set the contents of various
4300 dynamic sections here. */
4301
4302 bfd_boolean
4303 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4304 struct bfd_link_info *info,
4305 struct elf_link_hash_entry *h,
4306 Elf_Internal_Sym *sym)
4307 {
4308 struct _bfd_sparc_elf_link_hash_table *htab;
4309 const struct elf_backend_data *bed;
4310
4311 htab = _bfd_sparc_elf_hash_table (info);
4312 BFD_ASSERT (htab != NULL);
4313 bed = get_elf_backend_data (output_bfd);
4314
4315 if (h->plt.offset != (bfd_vma) -1)
4316 {
4317 asection *splt;
4318 asection *srela;
4319 Elf_Internal_Rela rela;
4320 bfd_byte *loc;
4321 bfd_vma r_offset, got_offset;
4322 int rela_index;
4323
4324 /* When building a static executable, use .iplt and
4325 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4326 if (htab->elf.splt != NULL)
4327 {
4328 splt = htab->elf.splt;
4329 srela = htab->elf.srelplt;
4330 }
4331 else
4332 {
4333 splt = htab->elf.iplt;
4334 srela = htab->elf.irelplt;
4335 }
4336
4337 if (splt == NULL || srela == NULL)
4338 abort ();
4339
4340 /* Fill in the entry in the .rela.plt section. */
4341 if (htab->is_vxworks)
4342 {
4343 /* Work out the index of this PLT entry. */
4344 rela_index = ((h->plt.offset - htab->plt_header_size)
4345 / htab->plt_entry_size);
4346
4347 /* Calculate the offset of the associated .got.plt entry.
4348 The first three entries are reserved. */
4349 got_offset = (rela_index + 3) * 4;
4350
4351 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4352 rela_index, got_offset);
4353
4354
4355 /* On VxWorks, the relocation points to the .got.plt entry,
4356 not the .plt entry. */
4357 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4358 + htab->elf.sgotplt->output_offset
4359 + got_offset);
4360 rela.r_addend = 0;
4361 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4362 R_SPARC_JMP_SLOT);
4363 }
4364 else
4365 {
4366 bfd_boolean ifunc = FALSE;
4367
4368 /* Fill in the entry in the procedure linkage table. */
4369 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4370 h->plt.offset, splt->size,
4371 &r_offset);
4372
4373 if (h == NULL
4374 || h->dynindx == -1
4375 || ((info->executable
4376 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4377 && h->def_regular
4378 && h->type == STT_GNU_IFUNC))
4379 {
4380 ifunc = TRUE;
4381 BFD_ASSERT (h == NULL
4382 || (h->type == STT_GNU_IFUNC
4383 && h->def_regular
4384 && (h->root.type == bfd_link_hash_defined
4385 || h->root.type == bfd_link_hash_defweak)));
4386 }
4387
4388 rela.r_offset = r_offset
4389 + (splt->output_section->vma + splt->output_offset);
4390 if (ABI_64_P (output_bfd)
4391 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4392 {
4393 if (ifunc)
4394 {
4395 rela.r_addend = (h->root.u.def.section->output_section->vma
4396 + h->root.u.def.section->output_offset
4397 + h->root.u.def.value);
4398 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4399 R_SPARC_IRELATIVE);
4400 }
4401 else
4402 {
4403 rela.r_addend = (-(h->plt.offset + 4)
4404 - splt->output_section->vma
4405 - splt->output_offset);
4406 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4407 R_SPARC_JMP_SLOT);
4408 }
4409 }
4410 else
4411 {
4412 if (ifunc)
4413 {
4414 rela.r_addend = (h->root.u.def.section->output_section->vma
4415 + h->root.u.def.section->output_offset
4416 + h->root.u.def.value);
4417 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4418 R_SPARC_JMP_IREL);
4419 }
4420 else
4421 {
4422 rela.r_addend = 0;
4423 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4424 R_SPARC_JMP_SLOT);
4425 }
4426 }
4427 }
4428
4429 /* Adjust for the first 4 reserved elements in the .plt section
4430 when setting the offset in the .rela.plt section.
4431 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4432 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4433
4434 loc = srela->contents;
4435 loc += rela_index * bed->s->sizeof_rela;
4436 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4437
4438 if (!h->def_regular)
4439 {
4440 /* Mark the symbol as undefined, rather than as defined in
4441 the .plt section. Leave the value alone. */
4442 sym->st_shndx = SHN_UNDEF;
4443 /* If the symbol is weak, we do need to clear the value.
4444 Otherwise, the PLT entry would provide a definition for
4445 the symbol even if the symbol wasn't defined anywhere,
4446 and so the symbol would never be NULL. */
4447 if (!h->ref_regular_nonweak)
4448 sym->st_value = 0;
4449 }
4450 }
4451
4452 if (h->got.offset != (bfd_vma) -1
4453 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4454 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4455 {
4456 asection *sgot;
4457 asection *srela;
4458 Elf_Internal_Rela rela;
4459
4460 /* This symbol has an entry in the GOT. Set it up. */
4461
4462 sgot = htab->elf.sgot;
4463 srela = htab->elf.srelgot;
4464 BFD_ASSERT (sgot != NULL && srela != NULL);
4465
4466 rela.r_offset = (sgot->output_section->vma
4467 + sgot->output_offset
4468 + (h->got.offset &~ (bfd_vma) 1));
4469
4470 /* If this is a -Bsymbolic link, and the symbol is defined
4471 locally, we just want to emit a RELATIVE reloc. Likewise if
4472 the symbol was forced to be local because of a version file.
4473 The entry in the global offset table will already have been
4474 initialized in the relocate_section function. */
4475 if (! info->shared
4476 && h->type == STT_GNU_IFUNC
4477 && h->def_regular)
4478 {
4479 asection *plt;
4480
4481 /* We load the GOT entry with the PLT entry. */
4482 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4483 SPARC_ELF_PUT_WORD (htab, output_bfd,
4484 (plt->output_section->vma
4485 + plt->output_offset + h->plt.offset),
4486 htab->elf.sgot->contents
4487 + (h->got.offset & ~(bfd_vma) 1));
4488 return TRUE;
4489 }
4490 else if (info->shared
4491 && SYMBOL_REFERENCES_LOCAL (info, h))
4492 {
4493 asection *sec = h->root.u.def.section;
4494 if (h->type == STT_GNU_IFUNC)
4495 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4496 else
4497 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4498 rela.r_addend = (h->root.u.def.value
4499 + sec->output_section->vma
4500 + sec->output_offset);
4501 }
4502 else
4503 {
4504 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4505 rela.r_addend = 0;
4506 }
4507
4508 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4509 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4510 sparc_elf_append_rela (output_bfd, srela, &rela);
4511 }
4512
4513 if (h->needs_copy)
4514 {
4515 asection *s;
4516 Elf_Internal_Rela rela;
4517
4518 /* This symbols needs a copy reloc. Set it up. */
4519 BFD_ASSERT (h->dynindx != -1);
4520
4521 s = bfd_get_linker_section (h->root.u.def.section->owner,
4522 ".rela.bss");
4523 BFD_ASSERT (s != NULL);
4524
4525 rela.r_offset = (h->root.u.def.value
4526 + h->root.u.def.section->output_section->vma
4527 + h->root.u.def.section->output_offset);
4528 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4529 rela.r_addend = 0;
4530 sparc_elf_append_rela (output_bfd, s, &rela);
4531 }
4532
4533 /* Mark some specially defined symbols as absolute. On VxWorks,
4534 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4535 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4536 if (sym != NULL
4537 && (h == htab->elf.hdynamic
4538 || (!htab->is_vxworks
4539 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4540 sym->st_shndx = SHN_ABS;
4541
4542 return TRUE;
4543 }
4544
4545 /* Finish up the dynamic sections. */
4546
4547 static bfd_boolean
4548 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4549 bfd *dynobj, asection *sdyn,
4550 asection *splt ATTRIBUTE_UNUSED)
4551 {
4552 struct _bfd_sparc_elf_link_hash_table *htab;
4553 const struct elf_backend_data *bed;
4554 bfd_byte *dyncon, *dynconend;
4555 size_t dynsize;
4556 int stt_regidx = -1;
4557 bfd_boolean abi_64_p;
4558
4559 htab = _bfd_sparc_elf_hash_table (info);
4560 BFD_ASSERT (htab != NULL);
4561 bed = get_elf_backend_data (output_bfd);
4562 dynsize = bed->s->sizeof_dyn;
4563 dynconend = sdyn->contents + sdyn->size;
4564 abi_64_p = ABI_64_P (output_bfd);
4565 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4566 {
4567 Elf_Internal_Dyn dyn;
4568 const char *name;
4569 bfd_boolean size;
4570
4571 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4572
4573 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4574 {
4575 /* On VxWorks, DT_RELASZ should not include the relocations
4576 in .rela.plt. */
4577 if (htab->elf.srelplt)
4578 {
4579 dyn.d_un.d_val -= htab->elf.srelplt->size;
4580 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4581 }
4582 }
4583 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4584 {
4585 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4586 not to the start of the PLT. */
4587 if (htab->elf.sgotplt)
4588 {
4589 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4590 + htab->elf.sgotplt->output_offset);
4591 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4592 }
4593 }
4594 else if (htab->is_vxworks
4595 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4596 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4597 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4598 {
4599 if (stt_regidx == -1)
4600 {
4601 stt_regidx =
4602 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4603 if (stt_regidx == -1)
4604 return FALSE;
4605 }
4606 dyn.d_un.d_val = stt_regidx++;
4607 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4608 }
4609 else
4610 {
4611 switch (dyn.d_tag)
4612 {
4613 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4614 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4615 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4616 default: name = NULL; size = FALSE; break;
4617 }
4618
4619 if (name != NULL)
4620 {
4621 asection *s;
4622
4623 s = bfd_get_section_by_name (output_bfd, name);
4624 if (s == NULL)
4625 dyn.d_un.d_val = 0;
4626 else
4627 {
4628 if (! size)
4629 dyn.d_un.d_ptr = s->vma;
4630 else
4631 dyn.d_un.d_val = s->size;
4632 }
4633 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4634 }
4635 }
4636 }
4637 return TRUE;
4638 }
4639
4640 /* Install the first PLT entry in a VxWorks executable and make sure that
4641 .rela.plt.unloaded relocations have the correct symbol indexes. */
4642
4643 static void
4644 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4645 {
4646 struct _bfd_sparc_elf_link_hash_table *htab;
4647 Elf_Internal_Rela rela;
4648 bfd_vma got_base;
4649 bfd_byte *loc;
4650
4651 htab = _bfd_sparc_elf_hash_table (info);
4652 BFD_ASSERT (htab != NULL);
4653
4654 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4655 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4656 + htab->elf.hgot->root.u.def.section->output_offset
4657 + htab->elf.hgot->root.u.def.value);
4658
4659 /* Install the initial PLT entry. */
4660 bfd_put_32 (output_bfd,
4661 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4662 htab->elf.splt->contents);
4663 bfd_put_32 (output_bfd,
4664 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4665 htab->elf.splt->contents + 4);
4666 bfd_put_32 (output_bfd,
4667 sparc_vxworks_exec_plt0_entry[2],
4668 htab->elf.splt->contents + 8);
4669 bfd_put_32 (output_bfd,
4670 sparc_vxworks_exec_plt0_entry[3],
4671 htab->elf.splt->contents + 12);
4672 bfd_put_32 (output_bfd,
4673 sparc_vxworks_exec_plt0_entry[4],
4674 htab->elf.splt->contents + 16);
4675
4676 loc = htab->srelplt2->contents;
4677
4678 /* Add an unloaded relocation for the initial entry's "sethi". */
4679 rela.r_offset = (htab->elf.splt->output_section->vma
4680 + htab->elf.splt->output_offset);
4681 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4682 rela.r_addend = 8;
4683 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4684 loc += sizeof (Elf32_External_Rela);
4685
4686 /* Likewise the following "or". */
4687 rela.r_offset += 4;
4688 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4689 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4690 loc += sizeof (Elf32_External_Rela);
4691
4692 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4693 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4694 in which symbols were output. */
4695 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4696 {
4697 Elf_Internal_Rela rel;
4698
4699 /* The entry's initial "sethi" (against _G_O_T_). */
4700 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4701 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4702 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4703 loc += sizeof (Elf32_External_Rela);
4704
4705 /* The following "or" (also against _G_O_T_). */
4706 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4707 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4708 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4709 loc += sizeof (Elf32_External_Rela);
4710
4711 /* The .got.plt entry (against _P_L_T_). */
4712 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4713 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4714 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4715 loc += sizeof (Elf32_External_Rela);
4716 }
4717 }
4718
4719 /* Install the first PLT entry in a VxWorks shared object. */
4720
4721 static void
4722 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4723 {
4724 struct _bfd_sparc_elf_link_hash_table *htab;
4725 unsigned int i;
4726
4727 htab = _bfd_sparc_elf_hash_table (info);
4728 BFD_ASSERT (htab != NULL);
4729
4730 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4731 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4732 htab->elf.splt->contents + i * 4);
4733 }
4734
4735 /* Finish up local dynamic symbol handling. We set the contents of
4736 various dynamic sections here. */
4737
4738 static bfd_boolean
4739 finish_local_dynamic_symbol (void **slot, void *inf)
4740 {
4741 struct elf_link_hash_entry *h
4742 = (struct elf_link_hash_entry *) *slot;
4743 struct bfd_link_info *info
4744 = (struct bfd_link_info *) inf;
4745
4746 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4747 h, NULL);
4748 }
4749
4750 bfd_boolean
4751 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4752 {
4753 bfd *dynobj;
4754 asection *sdyn;
4755 struct _bfd_sparc_elf_link_hash_table *htab;
4756
4757 htab = _bfd_sparc_elf_hash_table (info);
4758 BFD_ASSERT (htab != NULL);
4759 dynobj = htab->elf.dynobj;
4760
4761 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4762
4763 if (elf_hash_table (info)->dynamic_sections_created)
4764 {
4765 asection *splt;
4766
4767 splt = htab->elf.splt;
4768 BFD_ASSERT (splt != NULL && sdyn != NULL);
4769
4770 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4771 return FALSE;
4772
4773 /* Initialize the contents of the .plt section. */
4774 if (splt->size > 0)
4775 {
4776 if (htab->is_vxworks)
4777 {
4778 if (info->shared)
4779 sparc_vxworks_finish_shared_plt (output_bfd, info);
4780 else
4781 sparc_vxworks_finish_exec_plt (output_bfd, info);
4782 }
4783 else
4784 {
4785 memset (splt->contents, 0, htab->plt_header_size);
4786 if (!ABI_64_P (output_bfd))
4787 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4788 splt->contents + splt->size - 4);
4789 }
4790 }
4791
4792 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4793 = (htab->is_vxworks || !ABI_64_P (output_bfd))
4794 ? 0 : htab->plt_entry_size;
4795 }
4796
4797 /* Set the first entry in the global offset table to the address of
4798 the dynamic section. */
4799 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4800 {
4801 bfd_vma val = (sdyn ?
4802 sdyn->output_section->vma + sdyn->output_offset :
4803 0);
4804
4805 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4806 }
4807
4808 if (htab->elf.sgot)
4809 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4810 SPARC_ELF_WORD_BYTES (htab);
4811
4812 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4813 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4814
4815 return TRUE;
4816 }
4817
4818 \f
4819 /* Set the right machine number for a SPARC ELF file. */
4820
4821 bfd_boolean
4822 _bfd_sparc_elf_object_p (bfd *abfd)
4823 {
4824 if (ABI_64_P (abfd))
4825 {
4826 unsigned long mach = bfd_mach_sparc_v9;
4827
4828 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4829 mach = bfd_mach_sparc_v9b;
4830 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4831 mach = bfd_mach_sparc_v9a;
4832 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4833 }
4834 else
4835 {
4836 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4837 {
4838 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4839 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4840 bfd_mach_sparc_v8plusb);
4841 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4842 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4843 bfd_mach_sparc_v8plusa);
4844 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4845 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4846 bfd_mach_sparc_v8plus);
4847 else
4848 return FALSE;
4849 }
4850 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4851 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4852 bfd_mach_sparc_sparclite_le);
4853 else
4854 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4855 }
4856 }
4857
4858 /* Return address for Ith PLT stub in section PLT, for relocation REL
4859 or (bfd_vma) -1 if it should not be included. */
4860
4861 bfd_vma
4862 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4863 {
4864 if (ABI_64_P (plt->owner))
4865 {
4866 bfd_vma j;
4867
4868 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4869 if (i < PLT64_LARGE_THRESHOLD)
4870 return plt->vma + i * PLT64_ENTRY_SIZE;
4871
4872 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4873 i -= j;
4874 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4875 }
4876 else
4877 return rel->address;
4878 }
4879
4880 /* Merge backend specific data from an object file to the output
4881 object file when linking. */
4882
4883 bfd_boolean
4884 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4885 {
4886 obj_attribute *in_attr, *in_attrs;
4887 obj_attribute *out_attr, *out_attrs;
4888
4889 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4890 {
4891 /* This is the first object. Copy the attributes. */
4892 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4893
4894 /* Use the Tag_null value to indicate the attributes have been
4895 initialized. */
4896 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4897
4898 return TRUE;
4899 }
4900
4901 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4902 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4903
4904 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4905 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4906
4907 out_attr->i |= in_attr->i;
4908
4909 /* Merge Tag_compatibility attributes and any common GNU ones. */
4910 _bfd_elf_merge_object_attributes (ibfd, obfd);
4911
4912 return TRUE;
4913 }
The GNU Binutils are a collection of binary tools.