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[thirdparty/binutils-gdb.git] / bfd / elfxx-sparc.c
1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2016 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* This file handles functionality common to the different SPARC ABI's. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34 #include "objalloc.h"
35 #include "hashtab.h"
36
37 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
38 #define MINUS_ONE (~ (bfd_vma) 0)
39
40 #define ABI_64_P(abfd) \
41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
42
43 /* The relocation "howto" table. */
44
45 /* Utility for performing the standard initial work of an instruction
46 relocation.
47 *PRELOCATION will contain the relocated item.
48 *PINSN will contain the instruction from the input stream.
49 If the result is `bfd_reloc_other' the caller can continue with
50 performing the relocation. Otherwise it must stop and return the
51 value to its caller. */
52
53 static bfd_reloc_status_type
54 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
55 void * data, asection *input_section, bfd *output_bfd,
56 bfd_vma *prelocation, bfd_vma *pinsn)
57 {
58 bfd_vma relocation;
59 reloc_howto_type *howto = reloc_entry->howto;
60
61 if (output_bfd != (bfd *) NULL
62 && (symbol->flags & BSF_SECTION_SYM) == 0
63 && (! howto->partial_inplace
64 || reloc_entry->addend == 0))
65 {
66 reloc_entry->address += input_section->output_offset;
67 return bfd_reloc_ok;
68 }
69
70 /* This works because partial_inplace is FALSE. */
71 if (output_bfd != NULL)
72 return bfd_reloc_continue;
73
74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
75 return bfd_reloc_outofrange;
76
77 relocation = (symbol->value
78 + symbol->section->output_section->vma
79 + symbol->section->output_offset);
80 relocation += reloc_entry->addend;
81 if (howto->pc_relative)
82 {
83 relocation -= (input_section->output_section->vma
84 + input_section->output_offset);
85 relocation -= reloc_entry->address;
86 }
87
88 *prelocation = relocation;
89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
90 return bfd_reloc_other;
91 }
92
93 /* For unsupported relocs. */
94
95 static bfd_reloc_status_type
96 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
97 arelent *reloc_entry ATTRIBUTE_UNUSED,
98 asymbol *symbol ATTRIBUTE_UNUSED,
99 void * data ATTRIBUTE_UNUSED,
100 asection *input_section ATTRIBUTE_UNUSED,
101 bfd *output_bfd ATTRIBUTE_UNUSED,
102 char **error_message ATTRIBUTE_UNUSED)
103 {
104 return bfd_reloc_notsupported;
105 }
106
107 /* Handle the WDISP16 reloc. */
108
109 static bfd_reloc_status_type
110 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
111 void * data, asection *input_section, bfd *output_bfd,
112 char **error_message ATTRIBUTE_UNUSED)
113 {
114 bfd_vma relocation;
115 bfd_vma insn;
116 bfd_reloc_status_type status;
117
118 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
119 input_section, output_bfd, &relocation, &insn);
120 if (status != bfd_reloc_other)
121 return status;
122
123 insn &= ~ (bfd_vma) 0x303fff;
124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
126
127 if ((bfd_signed_vma) relocation < - 0x40000
128 || (bfd_signed_vma) relocation > 0x3ffff)
129 return bfd_reloc_overflow;
130 else
131 return bfd_reloc_ok;
132 }
133
134 /* Handle the WDISP10 reloc. */
135
136 static bfd_reloc_status_type
137 sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 void * data, asection *input_section, bfd *output_bfd,
139 char **error_message ATTRIBUTE_UNUSED)
140 {
141 bfd_vma relocation;
142 bfd_vma insn;
143 bfd_reloc_status_type status;
144
145 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
146 input_section, output_bfd, &relocation, &insn);
147 if (status != bfd_reloc_other)
148 return status;
149
150 insn &= ~ (bfd_vma) 0x181fe0;
151 insn |= (((relocation >> 2) & 0x300) << 11)
152 | (((relocation >> 2) & 0xff) << 5);
153 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
154
155 if ((bfd_signed_vma) relocation < - 0x1000
156 || (bfd_signed_vma) relocation > 0xfff)
157 return bfd_reloc_overflow;
158 else
159 return bfd_reloc_ok;
160 }
161
162 /* Handle the HIX22 reloc. */
163
164 static bfd_reloc_status_type
165 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
166 void * data, asection *input_section, bfd *output_bfd,
167 char **error_message ATTRIBUTE_UNUSED)
168 {
169 bfd_vma relocation;
170 bfd_vma insn;
171 bfd_reloc_status_type status;
172
173 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
174 input_section, output_bfd, &relocation, &insn);
175 if (status != bfd_reloc_other)
176 return status;
177
178 relocation ^= MINUS_ONE;
179 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
180 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
181
182 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
183 return bfd_reloc_overflow;
184 else
185 return bfd_reloc_ok;
186 }
187
188 /* Handle the LOX10 reloc. */
189
190 static bfd_reloc_status_type
191 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
192 void * data, asection *input_section, bfd *output_bfd,
193 char **error_message ATTRIBUTE_UNUSED)
194 {
195 bfd_vma relocation;
196 bfd_vma insn;
197 bfd_reloc_status_type status;
198
199 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
200 input_section, output_bfd, &relocation, &insn);
201 if (status != bfd_reloc_other)
202 return status;
203
204 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
205 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
206
207 return bfd_reloc_ok;
208 }
209
210 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
211 {
212 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
213 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
214 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
215 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
216 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
217 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
218 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
219 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
220 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
221 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
223 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
224 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
225 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
226 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
227 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
228 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
229 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
230 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
231 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
232 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
233 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
234 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
235 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
236 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
237 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
238 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
239 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
240 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
241 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
242 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
243 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
244 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
245 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
246 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
247 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
248 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
249 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE),
250 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE),
251 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE),
252 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
253 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
254 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
255 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
256 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
257 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
258 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
259 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
260 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
261 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
262 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
263 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
264 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
265 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
266 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
267 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
268 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
269 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
270 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
271 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
272 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
273 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
274 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
275 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
276 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
277 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
278 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
279 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
280 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
281 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
282 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
283 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
284 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
285 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
286 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
287 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
288 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
289 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE),
290 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
291 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE),
292 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE),
293 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE),
294 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE),
295 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE),
296 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE),
297 HOWTO(R_SPARC_H34,12,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",FALSE,0,0x003fffff,FALSE),
298 HOWTO(R_SPARC_SIZE32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",FALSE,0,0xffffffff,TRUE),
299 HOWTO(R_SPARC_SIZE64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",FALSE,0,MINUS_ONE, TRUE),
300 HOWTO(R_SPARC_WDISP10,2,2,10,TRUE, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",FALSE,0,0x00000000,TRUE),
301 };
302 static reloc_howto_type sparc_jmp_irel_howto =
303 HOWTO(R_SPARC_JMP_IREL, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",FALSE,0,0x00000000,TRUE);
304 static reloc_howto_type sparc_irelative_howto =
305 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
306 static reloc_howto_type sparc_vtinherit_howto =
307 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
308 static reloc_howto_type sparc_vtentry_howto =
309 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
310 static reloc_howto_type sparc_rev32_howto =
311 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
312
313 reloc_howto_type *
314 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
315 bfd_reloc_code_real_type code)
316 {
317 /* We explicitly handle each relocation type in the switch
318 instead of using a lookup table for efficiency. */
319 switch (code)
320 {
321 case BFD_RELOC_NONE:
322 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
323
324 case BFD_RELOC_8:
325 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
326
327 case BFD_RELOC_16:
328 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
329
330 case BFD_RELOC_32:
331 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
332
333 case BFD_RELOC_8_PCREL:
334 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
335
336 case BFD_RELOC_16_PCREL:
337 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
338
339 case BFD_RELOC_32_PCREL:
340 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
341
342 case BFD_RELOC_32_PCREL_S2:
343 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
344
345 case BFD_RELOC_SPARC_WDISP22:
346 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
347
348 case BFD_RELOC_HI22:
349 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
350
351 case BFD_RELOC_SPARC22:
352 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
353
354 case BFD_RELOC_SPARC13:
355 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
356
357 case BFD_RELOC_LO10:
358 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
359
360 case BFD_RELOC_SPARC_GOT10:
361 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
362
363 case BFD_RELOC_SPARC_GOT13:
364 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
365
366 case BFD_RELOC_SPARC_GOT22:
367 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
368
369 case BFD_RELOC_SPARC_PC10:
370 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
371
372 case BFD_RELOC_SPARC_PC22:
373 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
374
375 case BFD_RELOC_SPARC_WPLT30:
376 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
377
378 case BFD_RELOC_SPARC_COPY:
379 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
380
381 case BFD_RELOC_SPARC_GLOB_DAT:
382 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
383
384 case BFD_RELOC_SPARC_JMP_SLOT:
385 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
386
387 case BFD_RELOC_SPARC_RELATIVE:
388 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
389
390 case BFD_RELOC_SPARC_UA32:
391 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
392
393 case BFD_RELOC_SPARC_PLT32:
394 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
395
396 case BFD_RELOC_SPARC_10:
397 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
398
399 case BFD_RELOC_SPARC_11:
400 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
401
402 case BFD_RELOC_SPARC_64:
403 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
404
405 case BFD_RELOC_SPARC_OLO10:
406 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
407
408 case BFD_RELOC_SPARC_HH22:
409 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
410
411 case BFD_RELOC_SPARC_HM10:
412 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
413
414 case BFD_RELOC_SPARC_LM22:
415 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
416
417 case BFD_RELOC_SPARC_PC_HH22:
418 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
419
420 case BFD_RELOC_SPARC_PC_HM10:
421 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
422
423 case BFD_RELOC_SPARC_PC_LM22:
424 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
425
426 case BFD_RELOC_SPARC_WDISP16:
427 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
428
429 case BFD_RELOC_SPARC_WDISP19:
430 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
431
432 case BFD_RELOC_SPARC_7:
433 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
434
435 case BFD_RELOC_SPARC_5:
436 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
437
438 case BFD_RELOC_SPARC_6:
439 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
440
441 case BFD_RELOC_SPARC_DISP64:
442 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
443
444 case BFD_RELOC_SPARC_PLT64:
445 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
446
447 case BFD_RELOC_SPARC_HIX22:
448 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
449
450 case BFD_RELOC_SPARC_LOX10:
451 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
452
453 case BFD_RELOC_SPARC_H44:
454 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
455
456 case BFD_RELOC_SPARC_M44:
457 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
458
459 case BFD_RELOC_SPARC_L44:
460 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
461
462 case BFD_RELOC_SPARC_REGISTER:
463 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
464
465 case BFD_RELOC_SPARC_UA64:
466 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
467
468 case BFD_RELOC_SPARC_UA16:
469 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
470
471 case BFD_RELOC_SPARC_TLS_GD_HI22:
472 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
473
474 case BFD_RELOC_SPARC_TLS_GD_LO10:
475 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
476
477 case BFD_RELOC_SPARC_TLS_GD_ADD:
478 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
479
480 case BFD_RELOC_SPARC_TLS_GD_CALL:
481 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
482
483 case BFD_RELOC_SPARC_TLS_LDM_HI22:
484 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
485
486 case BFD_RELOC_SPARC_TLS_LDM_LO10:
487 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
488
489 case BFD_RELOC_SPARC_TLS_LDM_ADD:
490 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
491
492 case BFD_RELOC_SPARC_TLS_LDM_CALL:
493 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
494
495 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
496 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
497
498 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
499 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
500
501 case BFD_RELOC_SPARC_TLS_LDO_ADD:
502 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
503
504 case BFD_RELOC_SPARC_TLS_IE_HI22:
505 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
506
507 case BFD_RELOC_SPARC_TLS_IE_LO10:
508 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
509
510 case BFD_RELOC_SPARC_TLS_IE_LD:
511 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
512
513 case BFD_RELOC_SPARC_TLS_IE_LDX:
514 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
515
516 case BFD_RELOC_SPARC_TLS_IE_ADD:
517 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
518
519 case BFD_RELOC_SPARC_TLS_LE_HIX22:
520 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
521
522 case BFD_RELOC_SPARC_TLS_LE_LOX10:
523 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
524
525 case BFD_RELOC_SPARC_TLS_DTPMOD32:
526 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
527
528 case BFD_RELOC_SPARC_TLS_DTPMOD64:
529 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
530
531 case BFD_RELOC_SPARC_TLS_DTPOFF32:
532 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
533
534 case BFD_RELOC_SPARC_TLS_DTPOFF64:
535 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
536
537 case BFD_RELOC_SPARC_TLS_TPOFF32:
538 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
539
540 case BFD_RELOC_SPARC_TLS_TPOFF64:
541 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
542
543 case BFD_RELOC_SPARC_GOTDATA_HIX22:
544 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
545
546 case BFD_RELOC_SPARC_GOTDATA_LOX10:
547 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
548
549 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
550 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
551
552 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
553 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
554
555 case BFD_RELOC_SPARC_GOTDATA_OP:
556 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
557
558 case BFD_RELOC_SPARC_H34:
559 return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
560
561 case BFD_RELOC_SPARC_SIZE32:
562 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
563
564 case BFD_RELOC_SPARC_SIZE64:
565 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
566
567 case BFD_RELOC_SPARC_WDISP10:
568 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
569
570 case BFD_RELOC_SPARC_JMP_IREL:
571 return &sparc_jmp_irel_howto;
572
573 case BFD_RELOC_SPARC_IRELATIVE:
574 return &sparc_irelative_howto;
575
576 case BFD_RELOC_VTABLE_INHERIT:
577 return &sparc_vtinherit_howto;
578
579 case BFD_RELOC_VTABLE_ENTRY:
580 return &sparc_vtentry_howto;
581
582 case BFD_RELOC_SPARC_REV32:
583 return &sparc_rev32_howto;
584
585 default:
586 break;
587 }
588 bfd_set_error (bfd_error_bad_value);
589 return NULL;
590 }
591
592 reloc_howto_type *
593 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
594 const char *r_name)
595 {
596 unsigned int i;
597
598 for (i = 0;
599 i < (sizeof (_bfd_sparc_elf_howto_table)
600 / sizeof (_bfd_sparc_elf_howto_table[0]));
601 i++)
602 if (_bfd_sparc_elf_howto_table[i].name != NULL
603 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
604 return &_bfd_sparc_elf_howto_table[i];
605
606 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
607 return &sparc_vtinherit_howto;
608 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
609 return &sparc_vtentry_howto;
610 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
611 return &sparc_rev32_howto;
612
613 return NULL;
614 }
615
616 reloc_howto_type *
617 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
618 {
619 switch (r_type)
620 {
621 case R_SPARC_JMP_IREL:
622 return &sparc_jmp_irel_howto;
623
624 case R_SPARC_IRELATIVE:
625 return &sparc_irelative_howto;
626
627 case R_SPARC_GNU_VTINHERIT:
628 return &sparc_vtinherit_howto;
629
630 case R_SPARC_GNU_VTENTRY:
631 return &sparc_vtentry_howto;
632
633 case R_SPARC_REV32:
634 return &sparc_rev32_howto;
635
636 default:
637 if (r_type >= (unsigned int) R_SPARC_max_std)
638 {
639 _bfd_error_handler (_("invalid relocation type %d"), (int) r_type);
640 r_type = R_SPARC_NONE;
641 }
642 return &_bfd_sparc_elf_howto_table[r_type];
643 }
644 }
645
646 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
647 so just take advantage of that. */
648 #define SPARC_ELF_R_TYPE(r_info) \
649 ((r_info) & 0xff)
650
651 void
652 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
653 Elf_Internal_Rela *dst)
654 {
655 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
656
657 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
658 }
659 \f
660
661 /* The nop opcode we use. */
662 #define SPARC_NOP 0x01000000
663
664 #define SPARC_INSN_BYTES 4
665
666 /* The SPARC linker needs to keep track of the number of relocs that it
667 decides to copy as dynamic relocs in check_relocs for each symbol.
668 This is so that it can later discard them if they are found to be
669 unnecessary. We store the information in a field extending the
670 regular ELF linker hash table. */
671
672 struct _bfd_sparc_elf_dyn_relocs
673 {
674 struct _bfd_sparc_elf_dyn_relocs *next;
675
676 /* The input section of the reloc. */
677 asection *sec;
678
679 /* Total number of relocs copied for the input section. */
680 bfd_size_type count;
681
682 /* Number of pc-relative relocs copied for the input section. */
683 bfd_size_type pc_count;
684 };
685
686 /* SPARC ELF linker hash entry. */
687
688 struct _bfd_sparc_elf_link_hash_entry
689 {
690 struct elf_link_hash_entry elf;
691
692 /* Track dynamic relocs copied for this symbol. */
693 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
694
695 #define GOT_UNKNOWN 0
696 #define GOT_NORMAL 1
697 #define GOT_TLS_GD 2
698 #define GOT_TLS_IE 3
699 unsigned char tls_type;
700 };
701
702 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
703
704 struct _bfd_sparc_elf_obj_tdata
705 {
706 struct elf_obj_tdata root;
707
708 /* tls_type for each local got entry. */
709 char *local_got_tls_type;
710
711 /* TRUE if TLS GD relocs has been seen for this object. */
712 bfd_boolean has_tlsgd;
713 };
714
715 #define _bfd_sparc_elf_tdata(abfd) \
716 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
717
718 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
719 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
720
721 #define is_sparc_elf(bfd) \
722 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
723 && elf_tdata (bfd) != NULL \
724 && elf_object_id (bfd) == SPARC_ELF_DATA)
725
726 bfd_boolean
727 _bfd_sparc_elf_mkobject (bfd *abfd)
728 {
729 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
730 SPARC_ELF_DATA);
731 }
732
733 static void
734 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
735 {
736 bfd_put_32 (abfd, val, ptr);
737 }
738
739 static void
740 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
741 {
742 bfd_put_64 (abfd, val, ptr);
743 }
744
745 static void
746 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
747 {
748 const struct elf_backend_data *bed;
749 bfd_byte *loc;
750
751 bed = get_elf_backend_data (abfd);
752 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
753 bed->s->swap_reloca_out (abfd, rel, loc);
754 }
755
756 static bfd_vma
757 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
758 bfd_vma rel_index ATTRIBUTE_UNUSED,
759 bfd_vma type ATTRIBUTE_UNUSED)
760 {
761 return ELF64_R_INFO (rel_index,
762 (in_rel ?
763 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
764 type) : type));
765 }
766
767 static bfd_vma
768 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
769 bfd_vma rel_index, bfd_vma type)
770 {
771 return ELF32_R_INFO (rel_index, type);
772 }
773
774 static bfd_vma
775 sparc_elf_r_symndx_64 (bfd_vma r_info)
776 {
777 bfd_vma r_symndx = ELF32_R_SYM (r_info);
778 return (r_symndx >> 24);
779 }
780
781 static bfd_vma
782 sparc_elf_r_symndx_32 (bfd_vma r_info)
783 {
784 return ELF32_R_SYM (r_info);
785 }
786
787 /* PLT/GOT stuff */
788
789 #define PLT32_ENTRY_SIZE 12
790 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
791
792 /* The first four entries in a 32-bit procedure linkage table are reserved,
793 and the initial contents are unimportant (we zero them out).
794 Subsequent entries look like this. See the SVR4 ABI SPARC
795 supplement to see how this works. */
796
797 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
798 #define PLT32_ENTRY_WORD0 0x03000000
799 /* b,a .plt0. We fill in the offset later. */
800 #define PLT32_ENTRY_WORD1 0x30800000
801 /* nop. */
802 #define PLT32_ENTRY_WORD2 SPARC_NOP
803
804 static int
805 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
806 bfd_vma max ATTRIBUTE_UNUSED,
807 bfd_vma *r_offset)
808 {
809 bfd_put_32 (output_bfd,
810 PLT32_ENTRY_WORD0 + offset,
811 splt->contents + offset);
812 bfd_put_32 (output_bfd,
813 (PLT32_ENTRY_WORD1
814 + (((- (offset + 4)) >> 2) & 0x3fffff)),
815 splt->contents + offset + 4);
816 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
817 splt->contents + offset + 8);
818
819 *r_offset = offset;
820
821 return offset / PLT32_ENTRY_SIZE - 4;
822 }
823
824 /* Both the headers and the entries are icache aligned. */
825 #define PLT64_ENTRY_SIZE 32
826 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
827 #define PLT64_LARGE_THRESHOLD 32768
828
829 static int
830 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
831 bfd_vma max, bfd_vma *r_offset)
832 {
833 unsigned char *entry = splt->contents + offset;
834 const unsigned int nop = SPARC_NOP;
835 int plt_index;
836
837 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
838 {
839 unsigned int sethi, ba;
840
841 *r_offset = offset;
842
843 plt_index = (offset / PLT64_ENTRY_SIZE);
844
845 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
846 ba = 0x30680000
847 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
848
849 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
850 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
851 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
852 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
853 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
854 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
855 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
856 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
857 }
858 else
859 {
860 unsigned char *ptr;
861 unsigned int ldx;
862 int block, last_block, ofs, last_ofs, chunks_this_block;
863 const int insn_chunk_size = (6 * 4);
864 const int ptr_chunk_size = (1 * 8);
865 const int entries_per_block = 160;
866 const int block_size = entries_per_block * (insn_chunk_size
867 + ptr_chunk_size);
868
869 /* Entries 32768 and higher are grouped into blocks of 160.
870 The blocks are further subdivided into 160 sequences of
871 6 instructions and 160 pointers. If a block does not require
872 the full 160 entries, let's say it requires N, then there
873 will be N sequences of 6 instructions and N pointers. */
874
875 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
876 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
877
878 block = offset / block_size;
879 last_block = max / block_size;
880 if (block != last_block)
881 {
882 chunks_this_block = 160;
883 }
884 else
885 {
886 last_ofs = max % block_size;
887 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
888 }
889
890 ofs = offset % block_size;
891
892 plt_index = (PLT64_LARGE_THRESHOLD +
893 (block * 160) +
894 (ofs / insn_chunk_size));
895
896 ptr = splt->contents
897 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
898 + (block * block_size)
899 + (chunks_this_block * insn_chunk_size)
900 + (ofs / insn_chunk_size) * ptr_chunk_size;
901
902 *r_offset = (bfd_vma) (ptr - splt->contents);
903
904 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
905
906 /* mov %o7,%g5
907 call .+8
908 nop
909 ldx [%o7+P],%g1
910 jmpl %o7+%g1,%g1
911 mov %g5,%o7 */
912 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
913 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
914 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
915 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
916 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
917 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
918
919 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
920 }
921
922 return plt_index - 4;
923 }
924
925 /* The format of the first PLT entry in a VxWorks executable. */
926 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
927 {
928 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
929 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
930 0xc4008000, /* ld [ %g2 ], %g2 */
931 0x81c08000, /* jmp %g2 */
932 0x01000000 /* nop */
933 };
934
935 /* The format of subsequent PLT entries. */
936 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
937 {
938 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
939 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
940 0xc2004000, /* ld [ %g1 ], %g1 */
941 0x81c04000, /* jmp %g1 */
942 0x01000000, /* nop */
943 0x03000000, /* sethi %hi(f@pltindex), %g1 */
944 0x10800000, /* b _PLT_resolve */
945 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
946 };
947
948 /* The format of the first PLT entry in a VxWorks shared object. */
949 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
950 {
951 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
952 0x81c08000, /* jmp %g2 */
953 0x01000000 /* nop */
954 };
955
956 /* The format of subsequent PLT entries. */
957 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
958 {
959 0x03000000, /* sethi %hi(f@got), %g1 */
960 0x82106000, /* or %g1, %lo(f@got), %g1 */
961 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
962 0x81c04000, /* jmp %g1 */
963 0x01000000, /* nop */
964 0x03000000, /* sethi %hi(f@pltindex), %g1 */
965 0x10800000, /* b _PLT_resolve */
966 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
967 };
968
969 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
970 htab->put_word(bfd, val, ptr)
971
972 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
973 htab->r_info(in_rel, index, type)
974
975 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
976 htab->r_symndx(r_info)
977
978 #define SPARC_ELF_WORD_BYTES(htab) \
979 htab->bytes_per_word
980
981 #define SPARC_ELF_RELA_BYTES(htab) \
982 htab->bytes_per_rela
983
984 #define SPARC_ELF_DTPOFF_RELOC(htab) \
985 htab->dtpoff_reloc
986
987 #define SPARC_ELF_DTPMOD_RELOC(htab) \
988 htab->dtpmod_reloc
989
990 #define SPARC_ELF_TPOFF_RELOC(htab) \
991 htab->tpoff_reloc
992
993 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
994 htab->build_plt_entry (obfd, splt, off, max, r_off)
995
996 /* Create an entry in an SPARC ELF linker hash table. */
997
998 static struct bfd_hash_entry *
999 link_hash_newfunc (struct bfd_hash_entry *entry,
1000 struct bfd_hash_table *table, const char *string)
1001 {
1002 /* Allocate the structure if it has not already been allocated by a
1003 subclass. */
1004 if (entry == NULL)
1005 {
1006 entry = bfd_hash_allocate (table,
1007 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1008 if (entry == NULL)
1009 return entry;
1010 }
1011
1012 /* Call the allocation method of the superclass. */
1013 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1014 if (entry != NULL)
1015 {
1016 struct _bfd_sparc_elf_link_hash_entry *eh;
1017
1018 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1019 eh->dyn_relocs = NULL;
1020 eh->tls_type = GOT_UNKNOWN;
1021 }
1022
1023 return entry;
1024 }
1025
1026 /* The name of the dynamic interpreter. This is put in the .interp
1027 section. */
1028
1029 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1030 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1031
1032 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1033 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1034 as global symbol. We reuse indx and dynstr_index for local symbol
1035 hash since they aren't used by global symbols in this backend. */
1036
1037 static hashval_t
1038 elf_sparc_local_htab_hash (const void *ptr)
1039 {
1040 struct elf_link_hash_entry *h
1041 = (struct elf_link_hash_entry *) ptr;
1042 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1043 }
1044
1045 /* Compare local hash entries. */
1046
1047 static int
1048 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1049 {
1050 struct elf_link_hash_entry *h1
1051 = (struct elf_link_hash_entry *) ptr1;
1052 struct elf_link_hash_entry *h2
1053 = (struct elf_link_hash_entry *) ptr2;
1054
1055 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1056 }
1057
1058 /* Find and/or create a hash entry for local symbol. */
1059
1060 static struct elf_link_hash_entry *
1061 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1062 bfd *abfd, const Elf_Internal_Rela *rel,
1063 bfd_boolean create)
1064 {
1065 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1066 asection *sec = abfd->sections;
1067 unsigned long r_symndx;
1068 hashval_t h;
1069 void **slot;
1070
1071 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1072 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1073
1074 e.elf.indx = sec->id;
1075 e.elf.dynstr_index = r_symndx;
1076 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1077 create ? INSERT : NO_INSERT);
1078
1079 if (!slot)
1080 return NULL;
1081
1082 if (*slot)
1083 {
1084 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1085 return &ret->elf;
1086 }
1087
1088 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1089 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1090 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1091 if (ret)
1092 {
1093 memset (ret, 0, sizeof (*ret));
1094 ret->elf.indx = sec->id;
1095 ret->elf.dynstr_index = r_symndx;
1096 ret->elf.dynindx = -1;
1097 ret->elf.plt.offset = (bfd_vma) -1;
1098 ret->elf.got.offset = (bfd_vma) -1;
1099 *slot = ret;
1100 }
1101 return &ret->elf;
1102 }
1103
1104 /* Destroy a SPARC ELF linker hash table. */
1105
1106 static void
1107 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1108 {
1109 struct _bfd_sparc_elf_link_hash_table *htab
1110 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1111
1112 if (htab->loc_hash_table)
1113 htab_delete (htab->loc_hash_table);
1114 if (htab->loc_hash_memory)
1115 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1116 _bfd_elf_link_hash_table_free (obfd);
1117 }
1118
1119 /* Create a SPARC ELF linker hash table. */
1120
1121 struct bfd_link_hash_table *
1122 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1123 {
1124 struct _bfd_sparc_elf_link_hash_table *ret;
1125 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1126
1127 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1128 if (ret == NULL)
1129 return NULL;
1130
1131 if (ABI_64_P (abfd))
1132 {
1133 ret->put_word = sparc_put_word_64;
1134 ret->r_info = sparc_elf_r_info_64;
1135 ret->r_symndx = sparc_elf_r_symndx_64;
1136 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1137 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1138 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1139 ret->word_align_power = 3;
1140 ret->align_power_max = 4;
1141 ret->bytes_per_word = 8;
1142 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1143 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1144 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1145
1146 ret->build_plt_entry = sparc64_plt_entry_build;
1147 ret->plt_header_size = PLT64_HEADER_SIZE;
1148 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1149 }
1150 else
1151 {
1152 ret->put_word = sparc_put_word_32;
1153 ret->r_info = sparc_elf_r_info_32;
1154 ret->r_symndx = sparc_elf_r_symndx_32;
1155 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1156 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1157 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1158 ret->word_align_power = 2;
1159 ret->align_power_max = 3;
1160 ret->bytes_per_word = 4;
1161 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1162 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1163 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1164
1165 ret->build_plt_entry = sparc32_plt_entry_build;
1166 ret->plt_header_size = PLT32_HEADER_SIZE;
1167 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1168 }
1169
1170 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1171 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1172 SPARC_ELF_DATA))
1173 {
1174 free (ret);
1175 return NULL;
1176 }
1177
1178 ret->loc_hash_table = htab_try_create (1024,
1179 elf_sparc_local_htab_hash,
1180 elf_sparc_local_htab_eq,
1181 NULL);
1182 ret->loc_hash_memory = objalloc_create ();
1183 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1184 {
1185 _bfd_sparc_elf_link_hash_table_free (abfd);
1186 return NULL;
1187 }
1188 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1189
1190 return &ret->elf.root;
1191 }
1192
1193 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1194 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1195 hash table. */
1196
1197 bfd_boolean
1198 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1199 struct bfd_link_info *info)
1200 {
1201 struct _bfd_sparc_elf_link_hash_table *htab;
1202
1203 htab = _bfd_sparc_elf_hash_table (info);
1204 BFD_ASSERT (htab != NULL);
1205
1206 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1207 return FALSE;
1208
1209 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1210 if (!bfd_link_pic (info))
1211 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1212
1213 if (htab->is_vxworks)
1214 {
1215 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1216 return FALSE;
1217 if (bfd_link_pic (info))
1218 {
1219 htab->plt_header_size
1220 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1221 htab->plt_entry_size
1222 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1223 }
1224 else
1225 {
1226 htab->plt_header_size
1227 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1228 htab->plt_entry_size
1229 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1230 }
1231 }
1232
1233 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1234 || (!bfd_link_pic (info) && !htab->srelbss))
1235 abort ();
1236
1237 return TRUE;
1238 }
1239
1240 static bfd_boolean
1241 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1242 {
1243 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1244 struct elf_link_hash_table *htab = elf_hash_table (info);
1245 flagword flags, pltflags;
1246 asection *s;
1247
1248 if (htab->irelifunc != NULL || htab->iplt != NULL)
1249 return TRUE;
1250
1251 flags = bed->dynamic_sec_flags;
1252 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1253
1254 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1255 if (s == NULL
1256 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1257 return FALSE;
1258 htab->iplt = s;
1259
1260 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1261 flags | SEC_READONLY);
1262 if (s == NULL
1263 || ! bfd_set_section_alignment (abfd, s,
1264 bed->s->log_file_align))
1265 return FALSE;
1266 htab->irelplt = s;
1267
1268 return TRUE;
1269 }
1270
1271 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1272
1273 void
1274 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1275 struct elf_link_hash_entry *dir,
1276 struct elf_link_hash_entry *ind)
1277 {
1278 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1279
1280 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1281 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1282
1283 if (eind->dyn_relocs != NULL)
1284 {
1285 if (edir->dyn_relocs != NULL)
1286 {
1287 struct _bfd_sparc_elf_dyn_relocs **pp;
1288 struct _bfd_sparc_elf_dyn_relocs *p;
1289
1290 /* Add reloc counts against the indirect sym to the direct sym
1291 list. Merge any entries against the same section. */
1292 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1293 {
1294 struct _bfd_sparc_elf_dyn_relocs *q;
1295
1296 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1297 if (q->sec == p->sec)
1298 {
1299 q->pc_count += p->pc_count;
1300 q->count += p->count;
1301 *pp = p->next;
1302 break;
1303 }
1304 if (q == NULL)
1305 pp = &p->next;
1306 }
1307 *pp = edir->dyn_relocs;
1308 }
1309
1310 edir->dyn_relocs = eind->dyn_relocs;
1311 eind->dyn_relocs = NULL;
1312 }
1313
1314 if (ind->root.type == bfd_link_hash_indirect
1315 && dir->got.refcount <= 0)
1316 {
1317 edir->tls_type = eind->tls_type;
1318 eind->tls_type = GOT_UNKNOWN;
1319 }
1320 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1321 }
1322
1323 static int
1324 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1325 int r_type, int is_local)
1326 {
1327 if (! ABI_64_P (abfd)
1328 && r_type == R_SPARC_TLS_GD_HI22
1329 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1330 r_type = R_SPARC_REV32;
1331
1332 if (bfd_link_pic (info))
1333 return r_type;
1334
1335 switch (r_type)
1336 {
1337 case R_SPARC_TLS_GD_HI22:
1338 if (is_local)
1339 return R_SPARC_TLS_LE_HIX22;
1340 return R_SPARC_TLS_IE_HI22;
1341 case R_SPARC_TLS_GD_LO10:
1342 if (is_local)
1343 return R_SPARC_TLS_LE_LOX10;
1344 return R_SPARC_TLS_IE_LO10;
1345 case R_SPARC_TLS_IE_HI22:
1346 if (is_local)
1347 return R_SPARC_TLS_LE_HIX22;
1348 return r_type;
1349 case R_SPARC_TLS_IE_LO10:
1350 if (is_local)
1351 return R_SPARC_TLS_LE_LOX10;
1352 return r_type;
1353 case R_SPARC_TLS_LDM_HI22:
1354 return R_SPARC_TLS_LE_HIX22;
1355 case R_SPARC_TLS_LDM_LO10:
1356 return R_SPARC_TLS_LE_LOX10;
1357 }
1358
1359 return r_type;
1360 }
1361 \f
1362 /* Look through the relocs for a section during the first phase, and
1363 allocate space in the global offset table or procedure linkage
1364 table. */
1365
1366 bfd_boolean
1367 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1368 asection *sec, const Elf_Internal_Rela *relocs)
1369 {
1370 struct _bfd_sparc_elf_link_hash_table *htab;
1371 Elf_Internal_Shdr *symtab_hdr;
1372 struct elf_link_hash_entry **sym_hashes;
1373 const Elf_Internal_Rela *rel;
1374 const Elf_Internal_Rela *rel_end;
1375 asection *sreloc;
1376 int num_relocs;
1377 bfd_boolean checked_tlsgd = FALSE;
1378
1379 if (bfd_link_relocatable (info))
1380 return TRUE;
1381
1382 htab = _bfd_sparc_elf_hash_table (info);
1383 BFD_ASSERT (htab != NULL);
1384 symtab_hdr = &elf_symtab_hdr (abfd);
1385 sym_hashes = elf_sym_hashes (abfd);
1386
1387 sreloc = NULL;
1388
1389 if (ABI_64_P (abfd))
1390 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1391 else
1392 num_relocs = sec->reloc_count;
1393
1394 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1395
1396 if (htab->elf.dynobj == NULL)
1397 htab->elf.dynobj = abfd;
1398 if (!create_ifunc_sections (htab->elf.dynobj, info))
1399 return FALSE;
1400
1401 rel_end = relocs + num_relocs;
1402 for (rel = relocs; rel < rel_end; rel++)
1403 {
1404 unsigned int r_type;
1405 unsigned long r_symndx;
1406 struct elf_link_hash_entry *h;
1407 Elf_Internal_Sym *isym;
1408
1409 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1410 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1411
1412 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1413 {
1414 _bfd_error_handler (_("%B: bad symbol index: %d"), abfd, r_symndx);
1415 return FALSE;
1416 }
1417
1418 isym = NULL;
1419 if (r_symndx < symtab_hdr->sh_info)
1420 {
1421 /* A local symbol. */
1422 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1423 abfd, r_symndx);
1424 if (isym == NULL)
1425 return FALSE;
1426
1427 /* Check relocation against local STT_GNU_IFUNC symbol. */
1428 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1429 {
1430 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1431 TRUE);
1432 if (h == NULL)
1433 return FALSE;
1434
1435 /* Fake a STT_GNU_IFUNC symbol. */
1436 h->type = STT_GNU_IFUNC;
1437 h->def_regular = 1;
1438 h->ref_regular = 1;
1439 h->forced_local = 1;
1440 h->root.type = bfd_link_hash_defined;
1441 }
1442 else
1443 h = NULL;
1444 }
1445 else
1446 {
1447 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1448 while (h->root.type == bfd_link_hash_indirect
1449 || h->root.type == bfd_link_hash_warning)
1450 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1451
1452 /* PR15323, ref flags aren't set for references in the same
1453 object. */
1454 h->root.non_ir_ref = 1;
1455 }
1456
1457 if (h && h->type == STT_GNU_IFUNC)
1458 {
1459 if (h->def_regular)
1460 {
1461 h->ref_regular = 1;
1462 h->plt.refcount += 1;
1463 }
1464 }
1465
1466 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1467 with R_SPARC_TLS_GD_HI22. */
1468 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1469 switch (r_type)
1470 {
1471 case R_SPARC_TLS_GD_HI22:
1472 {
1473 const Elf_Internal_Rela *relt;
1474
1475 for (relt = rel + 1; relt < rel_end; relt++)
1476 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1477 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1478 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1479 break;
1480 checked_tlsgd = TRUE;
1481 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1482 }
1483 break;
1484 case R_SPARC_TLS_GD_LO10:
1485 case R_SPARC_TLS_GD_ADD:
1486 case R_SPARC_TLS_GD_CALL:
1487 checked_tlsgd = TRUE;
1488 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1489 break;
1490 }
1491
1492 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1493 switch (r_type)
1494 {
1495 case R_SPARC_TLS_LDM_HI22:
1496 case R_SPARC_TLS_LDM_LO10:
1497 htab->tls_ldm_got.refcount += 1;
1498 break;
1499
1500 case R_SPARC_TLS_LE_HIX22:
1501 case R_SPARC_TLS_LE_LOX10:
1502 if (bfd_link_pic (info))
1503 goto r_sparc_plt32;
1504 break;
1505
1506 case R_SPARC_TLS_IE_HI22:
1507 case R_SPARC_TLS_IE_LO10:
1508 if (bfd_link_pic (info))
1509 info->flags |= DF_STATIC_TLS;
1510 /* Fall through */
1511
1512 case R_SPARC_GOT10:
1513 case R_SPARC_GOT13:
1514 case R_SPARC_GOT22:
1515 case R_SPARC_GOTDATA_HIX22:
1516 case R_SPARC_GOTDATA_LOX10:
1517 case R_SPARC_GOTDATA_OP_HIX22:
1518 case R_SPARC_GOTDATA_OP_LOX10:
1519 case R_SPARC_TLS_GD_HI22:
1520 case R_SPARC_TLS_GD_LO10:
1521 /* This symbol requires a global offset table entry. */
1522 {
1523 int tls_type, old_tls_type;
1524
1525 switch (r_type)
1526 {
1527 default:
1528 case R_SPARC_GOT10:
1529 case R_SPARC_GOT13:
1530 case R_SPARC_GOT22:
1531 case R_SPARC_GOTDATA_OP_HIX22:
1532 case R_SPARC_GOTDATA_OP_LOX10:
1533 tls_type = GOT_NORMAL;
1534 break;
1535 case R_SPARC_TLS_GD_HI22:
1536 case R_SPARC_TLS_GD_LO10:
1537 tls_type = GOT_TLS_GD;
1538 break;
1539 case R_SPARC_TLS_IE_HI22:
1540 case R_SPARC_TLS_IE_LO10:
1541 tls_type = GOT_TLS_IE;
1542 break;
1543 }
1544
1545 if (h != NULL)
1546 {
1547 h->got.refcount += 1;
1548 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1549 }
1550 else
1551 {
1552 bfd_signed_vma *local_got_refcounts;
1553
1554 /* This is a global offset table entry for a local symbol. */
1555 local_got_refcounts = elf_local_got_refcounts (abfd);
1556 if (local_got_refcounts == NULL)
1557 {
1558 bfd_size_type size;
1559
1560 size = symtab_hdr->sh_info;
1561 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1562 local_got_refcounts = ((bfd_signed_vma *)
1563 bfd_zalloc (abfd, size));
1564 if (local_got_refcounts == NULL)
1565 return FALSE;
1566 elf_local_got_refcounts (abfd) = local_got_refcounts;
1567 _bfd_sparc_elf_local_got_tls_type (abfd)
1568 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1569 }
1570 switch (r_type)
1571 {
1572 case R_SPARC_GOTDATA_OP_HIX22:
1573 case R_SPARC_GOTDATA_OP_LOX10:
1574 break;
1575
1576 default:
1577 local_got_refcounts[r_symndx] += 1;
1578 break;
1579 }
1580 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1581 }
1582
1583 /* If a TLS symbol is accessed using IE at least once,
1584 there is no point to use dynamic model for it. */
1585 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1586 && (old_tls_type != GOT_TLS_GD
1587 || tls_type != GOT_TLS_IE))
1588 {
1589 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1590 tls_type = old_tls_type;
1591 else
1592 {
1593 _bfd_error_handler
1594 (_("%B: `%s' accessed both as normal and thread local symbol"),
1595 abfd, h ? h->root.root.string : "<local>");
1596 return FALSE;
1597 }
1598 }
1599
1600 if (old_tls_type != tls_type)
1601 {
1602 if (h != NULL)
1603 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1604 else
1605 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1606 }
1607 }
1608
1609 if (htab->elf.sgot == NULL)
1610 {
1611 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1612 return FALSE;
1613 }
1614 break;
1615
1616 case R_SPARC_TLS_GD_CALL:
1617 case R_SPARC_TLS_LDM_CALL:
1618 if (bfd_link_pic (info))
1619 {
1620 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1621 __tls_get_addr. */
1622 struct bfd_link_hash_entry *bh = NULL;
1623 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1624 "__tls_get_addr", 0,
1625 bfd_und_section_ptr, 0,
1626 NULL, FALSE, FALSE,
1627 &bh))
1628 return FALSE;
1629 h = (struct elf_link_hash_entry *) bh;
1630 }
1631 else
1632 break;
1633 /* Fall through */
1634
1635 case R_SPARC_PLT32:
1636 case R_SPARC_WPLT30:
1637 case R_SPARC_HIPLT22:
1638 case R_SPARC_LOPLT10:
1639 case R_SPARC_PCPLT32:
1640 case R_SPARC_PCPLT22:
1641 case R_SPARC_PCPLT10:
1642 case R_SPARC_PLT64:
1643 /* This symbol requires a procedure linkage table entry. We
1644 actually build the entry in adjust_dynamic_symbol,
1645 because this might be a case of linking PIC code without
1646 linking in any dynamic objects, in which case we don't
1647 need to generate a procedure linkage table after all. */
1648
1649 if (h == NULL)
1650 {
1651 if (! ABI_64_P (abfd))
1652 {
1653 /* The Solaris native assembler will generate a WPLT30
1654 reloc for a local symbol if you assemble a call from
1655 one section to another when using -K pic. We treat
1656 it as WDISP30. */
1657 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1658 goto r_sparc_plt32;
1659 break;
1660 }
1661 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1662 else if (r_type == R_SPARC_WPLT30)
1663 break;
1664
1665 /* It does not make sense to have a procedure linkage
1666 table entry for a local symbol. */
1667 bfd_set_error (bfd_error_bad_value);
1668 return FALSE;
1669 }
1670
1671 h->needs_plt = 1;
1672
1673 {
1674 int this_r_type;
1675
1676 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1677 if (this_r_type == R_SPARC_PLT32
1678 || this_r_type == R_SPARC_PLT64)
1679 goto r_sparc_plt32;
1680 }
1681 h->plt.refcount += 1;
1682 break;
1683
1684 case R_SPARC_PC10:
1685 case R_SPARC_PC22:
1686 case R_SPARC_PC_HH22:
1687 case R_SPARC_PC_HM10:
1688 case R_SPARC_PC_LM22:
1689 if (h != NULL)
1690 h->non_got_ref = 1;
1691
1692 if (h != NULL
1693 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1694 break;
1695 /* Fall through. */
1696
1697 case R_SPARC_DISP8:
1698 case R_SPARC_DISP16:
1699 case R_SPARC_DISP32:
1700 case R_SPARC_DISP64:
1701 case R_SPARC_WDISP30:
1702 case R_SPARC_WDISP22:
1703 case R_SPARC_WDISP19:
1704 case R_SPARC_WDISP16:
1705 case R_SPARC_WDISP10:
1706 case R_SPARC_8:
1707 case R_SPARC_16:
1708 case R_SPARC_32:
1709 case R_SPARC_HI22:
1710 case R_SPARC_22:
1711 case R_SPARC_13:
1712 case R_SPARC_LO10:
1713 case R_SPARC_UA16:
1714 case R_SPARC_UA32:
1715 case R_SPARC_10:
1716 case R_SPARC_11:
1717 case R_SPARC_64:
1718 case R_SPARC_OLO10:
1719 case R_SPARC_HH22:
1720 case R_SPARC_HM10:
1721 case R_SPARC_LM22:
1722 case R_SPARC_7:
1723 case R_SPARC_5:
1724 case R_SPARC_6:
1725 case R_SPARC_HIX22:
1726 case R_SPARC_LOX10:
1727 case R_SPARC_H44:
1728 case R_SPARC_M44:
1729 case R_SPARC_L44:
1730 case R_SPARC_H34:
1731 case R_SPARC_UA64:
1732 if (h != NULL)
1733 h->non_got_ref = 1;
1734
1735 r_sparc_plt32:
1736 if (h != NULL && !bfd_link_pic (info))
1737 {
1738 /* We may need a .plt entry if the function this reloc
1739 refers to is in a shared lib. */
1740 h->plt.refcount += 1;
1741 }
1742
1743 /* If we are creating a shared library, and this is a reloc
1744 against a global symbol, or a non PC relative reloc
1745 against a local symbol, then we need to copy the reloc
1746 into the shared library. However, if we are linking with
1747 -Bsymbolic, we do not need to copy a reloc against a
1748 global symbol which is defined in an object we are
1749 including in the link (i.e., DEF_REGULAR is set). At
1750 this point we have not seen all the input files, so it is
1751 possible that DEF_REGULAR is not set now but will be set
1752 later (it is never cleared). In case of a weak definition,
1753 DEF_REGULAR may be cleared later by a strong definition in
1754 a shared library. We account for that possibility below by
1755 storing information in the relocs_copied field of the hash
1756 table entry. A similar situation occurs when creating
1757 shared libraries and symbol visibility changes render the
1758 symbol local.
1759
1760 If on the other hand, we are creating an executable, we
1761 may need to keep relocations for symbols satisfied by a
1762 dynamic library if we manage to avoid copy relocs for the
1763 symbol. */
1764 if ((bfd_link_pic (info)
1765 && (sec->flags & SEC_ALLOC) != 0
1766 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1767 || (h != NULL
1768 && (! SYMBOLIC_BIND (info, h)
1769 || h->root.type == bfd_link_hash_defweak
1770 || !h->def_regular))))
1771 || (!bfd_link_pic (info)
1772 && (sec->flags & SEC_ALLOC) != 0
1773 && h != NULL
1774 && (h->root.type == bfd_link_hash_defweak
1775 || !h->def_regular))
1776 || (!bfd_link_pic (info)
1777 && h != NULL
1778 && h->type == STT_GNU_IFUNC))
1779 {
1780 struct _bfd_sparc_elf_dyn_relocs *p;
1781 struct _bfd_sparc_elf_dyn_relocs **head;
1782
1783 /* When creating a shared object, we must copy these
1784 relocs into the output file. We create a reloc
1785 section in dynobj and make room for the reloc. */
1786 if (sreloc == NULL)
1787 {
1788 sreloc = _bfd_elf_make_dynamic_reloc_section
1789 (sec, htab->elf.dynobj, htab->word_align_power,
1790 abfd, /*rela?*/ TRUE);
1791
1792 if (sreloc == NULL)
1793 return FALSE;
1794 }
1795
1796 /* If this is a global symbol, we count the number of
1797 relocations we need for this symbol. */
1798 if (h != NULL)
1799 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1800 else
1801 {
1802 /* Track dynamic relocs needed for local syms too.
1803 We really need local syms available to do this
1804 easily. Oh well. */
1805 asection *s;
1806 void *vpp;
1807
1808 BFD_ASSERT (isym != NULL);
1809 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1810 if (s == NULL)
1811 s = sec;
1812
1813 vpp = &elf_section_data (s)->local_dynrel;
1814 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1815 }
1816
1817 p = *head;
1818 if (p == NULL || p->sec != sec)
1819 {
1820 bfd_size_type amt = sizeof *p;
1821 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1822 bfd_alloc (htab->elf.dynobj, amt));
1823 if (p == NULL)
1824 return FALSE;
1825 p->next = *head;
1826 *head = p;
1827 p->sec = sec;
1828 p->count = 0;
1829 p->pc_count = 0;
1830 }
1831
1832 p->count += 1;
1833 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1834 p->pc_count += 1;
1835 }
1836
1837 break;
1838
1839 case R_SPARC_GNU_VTINHERIT:
1840 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1841 return FALSE;
1842 break;
1843
1844 case R_SPARC_GNU_VTENTRY:
1845 BFD_ASSERT (h != NULL);
1846 if (h != NULL
1847 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1848 return FALSE;
1849 break;
1850
1851 case R_SPARC_REGISTER:
1852 /* Nothing to do. */
1853 break;
1854
1855 default:
1856 break;
1857 }
1858 }
1859
1860 return TRUE;
1861 }
1862 \f
1863 asection *
1864 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1865 struct bfd_link_info *info,
1866 Elf_Internal_Rela *rel,
1867 struct elf_link_hash_entry *h,
1868 Elf_Internal_Sym *sym)
1869 {
1870 if (h != NULL)
1871 switch (SPARC_ELF_R_TYPE (rel->r_info))
1872 {
1873 case R_SPARC_GNU_VTINHERIT:
1874 case R_SPARC_GNU_VTENTRY:
1875 return NULL;
1876 }
1877
1878 /* FIXME: The test here, in check_relocs and in relocate_section
1879 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
1880 if (bfd_link_pic (info))
1881 {
1882 switch (SPARC_ELF_R_TYPE (rel->r_info))
1883 {
1884 case R_SPARC_TLS_GD_CALL:
1885 case R_SPARC_TLS_LDM_CALL:
1886 /* This reloc implicitly references __tls_get_addr. We know
1887 another reloc will reference the same symbol as the one
1888 on this reloc, so the real symbol and section will be
1889 gc marked when processing the other reloc. That lets
1890 us handle __tls_get_addr here. */
1891 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1892 FALSE, FALSE, TRUE);
1893 BFD_ASSERT (h != NULL);
1894 h->mark = 1;
1895 if (h->u.weakdef != NULL)
1896 h->u.weakdef->mark = 1;
1897 sym = NULL;
1898 }
1899 }
1900
1901 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1902 }
1903
1904 static Elf_Internal_Rela *
1905 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1906 Elf_Internal_Rela *relend,
1907 bfd_vma offset)
1908 {
1909 while (rel < relend)
1910 {
1911 if (rel->r_offset == offset)
1912 return rel;
1913 rel++;
1914 }
1915 return NULL;
1916 }
1917
1918 /* Update the got entry reference counts for the section being removed. */
1919 bfd_boolean
1920 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1921 asection *sec, const Elf_Internal_Rela *relocs)
1922 {
1923 struct _bfd_sparc_elf_link_hash_table *htab;
1924 Elf_Internal_Shdr *symtab_hdr;
1925 struct elf_link_hash_entry **sym_hashes;
1926 bfd_signed_vma *local_got_refcounts;
1927 const Elf_Internal_Rela *rel, *relend;
1928
1929 if (bfd_link_relocatable (info))
1930 return TRUE;
1931
1932 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1933
1934 elf_section_data (sec)->local_dynrel = NULL;
1935
1936 htab = _bfd_sparc_elf_hash_table (info);
1937 BFD_ASSERT (htab != NULL);
1938 symtab_hdr = &elf_symtab_hdr (abfd);
1939 sym_hashes = elf_sym_hashes (abfd);
1940 local_got_refcounts = elf_local_got_refcounts (abfd);
1941
1942 relend = relocs + sec->reloc_count;
1943 for (rel = relocs; rel < relend; rel++)
1944 {
1945 unsigned long r_symndx;
1946 unsigned int r_type;
1947 struct elf_link_hash_entry *h = NULL;
1948
1949 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1950 if (r_symndx >= symtab_hdr->sh_info)
1951 {
1952 struct _bfd_sparc_elf_link_hash_entry *eh;
1953 struct _bfd_sparc_elf_dyn_relocs **pp;
1954 struct _bfd_sparc_elf_dyn_relocs *p;
1955
1956 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1957 while (h->root.type == bfd_link_hash_indirect
1958 || h->root.type == bfd_link_hash_warning)
1959 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1960 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1961 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1962 if (p->sec == sec)
1963 {
1964 /* Everything must go for SEC. */
1965 *pp = p->next;
1966 break;
1967 }
1968 }
1969
1970 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1971 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1972 switch (r_type)
1973 {
1974 case R_SPARC_TLS_LDM_HI22:
1975 case R_SPARC_TLS_LDM_LO10:
1976 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1977 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1978 break;
1979
1980 case R_SPARC_TLS_GD_HI22:
1981 case R_SPARC_TLS_GD_LO10:
1982 case R_SPARC_TLS_IE_HI22:
1983 case R_SPARC_TLS_IE_LO10:
1984 case R_SPARC_GOT10:
1985 case R_SPARC_GOT13:
1986 case R_SPARC_GOT22:
1987 case R_SPARC_GOTDATA_HIX22:
1988 case R_SPARC_GOTDATA_LOX10:
1989 case R_SPARC_GOTDATA_OP_HIX22:
1990 case R_SPARC_GOTDATA_OP_LOX10:
1991 if (h != NULL)
1992 {
1993 if (h->got.refcount > 0)
1994 h->got.refcount--;
1995 }
1996 else
1997 {
1998 switch (r_type)
1999 {
2000 case R_SPARC_GOTDATA_OP_HIX22:
2001 case R_SPARC_GOTDATA_OP_LOX10:
2002 break;
2003
2004 default:
2005 if (local_got_refcounts[r_symndx] > 0)
2006 local_got_refcounts[r_symndx]--;
2007 break;
2008 }
2009 }
2010 break;
2011
2012 case R_SPARC_PC10:
2013 case R_SPARC_PC22:
2014 case R_SPARC_PC_HH22:
2015 case R_SPARC_PC_HM10:
2016 case R_SPARC_PC_LM22:
2017 if (h != NULL
2018 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2019 break;
2020 /* Fall through. */
2021
2022 case R_SPARC_DISP8:
2023 case R_SPARC_DISP16:
2024 case R_SPARC_DISP32:
2025 case R_SPARC_DISP64:
2026 case R_SPARC_WDISP30:
2027 case R_SPARC_WDISP22:
2028 case R_SPARC_WDISP19:
2029 case R_SPARC_WDISP16:
2030 case R_SPARC_WDISP10:
2031 case R_SPARC_8:
2032 case R_SPARC_16:
2033 case R_SPARC_32:
2034 case R_SPARC_HI22:
2035 case R_SPARC_22:
2036 case R_SPARC_13:
2037 case R_SPARC_LO10:
2038 case R_SPARC_UA16:
2039 case R_SPARC_UA32:
2040 case R_SPARC_PLT32:
2041 case R_SPARC_10:
2042 case R_SPARC_11:
2043 case R_SPARC_64:
2044 case R_SPARC_OLO10:
2045 case R_SPARC_HH22:
2046 case R_SPARC_HM10:
2047 case R_SPARC_LM22:
2048 case R_SPARC_7:
2049 case R_SPARC_5:
2050 case R_SPARC_6:
2051 case R_SPARC_HIX22:
2052 case R_SPARC_LOX10:
2053 case R_SPARC_H44:
2054 case R_SPARC_M44:
2055 case R_SPARC_L44:
2056 case R_SPARC_H34:
2057 case R_SPARC_UA64:
2058 if (bfd_link_pic (info))
2059 break;
2060 /* Fall through. */
2061
2062 case R_SPARC_WPLT30:
2063 if (h != NULL)
2064 {
2065 if (h->plt.refcount > 0)
2066 h->plt.refcount--;
2067 }
2068 break;
2069
2070 default:
2071 break;
2072 }
2073 }
2074
2075 return TRUE;
2076 }
2077
2078 /* Adjust a symbol defined by a dynamic object and referenced by a
2079 regular object. The current definition is in some section of the
2080 dynamic object, but we're not including those sections. We have to
2081 change the definition to something the rest of the link can
2082 understand. */
2083
2084 bfd_boolean
2085 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2086 struct elf_link_hash_entry *h)
2087 {
2088 struct _bfd_sparc_elf_link_hash_table *htab;
2089 struct _bfd_sparc_elf_link_hash_entry * eh;
2090 struct _bfd_sparc_elf_dyn_relocs *p;
2091 asection *s;
2092
2093 htab = _bfd_sparc_elf_hash_table (info);
2094 BFD_ASSERT (htab != NULL);
2095
2096 /* Make sure we know what is going on here. */
2097 BFD_ASSERT (htab->elf.dynobj != NULL
2098 && (h->needs_plt
2099 || h->type == STT_GNU_IFUNC
2100 || h->u.weakdef != NULL
2101 || (h->def_dynamic
2102 && h->ref_regular
2103 && !h->def_regular)));
2104
2105 /* If this is a function, put it in the procedure linkage table. We
2106 will fill in the contents of the procedure linkage table later
2107 (although we could actually do it here). The STT_NOTYPE
2108 condition is a hack specifically for the Oracle libraries
2109 delivered for Solaris; for some inexplicable reason, they define
2110 some of their functions as STT_NOTYPE when they really should be
2111 STT_FUNC. */
2112 if (h->type == STT_FUNC
2113 || h->type == STT_GNU_IFUNC
2114 || h->needs_plt
2115 || (h->type == STT_NOTYPE
2116 && (h->root.type == bfd_link_hash_defined
2117 || h->root.type == bfd_link_hash_defweak)
2118 && (h->root.u.def.section->flags & SEC_CODE) != 0))
2119 {
2120 if (h->plt.refcount <= 0
2121 || (h->type != STT_GNU_IFUNC
2122 && (SYMBOL_CALLS_LOCAL (info, h)
2123 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2124 && h->root.type == bfd_link_hash_undefweak))))
2125 {
2126 /* This case can occur if we saw a WPLT30 reloc in an input
2127 file, but the symbol was never referred to by a dynamic
2128 object, or if all references were garbage collected. In
2129 such a case, we don't actually need to build a procedure
2130 linkage table, and we can just do a WDISP30 reloc instead. */
2131 h->plt.offset = (bfd_vma) -1;
2132 h->needs_plt = 0;
2133 }
2134
2135 return TRUE;
2136 }
2137 else
2138 h->plt.offset = (bfd_vma) -1;
2139
2140 /* If this is a weak symbol, and there is a real definition, the
2141 processor independent code will have arranged for us to see the
2142 real definition first, and we can just use the same value. */
2143 if (h->u.weakdef != NULL)
2144 {
2145 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2146 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2147 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2148 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2149 return TRUE;
2150 }
2151
2152 /* This is a reference to a symbol defined by a dynamic object which
2153 is not a function. */
2154
2155 /* If we are creating a shared library, we must presume that the
2156 only references to the symbol are via the global offset table.
2157 For such cases we need not do anything here; the relocations will
2158 be handled correctly by relocate_section. */
2159 if (bfd_link_pic (info))
2160 return TRUE;
2161
2162 /* If there are no references to this symbol that do not use the
2163 GOT, we don't need to generate a copy reloc. */
2164 if (!h->non_got_ref)
2165 return TRUE;
2166
2167 /* If -z nocopyreloc was given, we won't generate them either. */
2168 if (info->nocopyreloc)
2169 {
2170 h->non_got_ref = 0;
2171 return TRUE;
2172 }
2173
2174 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2175 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2176 {
2177 s = p->sec->output_section;
2178 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2179 break;
2180 }
2181
2182 /* If we didn't find any dynamic relocs in read-only sections, then
2183 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2184 if (p == NULL)
2185 {
2186 h->non_got_ref = 0;
2187 return TRUE;
2188 }
2189
2190 /* We must allocate the symbol in our .dynbss section, which will
2191 become part of the .bss section of the executable. There will be
2192 an entry for this symbol in the .dynsym section. The dynamic
2193 object will contain position independent code, so all references
2194 from the dynamic object to this symbol will go through the global
2195 offset table. The dynamic linker will use the .dynsym entry to
2196 determine the address it must put in the global offset table, so
2197 both the dynamic object and the regular object will refer to the
2198 same memory location for the variable. */
2199
2200 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2201 to copy the initial value out of the dynamic object and into the
2202 runtime process image. We need to remember the offset into the
2203 .rel.bss section we are going to use. */
2204 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2205 {
2206 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
2207 h->needs_copy = 1;
2208 }
2209
2210 s = htab->sdynbss;
2211
2212 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2213 }
2214
2215 /* Allocate space in .plt, .got and associated reloc sections for
2216 dynamic relocs. */
2217
2218 static bfd_boolean
2219 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2220 {
2221 struct bfd_link_info *info;
2222 struct _bfd_sparc_elf_link_hash_table *htab;
2223 struct _bfd_sparc_elf_link_hash_entry *eh;
2224 struct _bfd_sparc_elf_dyn_relocs *p;
2225
2226 if (h->root.type == bfd_link_hash_indirect)
2227 return TRUE;
2228
2229 info = (struct bfd_link_info *) inf;
2230 htab = _bfd_sparc_elf_hash_table (info);
2231 BFD_ASSERT (htab != NULL);
2232
2233 if ((htab->elf.dynamic_sections_created
2234 && h->plt.refcount > 0)
2235 || (h->type == STT_GNU_IFUNC
2236 && h->def_regular
2237 && h->ref_regular))
2238 {
2239 /* Make sure this symbol is output as a dynamic symbol.
2240 Undefined weak syms won't yet be marked as dynamic. */
2241 if (h->dynindx == -1
2242 && !h->forced_local)
2243 {
2244 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2245 return FALSE;
2246 }
2247
2248 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
2249 || (h->type == STT_GNU_IFUNC
2250 && h->def_regular))
2251 {
2252 asection *s = htab->elf.splt;
2253
2254 if (s == NULL)
2255 s = htab->elf.iplt;
2256
2257 /* Allocate room for the header. */
2258 if (s->size == 0)
2259 {
2260 s->size = htab->plt_header_size;
2261
2262 /* Allocate space for the .rela.plt.unloaded relocations. */
2263 if (htab->is_vxworks && !bfd_link_pic (info))
2264 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2265 }
2266
2267 /* The procedure linkage table size is bounded by the magnitude
2268 of the offset we can describe in the entry. */
2269 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2270 (((bfd_vma)1 << 31) << 1) : 0x400000))
2271 {
2272 bfd_set_error (bfd_error_bad_value);
2273 return FALSE;
2274 }
2275
2276 if (SPARC_ELF_WORD_BYTES(htab) == 8
2277 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2278 {
2279 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2280
2281
2282 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2283
2284 h->plt.offset = (s->size - (off * 8));
2285 }
2286 else
2287 h->plt.offset = s->size;
2288
2289 /* If this symbol is not defined in a regular file, and we are
2290 not generating a shared library, then set the symbol to this
2291 location in the .plt. This is required to make function
2292 pointers compare as equal between the normal executable and
2293 the shared library. */
2294 if (! bfd_link_pic (info)
2295 && !h->def_regular)
2296 {
2297 h->root.u.def.section = s;
2298 h->root.u.def.value = h->plt.offset;
2299 }
2300
2301 /* Make room for this entry. */
2302 s->size += htab->plt_entry_size;
2303
2304 /* We also need to make an entry in the .rela.plt section. */
2305 if (s == htab->elf.splt)
2306 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2307 else
2308 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2309
2310 if (htab->is_vxworks)
2311 {
2312 /* Allocate space for the .got.plt entry. */
2313 htab->elf.sgotplt->size += 4;
2314
2315 /* ...and for the .rela.plt.unloaded relocations. */
2316 if (!bfd_link_pic (info))
2317 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2318 }
2319 }
2320 else
2321 {
2322 h->plt.offset = (bfd_vma) -1;
2323 h->needs_plt = 0;
2324 }
2325 }
2326 else
2327 {
2328 h->plt.offset = (bfd_vma) -1;
2329 h->needs_plt = 0;
2330 }
2331
2332 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2333 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2334 if (h->got.refcount > 0
2335 && !bfd_link_pic (info)
2336 && h->dynindx == -1
2337 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2338 h->got.offset = (bfd_vma) -1;
2339 else if (h->got.refcount > 0)
2340 {
2341 asection *s;
2342 bfd_boolean dyn;
2343 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2344
2345 /* Make sure this symbol is output as a dynamic symbol.
2346 Undefined weak syms won't yet be marked as dynamic. */
2347 if (h->dynindx == -1
2348 && !h->forced_local)
2349 {
2350 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2351 return FALSE;
2352 }
2353
2354 s = htab->elf.sgot;
2355 h->got.offset = s->size;
2356 s->size += SPARC_ELF_WORD_BYTES (htab);
2357 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2358 if (tls_type == GOT_TLS_GD)
2359 s->size += SPARC_ELF_WORD_BYTES (htab);
2360 dyn = htab->elf.dynamic_sections_created;
2361 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2362 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2363 global. */
2364 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2365 || tls_type == GOT_TLS_IE
2366 || h->type == STT_GNU_IFUNC)
2367 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2368 else if (tls_type == GOT_TLS_GD)
2369 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2370 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2371 bfd_link_pic (info),
2372 h))
2373 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2374 }
2375 else
2376 h->got.offset = (bfd_vma) -1;
2377
2378 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2379 if (eh->dyn_relocs == NULL)
2380 return TRUE;
2381
2382 /* In the shared -Bsymbolic case, discard space allocated for
2383 dynamic pc-relative relocs against symbols which turn out to be
2384 defined in regular objects. For the normal shared case, discard
2385 space for pc-relative relocs that have become local due to symbol
2386 visibility changes. */
2387
2388 if (bfd_link_pic (info))
2389 {
2390 if (SYMBOL_CALLS_LOCAL (info, h))
2391 {
2392 struct _bfd_sparc_elf_dyn_relocs **pp;
2393
2394 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2395 {
2396 p->count -= p->pc_count;
2397 p->pc_count = 0;
2398 if (p->count == 0)
2399 *pp = p->next;
2400 else
2401 pp = &p->next;
2402 }
2403 }
2404
2405 if (htab->is_vxworks)
2406 {
2407 struct _bfd_sparc_elf_dyn_relocs **pp;
2408
2409 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2410 {
2411 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2412 *pp = p->next;
2413 else
2414 pp = &p->next;
2415 }
2416 }
2417
2418 /* Also discard relocs on undefined weak syms with non-default
2419 visibility. */
2420 if (eh->dyn_relocs != NULL
2421 && h->root.type == bfd_link_hash_undefweak)
2422 {
2423 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2424 eh->dyn_relocs = NULL;
2425
2426 /* Make sure undefined weak symbols are output as a dynamic
2427 symbol in PIEs. */
2428 else if (h->dynindx == -1
2429 && !h->forced_local)
2430 {
2431 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2432 return FALSE;
2433 }
2434 }
2435 }
2436 else
2437 {
2438 /* For the non-shared case, discard space for relocs against
2439 symbols which turn out to need copy relocs or are not
2440 dynamic. */
2441
2442 if (!h->non_got_ref
2443 && ((h->def_dynamic
2444 && !h->def_regular)
2445 || (htab->elf.dynamic_sections_created
2446 && (h->root.type == bfd_link_hash_undefweak
2447 || h->root.type == bfd_link_hash_undefined))))
2448 {
2449 /* Make sure this symbol is output as a dynamic symbol.
2450 Undefined weak syms won't yet be marked as dynamic. */
2451 if (h->dynindx == -1
2452 && !h->forced_local)
2453 {
2454 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2455 return FALSE;
2456 }
2457
2458 /* If that succeeded, we know we'll be keeping all the
2459 relocs. */
2460 if (h->dynindx != -1)
2461 goto keep;
2462 }
2463
2464 eh->dyn_relocs = NULL;
2465
2466 keep: ;
2467 }
2468
2469 /* Finally, allocate space. */
2470 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2471 {
2472 asection *sreloc = elf_section_data (p->sec)->sreloc;
2473 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2474 }
2475
2476 return TRUE;
2477 }
2478
2479 /* Allocate space in .plt, .got and associated reloc sections for
2480 local dynamic relocs. */
2481
2482 static bfd_boolean
2483 allocate_local_dynrelocs (void **slot, void *inf)
2484 {
2485 struct elf_link_hash_entry *h
2486 = (struct elf_link_hash_entry *) *slot;
2487
2488 if (h->type != STT_GNU_IFUNC
2489 || !h->def_regular
2490 || !h->ref_regular
2491 || !h->forced_local
2492 || h->root.type != bfd_link_hash_defined)
2493 abort ();
2494
2495 return allocate_dynrelocs (h, inf);
2496 }
2497
2498 /* Find any dynamic relocs that apply to read-only sections. */
2499
2500 static bfd_boolean
2501 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2502 {
2503 struct _bfd_sparc_elf_link_hash_entry *eh;
2504 struct _bfd_sparc_elf_dyn_relocs *p;
2505
2506 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2507 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2508 {
2509 asection *s = p->sec->output_section;
2510
2511 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2512 {
2513 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2514
2515 info->flags |= DF_TEXTREL;
2516
2517 /* Not an error, just cut short the traversal. */
2518 return FALSE;
2519 }
2520 }
2521 return TRUE;
2522 }
2523
2524 /* Return true if the dynamic symbol for a given section should be
2525 omitted when creating a shared library. */
2526
2527 bfd_boolean
2528 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2529 struct bfd_link_info *info,
2530 asection *p)
2531 {
2532 /* We keep the .got section symbol so that explicit relocations
2533 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2534 can be turned into relocations against the .got symbol. */
2535 if (strcmp (p->name, ".got") == 0)
2536 return FALSE;
2537
2538 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2539 }
2540
2541 /* Set the sizes of the dynamic sections. */
2542
2543 bfd_boolean
2544 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2545 struct bfd_link_info *info)
2546 {
2547 struct _bfd_sparc_elf_link_hash_table *htab;
2548 bfd *dynobj;
2549 asection *s;
2550 bfd *ibfd;
2551
2552 htab = _bfd_sparc_elf_hash_table (info);
2553 BFD_ASSERT (htab != NULL);
2554 dynobj = htab->elf.dynobj;
2555 BFD_ASSERT (dynobj != NULL);
2556
2557 if (elf_hash_table (info)->dynamic_sections_created)
2558 {
2559 /* Set the contents of the .interp section to the interpreter. */
2560 if (bfd_link_executable (info) && !info->nointerp)
2561 {
2562 s = bfd_get_linker_section (dynobj, ".interp");
2563 BFD_ASSERT (s != NULL);
2564 s->size = htab->dynamic_interpreter_size;
2565 s->contents = (unsigned char *) htab->dynamic_interpreter;
2566 }
2567 }
2568
2569 /* Set up .got offsets for local syms, and space for local dynamic
2570 relocs. */
2571 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2572 {
2573 bfd_signed_vma *local_got;
2574 bfd_signed_vma *end_local_got;
2575 char *local_tls_type;
2576 bfd_size_type locsymcount;
2577 Elf_Internal_Shdr *symtab_hdr;
2578 asection *srel;
2579
2580 if (! is_sparc_elf (ibfd))
2581 continue;
2582
2583 for (s = ibfd->sections; s != NULL; s = s->next)
2584 {
2585 struct _bfd_sparc_elf_dyn_relocs *p;
2586
2587 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2588 {
2589 if (!bfd_is_abs_section (p->sec)
2590 && bfd_is_abs_section (p->sec->output_section))
2591 {
2592 /* Input section has been discarded, either because
2593 it is a copy of a linkonce section or due to
2594 linker script /DISCARD/, so we'll be discarding
2595 the relocs too. */
2596 }
2597 else if (htab->is_vxworks
2598 && strcmp (p->sec->output_section->name,
2599 ".tls_vars") == 0)
2600 {
2601 /* Relocations in vxworks .tls_vars sections are
2602 handled specially by the loader. */
2603 }
2604 else if (p->count != 0)
2605 {
2606 srel = elf_section_data (p->sec)->sreloc;
2607 if (!htab->elf.dynamic_sections_created)
2608 srel = htab->elf.irelplt;
2609 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2610 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2611 info->flags |= DF_TEXTREL;
2612 }
2613 }
2614 }
2615
2616 local_got = elf_local_got_refcounts (ibfd);
2617 if (!local_got)
2618 continue;
2619
2620 symtab_hdr = &elf_symtab_hdr (ibfd);
2621 locsymcount = symtab_hdr->sh_info;
2622 end_local_got = local_got + locsymcount;
2623 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2624 s = htab->elf.sgot;
2625 srel = htab->elf.srelgot;
2626 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2627 {
2628 if (*local_got > 0)
2629 {
2630 *local_got = s->size;
2631 s->size += SPARC_ELF_WORD_BYTES (htab);
2632 if (*local_tls_type == GOT_TLS_GD)
2633 s->size += SPARC_ELF_WORD_BYTES (htab);
2634 if (bfd_link_pic (info)
2635 || *local_tls_type == GOT_TLS_GD
2636 || *local_tls_type == GOT_TLS_IE)
2637 srel->size += SPARC_ELF_RELA_BYTES (htab);
2638 }
2639 else
2640 *local_got = (bfd_vma) -1;
2641 }
2642 }
2643
2644 if (htab->tls_ldm_got.refcount > 0)
2645 {
2646 /* Allocate 2 got entries and 1 dynamic reloc for
2647 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2648 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2649 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2650 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2651 }
2652 else
2653 htab->tls_ldm_got.offset = -1;
2654
2655 /* Allocate global sym .plt and .got entries, and space for global
2656 sym dynamic relocs. */
2657 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2658
2659 /* Allocate .plt and .got entries, and space for local symbols. */
2660 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2661
2662 if (!htab->is_vxworks
2663 && elf_hash_table (info)->dynamic_sections_created)
2664 {
2665 if (! ABI_64_P (output_bfd))
2666 {
2667 /* Make space for the trailing nop in .plt. */
2668 if (htab->elf.splt->size > 0)
2669 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2670 }
2671
2672 /* If the .got section is more than 0x1000 bytes, we add
2673 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2674 bit relocations have a greater chance of working. */
2675 if (htab->elf.sgot->size >= 0x1000
2676 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2677 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2678 }
2679
2680 /* The check_relocs and adjust_dynamic_symbol entry points have
2681 determined the sizes of the various dynamic sections. Allocate
2682 memory for them. */
2683 for (s = dynobj->sections; s != NULL; s = s->next)
2684 {
2685 if ((s->flags & SEC_LINKER_CREATED) == 0)
2686 continue;
2687
2688 if (s == htab->elf.splt
2689 || s == htab->elf.sgot
2690 || s == htab->sdynbss
2691 || s == htab->elf.iplt
2692 || s == htab->elf.sgotplt)
2693 {
2694 /* Strip this section if we don't need it; see the
2695 comment below. */
2696 }
2697 else if (CONST_STRNEQ (s->name, ".rela"))
2698 {
2699 if (s->size != 0)
2700 {
2701 /* We use the reloc_count field as a counter if we need
2702 to copy relocs into the output file. */
2703 s->reloc_count = 0;
2704 }
2705 }
2706 else
2707 {
2708 /* It's not one of our sections. */
2709 continue;
2710 }
2711
2712 if (s->size == 0)
2713 {
2714 /* If we don't need this section, strip it from the
2715 output file. This is mostly to handle .rela.bss and
2716 .rela.plt. We must create both sections in
2717 create_dynamic_sections, because they must be created
2718 before the linker maps input sections to output
2719 sections. The linker does that before
2720 adjust_dynamic_symbol is called, and it is that
2721 function which decides whether anything needs to go
2722 into these sections. */
2723 s->flags |= SEC_EXCLUDE;
2724 continue;
2725 }
2726
2727 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2728 continue;
2729
2730 /* Allocate memory for the section contents. Zero the memory
2731 for the benefit of .rela.plt, which has 4 unused entries
2732 at the beginning, and we don't want garbage. */
2733 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2734 if (s->contents == NULL)
2735 return FALSE;
2736 }
2737
2738 if (elf_hash_table (info)->dynamic_sections_created)
2739 {
2740 /* Add some entries to the .dynamic section. We fill in the
2741 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2742 must add the entries now so that we get the correct size for
2743 the .dynamic section. The DT_DEBUG entry is filled in by the
2744 dynamic linker and used by the debugger. */
2745 #define add_dynamic_entry(TAG, VAL) \
2746 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2747
2748 if (bfd_link_executable (info))
2749 {
2750 if (!add_dynamic_entry (DT_DEBUG, 0))
2751 return FALSE;
2752 }
2753
2754 if (htab->elf.srelplt->size != 0)
2755 {
2756 if (!add_dynamic_entry (DT_PLTGOT, 0)
2757 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2758 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2759 || !add_dynamic_entry (DT_JMPREL, 0))
2760 return FALSE;
2761 }
2762
2763 if (!add_dynamic_entry (DT_RELA, 0)
2764 || !add_dynamic_entry (DT_RELASZ, 0)
2765 || !add_dynamic_entry (DT_RELAENT,
2766 SPARC_ELF_RELA_BYTES (htab)))
2767 return FALSE;
2768
2769 /* If any dynamic relocs apply to a read-only section,
2770 then we need a DT_TEXTREL entry. */
2771 if ((info->flags & DF_TEXTREL) == 0)
2772 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2773
2774 if (info->flags & DF_TEXTREL)
2775 {
2776 if (!add_dynamic_entry (DT_TEXTREL, 0))
2777 return FALSE;
2778 }
2779
2780 if (ABI_64_P (output_bfd))
2781 {
2782 int reg;
2783 struct _bfd_sparc_elf_app_reg * app_regs;
2784 struct elf_strtab_hash *dynstr;
2785 struct elf_link_hash_table *eht = elf_hash_table (info);
2786
2787 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2788 entries if needed. */
2789 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2790 dynstr = eht->dynstr;
2791
2792 for (reg = 0; reg < 4; reg++)
2793 if (app_regs [reg].name != NULL)
2794 {
2795 struct elf_link_local_dynamic_entry *entry, *e;
2796
2797 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2798 return FALSE;
2799
2800 entry = (struct elf_link_local_dynamic_entry *)
2801 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2802 if (entry == NULL)
2803 return FALSE;
2804
2805 /* We cheat here a little bit: the symbol will not be local, so we
2806 put it at the end of the dynlocal linked list. We will fix it
2807 later on, as we have to fix other fields anyway. */
2808 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2809 entry->isym.st_size = 0;
2810 if (*app_regs [reg].name != '\0')
2811 entry->isym.st_name
2812 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2813 else
2814 entry->isym.st_name = 0;
2815 entry->isym.st_other = 0;
2816 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2817 STT_REGISTER);
2818 entry->isym.st_shndx = app_regs [reg].shndx;
2819 entry->isym.st_target_internal = 0;
2820 entry->next = NULL;
2821 entry->input_bfd = output_bfd;
2822 entry->input_indx = -1;
2823
2824 if (eht->dynlocal == NULL)
2825 eht->dynlocal = entry;
2826 else
2827 {
2828 for (e = eht->dynlocal; e->next; e = e->next)
2829 ;
2830 e->next = entry;
2831 }
2832 eht->dynsymcount++;
2833 }
2834 }
2835 if (htab->is_vxworks
2836 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2837 return FALSE;
2838 }
2839 #undef add_dynamic_entry
2840
2841 return TRUE;
2842 }
2843 \f
2844 bfd_boolean
2845 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2846 {
2847 if (!sec->used_by_bfd)
2848 {
2849 struct _bfd_sparc_elf_section_data *sdata;
2850 bfd_size_type amt = sizeof (*sdata);
2851
2852 sdata = bfd_zalloc (abfd, amt);
2853 if (sdata == NULL)
2854 return FALSE;
2855 sec->used_by_bfd = sdata;
2856 }
2857
2858 return _bfd_elf_new_section_hook (abfd, sec);
2859 }
2860
2861 bfd_boolean
2862 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2863 struct bfd_section *section,
2864 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2865 bfd_boolean *again)
2866 {
2867 if (bfd_link_relocatable (link_info))
2868 (*link_info->callbacks->einfo)
2869 (_("%P%F: --relax and -r may not be used together\n"));
2870
2871 *again = FALSE;
2872 sec_do_relax (section) = 1;
2873 return TRUE;
2874 }
2875 \f
2876 /* Return the base VMA address which should be subtracted from real addresses
2877 when resolving @dtpoff relocation.
2878 This is PT_TLS segment p_vaddr. */
2879
2880 static bfd_vma
2881 dtpoff_base (struct bfd_link_info *info)
2882 {
2883 /* If tls_sec is NULL, we should have signalled an error already. */
2884 if (elf_hash_table (info)->tls_sec == NULL)
2885 return 0;
2886 return elf_hash_table (info)->tls_sec->vma;
2887 }
2888
2889 /* Return the relocation value for @tpoff relocation
2890 if STT_TLS virtual address is ADDRESS. */
2891
2892 static bfd_vma
2893 tpoff (struct bfd_link_info *info, bfd_vma address)
2894 {
2895 struct elf_link_hash_table *htab = elf_hash_table (info);
2896 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2897 bfd_vma static_tls_size;
2898
2899 /* If tls_sec is NULL, we should have signalled an error already. */
2900 if (htab->tls_sec == NULL)
2901 return 0;
2902
2903 /* Consider special static TLS alignment requirements. */
2904 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2905 return address - static_tls_size - htab->tls_sec->vma;
2906 }
2907
2908 /* Return the relocation value for a %gdop relocation. */
2909
2910 static bfd_vma
2911 gdopoff (struct bfd_link_info *info, bfd_vma address)
2912 {
2913 struct elf_link_hash_table *htab = elf_hash_table (info);
2914 bfd_vma got_base;
2915
2916 got_base = (htab->hgot->root.u.def.value
2917 + htab->hgot->root.u.def.section->output_offset
2918 + htab->hgot->root.u.def.section->output_section->vma);
2919
2920 return address - got_base;
2921 }
2922
2923 /* Relocate a SPARC ELF section. */
2924
2925 bfd_boolean
2926 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2927 struct bfd_link_info *info,
2928 bfd *input_bfd,
2929 asection *input_section,
2930 bfd_byte *contents,
2931 Elf_Internal_Rela *relocs,
2932 Elf_Internal_Sym *local_syms,
2933 asection **local_sections)
2934 {
2935 struct _bfd_sparc_elf_link_hash_table *htab;
2936 Elf_Internal_Shdr *symtab_hdr;
2937 struct elf_link_hash_entry **sym_hashes;
2938 bfd_vma *local_got_offsets;
2939 bfd_vma got_base;
2940 asection *sreloc;
2941 Elf_Internal_Rela *rel;
2942 Elf_Internal_Rela *relend;
2943 int num_relocs;
2944 bfd_boolean is_vxworks_tls;
2945
2946 htab = _bfd_sparc_elf_hash_table (info);
2947 BFD_ASSERT (htab != NULL);
2948 symtab_hdr = &elf_symtab_hdr (input_bfd);
2949 sym_hashes = elf_sym_hashes (input_bfd);
2950 local_got_offsets = elf_local_got_offsets (input_bfd);
2951
2952 if (elf_hash_table (info)->hgot == NULL)
2953 got_base = 0;
2954 else
2955 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2956
2957 sreloc = elf_section_data (input_section)->sreloc;
2958 /* We have to handle relocations in vxworks .tls_vars sections
2959 specially, because the dynamic loader is 'weird'. */
2960 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
2961 && !strcmp (input_section->output_section->name,
2962 ".tls_vars"));
2963
2964 rel = relocs;
2965 if (ABI_64_P (output_bfd))
2966 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2967 else
2968 num_relocs = input_section->reloc_count;
2969 relend = relocs + num_relocs;
2970 for (; rel < relend; rel++)
2971 {
2972 int r_type, tls_type;
2973 reloc_howto_type *howto;
2974 unsigned long r_symndx;
2975 struct elf_link_hash_entry *h;
2976 Elf_Internal_Sym *sym;
2977 asection *sec;
2978 bfd_vma relocation, off;
2979 bfd_reloc_status_type r;
2980 bfd_boolean is_plt = FALSE;
2981 bfd_boolean unresolved_reloc;
2982
2983 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2984 if (r_type == R_SPARC_GNU_VTINHERIT
2985 || r_type == R_SPARC_GNU_VTENTRY)
2986 continue;
2987
2988 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2989 {
2990 bfd_set_error (bfd_error_bad_value);
2991 return FALSE;
2992 }
2993 howto = _bfd_sparc_elf_howto_table + r_type;
2994
2995 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2996 h = NULL;
2997 sym = NULL;
2998 sec = NULL;
2999 unresolved_reloc = FALSE;
3000 if (r_symndx < symtab_hdr->sh_info)
3001 {
3002 sym = local_syms + r_symndx;
3003 sec = local_sections[r_symndx];
3004 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3005
3006 if (!bfd_link_relocatable (info)
3007 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3008 {
3009 /* Relocate against local STT_GNU_IFUNC symbol. */
3010 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3011 rel, FALSE);
3012 if (h == NULL)
3013 abort ();
3014
3015 /* Set STT_GNU_IFUNC symbol value. */
3016 h->root.u.def.value = sym->st_value;
3017 h->root.u.def.section = sec;
3018 }
3019 }
3020 else
3021 {
3022 bfd_boolean warned, ignored;
3023
3024 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3025 r_symndx, symtab_hdr, sym_hashes,
3026 h, sec, relocation,
3027 unresolved_reloc, warned, ignored);
3028 if (warned)
3029 {
3030 /* To avoid generating warning messages about truncated
3031 relocations, set the relocation's address to be the same as
3032 the start of this section. */
3033 if (input_section->output_section != NULL)
3034 relocation = input_section->output_section->vma;
3035 else
3036 relocation = 0;
3037 }
3038 }
3039
3040 if (sec != NULL && discarded_section (sec))
3041 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3042 rel, 1, relend, howto, 0, contents);
3043
3044 if (bfd_link_relocatable (info))
3045 continue;
3046
3047 if (h != NULL
3048 && h->type == STT_GNU_IFUNC
3049 && h->def_regular)
3050 {
3051 asection *plt_sec;
3052 const char *name;
3053
3054 if ((input_section->flags & SEC_ALLOC) == 0
3055 || h->plt.offset == (bfd_vma) -1)
3056 abort ();
3057
3058 plt_sec = htab->elf.splt;
3059 if (! plt_sec)
3060 plt_sec =htab->elf.iplt;
3061
3062 switch (r_type)
3063 {
3064 case R_SPARC_GOTDATA_OP:
3065 continue;
3066
3067 case R_SPARC_GOTDATA_OP_HIX22:
3068 case R_SPARC_GOTDATA_OP_LOX10:
3069 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3070 ? R_SPARC_GOT22
3071 : R_SPARC_GOT10);
3072 howto = _bfd_sparc_elf_howto_table + r_type;
3073 /* Fall through. */
3074
3075 case R_SPARC_GOT10:
3076 case R_SPARC_GOT13:
3077 case R_SPARC_GOT22:
3078 if (htab->elf.sgot == NULL)
3079 abort ();
3080 off = h->got.offset;
3081 if (off == (bfd_vma) -1)
3082 abort();
3083 relocation = htab->elf.sgot->output_offset + off - got_base;
3084 goto do_relocation;
3085
3086 case R_SPARC_WPLT30:
3087 case R_SPARC_WDISP30:
3088 relocation = (plt_sec->output_section->vma
3089 + plt_sec->output_offset + h->plt.offset);
3090 goto do_relocation;
3091
3092 case R_SPARC_32:
3093 case R_SPARC_64:
3094 if (bfd_link_pic (info) && h->non_got_ref)
3095 {
3096 Elf_Internal_Rela outrel;
3097 bfd_vma offset;
3098
3099 offset = _bfd_elf_section_offset (output_bfd, info,
3100 input_section,
3101 rel->r_offset);
3102 if (offset == (bfd_vma) -1
3103 || offset == (bfd_vma) -2)
3104 abort();
3105
3106 outrel.r_offset = (input_section->output_section->vma
3107 + input_section->output_offset
3108 + offset);
3109
3110 if (h->dynindx == -1
3111 || h->forced_local
3112 || bfd_link_executable (info))
3113 {
3114 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3115 0, R_SPARC_IRELATIVE);
3116 outrel.r_addend = relocation + rel->r_addend;
3117 }
3118 else
3119 {
3120 if (h->dynindx == -1)
3121 abort();
3122 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3123 outrel.r_addend = rel->r_addend;
3124 }
3125
3126 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3127 continue;
3128 }
3129
3130 relocation = (plt_sec->output_section->vma
3131 + plt_sec->output_offset + h->plt.offset);
3132 goto do_relocation;
3133
3134 case R_SPARC_HI22:
3135 case R_SPARC_LO10:
3136 /* We should only see such relocs in static links. */
3137 if (bfd_link_pic (info))
3138 abort();
3139 relocation = (plt_sec->output_section->vma
3140 + plt_sec->output_offset + h->plt.offset);
3141 goto do_relocation;
3142
3143 default:
3144 if (h->root.root.string)
3145 name = h->root.root.string;
3146 else
3147 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3148 NULL);
3149 _bfd_error_handler
3150 (_("%B: relocation %s against STT_GNU_IFUNC "
3151 "symbol `%s' isn't handled by %s"), input_bfd,
3152 _bfd_sparc_elf_howto_table[r_type].name,
3153 name, __FUNCTION__);
3154 bfd_set_error (bfd_error_bad_value);
3155 return FALSE;
3156 }
3157 }
3158
3159 switch (r_type)
3160 {
3161 case R_SPARC_GOTDATA_OP_HIX22:
3162 case R_SPARC_GOTDATA_OP_LOX10:
3163 if (SYMBOL_REFERENCES_LOCAL (info, h))
3164 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3165 ? R_SPARC_GOTDATA_HIX22
3166 : R_SPARC_GOTDATA_LOX10);
3167 else
3168 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3169 ? R_SPARC_GOT22
3170 : R_SPARC_GOT10);
3171 howto = _bfd_sparc_elf_howto_table + r_type;
3172 break;
3173
3174 case R_SPARC_GOTDATA_OP:
3175 if (SYMBOL_REFERENCES_LOCAL (info, h))
3176 {
3177 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3178
3179 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3180 relocation = 0x80000000 | (insn & 0x3e07c01f);
3181 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3182 }
3183 continue;
3184 }
3185
3186 switch (r_type)
3187 {
3188 case R_SPARC_GOTDATA_HIX22:
3189 case R_SPARC_GOTDATA_LOX10:
3190 relocation = gdopoff (info, relocation);
3191 break;
3192
3193 case R_SPARC_GOT10:
3194 case R_SPARC_GOT13:
3195 case R_SPARC_GOT22:
3196 /* Relocation is to the entry for this symbol in the global
3197 offset table. */
3198 if (htab->elf.sgot == NULL)
3199 abort ();
3200
3201 if (h != NULL)
3202 {
3203 bfd_boolean dyn;
3204
3205 off = h->got.offset;
3206 BFD_ASSERT (off != (bfd_vma) -1);
3207 dyn = elf_hash_table (info)->dynamic_sections_created;
3208
3209 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3210 bfd_link_pic (info),
3211 h)
3212 || (bfd_link_pic (info)
3213 && SYMBOL_REFERENCES_LOCAL (info, h)))
3214 {
3215 /* This is actually a static link, or it is a
3216 -Bsymbolic link and the symbol is defined
3217 locally, or the symbol was forced to be local
3218 because of a version file. We must initialize
3219 this entry in the global offset table. Since the
3220 offset must always be a multiple of 8 for 64-bit
3221 and 4 for 32-bit, we use the least significant bit
3222 to record whether we have initialized it already.
3223
3224 When doing a dynamic link, we create a .rela.got
3225 relocation entry to initialize the value. This
3226 is done in the finish_dynamic_symbol routine. */
3227 if ((off & 1) != 0)
3228 off &= ~1;
3229 else
3230 {
3231 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3232 htab->elf.sgot->contents + off);
3233 h->got.offset |= 1;
3234 }
3235 }
3236 else
3237 unresolved_reloc = FALSE;
3238 }
3239 else
3240 {
3241 BFD_ASSERT (local_got_offsets != NULL
3242 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3243
3244 off = local_got_offsets[r_symndx];
3245
3246 /* The offset must always be a multiple of 8 on 64-bit and
3247 4 on 32-bit. We use the least significant bit to record
3248 whether we have already processed this entry. */
3249 if ((off & 1) != 0)
3250 off &= ~1;
3251 else
3252 {
3253
3254 if (bfd_link_pic (info))
3255 {
3256 asection *s;
3257 Elf_Internal_Rela outrel;
3258
3259 /* We need to generate a R_SPARC_RELATIVE reloc
3260 for the dynamic linker. */
3261 s = htab->elf.srelgot;
3262 BFD_ASSERT (s != NULL);
3263
3264 outrel.r_offset = (htab->elf.sgot->output_section->vma
3265 + htab->elf.sgot->output_offset
3266 + off);
3267 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3268 0, R_SPARC_RELATIVE);
3269 outrel.r_addend = relocation;
3270 relocation = 0;
3271 sparc_elf_append_rela (output_bfd, s, &outrel);
3272 }
3273
3274 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3275 htab->elf.sgot->contents + off);
3276 local_got_offsets[r_symndx] |= 1;
3277 }
3278 }
3279 relocation = htab->elf.sgot->output_offset + off - got_base;
3280 break;
3281
3282 case R_SPARC_PLT32:
3283 case R_SPARC_PLT64:
3284 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3285 {
3286 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3287 goto r_sparc_plt32;
3288 }
3289 /* Fall through. */
3290
3291 case R_SPARC_WPLT30:
3292 case R_SPARC_HIPLT22:
3293 case R_SPARC_LOPLT10:
3294 case R_SPARC_PCPLT32:
3295 case R_SPARC_PCPLT22:
3296 case R_SPARC_PCPLT10:
3297 r_sparc_wplt30:
3298 /* Relocation is to the entry for this symbol in the
3299 procedure linkage table. */
3300
3301 if (! ABI_64_P (output_bfd))
3302 {
3303 /* The Solaris native assembler will generate a WPLT30 reloc
3304 for a local symbol if you assemble a call from one
3305 section to another when using -K pic. We treat it as
3306 WDISP30. */
3307 if (h == NULL)
3308 break;
3309 }
3310 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3311 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3312 break;
3313 else
3314 {
3315 BFD_ASSERT (h != NULL);
3316 }
3317
3318 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3319 {
3320 /* We didn't make a PLT entry for this symbol. This
3321 happens when statically linking PIC code, or when
3322 using -Bsymbolic. */
3323 break;
3324 }
3325
3326 relocation = (htab->elf.splt->output_section->vma
3327 + htab->elf.splt->output_offset
3328 + h->plt.offset);
3329 unresolved_reloc = FALSE;
3330 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3331 {
3332 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3333 is_plt = TRUE;
3334 goto r_sparc_plt32;
3335 }
3336 break;
3337
3338 case R_SPARC_PC10:
3339 case R_SPARC_PC22:
3340 case R_SPARC_PC_HH22:
3341 case R_SPARC_PC_HM10:
3342 case R_SPARC_PC_LM22:
3343 if (h != NULL
3344 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3345 break;
3346 /* Fall through. */
3347 case R_SPARC_DISP8:
3348 case R_SPARC_DISP16:
3349 case R_SPARC_DISP32:
3350 case R_SPARC_DISP64:
3351 case R_SPARC_WDISP30:
3352 case R_SPARC_WDISP22:
3353 case R_SPARC_WDISP19:
3354 case R_SPARC_WDISP16:
3355 case R_SPARC_WDISP10:
3356 case R_SPARC_8:
3357 case R_SPARC_16:
3358 case R_SPARC_32:
3359 case R_SPARC_HI22:
3360 case R_SPARC_22:
3361 case R_SPARC_13:
3362 case R_SPARC_LO10:
3363 case R_SPARC_UA16:
3364 case R_SPARC_UA32:
3365 case R_SPARC_10:
3366 case R_SPARC_11:
3367 case R_SPARC_64:
3368 case R_SPARC_OLO10:
3369 case R_SPARC_HH22:
3370 case R_SPARC_HM10:
3371 case R_SPARC_LM22:
3372 case R_SPARC_7:
3373 case R_SPARC_5:
3374 case R_SPARC_6:
3375 case R_SPARC_HIX22:
3376 case R_SPARC_LOX10:
3377 case R_SPARC_H44:
3378 case R_SPARC_M44:
3379 case R_SPARC_L44:
3380 case R_SPARC_H34:
3381 case R_SPARC_UA64:
3382 r_sparc_plt32:
3383 if ((input_section->flags & SEC_ALLOC) == 0
3384 || is_vxworks_tls)
3385 break;
3386
3387 if ((bfd_link_pic (info)
3388 && (h == NULL
3389 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3390 || h->root.type != bfd_link_hash_undefweak)
3391 && (! howto->pc_relative
3392 || !SYMBOL_CALLS_LOCAL (info, h)))
3393 || (!bfd_link_pic (info)
3394 && h != NULL
3395 && h->dynindx != -1
3396 && !h->non_got_ref
3397 && ((h->def_dynamic
3398 && !h->def_regular)
3399 || h->root.type == bfd_link_hash_undefweak
3400 || h->root.type == bfd_link_hash_undefined)))
3401 {
3402 Elf_Internal_Rela outrel;
3403 bfd_boolean skip, relocate = FALSE;
3404
3405 /* When generating a shared object, these relocations
3406 are copied into the output file to be resolved at run
3407 time. */
3408
3409 BFD_ASSERT (sreloc != NULL);
3410
3411 skip = FALSE;
3412
3413 outrel.r_offset =
3414 _bfd_elf_section_offset (output_bfd, info, input_section,
3415 rel->r_offset);
3416 if (outrel.r_offset == (bfd_vma) -1)
3417 skip = TRUE;
3418 else if (outrel.r_offset == (bfd_vma) -2)
3419 skip = TRUE, relocate = TRUE;
3420 outrel.r_offset += (input_section->output_section->vma
3421 + input_section->output_offset);
3422
3423 /* Optimize unaligned reloc usage now that we know where
3424 it finally resides. */
3425 switch (r_type)
3426 {
3427 case R_SPARC_16:
3428 if (outrel.r_offset & 1)
3429 r_type = R_SPARC_UA16;
3430 break;
3431 case R_SPARC_UA16:
3432 if (!(outrel.r_offset & 1))
3433 r_type = R_SPARC_16;
3434 break;
3435 case R_SPARC_32:
3436 if (outrel.r_offset & 3)
3437 r_type = R_SPARC_UA32;
3438 break;
3439 case R_SPARC_UA32:
3440 if (!(outrel.r_offset & 3))
3441 r_type = R_SPARC_32;
3442 break;
3443 case R_SPARC_64:
3444 if (outrel.r_offset & 7)
3445 r_type = R_SPARC_UA64;
3446 break;
3447 case R_SPARC_UA64:
3448 if (!(outrel.r_offset & 7))
3449 r_type = R_SPARC_64;
3450 break;
3451 case R_SPARC_DISP8:
3452 case R_SPARC_DISP16:
3453 case R_SPARC_DISP32:
3454 case R_SPARC_DISP64:
3455 /* If the symbol is not dynamic, we should not keep
3456 a dynamic relocation. But an .rela.* slot has been
3457 allocated for it, output R_SPARC_NONE.
3458 FIXME: Add code tracking needed dynamic relocs as
3459 e.g. i386 has. */
3460 if (h->dynindx == -1)
3461 skip = TRUE, relocate = TRUE;
3462 break;
3463 }
3464
3465 if (skip)
3466 memset (&outrel, 0, sizeof outrel);
3467 /* h->dynindx may be -1 if the symbol was marked to
3468 become local. */
3469 else if (h != NULL
3470 && h->dynindx != -1
3471 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3472 || !bfd_link_pic (info)
3473 || !SYMBOLIC_BIND (info, h)
3474 || !h->def_regular))
3475 {
3476 BFD_ASSERT (h->dynindx != -1);
3477 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3478 outrel.r_addend = rel->r_addend;
3479 }
3480 else
3481 {
3482 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3483 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3484 {
3485 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3486 0, R_SPARC_RELATIVE);
3487 outrel.r_addend = relocation + rel->r_addend;
3488 }
3489 else
3490 {
3491 long indx;
3492
3493 outrel.r_addend = relocation + rel->r_addend;
3494
3495 if (is_plt)
3496 sec = htab->elf.splt;
3497
3498 if (bfd_is_abs_section (sec))
3499 indx = 0;
3500 else if (sec == NULL || sec->owner == NULL)
3501 {
3502 bfd_set_error (bfd_error_bad_value);
3503 return FALSE;
3504 }
3505 else
3506 {
3507 asection *osec;
3508
3509 /* We are turning this relocation into one
3510 against a section symbol. It would be
3511 proper to subtract the symbol's value,
3512 osec->vma, from the emitted reloc addend,
3513 but ld.so expects buggy relocs. */
3514 osec = sec->output_section;
3515 indx = elf_section_data (osec)->dynindx;
3516
3517 if (indx == 0)
3518 {
3519 osec = htab->elf.text_index_section;
3520 indx = elf_section_data (osec)->dynindx;
3521 }
3522
3523 /* FIXME: we really should be able to link non-pic
3524 shared libraries. */
3525 if (indx == 0)
3526 {
3527 BFD_FAIL ();
3528 _bfd_error_handler
3529 (_("%B: probably compiled without -fPIC?"),
3530 input_bfd);
3531 bfd_set_error (bfd_error_bad_value);
3532 return FALSE;
3533 }
3534 }
3535
3536 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3537 r_type);
3538 }
3539 }
3540
3541 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3542
3543 /* This reloc will be computed at runtime, so there's no
3544 need to do anything now. */
3545 if (! relocate)
3546 continue;
3547 }
3548 break;
3549
3550 case R_SPARC_TLS_GD_HI22:
3551 if (! ABI_64_P (input_bfd)
3552 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3553 {
3554 /* R_SPARC_REV32 used the same reloc number as
3555 R_SPARC_TLS_GD_HI22. */
3556 r_type = R_SPARC_REV32;
3557 break;
3558 }
3559 /* Fall through */
3560
3561 case R_SPARC_TLS_GD_LO10:
3562 case R_SPARC_TLS_IE_HI22:
3563 case R_SPARC_TLS_IE_LO10:
3564 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3565 tls_type = GOT_UNKNOWN;
3566 if (h == NULL && local_got_offsets)
3567 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3568 else if (h != NULL)
3569 {
3570 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3571 if (!bfd_link_pic (info)
3572 && h->dynindx == -1
3573 && tls_type == GOT_TLS_IE)
3574 switch (SPARC_ELF_R_TYPE (rel->r_info))
3575 {
3576 case R_SPARC_TLS_GD_HI22:
3577 case R_SPARC_TLS_IE_HI22:
3578 r_type = R_SPARC_TLS_LE_HIX22;
3579 break;
3580 default:
3581 r_type = R_SPARC_TLS_LE_LOX10;
3582 break;
3583 }
3584 }
3585 if (tls_type == GOT_TLS_IE)
3586 switch (r_type)
3587 {
3588 case R_SPARC_TLS_GD_HI22:
3589 r_type = R_SPARC_TLS_IE_HI22;
3590 break;
3591 case R_SPARC_TLS_GD_LO10:
3592 r_type = R_SPARC_TLS_IE_LO10;
3593 break;
3594 }
3595
3596 if (r_type == R_SPARC_TLS_LE_HIX22)
3597 {
3598 relocation = tpoff (info, relocation);
3599 break;
3600 }
3601 if (r_type == R_SPARC_TLS_LE_LOX10)
3602 {
3603 /* Change add into xor. */
3604 relocation = tpoff (info, relocation);
3605 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3606 contents + rel->r_offset)
3607 | 0x80182000), contents + rel->r_offset);
3608 break;
3609 }
3610
3611 if (h != NULL)
3612 {
3613 off = h->got.offset;
3614 h->got.offset |= 1;
3615 }
3616 else
3617 {
3618 BFD_ASSERT (local_got_offsets != NULL);
3619 off = local_got_offsets[r_symndx];
3620 local_got_offsets[r_symndx] |= 1;
3621 }
3622
3623 r_sparc_tlsldm:
3624 if (htab->elf.sgot == NULL)
3625 abort ();
3626
3627 if ((off & 1) != 0)
3628 off &= ~1;
3629 else
3630 {
3631 Elf_Internal_Rela outrel;
3632 int dr_type, indx;
3633
3634 if (htab->elf.srelgot == NULL)
3635 abort ();
3636
3637 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3638 htab->elf.sgot->contents + off);
3639 outrel.r_offset = (htab->elf.sgot->output_section->vma
3640 + htab->elf.sgot->output_offset + off);
3641 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3642 if (r_type == R_SPARC_TLS_IE_HI22
3643 || r_type == R_SPARC_TLS_IE_LO10)
3644 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3645 else
3646 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3647 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3648 outrel.r_addend = relocation - dtpoff_base (info);
3649 else
3650 outrel.r_addend = 0;
3651 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3652 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3653
3654 if (r_type == R_SPARC_TLS_GD_HI22
3655 || r_type == R_SPARC_TLS_GD_LO10)
3656 {
3657 if (indx == 0)
3658 {
3659 BFD_ASSERT (! unresolved_reloc);
3660 SPARC_ELF_PUT_WORD (htab, output_bfd,
3661 relocation - dtpoff_base (info),
3662 (htab->elf.sgot->contents + off
3663 + SPARC_ELF_WORD_BYTES (htab)));
3664 }
3665 else
3666 {
3667 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3668 (htab->elf.sgot->contents + off
3669 + SPARC_ELF_WORD_BYTES (htab)));
3670 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3671 SPARC_ELF_DTPOFF_RELOC (htab));
3672 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3673 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3674 &outrel);
3675 }
3676 }
3677 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3678 {
3679 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3680 (htab->elf.sgot->contents + off
3681 + SPARC_ELF_WORD_BYTES (htab)));
3682 }
3683 }
3684
3685 if (off >= (bfd_vma) -2)
3686 abort ();
3687
3688 relocation = htab->elf.sgot->output_offset + off - got_base;
3689 unresolved_reloc = FALSE;
3690 howto = _bfd_sparc_elf_howto_table + r_type;
3691 break;
3692
3693 case R_SPARC_TLS_LDM_HI22:
3694 case R_SPARC_TLS_LDM_LO10:
3695 if (! bfd_link_pic (info))
3696 {
3697 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3698 continue;
3699 }
3700 off = htab->tls_ldm_got.offset;
3701 htab->tls_ldm_got.offset |= 1;
3702 goto r_sparc_tlsldm;
3703
3704 case R_SPARC_TLS_LDO_HIX22:
3705 case R_SPARC_TLS_LDO_LOX10:
3706 if (bfd_link_pic (info))
3707 {
3708 relocation -= dtpoff_base (info);
3709 break;
3710 }
3711
3712 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3713 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3714 /* Fall through. */
3715
3716 case R_SPARC_TLS_LE_HIX22:
3717 case R_SPARC_TLS_LE_LOX10:
3718 if (bfd_link_pic (info))
3719 {
3720 Elf_Internal_Rela outrel;
3721 bfd_boolean skip;
3722
3723 BFD_ASSERT (sreloc != NULL);
3724 skip = FALSE;
3725 outrel.r_offset =
3726 _bfd_elf_section_offset (output_bfd, info, input_section,
3727 rel->r_offset);
3728 if (outrel.r_offset == (bfd_vma) -1)
3729 skip = TRUE;
3730 else if (outrel.r_offset == (bfd_vma) -2)
3731 skip = TRUE;
3732 outrel.r_offset += (input_section->output_section->vma
3733 + input_section->output_offset);
3734 if (skip)
3735 memset (&outrel, 0, sizeof outrel);
3736 else
3737 {
3738 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3739 outrel.r_addend = relocation - dtpoff_base (info)
3740 + rel->r_addend;
3741 }
3742
3743 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3744 continue;
3745 }
3746 relocation = tpoff (info, relocation);
3747 break;
3748
3749 case R_SPARC_TLS_LDM_CALL:
3750 if (! bfd_link_pic (info))
3751 {
3752 /* mov %g0, %o0 */
3753 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3754 continue;
3755 }
3756 /* Fall through */
3757
3758 case R_SPARC_TLS_GD_CALL:
3759 tls_type = GOT_UNKNOWN;
3760 if (h == NULL && local_got_offsets)
3761 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3762 else if (h != NULL)
3763 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3764 if (! bfd_link_pic (info)
3765 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3766 {
3767 Elf_Internal_Rela *rel2;
3768 bfd_vma insn;
3769
3770 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3771 {
3772 /* GD -> LE */
3773 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3774 continue;
3775 }
3776
3777 /* GD -> IE */
3778 if (rel + 1 < relend
3779 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3780 && rel[1].r_offset == rel->r_offset + 4
3781 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3782 && (((insn = bfd_get_32 (input_bfd,
3783 contents + rel[1].r_offset))
3784 >> 25) & 0x1f) == 8)
3785 {
3786 /* We have
3787 call __tls_get_addr, %tgd_call(foo)
3788 add %reg1, %reg2, %o0, %tgd_add(foo)
3789 and change it into IE:
3790 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3791 add %g7, %o0, %o0, %tie_add(foo).
3792 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3793 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3794 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3795 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3796 contents + rel->r_offset);
3797 bfd_put_32 (output_bfd, 0x9001c008,
3798 contents + rel->r_offset + 4);
3799 rel++;
3800 continue;
3801 }
3802
3803 /* We cannot just overwrite the delay slot instruction,
3804 as it might be what puts the %o0 argument to
3805 __tls_get_addr into place. So we have to transpose
3806 the delay slot with the add we patch in. */
3807 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3808 bfd_put_32 (output_bfd, insn,
3809 contents + rel->r_offset);
3810 bfd_put_32 (output_bfd, 0x9001c008,
3811 contents + rel->r_offset + 4);
3812
3813 rel2 = rel;
3814 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3815 rel->r_offset + 4))
3816 != NULL)
3817 {
3818 /* If the instruction we moved has a relocation attached to
3819 it, adjust the offset so that it will apply to the correct
3820 instruction. */
3821 rel2->r_offset -= 4;
3822 }
3823 continue;
3824 }
3825
3826 h = (struct elf_link_hash_entry *)
3827 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3828 FALSE, TRUE);
3829 BFD_ASSERT (h != NULL);
3830 r_type = R_SPARC_WPLT30;
3831 howto = _bfd_sparc_elf_howto_table + r_type;
3832 goto r_sparc_wplt30;
3833
3834 case R_SPARC_TLS_GD_ADD:
3835 tls_type = GOT_UNKNOWN;
3836 if (h == NULL && local_got_offsets)
3837 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3838 else if (h != NULL)
3839 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3840 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE)
3841 {
3842 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3843 changed into IE:
3844 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3845 or LE:
3846 add %g7, %reg2, %reg3. */
3847 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3848 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info))
3849 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3850 else
3851 relocation = (insn & ~0x7c000) | 0x1c000;
3852 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3853 }
3854 continue;
3855
3856 case R_SPARC_TLS_LDM_ADD:
3857 if (! bfd_link_pic (info))
3858 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3859 continue;
3860
3861 case R_SPARC_TLS_LDO_ADD:
3862 if (! bfd_link_pic (info))
3863 {
3864 /* Change rs1 into %g7. */
3865 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3866 insn = (insn & ~0x7c000) | 0x1c000;
3867 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3868 }
3869 continue;
3870
3871 case R_SPARC_TLS_IE_LD:
3872 case R_SPARC_TLS_IE_LDX:
3873 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3874 {
3875 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3876 int rs2 = insn & 0x1f;
3877 int rd = (insn >> 25) & 0x1f;
3878
3879 if (rs2 == rd)
3880 relocation = SPARC_NOP;
3881 else
3882 relocation = 0x80100000 | (insn & 0x3e00001f);
3883 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3884 }
3885 continue;
3886
3887 case R_SPARC_TLS_IE_ADD:
3888 /* Totally useless relocation. */
3889 continue;
3890
3891 case R_SPARC_TLS_DTPOFF32:
3892 case R_SPARC_TLS_DTPOFF64:
3893 relocation -= dtpoff_base (info);
3894 break;
3895
3896 default:
3897 break;
3898 }
3899
3900 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3901 because such sections are not SEC_ALLOC and thus ld.so will
3902 not process them. */
3903 if (unresolved_reloc
3904 && !((input_section->flags & SEC_DEBUGGING) != 0
3905 && h->def_dynamic)
3906 && _bfd_elf_section_offset (output_bfd, info, input_section,
3907 rel->r_offset) != (bfd_vma) -1)
3908 _bfd_error_handler
3909 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3910 input_bfd,
3911 input_section,
3912 (long) rel->r_offset,
3913 howto->name,
3914 h->root.root.string);
3915
3916 r = bfd_reloc_continue;
3917 if (r_type == R_SPARC_OLO10)
3918 {
3919 bfd_vma x;
3920
3921 if (! ABI_64_P (output_bfd))
3922 abort ();
3923
3924 relocation += rel->r_addend;
3925 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3926
3927 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3928 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3929 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3930
3931 r = bfd_check_overflow (howto->complain_on_overflow,
3932 howto->bitsize, howto->rightshift,
3933 bfd_arch_bits_per_address (input_bfd),
3934 relocation);
3935 }
3936 else if (r_type == R_SPARC_WDISP16)
3937 {
3938 bfd_vma x;
3939
3940 relocation += rel->r_addend;
3941 relocation -= (input_section->output_section->vma
3942 + input_section->output_offset);
3943 relocation -= rel->r_offset;
3944
3945 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3946 x |= ((((relocation >> 2) & 0xc000) << 6)
3947 | ((relocation >> 2) & 0x3fff));
3948 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3949
3950 r = bfd_check_overflow (howto->complain_on_overflow,
3951 howto->bitsize, howto->rightshift,
3952 bfd_arch_bits_per_address (input_bfd),
3953 relocation);
3954 }
3955 else if (r_type == R_SPARC_WDISP10)
3956 {
3957 bfd_vma x;
3958
3959 relocation += rel->r_addend;
3960 relocation -= (input_section->output_section->vma
3961 + input_section->output_offset);
3962 relocation -= rel->r_offset;
3963
3964 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3965 x |= ((((relocation >> 2) & 0x300) << 11)
3966 | (((relocation >> 2) & 0xff) << 5));
3967 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3968
3969 r = bfd_check_overflow (howto->complain_on_overflow,
3970 howto->bitsize, howto->rightshift,
3971 bfd_arch_bits_per_address (input_bfd),
3972 relocation);
3973 }
3974 else if (r_type == R_SPARC_REV32)
3975 {
3976 bfd_vma x;
3977
3978 relocation = relocation + rel->r_addend;
3979
3980 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3981 x = x + relocation;
3982 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3983 r = bfd_reloc_ok;
3984 }
3985 else if (r_type == R_SPARC_TLS_LDO_HIX22
3986 || r_type == R_SPARC_TLS_LE_HIX22)
3987 {
3988 bfd_vma x;
3989
3990 relocation += rel->r_addend;
3991 if (r_type == R_SPARC_TLS_LE_HIX22)
3992 relocation ^= MINUS_ONE;
3993
3994 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3995 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3996 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3997 r = bfd_reloc_ok;
3998 }
3999 else if (r_type == R_SPARC_TLS_LDO_LOX10
4000 || r_type == R_SPARC_TLS_LE_LOX10)
4001 {
4002 bfd_vma x;
4003
4004 relocation += rel->r_addend;
4005 relocation &= 0x3ff;
4006 if (r_type == R_SPARC_TLS_LE_LOX10)
4007 relocation |= 0x1c00;
4008
4009 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4010 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4011 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4012
4013 r = bfd_reloc_ok;
4014 }
4015 else if (r_type == R_SPARC_HIX22
4016 || r_type == R_SPARC_GOTDATA_HIX22)
4017 {
4018 bfd_vma x;
4019
4020 relocation += rel->r_addend;
4021 if (r_type == R_SPARC_HIX22
4022 || (bfd_signed_vma) relocation < 0)
4023 relocation = relocation ^ MINUS_ONE;
4024
4025 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4026 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4027 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4028
4029 r = bfd_check_overflow (howto->complain_on_overflow,
4030 howto->bitsize, howto->rightshift,
4031 bfd_arch_bits_per_address (input_bfd),
4032 relocation);
4033 }
4034 else if (r_type == R_SPARC_LOX10
4035 || r_type == R_SPARC_GOTDATA_LOX10)
4036 {
4037 bfd_vma x;
4038
4039 relocation += rel->r_addend;
4040 if (r_type == R_SPARC_LOX10
4041 || (bfd_signed_vma) relocation < 0)
4042 relocation = (relocation & 0x3ff) | 0x1c00;
4043 else
4044 relocation = (relocation & 0x3ff);
4045
4046 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4047 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4048 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4049
4050 r = bfd_reloc_ok;
4051 }
4052 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4053 && sec_do_relax (input_section)
4054 && rel->r_offset + 4 < input_section->size)
4055 {
4056 #define G0 0
4057 #define O7 15
4058 #define XCC (2 << 20)
4059 #define COND(x) (((x)&0xf)<<25)
4060 #define CONDA COND(0x8)
4061 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4062 #define INSN_BA (F2(0,2) | CONDA)
4063 #define INSN_OR F3(2, 0x2, 0)
4064 #define INSN_NOP F2(0,4)
4065
4066 bfd_vma x, y;
4067
4068 /* If the instruction is a call with either:
4069 restore
4070 arithmetic instruction with rd == %o7
4071 where rs1 != %o7 and rs2 if it is register != %o7
4072 then we can optimize if the call destination is near
4073 by changing the call into a branch always. */
4074 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4075 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4076 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4077 {
4078 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4079 || ((y & OP3(0x28)) == 0 /* arithmetic */
4080 && (y & RD(~0)) == RD(O7)))
4081 && (y & RS1(~0)) != RS1(O7)
4082 && ((y & F3I(~0))
4083 || (y & RS2(~0)) != RS2(O7)))
4084 {
4085 bfd_vma reloc;
4086
4087 reloc = relocation + rel->r_addend - rel->r_offset;
4088 reloc -= (input_section->output_section->vma
4089 + input_section->output_offset);
4090
4091 /* Ensure the branch fits into simm22. */
4092 if ((reloc & 3) == 0
4093 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4094 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4095 {
4096 reloc >>= 2;
4097
4098 /* Check whether it fits into simm19. */
4099 if (((reloc & 0x3c0000) == 0
4100 || (reloc & 0x3c0000) == 0x3c0000)
4101 && (ABI_64_P (output_bfd)
4102 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4103 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4104 else
4105 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4106 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4107 r = bfd_reloc_ok;
4108 if (rel->r_offset >= 4
4109 && (y & (0xffffffff ^ RS1(~0)))
4110 == (INSN_OR | RD(O7) | RS2(G0)))
4111 {
4112 bfd_vma z;
4113 unsigned int reg;
4114
4115 z = bfd_get_32 (input_bfd,
4116 contents + rel->r_offset - 4);
4117 if ((z & (0xffffffff ^ RD(~0)))
4118 != (INSN_OR | RS1(O7) | RS2(G0)))
4119 break;
4120
4121 /* The sequence was
4122 or %o7, %g0, %rN
4123 call foo
4124 or %rN, %g0, %o7
4125
4126 If call foo was replaced with ba, replace
4127 or %rN, %g0, %o7 with nop. */
4128
4129 reg = (y & RS1(~0)) >> 14;
4130 if (reg != ((z & RD(~0)) >> 25)
4131 || reg == G0 || reg == O7)
4132 break;
4133
4134 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4135 contents + rel->r_offset + 4);
4136 }
4137
4138 }
4139 }
4140 }
4141 }
4142
4143 if (r == bfd_reloc_continue)
4144 {
4145 do_relocation:
4146 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4147 contents, rel->r_offset,
4148 relocation, rel->r_addend);
4149 }
4150 if (r != bfd_reloc_ok)
4151 {
4152 switch (r)
4153 {
4154 default:
4155 case bfd_reloc_outofrange:
4156 abort ();
4157 case bfd_reloc_overflow:
4158 {
4159 const char *name;
4160
4161 /* The Solaris native linker silently disregards overflows.
4162 We don't, but this breaks stabs debugging info, whose
4163 relocations are only 32-bits wide. Ignore overflows in
4164 this case and also for discarded entries. */
4165 if ((r_type == R_SPARC_32
4166 || r_type == R_SPARC_UA32
4167 || r_type == R_SPARC_DISP32)
4168 && (((input_section->flags & SEC_DEBUGGING) != 0
4169 && strcmp (bfd_section_name (input_bfd,
4170 input_section),
4171 ".stab") == 0)
4172 || _bfd_elf_section_offset (output_bfd, info,
4173 input_section,
4174 rel->r_offset)
4175 == (bfd_vma)-1))
4176 break;
4177
4178 if (h != NULL)
4179 {
4180 /* Assume this is a call protected by other code that
4181 detect the symbol is undefined. If this is the case,
4182 we can safely ignore the overflow. If not, the
4183 program is hosed anyway, and a little warning isn't
4184 going to help. */
4185 if (h->root.type == bfd_link_hash_undefweak
4186 && howto->pc_relative)
4187 break;
4188
4189 name = NULL;
4190 }
4191 else
4192 {
4193 name = bfd_elf_string_from_elf_section (input_bfd,
4194 symtab_hdr->sh_link,
4195 sym->st_name);
4196 if (name == NULL)
4197 return FALSE;
4198 if (*name == '\0')
4199 name = bfd_section_name (input_bfd, sec);
4200 }
4201 (*info->callbacks->reloc_overflow)
4202 (info, (h ? &h->root : NULL), name, howto->name,
4203 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4204 }
4205 break;
4206 }
4207 }
4208 }
4209
4210 return TRUE;
4211 }
4212
4213 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4214 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4215 is the offset of the associated .got.plt entry from
4216 _GLOBAL_OFFSET_TABLE_. */
4217
4218 static void
4219 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4220 bfd_vma plt_offset, bfd_vma plt_index,
4221 bfd_vma got_offset)
4222 {
4223 bfd_vma got_base;
4224 const bfd_vma *plt_entry;
4225 struct _bfd_sparc_elf_link_hash_table *htab;
4226 bfd_byte *loc;
4227 Elf_Internal_Rela rela;
4228
4229 htab = _bfd_sparc_elf_hash_table (info);
4230 BFD_ASSERT (htab != NULL);
4231
4232 if (bfd_link_pic (info))
4233 {
4234 plt_entry = sparc_vxworks_shared_plt_entry;
4235 got_base = 0;
4236 }
4237 else
4238 {
4239 plt_entry = sparc_vxworks_exec_plt_entry;
4240 got_base = (htab->elf.hgot->root.u.def.value
4241 + htab->elf.hgot->root.u.def.section->output_offset
4242 + htab->elf.hgot->root.u.def.section->output_section->vma);
4243 }
4244
4245 /* Fill in the entry in the procedure linkage table. */
4246 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4247 htab->elf.splt->contents + plt_offset);
4248 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4249 htab->elf.splt->contents + plt_offset + 4);
4250 bfd_put_32 (output_bfd, plt_entry[2],
4251 htab->elf.splt->contents + plt_offset + 8);
4252 bfd_put_32 (output_bfd, plt_entry[3],
4253 htab->elf.splt->contents + plt_offset + 12);
4254 bfd_put_32 (output_bfd, plt_entry[4],
4255 htab->elf.splt->contents + plt_offset + 16);
4256 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4257 htab->elf.splt->contents + plt_offset + 20);
4258 /* PC-relative displacement for a branch to the start of
4259 the PLT section. */
4260 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4261 & 0x003fffff),
4262 htab->elf.splt->contents + plt_offset + 24);
4263 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4264 htab->elf.splt->contents + plt_offset + 28);
4265
4266 /* Fill in the .got.plt entry, pointing initially at the
4267 second half of the PLT entry. */
4268 BFD_ASSERT (htab->elf.sgotplt != NULL);
4269 bfd_put_32 (output_bfd,
4270 htab->elf.splt->output_section->vma
4271 + htab->elf.splt->output_offset
4272 + plt_offset + 20,
4273 htab->elf.sgotplt->contents + got_offset);
4274
4275 /* Add relocations to .rela.plt.unloaded. */
4276 if (!bfd_link_pic (info))
4277 {
4278 loc = (htab->srelplt2->contents
4279 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4280
4281 /* Relocate the initial sethi. */
4282 rela.r_offset = (htab->elf.splt->output_section->vma
4283 + htab->elf.splt->output_offset
4284 + plt_offset);
4285 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4286 rela.r_addend = got_offset;
4287 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4288 loc += sizeof (Elf32_External_Rela);
4289
4290 /* Likewise the following or. */
4291 rela.r_offset += 4;
4292 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4293 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4294 loc += sizeof (Elf32_External_Rela);
4295
4296 /* Relocate the .got.plt entry. */
4297 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4298 + htab->elf.sgotplt->output_offset
4299 + got_offset);
4300 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4301 rela.r_addend = plt_offset + 20;
4302 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4303 }
4304 }
4305
4306 /* Finish up dynamic symbol handling. We set the contents of various
4307 dynamic sections here. */
4308
4309 bfd_boolean
4310 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4311 struct bfd_link_info *info,
4312 struct elf_link_hash_entry *h,
4313 Elf_Internal_Sym *sym)
4314 {
4315 struct _bfd_sparc_elf_link_hash_table *htab;
4316 const struct elf_backend_data *bed;
4317
4318 htab = _bfd_sparc_elf_hash_table (info);
4319 BFD_ASSERT (htab != NULL);
4320 bed = get_elf_backend_data (output_bfd);
4321
4322 if (h->plt.offset != (bfd_vma) -1)
4323 {
4324 asection *splt;
4325 asection *srela;
4326 Elf_Internal_Rela rela;
4327 bfd_byte *loc;
4328 bfd_vma r_offset, got_offset;
4329 int rela_index;
4330
4331 /* When building a static executable, use .iplt and
4332 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4333 if (htab->elf.splt != NULL)
4334 {
4335 splt = htab->elf.splt;
4336 srela = htab->elf.srelplt;
4337 }
4338 else
4339 {
4340 splt = htab->elf.iplt;
4341 srela = htab->elf.irelplt;
4342 }
4343
4344 if (splt == NULL || srela == NULL)
4345 abort ();
4346
4347 /* Fill in the entry in the .rela.plt section. */
4348 if (htab->is_vxworks)
4349 {
4350 /* Work out the index of this PLT entry. */
4351 rela_index = ((h->plt.offset - htab->plt_header_size)
4352 / htab->plt_entry_size);
4353
4354 /* Calculate the offset of the associated .got.plt entry.
4355 The first three entries are reserved. */
4356 got_offset = (rela_index + 3) * 4;
4357
4358 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4359 rela_index, got_offset);
4360
4361
4362 /* On VxWorks, the relocation points to the .got.plt entry,
4363 not the .plt entry. */
4364 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4365 + htab->elf.sgotplt->output_offset
4366 + got_offset);
4367 rela.r_addend = 0;
4368 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4369 R_SPARC_JMP_SLOT);
4370 }
4371 else
4372 {
4373 bfd_boolean ifunc = FALSE;
4374
4375 /* Fill in the entry in the procedure linkage table. */
4376 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4377 h->plt.offset, splt->size,
4378 &r_offset);
4379
4380 if (h == NULL
4381 || h->dynindx == -1
4382 || ((bfd_link_executable (info)
4383 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4384 && h->def_regular
4385 && h->type == STT_GNU_IFUNC))
4386 {
4387 ifunc = TRUE;
4388 BFD_ASSERT (h == NULL
4389 || (h->type == STT_GNU_IFUNC
4390 && h->def_regular
4391 && (h->root.type == bfd_link_hash_defined
4392 || h->root.type == bfd_link_hash_defweak)));
4393 }
4394
4395 rela.r_offset = r_offset
4396 + (splt->output_section->vma + splt->output_offset);
4397 if (ABI_64_P (output_bfd)
4398 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4399 {
4400 if (ifunc)
4401 {
4402 rela.r_addend = (h->root.u.def.section->output_section->vma
4403 + h->root.u.def.section->output_offset
4404 + h->root.u.def.value);
4405 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4406 R_SPARC_IRELATIVE);
4407 }
4408 else
4409 {
4410 rela.r_addend = (-(h->plt.offset + 4)
4411 - splt->output_section->vma
4412 - splt->output_offset);
4413 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4414 R_SPARC_JMP_SLOT);
4415 }
4416 }
4417 else
4418 {
4419 if (ifunc)
4420 {
4421 rela.r_addend = (h->root.u.def.section->output_section->vma
4422 + h->root.u.def.section->output_offset
4423 + h->root.u.def.value);
4424 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4425 R_SPARC_JMP_IREL);
4426 }
4427 else
4428 {
4429 rela.r_addend = 0;
4430 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4431 R_SPARC_JMP_SLOT);
4432 }
4433 }
4434 }
4435
4436 /* Adjust for the first 4 reserved elements in the .plt section
4437 when setting the offset in the .rela.plt section.
4438 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4439 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4440
4441 loc = srela->contents;
4442 loc += rela_index * bed->s->sizeof_rela;
4443 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4444
4445 if (!h->def_regular)
4446 {
4447 /* Mark the symbol as undefined, rather than as defined in
4448 the .plt section. Leave the value alone. */
4449 sym->st_shndx = SHN_UNDEF;
4450 /* If the symbol is weak, we do need to clear the value.
4451 Otherwise, the PLT entry would provide a definition for
4452 the symbol even if the symbol wasn't defined anywhere,
4453 and so the symbol would never be NULL. */
4454 if (!h->ref_regular_nonweak)
4455 sym->st_value = 0;
4456 }
4457 }
4458
4459 if (h->got.offset != (bfd_vma) -1
4460 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4461 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4462 {
4463 asection *sgot;
4464 asection *srela;
4465 Elf_Internal_Rela rela;
4466
4467 /* This symbol has an entry in the GOT. Set it up. */
4468
4469 sgot = htab->elf.sgot;
4470 srela = htab->elf.srelgot;
4471 BFD_ASSERT (sgot != NULL && srela != NULL);
4472
4473 rela.r_offset = (sgot->output_section->vma
4474 + sgot->output_offset
4475 + (h->got.offset &~ (bfd_vma) 1));
4476
4477 /* If this is a -Bsymbolic link, and the symbol is defined
4478 locally, we just want to emit a RELATIVE reloc. Likewise if
4479 the symbol was forced to be local because of a version file.
4480 The entry in the global offset table will already have been
4481 initialized in the relocate_section function. */
4482 if (! bfd_link_pic (info)
4483 && h->type == STT_GNU_IFUNC
4484 && h->def_regular)
4485 {
4486 asection *plt;
4487
4488 /* We load the GOT entry with the PLT entry. */
4489 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4490 SPARC_ELF_PUT_WORD (htab, output_bfd,
4491 (plt->output_section->vma
4492 + plt->output_offset + h->plt.offset),
4493 htab->elf.sgot->contents
4494 + (h->got.offset & ~(bfd_vma) 1));
4495 return TRUE;
4496 }
4497 else if (bfd_link_pic (info)
4498 && SYMBOL_REFERENCES_LOCAL (info, h))
4499 {
4500 asection *sec = h->root.u.def.section;
4501 if (h->type == STT_GNU_IFUNC)
4502 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4503 else
4504 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4505 rela.r_addend = (h->root.u.def.value
4506 + sec->output_section->vma
4507 + sec->output_offset);
4508 }
4509 else
4510 {
4511 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4512 rela.r_addend = 0;
4513 }
4514
4515 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4516 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4517 sparc_elf_append_rela (output_bfd, srela, &rela);
4518 }
4519
4520 if (h->needs_copy)
4521 {
4522 asection *s;
4523 Elf_Internal_Rela rela;
4524
4525 /* This symbols needs a copy reloc. Set it up. */
4526 BFD_ASSERT (h->dynindx != -1);
4527
4528 s = bfd_get_linker_section (h->root.u.def.section->owner,
4529 ".rela.bss");
4530 BFD_ASSERT (s != NULL);
4531
4532 rela.r_offset = (h->root.u.def.value
4533 + h->root.u.def.section->output_section->vma
4534 + h->root.u.def.section->output_offset);
4535 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4536 rela.r_addend = 0;
4537 sparc_elf_append_rela (output_bfd, s, &rela);
4538 }
4539
4540 /* Mark some specially defined symbols as absolute. On VxWorks,
4541 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4542 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4543 if (sym != NULL
4544 && (h == htab->elf.hdynamic
4545 || (!htab->is_vxworks
4546 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4547 sym->st_shndx = SHN_ABS;
4548
4549 return TRUE;
4550 }
4551
4552 /* Finish up the dynamic sections. */
4553
4554 static bfd_boolean
4555 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4556 bfd *dynobj, asection *sdyn,
4557 asection *splt ATTRIBUTE_UNUSED)
4558 {
4559 struct _bfd_sparc_elf_link_hash_table *htab;
4560 const struct elf_backend_data *bed;
4561 bfd_byte *dyncon, *dynconend;
4562 size_t dynsize;
4563 int stt_regidx = -1;
4564 bfd_boolean abi_64_p;
4565
4566 htab = _bfd_sparc_elf_hash_table (info);
4567 BFD_ASSERT (htab != NULL);
4568 bed = get_elf_backend_data (output_bfd);
4569 dynsize = bed->s->sizeof_dyn;
4570 dynconend = sdyn->contents + sdyn->size;
4571 abi_64_p = ABI_64_P (output_bfd);
4572 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4573 {
4574 Elf_Internal_Dyn dyn;
4575 const char *name;
4576 bfd_boolean size;
4577
4578 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4579
4580 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4581 {
4582 /* On VxWorks, DT_RELASZ should not include the relocations
4583 in .rela.plt. */
4584 if (htab->elf.srelplt)
4585 {
4586 dyn.d_un.d_val -= htab->elf.srelplt->size;
4587 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4588 }
4589 }
4590 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4591 {
4592 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4593 not to the start of the PLT. */
4594 if (htab->elf.sgotplt)
4595 {
4596 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4597 + htab->elf.sgotplt->output_offset);
4598 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4599 }
4600 }
4601 else if (htab->is_vxworks
4602 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4603 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4604 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4605 {
4606 if (stt_regidx == -1)
4607 {
4608 stt_regidx =
4609 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4610 if (stt_regidx == -1)
4611 return FALSE;
4612 }
4613 dyn.d_un.d_val = stt_regidx++;
4614 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4615 }
4616 else
4617 {
4618 switch (dyn.d_tag)
4619 {
4620 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4621 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4622 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4623 default: name = NULL; size = FALSE; break;
4624 }
4625
4626 if (name != NULL)
4627 {
4628 asection *s;
4629
4630 s = bfd_get_linker_section (dynobj, name);
4631 if (s == NULL)
4632 dyn.d_un.d_val = 0;
4633 else
4634 {
4635 if (! size)
4636 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4637 else
4638 dyn.d_un.d_val = s->size;
4639 }
4640 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4641 }
4642 }
4643 }
4644 return TRUE;
4645 }
4646
4647 /* Install the first PLT entry in a VxWorks executable and make sure that
4648 .rela.plt.unloaded relocations have the correct symbol indexes. */
4649
4650 static void
4651 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4652 {
4653 struct _bfd_sparc_elf_link_hash_table *htab;
4654 Elf_Internal_Rela rela;
4655 bfd_vma got_base;
4656 bfd_byte *loc;
4657
4658 htab = _bfd_sparc_elf_hash_table (info);
4659 BFD_ASSERT (htab != NULL);
4660
4661 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4662 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4663 + htab->elf.hgot->root.u.def.section->output_offset
4664 + htab->elf.hgot->root.u.def.value);
4665
4666 /* Install the initial PLT entry. */
4667 bfd_put_32 (output_bfd,
4668 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4669 htab->elf.splt->contents);
4670 bfd_put_32 (output_bfd,
4671 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4672 htab->elf.splt->contents + 4);
4673 bfd_put_32 (output_bfd,
4674 sparc_vxworks_exec_plt0_entry[2],
4675 htab->elf.splt->contents + 8);
4676 bfd_put_32 (output_bfd,
4677 sparc_vxworks_exec_plt0_entry[3],
4678 htab->elf.splt->contents + 12);
4679 bfd_put_32 (output_bfd,
4680 sparc_vxworks_exec_plt0_entry[4],
4681 htab->elf.splt->contents + 16);
4682
4683 loc = htab->srelplt2->contents;
4684
4685 /* Add an unloaded relocation for the initial entry's "sethi". */
4686 rela.r_offset = (htab->elf.splt->output_section->vma
4687 + htab->elf.splt->output_offset);
4688 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4689 rela.r_addend = 8;
4690 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4691 loc += sizeof (Elf32_External_Rela);
4692
4693 /* Likewise the following "or". */
4694 rela.r_offset += 4;
4695 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4696 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4697 loc += sizeof (Elf32_External_Rela);
4698
4699 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4700 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4701 in which symbols were output. */
4702 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4703 {
4704 Elf_Internal_Rela rel;
4705
4706 /* The entry's initial "sethi" (against _G_O_T_). */
4707 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4708 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4709 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4710 loc += sizeof (Elf32_External_Rela);
4711
4712 /* The following "or" (also against _G_O_T_). */
4713 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4714 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4715 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4716 loc += sizeof (Elf32_External_Rela);
4717
4718 /* The .got.plt entry (against _P_L_T_). */
4719 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4720 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4721 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4722 loc += sizeof (Elf32_External_Rela);
4723 }
4724 }
4725
4726 /* Install the first PLT entry in a VxWorks shared object. */
4727
4728 static void
4729 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4730 {
4731 struct _bfd_sparc_elf_link_hash_table *htab;
4732 unsigned int i;
4733
4734 htab = _bfd_sparc_elf_hash_table (info);
4735 BFD_ASSERT (htab != NULL);
4736
4737 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4738 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4739 htab->elf.splt->contents + i * 4);
4740 }
4741
4742 /* Finish up local dynamic symbol handling. We set the contents of
4743 various dynamic sections here. */
4744
4745 static bfd_boolean
4746 finish_local_dynamic_symbol (void **slot, void *inf)
4747 {
4748 struct elf_link_hash_entry *h
4749 = (struct elf_link_hash_entry *) *slot;
4750 struct bfd_link_info *info
4751 = (struct bfd_link_info *) inf;
4752
4753 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4754 h, NULL);
4755 }
4756
4757 bfd_boolean
4758 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4759 {
4760 bfd *dynobj;
4761 asection *sdyn;
4762 struct _bfd_sparc_elf_link_hash_table *htab;
4763
4764 htab = _bfd_sparc_elf_hash_table (info);
4765 BFD_ASSERT (htab != NULL);
4766 dynobj = htab->elf.dynobj;
4767
4768 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4769
4770 if (elf_hash_table (info)->dynamic_sections_created)
4771 {
4772 asection *splt;
4773
4774 splt = htab->elf.splt;
4775 BFD_ASSERT (splt != NULL && sdyn != NULL);
4776
4777 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4778 return FALSE;
4779
4780 /* Initialize the contents of the .plt section. */
4781 if (splt->size > 0)
4782 {
4783 if (htab->is_vxworks)
4784 {
4785 if (bfd_link_pic (info))
4786 sparc_vxworks_finish_shared_plt (output_bfd, info);
4787 else
4788 sparc_vxworks_finish_exec_plt (output_bfd, info);
4789 }
4790 else
4791 {
4792 memset (splt->contents, 0, htab->plt_header_size);
4793 if (!ABI_64_P (output_bfd))
4794 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4795 splt->contents + splt->size - 4);
4796 }
4797 }
4798
4799 if (elf_section_data (splt->output_section) != NULL)
4800 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4801 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4802 ? 0 : htab->plt_entry_size);
4803 }
4804
4805 /* Set the first entry in the global offset table to the address of
4806 the dynamic section. */
4807 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4808 {
4809 bfd_vma val = (sdyn ?
4810 sdyn->output_section->vma + sdyn->output_offset :
4811 0);
4812
4813 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4814 }
4815
4816 if (htab->elf.sgot)
4817 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4818 SPARC_ELF_WORD_BYTES (htab);
4819
4820 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4821 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4822
4823 return TRUE;
4824 }
4825
4826 \f
4827 /* Set the right machine number for a SPARC ELF file. */
4828
4829 bfd_boolean
4830 _bfd_sparc_elf_object_p (bfd *abfd)
4831 {
4832 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4833 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4834 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4835
4836 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4837 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4838 | ELF_SPARC_HWCAP_VIS3
4839 | ELF_SPARC_HWCAP_HPC);
4840 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4841 | ELF_SPARC_HWCAP_DES
4842 | ELF_SPARC_HWCAP_KASUMI
4843 | ELF_SPARC_HWCAP_CAMELLIA
4844 | ELF_SPARC_HWCAP_MD5
4845 | ELF_SPARC_HWCAP_SHA1
4846 | ELF_SPARC_HWCAP_SHA256
4847 | ELF_SPARC_HWCAP_SHA512
4848 | ELF_SPARC_HWCAP_MPMUL
4849 | ELF_SPARC_HWCAP_MONT
4850 | ELF_SPARC_HWCAP_CRC32C
4851 | ELF_SPARC_HWCAP_CBCOND
4852 | ELF_SPARC_HWCAP_PAUSE);
4853 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4854 | ELF_SPARC_HWCAP_IMA);
4855 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4856 | ELF_SPARC_HWCAP2_MWAIT
4857 | ELF_SPARC_HWCAP2_XMPMUL
4858 | ELF_SPARC_HWCAP2_XMONT);
4859
4860 if (ABI_64_P (abfd))
4861 {
4862 unsigned long mach = bfd_mach_sparc_v9;
4863
4864 if (hwcaps2->i & v9m_hwcaps2_mask)
4865 mach = bfd_mach_sparc_v9m;
4866 else if (hwcaps->i & v9v_hwcaps_mask)
4867 mach = bfd_mach_sparc_v9v;
4868 else if (hwcaps->i & v9e_hwcaps_mask)
4869 mach = bfd_mach_sparc_v9e;
4870 else if (hwcaps->i & v9d_hwcaps_mask)
4871 mach = bfd_mach_sparc_v9d;
4872 else if (hwcaps->i & v9c_hwcaps_mask)
4873 mach = bfd_mach_sparc_v9c;
4874 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4875 mach = bfd_mach_sparc_v9b;
4876 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4877 mach = bfd_mach_sparc_v9a;
4878 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4879 }
4880 else
4881 {
4882 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4883 {
4884 if (hwcaps2->i & v9m_hwcaps2_mask)
4885 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4886 bfd_mach_sparc_v8plusm);
4887 else if (hwcaps->i & v9v_hwcaps_mask)
4888 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4889 bfd_mach_sparc_v8plusv);
4890 else if (hwcaps->i & v9e_hwcaps_mask)
4891 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4892 bfd_mach_sparc_v8pluse);
4893 else if (hwcaps->i & v9d_hwcaps_mask)
4894 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4895 bfd_mach_sparc_v8plusd);
4896 else if (hwcaps->i & v9c_hwcaps_mask)
4897 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4898 bfd_mach_sparc_v8plusc);
4899 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4900 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4901 bfd_mach_sparc_v8plusb);
4902 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4903 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4904 bfd_mach_sparc_v8plusa);
4905 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4906 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4907 bfd_mach_sparc_v8plus);
4908 else
4909 return FALSE;
4910 }
4911 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4912 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4913 bfd_mach_sparc_sparclite_le);
4914 else
4915 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4916 }
4917 }
4918
4919 /* Return address for Ith PLT stub in section PLT, for relocation REL
4920 or (bfd_vma) -1 if it should not be included. */
4921
4922 bfd_vma
4923 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4924 {
4925 if (ABI_64_P (plt->owner))
4926 {
4927 bfd_vma j;
4928
4929 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4930 if (i < PLT64_LARGE_THRESHOLD)
4931 return plt->vma + i * PLT64_ENTRY_SIZE;
4932
4933 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4934 i -= j;
4935 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4936 }
4937 else
4938 return rel->address;
4939 }
4940
4941 /* Merge backend specific data from an object file to the output
4942 object file when linking. */
4943
4944 bfd_boolean
4945 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4946 {
4947 bfd *obfd = info->output_bfd;
4948 obj_attribute *in_attr, *in_attrs;
4949 obj_attribute *out_attr, *out_attrs;
4950
4951 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4952 {
4953 /* This is the first object. Copy the attributes. */
4954 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4955
4956 /* Use the Tag_null value to indicate the attributes have been
4957 initialized. */
4958 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4959
4960 return TRUE;
4961 }
4962
4963 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4964 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4965
4966 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4967 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4968
4969 out_attr->i |= in_attr->i;
4970 out_attr->type = 1;
4971
4972 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4973 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4974
4975 out_attr->i |= in_attr->i;
4976 out_attr->type = 1;
4977
4978 /* Merge Tag_compatibility attributes and any common GNU ones. */
4979 _bfd_elf_merge_object_attributes (ibfd, info);
4980
4981 return TRUE;
4982 }
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