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Revert "bfd: allow negative offsets to _GLOBAL_OFFSET_TABLE_ in elf64 SPARC"
[deliverable/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 /* xgettext:c-format */
1415 _bfd_error_handler (_("%B: bad symbol index: %d"), abfd, r_symndx);
1416 return FALSE;
1417 }
1418
1419 isym = NULL;
1420 if (r_symndx < symtab_hdr->sh_info)
1421 {
1422 /* A local symbol. */
1423 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1424 abfd, r_symndx);
1425 if (isym == NULL)
1426 return FALSE;
1427
1428 /* Check relocation against local STT_GNU_IFUNC symbol. */
1429 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1430 {
1431 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1432 TRUE);
1433 if (h == NULL)
1434 return FALSE;
1435
1436 /* Fake a STT_GNU_IFUNC symbol. */
1437 h->type = STT_GNU_IFUNC;
1438 h->def_regular = 1;
1439 h->ref_regular = 1;
1440 h->forced_local = 1;
1441 h->root.type = bfd_link_hash_defined;
1442 }
1443 else
1444 h = NULL;
1445 }
1446 else
1447 {
1448 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1449 while (h->root.type == bfd_link_hash_indirect
1450 || h->root.type == bfd_link_hash_warning)
1451 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1452
1453 /* PR15323, ref flags aren't set for references in the same
1454 object. */
1455 h->root.non_ir_ref = 1;
1456 }
1457
1458 if (h && h->type == STT_GNU_IFUNC)
1459 {
1460 if (h->def_regular)
1461 {
1462 h->ref_regular = 1;
1463 h->plt.refcount += 1;
1464 }
1465 }
1466
1467 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1468 with R_SPARC_TLS_GD_HI22. */
1469 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1470 switch (r_type)
1471 {
1472 case R_SPARC_TLS_GD_HI22:
1473 {
1474 const Elf_Internal_Rela *relt;
1475
1476 for (relt = rel + 1; relt < rel_end; relt++)
1477 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1478 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1479 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1480 break;
1481 checked_tlsgd = TRUE;
1482 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1483 }
1484 break;
1485 case R_SPARC_TLS_GD_LO10:
1486 case R_SPARC_TLS_GD_ADD:
1487 case R_SPARC_TLS_GD_CALL:
1488 checked_tlsgd = TRUE;
1489 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1490 break;
1491 }
1492
1493 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1494 switch (r_type)
1495 {
1496 case R_SPARC_TLS_LDM_HI22:
1497 case R_SPARC_TLS_LDM_LO10:
1498 htab->tls_ldm_got.refcount += 1;
1499 break;
1500
1501 case R_SPARC_TLS_LE_HIX22:
1502 case R_SPARC_TLS_LE_LOX10:
1503 if (bfd_link_pic (info))
1504 goto r_sparc_plt32;
1505 break;
1506
1507 case R_SPARC_TLS_IE_HI22:
1508 case R_SPARC_TLS_IE_LO10:
1509 if (bfd_link_pic (info))
1510 info->flags |= DF_STATIC_TLS;
1511 /* Fall through */
1512
1513 case R_SPARC_GOT10:
1514 case R_SPARC_GOT13:
1515 case R_SPARC_GOT22:
1516 case R_SPARC_GOTDATA_HIX22:
1517 case R_SPARC_GOTDATA_LOX10:
1518 case R_SPARC_GOTDATA_OP_HIX22:
1519 case R_SPARC_GOTDATA_OP_LOX10:
1520 case R_SPARC_TLS_GD_HI22:
1521 case R_SPARC_TLS_GD_LO10:
1522 /* This symbol requires a global offset table entry. */
1523 {
1524 int tls_type, old_tls_type;
1525
1526 switch (r_type)
1527 {
1528 default:
1529 case R_SPARC_GOT10:
1530 case R_SPARC_GOT13:
1531 case R_SPARC_GOT22:
1532 case R_SPARC_GOTDATA_OP_HIX22:
1533 case R_SPARC_GOTDATA_OP_LOX10:
1534 tls_type = GOT_NORMAL;
1535 break;
1536 case R_SPARC_TLS_GD_HI22:
1537 case R_SPARC_TLS_GD_LO10:
1538 tls_type = GOT_TLS_GD;
1539 break;
1540 case R_SPARC_TLS_IE_HI22:
1541 case R_SPARC_TLS_IE_LO10:
1542 tls_type = GOT_TLS_IE;
1543 break;
1544 }
1545
1546 if (h != NULL)
1547 {
1548 h->got.refcount += 1;
1549 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1550 }
1551 else
1552 {
1553 bfd_signed_vma *local_got_refcounts;
1554
1555 /* This is a global offset table entry for a local symbol. */
1556 local_got_refcounts = elf_local_got_refcounts (abfd);
1557 if (local_got_refcounts == NULL)
1558 {
1559 bfd_size_type size;
1560
1561 size = symtab_hdr->sh_info;
1562 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1563 local_got_refcounts = ((bfd_signed_vma *)
1564 bfd_zalloc (abfd, size));
1565 if (local_got_refcounts == NULL)
1566 return FALSE;
1567 elf_local_got_refcounts (abfd) = local_got_refcounts;
1568 _bfd_sparc_elf_local_got_tls_type (abfd)
1569 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1570 }
1571 switch (r_type)
1572 {
1573 case R_SPARC_GOTDATA_OP_HIX22:
1574 case R_SPARC_GOTDATA_OP_LOX10:
1575 break;
1576
1577 default:
1578 local_got_refcounts[r_symndx] += 1;
1579 break;
1580 }
1581 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1582 }
1583
1584 /* If a TLS symbol is accessed using IE at least once,
1585 there is no point to use dynamic model for it. */
1586 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1587 && (old_tls_type != GOT_TLS_GD
1588 || tls_type != GOT_TLS_IE))
1589 {
1590 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1591 tls_type = old_tls_type;
1592 else
1593 {
1594 _bfd_error_handler
1595 /* xgettext:c-format */
1596 (_("%B: `%s' accessed both as normal and thread local symbol"),
1597 abfd, h ? h->root.root.string : "<local>");
1598 return FALSE;
1599 }
1600 }
1601
1602 if (old_tls_type != tls_type)
1603 {
1604 if (h != NULL)
1605 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1606 else
1607 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1608 }
1609 }
1610
1611 if (htab->elf.sgot == NULL)
1612 {
1613 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1614 return FALSE;
1615 }
1616 break;
1617
1618 case R_SPARC_TLS_GD_CALL:
1619 case R_SPARC_TLS_LDM_CALL:
1620 if (bfd_link_pic (info))
1621 {
1622 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1623 __tls_get_addr. */
1624 struct bfd_link_hash_entry *bh = NULL;
1625 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1626 "__tls_get_addr", 0,
1627 bfd_und_section_ptr, 0,
1628 NULL, FALSE, FALSE,
1629 &bh))
1630 return FALSE;
1631 h = (struct elf_link_hash_entry *) bh;
1632 }
1633 else
1634 break;
1635 /* Fall through */
1636
1637 case R_SPARC_PLT32:
1638 case R_SPARC_WPLT30:
1639 case R_SPARC_HIPLT22:
1640 case R_SPARC_LOPLT10:
1641 case R_SPARC_PCPLT32:
1642 case R_SPARC_PCPLT22:
1643 case R_SPARC_PCPLT10:
1644 case R_SPARC_PLT64:
1645 /* This symbol requires a procedure linkage table entry. We
1646 actually build the entry in adjust_dynamic_symbol,
1647 because this might be a case of linking PIC code without
1648 linking in any dynamic objects, in which case we don't
1649 need to generate a procedure linkage table after all. */
1650
1651 if (h == NULL)
1652 {
1653 if (! ABI_64_P (abfd))
1654 {
1655 /* The Solaris native assembler will generate a WPLT30
1656 reloc for a local symbol if you assemble a call from
1657 one section to another when using -K pic. We treat
1658 it as WDISP30. */
1659 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1660 goto r_sparc_plt32;
1661 break;
1662 }
1663 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1664 else if (r_type == R_SPARC_WPLT30)
1665 break;
1666
1667 /* It does not make sense to have a procedure linkage
1668 table entry for a local symbol. */
1669 bfd_set_error (bfd_error_bad_value);
1670 return FALSE;
1671 }
1672
1673 h->needs_plt = 1;
1674
1675 {
1676 int this_r_type;
1677
1678 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1679 if (this_r_type == R_SPARC_PLT32
1680 || this_r_type == R_SPARC_PLT64)
1681 goto r_sparc_plt32;
1682 }
1683 h->plt.refcount += 1;
1684 break;
1685
1686 case R_SPARC_PC10:
1687 case R_SPARC_PC22:
1688 case R_SPARC_PC_HH22:
1689 case R_SPARC_PC_HM10:
1690 case R_SPARC_PC_LM22:
1691 if (h != NULL)
1692 h->non_got_ref = 1;
1693
1694 if (h != NULL
1695 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1696 break;
1697 /* Fall through. */
1698
1699 case R_SPARC_DISP8:
1700 case R_SPARC_DISP16:
1701 case R_SPARC_DISP32:
1702 case R_SPARC_DISP64:
1703 case R_SPARC_WDISP30:
1704 case R_SPARC_WDISP22:
1705 case R_SPARC_WDISP19:
1706 case R_SPARC_WDISP16:
1707 case R_SPARC_WDISP10:
1708 case R_SPARC_8:
1709 case R_SPARC_16:
1710 case R_SPARC_32:
1711 case R_SPARC_HI22:
1712 case R_SPARC_22:
1713 case R_SPARC_13:
1714 case R_SPARC_LO10:
1715 case R_SPARC_UA16:
1716 case R_SPARC_UA32:
1717 case R_SPARC_10:
1718 case R_SPARC_11:
1719 case R_SPARC_64:
1720 case R_SPARC_OLO10:
1721 case R_SPARC_HH22:
1722 case R_SPARC_HM10:
1723 case R_SPARC_LM22:
1724 case R_SPARC_7:
1725 case R_SPARC_5:
1726 case R_SPARC_6:
1727 case R_SPARC_HIX22:
1728 case R_SPARC_LOX10:
1729 case R_SPARC_H44:
1730 case R_SPARC_M44:
1731 case R_SPARC_L44:
1732 case R_SPARC_H34:
1733 case R_SPARC_UA64:
1734 if (h != NULL)
1735 h->non_got_ref = 1;
1736
1737 r_sparc_plt32:
1738 if (h != NULL && !bfd_link_pic (info))
1739 {
1740 /* We may need a .plt entry if the function this reloc
1741 refers to is in a shared lib. */
1742 h->plt.refcount += 1;
1743 }
1744
1745 /* If we are creating a shared library, and this is a reloc
1746 against a global symbol, or a non PC relative reloc
1747 against a local symbol, then we need to copy the reloc
1748 into the shared library. However, if we are linking with
1749 -Bsymbolic, we do not need to copy a reloc against a
1750 global symbol which is defined in an object we are
1751 including in the link (i.e., DEF_REGULAR is set). At
1752 this point we have not seen all the input files, so it is
1753 possible that DEF_REGULAR is not set now but will be set
1754 later (it is never cleared). In case of a weak definition,
1755 DEF_REGULAR may be cleared later by a strong definition in
1756 a shared library. We account for that possibility below by
1757 storing information in the relocs_copied field of the hash
1758 table entry. A similar situation occurs when creating
1759 shared libraries and symbol visibility changes render the
1760 symbol local.
1761
1762 If on the other hand, we are creating an executable, we
1763 may need to keep relocations for symbols satisfied by a
1764 dynamic library if we manage to avoid copy relocs for the
1765 symbol. */
1766 if ((bfd_link_pic (info)
1767 && (sec->flags & SEC_ALLOC) != 0
1768 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1769 || (h != NULL
1770 && (! SYMBOLIC_BIND (info, h)
1771 || h->root.type == bfd_link_hash_defweak
1772 || !h->def_regular))))
1773 || (!bfd_link_pic (info)
1774 && (sec->flags & SEC_ALLOC) != 0
1775 && h != NULL
1776 && (h->root.type == bfd_link_hash_defweak
1777 || !h->def_regular))
1778 || (!bfd_link_pic (info)
1779 && h != NULL
1780 && h->type == STT_GNU_IFUNC))
1781 {
1782 struct _bfd_sparc_elf_dyn_relocs *p;
1783 struct _bfd_sparc_elf_dyn_relocs **head;
1784
1785 /* When creating a shared object, we must copy these
1786 relocs into the output file. We create a reloc
1787 section in dynobj and make room for the reloc. */
1788 if (sreloc == NULL)
1789 {
1790 sreloc = _bfd_elf_make_dynamic_reloc_section
1791 (sec, htab->elf.dynobj, htab->word_align_power,
1792 abfd, /*rela?*/ TRUE);
1793
1794 if (sreloc == NULL)
1795 return FALSE;
1796 }
1797
1798 /* If this is a global symbol, we count the number of
1799 relocations we need for this symbol. */
1800 if (h != NULL)
1801 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1802 else
1803 {
1804 /* Track dynamic relocs needed for local syms too.
1805 We really need local syms available to do this
1806 easily. Oh well. */
1807 asection *s;
1808 void *vpp;
1809
1810 BFD_ASSERT (isym != NULL);
1811 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1812 if (s == NULL)
1813 s = sec;
1814
1815 vpp = &elf_section_data (s)->local_dynrel;
1816 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1817 }
1818
1819 p = *head;
1820 if (p == NULL || p->sec != sec)
1821 {
1822 bfd_size_type amt = sizeof *p;
1823 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1824 bfd_alloc (htab->elf.dynobj, amt));
1825 if (p == NULL)
1826 return FALSE;
1827 p->next = *head;
1828 *head = p;
1829 p->sec = sec;
1830 p->count = 0;
1831 p->pc_count = 0;
1832 }
1833
1834 p->count += 1;
1835 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1836 p->pc_count += 1;
1837 }
1838
1839 break;
1840
1841 case R_SPARC_GNU_VTINHERIT:
1842 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1843 return FALSE;
1844 break;
1845
1846 case R_SPARC_GNU_VTENTRY:
1847 BFD_ASSERT (h != NULL);
1848 if (h != NULL
1849 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1850 return FALSE;
1851 break;
1852
1853 case R_SPARC_REGISTER:
1854 /* Nothing to do. */
1855 break;
1856
1857 default:
1858 break;
1859 }
1860 }
1861
1862 return TRUE;
1863 }
1864 \f
1865 asection *
1866 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1867 struct bfd_link_info *info,
1868 Elf_Internal_Rela *rel,
1869 struct elf_link_hash_entry *h,
1870 Elf_Internal_Sym *sym)
1871 {
1872 if (h != NULL)
1873 switch (SPARC_ELF_R_TYPE (rel->r_info))
1874 {
1875 case R_SPARC_GNU_VTINHERIT:
1876 case R_SPARC_GNU_VTENTRY:
1877 return NULL;
1878 }
1879
1880 /* FIXME: The test here, in check_relocs and in relocate_section
1881 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
1882 if (bfd_link_pic (info))
1883 {
1884 switch (SPARC_ELF_R_TYPE (rel->r_info))
1885 {
1886 case R_SPARC_TLS_GD_CALL:
1887 case R_SPARC_TLS_LDM_CALL:
1888 /* This reloc implicitly references __tls_get_addr. We know
1889 another reloc will reference the same symbol as the one
1890 on this reloc, so the real symbol and section will be
1891 gc marked when processing the other reloc. That lets
1892 us handle __tls_get_addr here. */
1893 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1894 FALSE, FALSE, TRUE);
1895 BFD_ASSERT (h != NULL);
1896 h->mark = 1;
1897 if (h->u.weakdef != NULL)
1898 h->u.weakdef->mark = 1;
1899 sym = NULL;
1900 }
1901 }
1902
1903 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1904 }
1905
1906 static Elf_Internal_Rela *
1907 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1908 Elf_Internal_Rela *relend,
1909 bfd_vma offset)
1910 {
1911 while (rel < relend)
1912 {
1913 if (rel->r_offset == offset)
1914 return rel;
1915 rel++;
1916 }
1917 return NULL;
1918 }
1919
1920 /* Update the got entry reference counts for the section being removed. */
1921 bfd_boolean
1922 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1923 asection *sec, const Elf_Internal_Rela *relocs)
1924 {
1925 struct _bfd_sparc_elf_link_hash_table *htab;
1926 Elf_Internal_Shdr *symtab_hdr;
1927 struct elf_link_hash_entry **sym_hashes;
1928 bfd_signed_vma *local_got_refcounts;
1929 const Elf_Internal_Rela *rel, *relend;
1930
1931 if (bfd_link_relocatable (info))
1932 return TRUE;
1933
1934 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1935
1936 elf_section_data (sec)->local_dynrel = NULL;
1937
1938 htab = _bfd_sparc_elf_hash_table (info);
1939 BFD_ASSERT (htab != NULL);
1940 symtab_hdr = &elf_symtab_hdr (abfd);
1941 sym_hashes = elf_sym_hashes (abfd);
1942 local_got_refcounts = elf_local_got_refcounts (abfd);
1943
1944 relend = relocs + sec->reloc_count;
1945 for (rel = relocs; rel < relend; rel++)
1946 {
1947 unsigned long r_symndx;
1948 unsigned int r_type;
1949 struct elf_link_hash_entry *h = NULL;
1950
1951 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1952 if (r_symndx >= symtab_hdr->sh_info)
1953 {
1954 struct _bfd_sparc_elf_link_hash_entry *eh;
1955 struct _bfd_sparc_elf_dyn_relocs **pp;
1956 struct _bfd_sparc_elf_dyn_relocs *p;
1957
1958 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1959 while (h->root.type == bfd_link_hash_indirect
1960 || h->root.type == bfd_link_hash_warning)
1961 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1962 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1963 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1964 if (p->sec == sec)
1965 {
1966 /* Everything must go for SEC. */
1967 *pp = p->next;
1968 break;
1969 }
1970 }
1971
1972 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1973 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1974 switch (r_type)
1975 {
1976 case R_SPARC_TLS_LDM_HI22:
1977 case R_SPARC_TLS_LDM_LO10:
1978 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1979 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1980 break;
1981
1982 case R_SPARC_TLS_GD_HI22:
1983 case R_SPARC_TLS_GD_LO10:
1984 case R_SPARC_TLS_IE_HI22:
1985 case R_SPARC_TLS_IE_LO10:
1986 case R_SPARC_GOT10:
1987 case R_SPARC_GOT13:
1988 case R_SPARC_GOT22:
1989 case R_SPARC_GOTDATA_HIX22:
1990 case R_SPARC_GOTDATA_LOX10:
1991 case R_SPARC_GOTDATA_OP_HIX22:
1992 case R_SPARC_GOTDATA_OP_LOX10:
1993 if (h != NULL)
1994 {
1995 if (h->got.refcount > 0)
1996 h->got.refcount--;
1997 }
1998 else
1999 {
2000 switch (r_type)
2001 {
2002 case R_SPARC_GOTDATA_OP_HIX22:
2003 case R_SPARC_GOTDATA_OP_LOX10:
2004 break;
2005
2006 default:
2007 if (local_got_refcounts[r_symndx] > 0)
2008 local_got_refcounts[r_symndx]--;
2009 break;
2010 }
2011 }
2012 break;
2013
2014 case R_SPARC_PC10:
2015 case R_SPARC_PC22:
2016 case R_SPARC_PC_HH22:
2017 case R_SPARC_PC_HM10:
2018 case R_SPARC_PC_LM22:
2019 if (h != NULL
2020 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2021 break;
2022 /* Fall through. */
2023
2024 case R_SPARC_DISP8:
2025 case R_SPARC_DISP16:
2026 case R_SPARC_DISP32:
2027 case R_SPARC_DISP64:
2028 case R_SPARC_WDISP30:
2029 case R_SPARC_WDISP22:
2030 case R_SPARC_WDISP19:
2031 case R_SPARC_WDISP16:
2032 case R_SPARC_WDISP10:
2033 case R_SPARC_8:
2034 case R_SPARC_16:
2035 case R_SPARC_32:
2036 case R_SPARC_HI22:
2037 case R_SPARC_22:
2038 case R_SPARC_13:
2039 case R_SPARC_LO10:
2040 case R_SPARC_UA16:
2041 case R_SPARC_UA32:
2042 case R_SPARC_PLT32:
2043 case R_SPARC_10:
2044 case R_SPARC_11:
2045 case R_SPARC_64:
2046 case R_SPARC_OLO10:
2047 case R_SPARC_HH22:
2048 case R_SPARC_HM10:
2049 case R_SPARC_LM22:
2050 case R_SPARC_7:
2051 case R_SPARC_5:
2052 case R_SPARC_6:
2053 case R_SPARC_HIX22:
2054 case R_SPARC_LOX10:
2055 case R_SPARC_H44:
2056 case R_SPARC_M44:
2057 case R_SPARC_L44:
2058 case R_SPARC_H34:
2059 case R_SPARC_UA64:
2060 if (bfd_link_pic (info))
2061 break;
2062 /* Fall through. */
2063
2064 case R_SPARC_WPLT30:
2065 if (h != NULL)
2066 {
2067 if (h->plt.refcount > 0)
2068 h->plt.refcount--;
2069 }
2070 break;
2071
2072 default:
2073 break;
2074 }
2075 }
2076
2077 return TRUE;
2078 }
2079
2080 /* Adjust a symbol defined by a dynamic object and referenced by a
2081 regular object. The current definition is in some section of the
2082 dynamic object, but we're not including those sections. We have to
2083 change the definition to something the rest of the link can
2084 understand. */
2085
2086 bfd_boolean
2087 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2088 struct elf_link_hash_entry *h)
2089 {
2090 struct _bfd_sparc_elf_link_hash_table *htab;
2091 struct _bfd_sparc_elf_link_hash_entry * eh;
2092 struct _bfd_sparc_elf_dyn_relocs *p;
2093 asection *s;
2094
2095 htab = _bfd_sparc_elf_hash_table (info);
2096 BFD_ASSERT (htab != NULL);
2097
2098 /* Make sure we know what is going on here. */
2099 BFD_ASSERT (htab->elf.dynobj != NULL
2100 && (h->needs_plt
2101 || h->type == STT_GNU_IFUNC
2102 || h->u.weakdef != NULL
2103 || (h->def_dynamic
2104 && h->ref_regular
2105 && !h->def_regular)));
2106
2107 /* If this is a function, put it in the procedure linkage table. We
2108 will fill in the contents of the procedure linkage table later
2109 (although we could actually do it here). The STT_NOTYPE
2110 condition is a hack specifically for the Oracle libraries
2111 delivered for Solaris; for some inexplicable reason, they define
2112 some of their functions as STT_NOTYPE when they really should be
2113 STT_FUNC. */
2114 if (h->type == STT_FUNC
2115 || h->type == STT_GNU_IFUNC
2116 || h->needs_plt
2117 || (h->type == STT_NOTYPE
2118 && (h->root.type == bfd_link_hash_defined
2119 || h->root.type == bfd_link_hash_defweak)
2120 && (h->root.u.def.section->flags & SEC_CODE) != 0))
2121 {
2122 if (h->plt.refcount <= 0
2123 || (h->type != STT_GNU_IFUNC
2124 && (SYMBOL_CALLS_LOCAL (info, h)
2125 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2126 && h->root.type == bfd_link_hash_undefweak))))
2127 {
2128 /* This case can occur if we saw a WPLT30 reloc in an input
2129 file, but the symbol was never referred to by a dynamic
2130 object, or if all references were garbage collected. In
2131 such a case, we don't actually need to build a procedure
2132 linkage table, and we can just do a WDISP30 reloc instead. */
2133 h->plt.offset = (bfd_vma) -1;
2134 h->needs_plt = 0;
2135 }
2136
2137 return TRUE;
2138 }
2139 else
2140 h->plt.offset = (bfd_vma) -1;
2141
2142 /* If this is a weak symbol, and there is a real definition, the
2143 processor independent code will have arranged for us to see the
2144 real definition first, and we can just use the same value. */
2145 if (h->u.weakdef != NULL)
2146 {
2147 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2148 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2149 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2150 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2151 return TRUE;
2152 }
2153
2154 /* This is a reference to a symbol defined by a dynamic object which
2155 is not a function. */
2156
2157 /* If we are creating a shared library, we must presume that the
2158 only references to the symbol are via the global offset table.
2159 For such cases we need not do anything here; the relocations will
2160 be handled correctly by relocate_section. */
2161 if (bfd_link_pic (info))
2162 return TRUE;
2163
2164 /* If there are no references to this symbol that do not use the
2165 GOT, we don't need to generate a copy reloc. */
2166 if (!h->non_got_ref)
2167 return TRUE;
2168
2169 /* If -z nocopyreloc was given, we won't generate them either. */
2170 if (info->nocopyreloc)
2171 {
2172 h->non_got_ref = 0;
2173 return TRUE;
2174 }
2175
2176 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2177 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2178 {
2179 s = p->sec->output_section;
2180 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2181 break;
2182 }
2183
2184 /* If we didn't find any dynamic relocs in read-only sections, then
2185 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2186 if (p == NULL)
2187 {
2188 h->non_got_ref = 0;
2189 return TRUE;
2190 }
2191
2192 /* We must allocate the symbol in our .dynbss section, which will
2193 become part of the .bss section of the executable. There will be
2194 an entry for this symbol in the .dynsym section. The dynamic
2195 object will contain position independent code, so all references
2196 from the dynamic object to this symbol will go through the global
2197 offset table. The dynamic linker will use the .dynsym entry to
2198 determine the address it must put in the global offset table, so
2199 both the dynamic object and the regular object will refer to the
2200 same memory location for the variable. */
2201
2202 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2203 to copy the initial value out of the dynamic object and into the
2204 runtime process image. We need to remember the offset into the
2205 .rel.bss section we are going to use. */
2206 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2207 {
2208 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
2209 h->needs_copy = 1;
2210 }
2211
2212 s = htab->sdynbss;
2213
2214 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2215 }
2216
2217 /* Allocate space in .plt, .got and associated reloc sections for
2218 dynamic relocs. */
2219
2220 static bfd_boolean
2221 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2222 {
2223 struct bfd_link_info *info;
2224 struct _bfd_sparc_elf_link_hash_table *htab;
2225 struct _bfd_sparc_elf_link_hash_entry *eh;
2226 struct _bfd_sparc_elf_dyn_relocs *p;
2227
2228 if (h->root.type == bfd_link_hash_indirect)
2229 return TRUE;
2230
2231 info = (struct bfd_link_info *) inf;
2232 htab = _bfd_sparc_elf_hash_table (info);
2233 BFD_ASSERT (htab != NULL);
2234
2235 if ((htab->elf.dynamic_sections_created
2236 && h->plt.refcount > 0)
2237 || (h->type == STT_GNU_IFUNC
2238 && h->def_regular
2239 && h->ref_regular))
2240 {
2241 /* Make sure this symbol is output as a dynamic symbol.
2242 Undefined weak syms won't yet be marked as dynamic. */
2243 if (h->dynindx == -1
2244 && !h->forced_local)
2245 {
2246 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2247 return FALSE;
2248 }
2249
2250 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
2251 || (h->type == STT_GNU_IFUNC
2252 && h->def_regular))
2253 {
2254 asection *s = htab->elf.splt;
2255
2256 if (s == NULL)
2257 s = htab->elf.iplt;
2258
2259 /* Allocate room for the header. */
2260 if (s->size == 0)
2261 {
2262 s->size = htab->plt_header_size;
2263
2264 /* Allocate space for the .rela.plt.unloaded relocations. */
2265 if (htab->is_vxworks && !bfd_link_pic (info))
2266 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2267 }
2268
2269 /* The procedure linkage table size is bounded by the magnitude
2270 of the offset we can describe in the entry. */
2271 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2272 (((bfd_vma)1 << 31) << 1) : 0x400000))
2273 {
2274 bfd_set_error (bfd_error_bad_value);
2275 return FALSE;
2276 }
2277
2278 if (SPARC_ELF_WORD_BYTES(htab) == 8
2279 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2280 {
2281 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2282
2283
2284 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2285
2286 h->plt.offset = (s->size - (off * 8));
2287 }
2288 else
2289 h->plt.offset = s->size;
2290
2291 /* If this symbol is not defined in a regular file, and we are
2292 not generating a shared library, then set the symbol to this
2293 location in the .plt. This is required to make function
2294 pointers compare as equal between the normal executable and
2295 the shared library. */
2296 if (! bfd_link_pic (info)
2297 && !h->def_regular)
2298 {
2299 h->root.u.def.section = s;
2300 h->root.u.def.value = h->plt.offset;
2301 }
2302
2303 /* Make room for this entry. */
2304 s->size += htab->plt_entry_size;
2305
2306 /* We also need to make an entry in the .rela.plt section. */
2307 if (s == htab->elf.splt)
2308 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2309 else
2310 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2311
2312 if (htab->is_vxworks)
2313 {
2314 /* Allocate space for the .got.plt entry. */
2315 htab->elf.sgotplt->size += 4;
2316
2317 /* ...and for the .rela.plt.unloaded relocations. */
2318 if (!bfd_link_pic (info))
2319 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2320 }
2321 }
2322 else
2323 {
2324 h->plt.offset = (bfd_vma) -1;
2325 h->needs_plt = 0;
2326 }
2327 }
2328 else
2329 {
2330 h->plt.offset = (bfd_vma) -1;
2331 h->needs_plt = 0;
2332 }
2333
2334 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2335 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2336 if (h->got.refcount > 0
2337 && !bfd_link_pic (info)
2338 && h->dynindx == -1
2339 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2340 h->got.offset = (bfd_vma) -1;
2341 else if (h->got.refcount > 0)
2342 {
2343 asection *s;
2344 bfd_boolean dyn;
2345 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2346
2347 /* Make sure this symbol is output as a dynamic symbol.
2348 Undefined weak syms won't yet be marked as dynamic. */
2349 if (h->dynindx == -1
2350 && !h->forced_local)
2351 {
2352 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2353 return FALSE;
2354 }
2355
2356 s = htab->elf.sgot;
2357 h->got.offset = s->size;
2358 s->size += SPARC_ELF_WORD_BYTES (htab);
2359 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2360 if (tls_type == GOT_TLS_GD)
2361 s->size += SPARC_ELF_WORD_BYTES (htab);
2362 dyn = htab->elf.dynamic_sections_created;
2363 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2364 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2365 global. */
2366 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2367 || tls_type == GOT_TLS_IE
2368 || h->type == STT_GNU_IFUNC)
2369 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2370 else if (tls_type == GOT_TLS_GD)
2371 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2372 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2373 bfd_link_pic (info),
2374 h))
2375 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2376 }
2377 else
2378 h->got.offset = (bfd_vma) -1;
2379
2380 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2381 if (eh->dyn_relocs == NULL)
2382 return TRUE;
2383
2384 /* In the shared -Bsymbolic case, discard space allocated for
2385 dynamic pc-relative relocs against symbols which turn out to be
2386 defined in regular objects. For the normal shared case, discard
2387 space for pc-relative relocs that have become local due to symbol
2388 visibility changes. */
2389
2390 if (bfd_link_pic (info))
2391 {
2392 if (SYMBOL_CALLS_LOCAL (info, h))
2393 {
2394 struct _bfd_sparc_elf_dyn_relocs **pp;
2395
2396 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2397 {
2398 p->count -= p->pc_count;
2399 p->pc_count = 0;
2400 if (p->count == 0)
2401 *pp = p->next;
2402 else
2403 pp = &p->next;
2404 }
2405 }
2406
2407 if (htab->is_vxworks)
2408 {
2409 struct _bfd_sparc_elf_dyn_relocs **pp;
2410
2411 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2412 {
2413 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2414 *pp = p->next;
2415 else
2416 pp = &p->next;
2417 }
2418 }
2419
2420 /* Also discard relocs on undefined weak syms with non-default
2421 visibility. */
2422 if (eh->dyn_relocs != NULL
2423 && h->root.type == bfd_link_hash_undefweak)
2424 {
2425 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2426 eh->dyn_relocs = NULL;
2427
2428 /* Make sure undefined weak symbols are output as a dynamic
2429 symbol in PIEs. */
2430 else if (h->dynindx == -1
2431 && !h->forced_local)
2432 {
2433 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2434 return FALSE;
2435 }
2436 }
2437 }
2438 else
2439 {
2440 /* For the non-shared case, discard space for relocs against
2441 symbols which turn out to need copy relocs or are not
2442 dynamic. */
2443
2444 if (!h->non_got_ref
2445 && ((h->def_dynamic
2446 && !h->def_regular)
2447 || (htab->elf.dynamic_sections_created
2448 && (h->root.type == bfd_link_hash_undefweak
2449 || h->root.type == bfd_link_hash_undefined))))
2450 {
2451 /* Make sure this symbol is output as a dynamic symbol.
2452 Undefined weak syms won't yet be marked as dynamic. */
2453 if (h->dynindx == -1
2454 && !h->forced_local)
2455 {
2456 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2457 return FALSE;
2458 }
2459
2460 /* If that succeeded, we know we'll be keeping all the
2461 relocs. */
2462 if (h->dynindx != -1)
2463 goto keep;
2464 }
2465
2466 eh->dyn_relocs = NULL;
2467
2468 keep: ;
2469 }
2470
2471 /* Finally, allocate space. */
2472 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2473 {
2474 asection *sreloc = elf_section_data (p->sec)->sreloc;
2475 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2476 }
2477
2478 return TRUE;
2479 }
2480
2481 /* Allocate space in .plt, .got and associated reloc sections for
2482 local dynamic relocs. */
2483
2484 static bfd_boolean
2485 allocate_local_dynrelocs (void **slot, void *inf)
2486 {
2487 struct elf_link_hash_entry *h
2488 = (struct elf_link_hash_entry *) *slot;
2489
2490 if (h->type != STT_GNU_IFUNC
2491 || !h->def_regular
2492 || !h->ref_regular
2493 || !h->forced_local
2494 || h->root.type != bfd_link_hash_defined)
2495 abort ();
2496
2497 return allocate_dynrelocs (h, inf);
2498 }
2499
2500 /* Find any dynamic relocs that apply to read-only sections. */
2501
2502 static bfd_boolean
2503 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2504 {
2505 struct _bfd_sparc_elf_link_hash_entry *eh;
2506 struct _bfd_sparc_elf_dyn_relocs *p;
2507
2508 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2509 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2510 {
2511 asection *s = p->sec->output_section;
2512
2513 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2514 {
2515 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2516
2517 info->flags |= DF_TEXTREL;
2518
2519 /* Not an error, just cut short the traversal. */
2520 return FALSE;
2521 }
2522 }
2523 return TRUE;
2524 }
2525
2526 /* Return true if the dynamic symbol for a given section should be
2527 omitted when creating a shared library. */
2528
2529 bfd_boolean
2530 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2531 struct bfd_link_info *info,
2532 asection *p)
2533 {
2534 /* We keep the .got section symbol so that explicit relocations
2535 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2536 can be turned into relocations against the .got symbol. */
2537 if (strcmp (p->name, ".got") == 0)
2538 return FALSE;
2539
2540 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2541 }
2542
2543 /* Set the sizes of the dynamic sections. */
2544
2545 bfd_boolean
2546 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2547 struct bfd_link_info *info)
2548 {
2549 struct _bfd_sparc_elf_link_hash_table *htab;
2550 bfd *dynobj;
2551 asection *s;
2552 bfd *ibfd;
2553
2554 htab = _bfd_sparc_elf_hash_table (info);
2555 BFD_ASSERT (htab != NULL);
2556 dynobj = htab->elf.dynobj;
2557 BFD_ASSERT (dynobj != NULL);
2558
2559 if (elf_hash_table (info)->dynamic_sections_created)
2560 {
2561 /* Set the contents of the .interp section to the interpreter. */
2562 if (bfd_link_executable (info) && !info->nointerp)
2563 {
2564 s = bfd_get_linker_section (dynobj, ".interp");
2565 BFD_ASSERT (s != NULL);
2566 s->size = htab->dynamic_interpreter_size;
2567 s->contents = (unsigned char *) htab->dynamic_interpreter;
2568 }
2569 }
2570
2571 /* Set up .got offsets for local syms, and space for local dynamic
2572 relocs. */
2573 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2574 {
2575 bfd_signed_vma *local_got;
2576 bfd_signed_vma *end_local_got;
2577 char *local_tls_type;
2578 bfd_size_type locsymcount;
2579 Elf_Internal_Shdr *symtab_hdr;
2580 asection *srel;
2581
2582 if (! is_sparc_elf (ibfd))
2583 continue;
2584
2585 for (s = ibfd->sections; s != NULL; s = s->next)
2586 {
2587 struct _bfd_sparc_elf_dyn_relocs *p;
2588
2589 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2590 {
2591 if (!bfd_is_abs_section (p->sec)
2592 && bfd_is_abs_section (p->sec->output_section))
2593 {
2594 /* Input section has been discarded, either because
2595 it is a copy of a linkonce section or due to
2596 linker script /DISCARD/, so we'll be discarding
2597 the relocs too. */
2598 }
2599 else if (htab->is_vxworks
2600 && strcmp (p->sec->output_section->name,
2601 ".tls_vars") == 0)
2602 {
2603 /* Relocations in vxworks .tls_vars sections are
2604 handled specially by the loader. */
2605 }
2606 else if (p->count != 0)
2607 {
2608 srel = elf_section_data (p->sec)->sreloc;
2609 if (!htab->elf.dynamic_sections_created)
2610 srel = htab->elf.irelplt;
2611 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2612 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2613 info->flags |= DF_TEXTREL;
2614 }
2615 }
2616 }
2617
2618 local_got = elf_local_got_refcounts (ibfd);
2619 if (!local_got)
2620 continue;
2621
2622 symtab_hdr = &elf_symtab_hdr (ibfd);
2623 locsymcount = symtab_hdr->sh_info;
2624 end_local_got = local_got + locsymcount;
2625 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2626 s = htab->elf.sgot;
2627 srel = htab->elf.srelgot;
2628 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2629 {
2630 if (*local_got > 0)
2631 {
2632 *local_got = s->size;
2633 s->size += SPARC_ELF_WORD_BYTES (htab);
2634 if (*local_tls_type == GOT_TLS_GD)
2635 s->size += SPARC_ELF_WORD_BYTES (htab);
2636 if (bfd_link_pic (info)
2637 || *local_tls_type == GOT_TLS_GD
2638 || *local_tls_type == GOT_TLS_IE)
2639 srel->size += SPARC_ELF_RELA_BYTES (htab);
2640 }
2641 else
2642 *local_got = (bfd_vma) -1;
2643 }
2644 }
2645
2646 if (htab->tls_ldm_got.refcount > 0)
2647 {
2648 /* Allocate 2 got entries and 1 dynamic reloc for
2649 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2650 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2651 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2652 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2653 }
2654 else
2655 htab->tls_ldm_got.offset = -1;
2656
2657 /* Allocate global sym .plt and .got entries, and space for global
2658 sym dynamic relocs. */
2659 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2660
2661 /* Allocate .plt and .got entries, and space for local symbols. */
2662 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2663
2664 if (! ABI_64_P (output_bfd)
2665 && !htab->is_vxworks
2666 && elf_hash_table (info)->dynamic_sections_created)
2667 {
2668 /* Make space for the trailing nop in .plt. */
2669 if (htab->elf.splt->size > 0)
2670 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
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
2676 FIXME: Make this optimization work for 64-bit too. */
2677 if (htab->elf.sgot->size >= 0x1000
2678 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2679 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2680 }
2681
2682 /* The check_relocs and adjust_dynamic_symbol entry points have
2683 determined the sizes of the various dynamic sections. Allocate
2684 memory for them. */
2685 for (s = dynobj->sections; s != NULL; s = s->next)
2686 {
2687 if ((s->flags & SEC_LINKER_CREATED) == 0)
2688 continue;
2689
2690 if (s == htab->elf.splt
2691 || s == htab->elf.sgot
2692 || s == htab->sdynbss
2693 || s == htab->elf.iplt
2694 || s == htab->elf.sgotplt)
2695 {
2696 /* Strip this section if we don't need it; see the
2697 comment below. */
2698 }
2699 else if (CONST_STRNEQ (s->name, ".rela"))
2700 {
2701 if (s->size != 0)
2702 {
2703 /* We use the reloc_count field as a counter if we need
2704 to copy relocs into the output file. */
2705 s->reloc_count = 0;
2706 }
2707 }
2708 else
2709 {
2710 /* It's not one of our sections. */
2711 continue;
2712 }
2713
2714 if (s->size == 0)
2715 {
2716 /* If we don't need this section, strip it from the
2717 output file. This is mostly to handle .rela.bss and
2718 .rela.plt. We must create both sections in
2719 create_dynamic_sections, because they must be created
2720 before the linker maps input sections to output
2721 sections. The linker does that before
2722 adjust_dynamic_symbol is called, and it is that
2723 function which decides whether anything needs to go
2724 into these sections. */
2725 s->flags |= SEC_EXCLUDE;
2726 continue;
2727 }
2728
2729 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2730 continue;
2731
2732 /* Allocate memory for the section contents. Zero the memory
2733 for the benefit of .rela.plt, which has 4 unused entries
2734 at the beginning, and we don't want garbage. */
2735 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2736 if (s->contents == NULL)
2737 return FALSE;
2738 }
2739
2740 if (elf_hash_table (info)->dynamic_sections_created)
2741 {
2742 /* Add some entries to the .dynamic section. We fill in the
2743 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2744 must add the entries now so that we get the correct size for
2745 the .dynamic section. The DT_DEBUG entry is filled in by the
2746 dynamic linker and used by the debugger. */
2747 #define add_dynamic_entry(TAG, VAL) \
2748 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2749
2750 if (bfd_link_executable (info))
2751 {
2752 if (!add_dynamic_entry (DT_DEBUG, 0))
2753 return FALSE;
2754 }
2755
2756 if (htab->elf.srelplt->size != 0)
2757 {
2758 if (!add_dynamic_entry (DT_PLTGOT, 0)
2759 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2760 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2761 || !add_dynamic_entry (DT_JMPREL, 0))
2762 return FALSE;
2763 }
2764
2765 if (!add_dynamic_entry (DT_RELA, 0)
2766 || !add_dynamic_entry (DT_RELASZ, 0)
2767 || !add_dynamic_entry (DT_RELAENT,
2768 SPARC_ELF_RELA_BYTES (htab)))
2769 return FALSE;
2770
2771 /* If any dynamic relocs apply to a read-only section,
2772 then we need a DT_TEXTREL entry. */
2773 if ((info->flags & DF_TEXTREL) == 0)
2774 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2775
2776 if (info->flags & DF_TEXTREL)
2777 {
2778 if (!add_dynamic_entry (DT_TEXTREL, 0))
2779 return FALSE;
2780 }
2781
2782 if (ABI_64_P (output_bfd))
2783 {
2784 int reg;
2785 struct _bfd_sparc_elf_app_reg * app_regs;
2786 struct elf_strtab_hash *dynstr;
2787 struct elf_link_hash_table *eht = elf_hash_table (info);
2788
2789 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2790 entries if needed. */
2791 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2792 dynstr = eht->dynstr;
2793
2794 for (reg = 0; reg < 4; reg++)
2795 if (app_regs [reg].name != NULL)
2796 {
2797 struct elf_link_local_dynamic_entry *entry, *e;
2798
2799 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2800 return FALSE;
2801
2802 entry = (struct elf_link_local_dynamic_entry *)
2803 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2804 if (entry == NULL)
2805 return FALSE;
2806
2807 /* We cheat here a little bit: the symbol will not be local, so we
2808 put it at the end of the dynlocal linked list. We will fix it
2809 later on, as we have to fix other fields anyway. */
2810 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2811 entry->isym.st_size = 0;
2812 if (*app_regs [reg].name != '\0')
2813 entry->isym.st_name
2814 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2815 else
2816 entry->isym.st_name = 0;
2817 entry->isym.st_other = 0;
2818 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2819 STT_REGISTER);
2820 entry->isym.st_shndx = app_regs [reg].shndx;
2821 entry->isym.st_target_internal = 0;
2822 entry->next = NULL;
2823 entry->input_bfd = output_bfd;
2824 entry->input_indx = -1;
2825
2826 if (eht->dynlocal == NULL)
2827 eht->dynlocal = entry;
2828 else
2829 {
2830 for (e = eht->dynlocal; e->next; e = e->next)
2831 ;
2832 e->next = entry;
2833 }
2834 eht->dynsymcount++;
2835 }
2836 }
2837 if (htab->is_vxworks
2838 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2839 return FALSE;
2840 }
2841 #undef add_dynamic_entry
2842
2843 return TRUE;
2844 }
2845 \f
2846 bfd_boolean
2847 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2848 {
2849 if (!sec->used_by_bfd)
2850 {
2851 struct _bfd_sparc_elf_section_data *sdata;
2852 bfd_size_type amt = sizeof (*sdata);
2853
2854 sdata = bfd_zalloc (abfd, amt);
2855 if (sdata == NULL)
2856 return FALSE;
2857 sec->used_by_bfd = sdata;
2858 }
2859
2860 return _bfd_elf_new_section_hook (abfd, sec);
2861 }
2862
2863 bfd_boolean
2864 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2865 struct bfd_section *section,
2866 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2867 bfd_boolean *again)
2868 {
2869 if (bfd_link_relocatable (link_info))
2870 (*link_info->callbacks->einfo)
2871 (_("%P%F: --relax and -r may not be used together\n"));
2872
2873 *again = FALSE;
2874 sec_do_relax (section) = 1;
2875 return TRUE;
2876 }
2877 \f
2878 /* Return the base VMA address which should be subtracted from real addresses
2879 when resolving @dtpoff relocation.
2880 This is PT_TLS segment p_vaddr. */
2881
2882 static bfd_vma
2883 dtpoff_base (struct bfd_link_info *info)
2884 {
2885 /* If tls_sec is NULL, we should have signalled an error already. */
2886 if (elf_hash_table (info)->tls_sec == NULL)
2887 return 0;
2888 return elf_hash_table (info)->tls_sec->vma;
2889 }
2890
2891 /* Return the relocation value for @tpoff relocation
2892 if STT_TLS virtual address is ADDRESS. */
2893
2894 static bfd_vma
2895 tpoff (struct bfd_link_info *info, bfd_vma address)
2896 {
2897 struct elf_link_hash_table *htab = elf_hash_table (info);
2898 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2899 bfd_vma static_tls_size;
2900
2901 /* If tls_sec is NULL, we should have signalled an error already. */
2902 if (htab->tls_sec == NULL)
2903 return 0;
2904
2905 /* Consider special static TLS alignment requirements. */
2906 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2907 return address - static_tls_size - htab->tls_sec->vma;
2908 }
2909
2910 /* Return the relocation value for a %gdop relocation. */
2911
2912 static bfd_vma
2913 gdopoff (struct bfd_link_info *info, bfd_vma address)
2914 {
2915 struct elf_link_hash_table *htab = elf_hash_table (info);
2916 bfd_vma got_base;
2917
2918 got_base = (htab->hgot->root.u.def.value
2919 + htab->hgot->root.u.def.section->output_offset
2920 + htab->hgot->root.u.def.section->output_section->vma);
2921
2922 return address - got_base;
2923 }
2924
2925 /* Relocate a SPARC ELF section. */
2926
2927 bfd_boolean
2928 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2929 struct bfd_link_info *info,
2930 bfd *input_bfd,
2931 asection *input_section,
2932 bfd_byte *contents,
2933 Elf_Internal_Rela *relocs,
2934 Elf_Internal_Sym *local_syms,
2935 asection **local_sections)
2936 {
2937 struct _bfd_sparc_elf_link_hash_table *htab;
2938 Elf_Internal_Shdr *symtab_hdr;
2939 struct elf_link_hash_entry **sym_hashes;
2940 bfd_vma *local_got_offsets;
2941 bfd_vma got_base;
2942 asection *sreloc;
2943 Elf_Internal_Rela *rel;
2944 Elf_Internal_Rela *relend;
2945 int num_relocs;
2946 bfd_boolean is_vxworks_tls;
2947
2948 htab = _bfd_sparc_elf_hash_table (info);
2949 BFD_ASSERT (htab != NULL);
2950 symtab_hdr = &elf_symtab_hdr (input_bfd);
2951 sym_hashes = elf_sym_hashes (input_bfd);
2952 local_got_offsets = elf_local_got_offsets (input_bfd);
2953
2954 if (elf_hash_table (info)->hgot == NULL)
2955 got_base = 0;
2956 else
2957 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2958
2959 sreloc = elf_section_data (input_section)->sreloc;
2960 /* We have to handle relocations in vxworks .tls_vars sections
2961 specially, because the dynamic loader is 'weird'. */
2962 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
2963 && !strcmp (input_section->output_section->name,
2964 ".tls_vars"));
2965
2966 rel = relocs;
2967 if (ABI_64_P (output_bfd))
2968 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2969 else
2970 num_relocs = input_section->reloc_count;
2971 relend = relocs + num_relocs;
2972 for (; rel < relend; rel++)
2973 {
2974 int r_type, tls_type;
2975 reloc_howto_type *howto;
2976 unsigned long r_symndx;
2977 struct elf_link_hash_entry *h;
2978 Elf_Internal_Sym *sym;
2979 asection *sec;
2980 bfd_vma relocation, off;
2981 bfd_reloc_status_type r;
2982 bfd_boolean is_plt = FALSE;
2983 bfd_boolean unresolved_reloc;
2984
2985 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2986 if (r_type == R_SPARC_GNU_VTINHERIT
2987 || r_type == R_SPARC_GNU_VTENTRY)
2988 continue;
2989
2990 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2991 {
2992 bfd_set_error (bfd_error_bad_value);
2993 return FALSE;
2994 }
2995 howto = _bfd_sparc_elf_howto_table + r_type;
2996
2997 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2998 h = NULL;
2999 sym = NULL;
3000 sec = NULL;
3001 unresolved_reloc = FALSE;
3002 if (r_symndx < symtab_hdr->sh_info)
3003 {
3004 sym = local_syms + r_symndx;
3005 sec = local_sections[r_symndx];
3006 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3007
3008 if (!bfd_link_relocatable (info)
3009 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3010 {
3011 /* Relocate against local STT_GNU_IFUNC symbol. */
3012 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3013 rel, FALSE);
3014 if (h == NULL)
3015 abort ();
3016
3017 /* Set STT_GNU_IFUNC symbol value. */
3018 h->root.u.def.value = sym->st_value;
3019 h->root.u.def.section = sec;
3020 }
3021 }
3022 else
3023 {
3024 bfd_boolean warned, ignored;
3025
3026 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3027 r_symndx, symtab_hdr, sym_hashes,
3028 h, sec, relocation,
3029 unresolved_reloc, warned, ignored);
3030 if (warned)
3031 {
3032 /* To avoid generating warning messages about truncated
3033 relocations, set the relocation's address to be the same as
3034 the start of this section. */
3035 if (input_section->output_section != NULL)
3036 relocation = input_section->output_section->vma;
3037 else
3038 relocation = 0;
3039 }
3040 }
3041
3042 if (sec != NULL && discarded_section (sec))
3043 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3044 rel, 1, relend, howto, 0, contents);
3045
3046 if (bfd_link_relocatable (info))
3047 continue;
3048
3049 if (h != NULL
3050 && h->type == STT_GNU_IFUNC
3051 && h->def_regular)
3052 {
3053 asection *plt_sec;
3054 const char *name;
3055
3056 if ((input_section->flags & SEC_ALLOC) == 0
3057 || h->plt.offset == (bfd_vma) -1)
3058 abort ();
3059
3060 plt_sec = htab->elf.splt;
3061 if (! plt_sec)
3062 plt_sec =htab->elf.iplt;
3063
3064 switch (r_type)
3065 {
3066 case R_SPARC_GOTDATA_OP:
3067 continue;
3068
3069 case R_SPARC_GOTDATA_OP_HIX22:
3070 case R_SPARC_GOTDATA_OP_LOX10:
3071 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3072 ? R_SPARC_GOT22
3073 : R_SPARC_GOT10);
3074 howto = _bfd_sparc_elf_howto_table + r_type;
3075 /* Fall through. */
3076
3077 case R_SPARC_GOT10:
3078 case R_SPARC_GOT13:
3079 case R_SPARC_GOT22:
3080 if (htab->elf.sgot == NULL)
3081 abort ();
3082 off = h->got.offset;
3083 if (off == (bfd_vma) -1)
3084 abort();
3085 relocation = htab->elf.sgot->output_offset + off - got_base;
3086 goto do_relocation;
3087
3088 case R_SPARC_WPLT30:
3089 case R_SPARC_WDISP30:
3090 relocation = (plt_sec->output_section->vma
3091 + plt_sec->output_offset + h->plt.offset);
3092 goto do_relocation;
3093
3094 case R_SPARC_32:
3095 case R_SPARC_64:
3096 if (bfd_link_pic (info) && h->non_got_ref)
3097 {
3098 Elf_Internal_Rela outrel;
3099 bfd_vma offset;
3100
3101 offset = _bfd_elf_section_offset (output_bfd, info,
3102 input_section,
3103 rel->r_offset);
3104 if (offset == (bfd_vma) -1
3105 || offset == (bfd_vma) -2)
3106 abort();
3107
3108 outrel.r_offset = (input_section->output_section->vma
3109 + input_section->output_offset
3110 + offset);
3111
3112 if (h->dynindx == -1
3113 || h->forced_local
3114 || bfd_link_executable (info))
3115 {
3116 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3117 0, R_SPARC_IRELATIVE);
3118 outrel.r_addend = relocation + rel->r_addend;
3119 }
3120 else
3121 {
3122 if (h->dynindx == -1)
3123 abort();
3124 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3125 outrel.r_addend = rel->r_addend;
3126 }
3127
3128 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3129 continue;
3130 }
3131
3132 relocation = (plt_sec->output_section->vma
3133 + plt_sec->output_offset + h->plt.offset);
3134 goto do_relocation;
3135
3136 case R_SPARC_HI22:
3137 case R_SPARC_LO10:
3138 /* We should only see such relocs in static links. */
3139 if (bfd_link_pic (info))
3140 abort();
3141 relocation = (plt_sec->output_section->vma
3142 + plt_sec->output_offset + h->plt.offset);
3143 goto do_relocation;
3144
3145 default:
3146 if (h->root.root.string)
3147 name = h->root.root.string;
3148 else
3149 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3150 NULL);
3151 _bfd_error_handler
3152 /* xgettext:c-format */
3153 (_("%B: relocation %s against STT_GNU_IFUNC "
3154 "symbol `%s' isn't handled by %s"), input_bfd,
3155 _bfd_sparc_elf_howto_table[r_type].name,
3156 name, __FUNCTION__);
3157 bfd_set_error (bfd_error_bad_value);
3158 return FALSE;
3159 }
3160 }
3161
3162 switch (r_type)
3163 {
3164 case R_SPARC_GOTDATA_OP_HIX22:
3165 case R_SPARC_GOTDATA_OP_LOX10:
3166 if (SYMBOL_REFERENCES_LOCAL (info, h))
3167 {
3168 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3169 ? R_SPARC_GOTDATA_HIX22
3170 : R_SPARC_GOTDATA_LOX10);
3171 howto = _bfd_sparc_elf_howto_table + r_type;
3172 }
3173 break;
3174
3175 case R_SPARC_GOTDATA_OP:
3176 if (SYMBOL_REFERENCES_LOCAL (info, h))
3177 {
3178 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3179
3180 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3181 relocation = 0x80000000 | (insn & 0x3e07c01f);
3182 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3183 }
3184 continue;
3185 }
3186
3187 switch (r_type)
3188 {
3189 case R_SPARC_GOTDATA_HIX22:
3190 case R_SPARC_GOTDATA_LOX10:
3191 relocation = gdopoff (info, relocation);
3192 break;
3193
3194 case R_SPARC_GOTDATA_OP_HIX22:
3195 case R_SPARC_GOTDATA_OP_LOX10:
3196 case R_SPARC_GOT10:
3197 case R_SPARC_GOT13:
3198 case R_SPARC_GOT22:
3199 /* Relocation is to the entry for this symbol in the global
3200 offset table. */
3201 if (htab->elf.sgot == NULL)
3202 abort ();
3203
3204 if (h != NULL)
3205 {
3206 bfd_boolean dyn;
3207
3208 off = h->got.offset;
3209 BFD_ASSERT (off != (bfd_vma) -1);
3210 dyn = elf_hash_table (info)->dynamic_sections_created;
3211
3212 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3213 bfd_link_pic (info),
3214 h)
3215 || (bfd_link_pic (info)
3216 && SYMBOL_REFERENCES_LOCAL (info, h)))
3217 {
3218 /* This is actually a static link, or it is a
3219 -Bsymbolic link and the symbol is defined
3220 locally, or the symbol was forced to be local
3221 because of a version file. We must initialize
3222 this entry in the global offset table. Since the
3223 offset must always be a multiple of 8 for 64-bit
3224 and 4 for 32-bit, we use the least significant bit
3225 to record whether we have initialized it already.
3226
3227 When doing a dynamic link, we create a .rela.got
3228 relocation entry to initialize the value. This
3229 is done in the finish_dynamic_symbol routine. */
3230 if ((off & 1) != 0)
3231 off &= ~1;
3232 else
3233 {
3234 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3235 htab->elf.sgot->contents + off);
3236 h->got.offset |= 1;
3237 }
3238 }
3239 else
3240 unresolved_reloc = FALSE;
3241 }
3242 else
3243 {
3244 BFD_ASSERT (local_got_offsets != NULL
3245 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3246
3247 off = local_got_offsets[r_symndx];
3248
3249 /* The offset must always be a multiple of 8 on 64-bit and
3250 4 on 32-bit. We use the least significant bit to record
3251 whether we have already processed this entry. */
3252 if ((off & 1) != 0)
3253 off &= ~1;
3254 else
3255 {
3256
3257 if (bfd_link_pic (info))
3258 {
3259 asection *s;
3260 Elf_Internal_Rela outrel;
3261
3262 /* We need to generate a R_SPARC_RELATIVE reloc
3263 for the dynamic linker. */
3264 s = htab->elf.srelgot;
3265 BFD_ASSERT (s != NULL);
3266
3267 outrel.r_offset = (htab->elf.sgot->output_section->vma
3268 + htab->elf.sgot->output_offset
3269 + off);
3270 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3271 0, R_SPARC_RELATIVE);
3272 outrel.r_addend = relocation;
3273 relocation = 0;
3274 sparc_elf_append_rela (output_bfd, s, &outrel);
3275 }
3276
3277 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3278 htab->elf.sgot->contents + off);
3279 local_got_offsets[r_symndx] |= 1;
3280 }
3281 }
3282 relocation = htab->elf.sgot->output_offset + off - got_base;
3283 break;
3284
3285 case R_SPARC_PLT32:
3286 case R_SPARC_PLT64:
3287 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3288 {
3289 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3290 goto r_sparc_plt32;
3291 }
3292 /* Fall through. */
3293
3294 case R_SPARC_WPLT30:
3295 case R_SPARC_HIPLT22:
3296 case R_SPARC_LOPLT10:
3297 case R_SPARC_PCPLT32:
3298 case R_SPARC_PCPLT22:
3299 case R_SPARC_PCPLT10:
3300 r_sparc_wplt30:
3301 /* Relocation is to the entry for this symbol in the
3302 procedure linkage table. */
3303
3304 if (! ABI_64_P (output_bfd))
3305 {
3306 /* The Solaris native assembler will generate a WPLT30 reloc
3307 for a local symbol if you assemble a call from one
3308 section to another when using -K pic. We treat it as
3309 WDISP30. */
3310 if (h == NULL)
3311 break;
3312 }
3313 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3314 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3315 break;
3316 else
3317 {
3318 BFD_ASSERT (h != NULL);
3319 }
3320
3321 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3322 {
3323 /* We didn't make a PLT entry for this symbol. This
3324 happens when statically linking PIC code, or when
3325 using -Bsymbolic. */
3326 break;
3327 }
3328
3329 relocation = (htab->elf.splt->output_section->vma
3330 + htab->elf.splt->output_offset
3331 + h->plt.offset);
3332 unresolved_reloc = FALSE;
3333 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3334 {
3335 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3336 is_plt = TRUE;
3337 goto r_sparc_plt32;
3338 }
3339 break;
3340
3341 case R_SPARC_PC10:
3342 case R_SPARC_PC22:
3343 case R_SPARC_PC_HH22:
3344 case R_SPARC_PC_HM10:
3345 case R_SPARC_PC_LM22:
3346 if (h != NULL
3347 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3348 break;
3349 /* Fall through. */
3350 case R_SPARC_DISP8:
3351 case R_SPARC_DISP16:
3352 case R_SPARC_DISP32:
3353 case R_SPARC_DISP64:
3354 case R_SPARC_WDISP30:
3355 case R_SPARC_WDISP22:
3356 case R_SPARC_WDISP19:
3357 case R_SPARC_WDISP16:
3358 case R_SPARC_WDISP10:
3359 case R_SPARC_8:
3360 case R_SPARC_16:
3361 case R_SPARC_32:
3362 case R_SPARC_HI22:
3363 case R_SPARC_22:
3364 case R_SPARC_13:
3365 case R_SPARC_LO10:
3366 case R_SPARC_UA16:
3367 case R_SPARC_UA32:
3368 case R_SPARC_10:
3369 case R_SPARC_11:
3370 case R_SPARC_64:
3371 case R_SPARC_OLO10:
3372 case R_SPARC_HH22:
3373 case R_SPARC_HM10:
3374 case R_SPARC_LM22:
3375 case R_SPARC_7:
3376 case R_SPARC_5:
3377 case R_SPARC_6:
3378 case R_SPARC_HIX22:
3379 case R_SPARC_LOX10:
3380 case R_SPARC_H44:
3381 case R_SPARC_M44:
3382 case R_SPARC_L44:
3383 case R_SPARC_H34:
3384 case R_SPARC_UA64:
3385 r_sparc_plt32:
3386 if ((input_section->flags & SEC_ALLOC) == 0
3387 || is_vxworks_tls)
3388 break;
3389
3390 if ((bfd_link_pic (info)
3391 && (h == NULL
3392 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3393 || h->root.type != bfd_link_hash_undefweak)
3394 && (! howto->pc_relative
3395 || !SYMBOL_CALLS_LOCAL (info, h)))
3396 || (!bfd_link_pic (info)
3397 && h != NULL
3398 && h->dynindx != -1
3399 && !h->non_got_ref
3400 && ((h->def_dynamic
3401 && !h->def_regular)
3402 || h->root.type == bfd_link_hash_undefweak
3403 || h->root.type == bfd_link_hash_undefined)))
3404 {
3405 Elf_Internal_Rela outrel;
3406 bfd_boolean skip, relocate = FALSE;
3407
3408 /* When generating a shared object, these relocations
3409 are copied into the output file to be resolved at run
3410 time. */
3411
3412 BFD_ASSERT (sreloc != NULL);
3413
3414 skip = FALSE;
3415
3416 outrel.r_offset =
3417 _bfd_elf_section_offset (output_bfd, info, input_section,
3418 rel->r_offset);
3419 if (outrel.r_offset == (bfd_vma) -1)
3420 skip = TRUE;
3421 else if (outrel.r_offset == (bfd_vma) -2)
3422 skip = TRUE, relocate = TRUE;
3423 outrel.r_offset += (input_section->output_section->vma
3424 + input_section->output_offset);
3425
3426 /* Optimize unaligned reloc usage now that we know where
3427 it finally resides. */
3428 switch (r_type)
3429 {
3430 case R_SPARC_16:
3431 if (outrel.r_offset & 1)
3432 r_type = R_SPARC_UA16;
3433 break;
3434 case R_SPARC_UA16:
3435 if (!(outrel.r_offset & 1))
3436 r_type = R_SPARC_16;
3437 break;
3438 case R_SPARC_32:
3439 if (outrel.r_offset & 3)
3440 r_type = R_SPARC_UA32;
3441 break;
3442 case R_SPARC_UA32:
3443 if (!(outrel.r_offset & 3))
3444 r_type = R_SPARC_32;
3445 break;
3446 case R_SPARC_64:
3447 if (outrel.r_offset & 7)
3448 r_type = R_SPARC_UA64;
3449 break;
3450 case R_SPARC_UA64:
3451 if (!(outrel.r_offset & 7))
3452 r_type = R_SPARC_64;
3453 break;
3454 case R_SPARC_DISP8:
3455 case R_SPARC_DISP16:
3456 case R_SPARC_DISP32:
3457 case R_SPARC_DISP64:
3458 /* If the symbol is not dynamic, we should not keep
3459 a dynamic relocation. But an .rela.* slot has been
3460 allocated for it, output R_SPARC_NONE.
3461 FIXME: Add code tracking needed dynamic relocs as
3462 e.g. i386 has. */
3463 if (h->dynindx == -1)
3464 skip = TRUE, relocate = TRUE;
3465 break;
3466 }
3467
3468 if (skip)
3469 memset (&outrel, 0, sizeof outrel);
3470 /* h->dynindx may be -1 if the symbol was marked to
3471 become local. */
3472 else if (h != NULL
3473 && h->dynindx != -1
3474 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3475 || !bfd_link_pic (info)
3476 || !SYMBOLIC_BIND (info, h)
3477 || !h->def_regular))
3478 {
3479 BFD_ASSERT (h->dynindx != -1);
3480 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3481 outrel.r_addend = rel->r_addend;
3482 }
3483 else
3484 {
3485 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3486 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3487 {
3488 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3489 0, R_SPARC_RELATIVE);
3490 outrel.r_addend = relocation + rel->r_addend;
3491 }
3492 else
3493 {
3494 long indx;
3495
3496 outrel.r_addend = relocation + rel->r_addend;
3497
3498 if (is_plt)
3499 sec = htab->elf.splt;
3500
3501 if (bfd_is_abs_section (sec))
3502 indx = 0;
3503 else if (sec == NULL || sec->owner == NULL)
3504 {
3505 bfd_set_error (bfd_error_bad_value);
3506 return FALSE;
3507 }
3508 else
3509 {
3510 asection *osec;
3511
3512 /* We are turning this relocation into one
3513 against a section symbol. It would be
3514 proper to subtract the symbol's value,
3515 osec->vma, from the emitted reloc addend,
3516 but ld.so expects buggy relocs. */
3517 osec = sec->output_section;
3518 indx = elf_section_data (osec)->dynindx;
3519
3520 if (indx == 0)
3521 {
3522 osec = htab->elf.text_index_section;
3523 indx = elf_section_data (osec)->dynindx;
3524 }
3525
3526 /* FIXME: we really should be able to link non-pic
3527 shared libraries. */
3528 if (indx == 0)
3529 {
3530 BFD_FAIL ();
3531 _bfd_error_handler
3532 (_("%B: probably compiled without -fPIC?"),
3533 input_bfd);
3534 bfd_set_error (bfd_error_bad_value);
3535 return FALSE;
3536 }
3537 }
3538
3539 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3540 r_type);
3541 }
3542 }
3543
3544 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3545
3546 /* This reloc will be computed at runtime, so there's no
3547 need to do anything now. */
3548 if (! relocate)
3549 continue;
3550 }
3551 break;
3552
3553 case R_SPARC_TLS_GD_HI22:
3554 if (! ABI_64_P (input_bfd)
3555 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3556 {
3557 /* R_SPARC_REV32 used the same reloc number as
3558 R_SPARC_TLS_GD_HI22. */
3559 r_type = R_SPARC_REV32;
3560 break;
3561 }
3562 /* Fall through */
3563
3564 case R_SPARC_TLS_GD_LO10:
3565 case R_SPARC_TLS_IE_HI22:
3566 case R_SPARC_TLS_IE_LO10:
3567 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3568 tls_type = GOT_UNKNOWN;
3569 if (h == NULL && local_got_offsets)
3570 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3571 else if (h != NULL)
3572 {
3573 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3574 if (!bfd_link_pic (info)
3575 && h->dynindx == -1
3576 && tls_type == GOT_TLS_IE)
3577 switch (SPARC_ELF_R_TYPE (rel->r_info))
3578 {
3579 case R_SPARC_TLS_GD_HI22:
3580 case R_SPARC_TLS_IE_HI22:
3581 r_type = R_SPARC_TLS_LE_HIX22;
3582 break;
3583 default:
3584 r_type = R_SPARC_TLS_LE_LOX10;
3585 break;
3586 }
3587 }
3588 if (tls_type == GOT_TLS_IE)
3589 switch (r_type)
3590 {
3591 case R_SPARC_TLS_GD_HI22:
3592 r_type = R_SPARC_TLS_IE_HI22;
3593 break;
3594 case R_SPARC_TLS_GD_LO10:
3595 r_type = R_SPARC_TLS_IE_LO10;
3596 break;
3597 }
3598
3599 if (r_type == R_SPARC_TLS_LE_HIX22)
3600 {
3601 relocation = tpoff (info, relocation);
3602 break;
3603 }
3604 if (r_type == R_SPARC_TLS_LE_LOX10)
3605 {
3606 /* Change add into xor. */
3607 relocation = tpoff (info, relocation);
3608 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3609 contents + rel->r_offset)
3610 | 0x80182000), contents + rel->r_offset);
3611 break;
3612 }
3613
3614 if (h != NULL)
3615 {
3616 off = h->got.offset;
3617 h->got.offset |= 1;
3618 }
3619 else
3620 {
3621 BFD_ASSERT (local_got_offsets != NULL);
3622 off = local_got_offsets[r_symndx];
3623 local_got_offsets[r_symndx] |= 1;
3624 }
3625
3626 r_sparc_tlsldm:
3627 if (htab->elf.sgot == NULL)
3628 abort ();
3629
3630 if ((off & 1) != 0)
3631 off &= ~1;
3632 else
3633 {
3634 Elf_Internal_Rela outrel;
3635 int dr_type, indx;
3636
3637 if (htab->elf.srelgot == NULL)
3638 abort ();
3639
3640 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3641 htab->elf.sgot->contents + off);
3642 outrel.r_offset = (htab->elf.sgot->output_section->vma
3643 + htab->elf.sgot->output_offset + off);
3644 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3645 if (r_type == R_SPARC_TLS_IE_HI22
3646 || r_type == R_SPARC_TLS_IE_LO10)
3647 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3648 else
3649 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3650 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3651 outrel.r_addend = relocation - dtpoff_base (info);
3652 else
3653 outrel.r_addend = 0;
3654 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3655 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3656
3657 if (r_type == R_SPARC_TLS_GD_HI22
3658 || r_type == R_SPARC_TLS_GD_LO10)
3659 {
3660 if (indx == 0)
3661 {
3662 BFD_ASSERT (! unresolved_reloc);
3663 SPARC_ELF_PUT_WORD (htab, output_bfd,
3664 relocation - dtpoff_base (info),
3665 (htab->elf.sgot->contents + off
3666 + SPARC_ELF_WORD_BYTES (htab)));
3667 }
3668 else
3669 {
3670 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3671 (htab->elf.sgot->contents + off
3672 + SPARC_ELF_WORD_BYTES (htab)));
3673 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3674 SPARC_ELF_DTPOFF_RELOC (htab));
3675 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3676 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3677 &outrel);
3678 }
3679 }
3680 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3681 {
3682 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3683 (htab->elf.sgot->contents + off
3684 + SPARC_ELF_WORD_BYTES (htab)));
3685 }
3686 }
3687
3688 if (off >= (bfd_vma) -2)
3689 abort ();
3690
3691 relocation = htab->elf.sgot->output_offset + off - got_base;
3692 unresolved_reloc = FALSE;
3693 howto = _bfd_sparc_elf_howto_table + r_type;
3694 break;
3695
3696 case R_SPARC_TLS_LDM_HI22:
3697 case R_SPARC_TLS_LDM_LO10:
3698 if (! bfd_link_pic (info))
3699 {
3700 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3701 continue;
3702 }
3703 off = htab->tls_ldm_got.offset;
3704 htab->tls_ldm_got.offset |= 1;
3705 goto r_sparc_tlsldm;
3706
3707 case R_SPARC_TLS_LDO_HIX22:
3708 case R_SPARC_TLS_LDO_LOX10:
3709 if (bfd_link_pic (info))
3710 {
3711 relocation -= dtpoff_base (info);
3712 break;
3713 }
3714
3715 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3716 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3717 /* Fall through. */
3718
3719 case R_SPARC_TLS_LE_HIX22:
3720 case R_SPARC_TLS_LE_LOX10:
3721 if (bfd_link_pic (info))
3722 {
3723 Elf_Internal_Rela outrel;
3724 bfd_boolean skip;
3725
3726 BFD_ASSERT (sreloc != NULL);
3727 skip = FALSE;
3728 outrel.r_offset =
3729 _bfd_elf_section_offset (output_bfd, info, input_section,
3730 rel->r_offset);
3731 if (outrel.r_offset == (bfd_vma) -1)
3732 skip = TRUE;
3733 else if (outrel.r_offset == (bfd_vma) -2)
3734 skip = TRUE;
3735 outrel.r_offset += (input_section->output_section->vma
3736 + input_section->output_offset);
3737 if (skip)
3738 memset (&outrel, 0, sizeof outrel);
3739 else
3740 {
3741 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3742 outrel.r_addend = relocation - dtpoff_base (info)
3743 + rel->r_addend;
3744 }
3745
3746 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3747 continue;
3748 }
3749 relocation = tpoff (info, relocation);
3750 break;
3751
3752 case R_SPARC_TLS_LDM_CALL:
3753 if (! bfd_link_pic (info))
3754 {
3755 /* mov %g0, %o0 */
3756 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3757 continue;
3758 }
3759 /* Fall through */
3760
3761 case R_SPARC_TLS_GD_CALL:
3762 tls_type = GOT_UNKNOWN;
3763 if (h == NULL && local_got_offsets)
3764 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3765 else if (h != NULL)
3766 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3767 if (! bfd_link_pic (info)
3768 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3769 {
3770 Elf_Internal_Rela *rel2;
3771 bfd_vma insn;
3772
3773 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3774 {
3775 /* GD -> LE */
3776 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3777 continue;
3778 }
3779
3780 /* GD -> IE */
3781 if (rel + 1 < relend
3782 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3783 && rel[1].r_offset == rel->r_offset + 4
3784 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3785 && (((insn = bfd_get_32 (input_bfd,
3786 contents + rel[1].r_offset))
3787 >> 25) & 0x1f) == 8)
3788 {
3789 /* We have
3790 call __tls_get_addr, %tgd_call(foo)
3791 add %reg1, %reg2, %o0, %tgd_add(foo)
3792 and change it into IE:
3793 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3794 add %g7, %o0, %o0, %tie_add(foo).
3795 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3796 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3797 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3798 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3799 contents + rel->r_offset);
3800 bfd_put_32 (output_bfd, 0x9001c008,
3801 contents + rel->r_offset + 4);
3802 rel++;
3803 continue;
3804 }
3805
3806 /* We cannot just overwrite the delay slot instruction,
3807 as it might be what puts the %o0 argument to
3808 __tls_get_addr into place. So we have to transpose
3809 the delay slot with the add we patch in. */
3810 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3811 bfd_put_32 (output_bfd, insn,
3812 contents + rel->r_offset);
3813 bfd_put_32 (output_bfd, 0x9001c008,
3814 contents + rel->r_offset + 4);
3815
3816 rel2 = rel;
3817 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3818 rel->r_offset + 4))
3819 != NULL)
3820 {
3821 /* If the instruction we moved has a relocation attached to
3822 it, adjust the offset so that it will apply to the correct
3823 instruction. */
3824 rel2->r_offset -= 4;
3825 }
3826 continue;
3827 }
3828
3829 h = (struct elf_link_hash_entry *)
3830 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3831 FALSE, TRUE);
3832 BFD_ASSERT (h != NULL);
3833 r_type = R_SPARC_WPLT30;
3834 howto = _bfd_sparc_elf_howto_table + r_type;
3835 goto r_sparc_wplt30;
3836
3837 case R_SPARC_TLS_GD_ADD:
3838 tls_type = GOT_UNKNOWN;
3839 if (h == NULL && local_got_offsets)
3840 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3841 else if (h != NULL)
3842 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3843 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE)
3844 {
3845 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3846 changed into IE:
3847 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3848 or LE:
3849 add %g7, %reg2, %reg3. */
3850 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3851 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info))
3852 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3853 else
3854 relocation = (insn & ~0x7c000) | 0x1c000;
3855 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3856 }
3857 continue;
3858
3859 case R_SPARC_TLS_LDM_ADD:
3860 if (! bfd_link_pic (info))
3861 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3862 continue;
3863
3864 case R_SPARC_TLS_LDO_ADD:
3865 if (! bfd_link_pic (info))
3866 {
3867 /* Change rs1 into %g7. */
3868 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3869 insn = (insn & ~0x7c000) | 0x1c000;
3870 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3871 }
3872 continue;
3873
3874 case R_SPARC_TLS_IE_LD:
3875 case R_SPARC_TLS_IE_LDX:
3876 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3877 {
3878 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3879 int rs2 = insn & 0x1f;
3880 int rd = (insn >> 25) & 0x1f;
3881
3882 if (rs2 == rd)
3883 relocation = SPARC_NOP;
3884 else
3885 relocation = 0x80100000 | (insn & 0x3e00001f);
3886 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3887 }
3888 continue;
3889
3890 case R_SPARC_TLS_IE_ADD:
3891 /* Totally useless relocation. */
3892 continue;
3893
3894 case R_SPARC_TLS_DTPOFF32:
3895 case R_SPARC_TLS_DTPOFF64:
3896 relocation -= dtpoff_base (info);
3897 break;
3898
3899 default:
3900 break;
3901 }
3902
3903 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3904 because such sections are not SEC_ALLOC and thus ld.so will
3905 not process them. */
3906 if (unresolved_reloc
3907 && !((input_section->flags & SEC_DEBUGGING) != 0
3908 && h->def_dynamic)
3909 && _bfd_elf_section_offset (output_bfd, info, input_section,
3910 rel->r_offset) != (bfd_vma) -1)
3911 _bfd_error_handler
3912 /* xgettext:c-format */
3913 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3914 input_bfd,
3915 input_section,
3916 (long) rel->r_offset,
3917 howto->name,
3918 h->root.root.string);
3919
3920 r = bfd_reloc_continue;
3921 if (r_type == R_SPARC_OLO10)
3922 {
3923 bfd_vma x;
3924
3925 if (! ABI_64_P (output_bfd))
3926 abort ();
3927
3928 relocation += rel->r_addend;
3929 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3930
3931 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3932 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3933 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3934
3935 r = bfd_check_overflow (howto->complain_on_overflow,
3936 howto->bitsize, howto->rightshift,
3937 bfd_arch_bits_per_address (input_bfd),
3938 relocation);
3939 }
3940 else if (r_type == R_SPARC_WDISP16)
3941 {
3942 bfd_vma x;
3943
3944 relocation += rel->r_addend;
3945 relocation -= (input_section->output_section->vma
3946 + input_section->output_offset);
3947 relocation -= rel->r_offset;
3948
3949 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3950 x |= ((((relocation >> 2) & 0xc000) << 6)
3951 | ((relocation >> 2) & 0x3fff));
3952 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3953
3954 r = bfd_check_overflow (howto->complain_on_overflow,
3955 howto->bitsize, howto->rightshift,
3956 bfd_arch_bits_per_address (input_bfd),
3957 relocation);
3958 }
3959 else if (r_type == R_SPARC_WDISP10)
3960 {
3961 bfd_vma x;
3962
3963 relocation += rel->r_addend;
3964 relocation -= (input_section->output_section->vma
3965 + input_section->output_offset);
3966 relocation -= rel->r_offset;
3967
3968 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3969 x |= ((((relocation >> 2) & 0x300) << 11)
3970 | (((relocation >> 2) & 0xff) << 5));
3971 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3972
3973 r = bfd_check_overflow (howto->complain_on_overflow,
3974 howto->bitsize, howto->rightshift,
3975 bfd_arch_bits_per_address (input_bfd),
3976 relocation);
3977 }
3978 else if (r_type == R_SPARC_REV32)
3979 {
3980 bfd_vma x;
3981
3982 relocation = relocation + rel->r_addend;
3983
3984 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3985 x = x + relocation;
3986 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3987 r = bfd_reloc_ok;
3988 }
3989 else if (r_type == R_SPARC_TLS_LDO_HIX22
3990 || r_type == R_SPARC_TLS_LE_HIX22)
3991 {
3992 bfd_vma x;
3993
3994 relocation += rel->r_addend;
3995 if (r_type == R_SPARC_TLS_LE_HIX22)
3996 relocation ^= MINUS_ONE;
3997
3998 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3999 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4000 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4001 r = bfd_reloc_ok;
4002 }
4003 else if (r_type == R_SPARC_TLS_LDO_LOX10
4004 || r_type == R_SPARC_TLS_LE_LOX10)
4005 {
4006 bfd_vma x;
4007
4008 relocation += rel->r_addend;
4009 relocation &= 0x3ff;
4010 if (r_type == R_SPARC_TLS_LE_LOX10)
4011 relocation |= 0x1c00;
4012
4013 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4014 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4015 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4016
4017 r = bfd_reloc_ok;
4018 }
4019 else if (r_type == R_SPARC_HIX22
4020 || r_type == R_SPARC_GOTDATA_HIX22
4021 || r_type == R_SPARC_GOTDATA_OP_HIX22)
4022 {
4023 bfd_vma x;
4024
4025 relocation += rel->r_addend;
4026 if (r_type == R_SPARC_HIX22
4027 || (bfd_signed_vma) relocation < 0)
4028 relocation = relocation ^ MINUS_ONE;
4029
4030 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4031 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4032 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4033
4034 r = bfd_check_overflow (howto->complain_on_overflow,
4035 howto->bitsize, howto->rightshift,
4036 bfd_arch_bits_per_address (input_bfd),
4037 relocation);
4038 }
4039 else if (r_type == R_SPARC_LOX10
4040 || r_type == R_SPARC_GOTDATA_LOX10
4041 || r_type == R_SPARC_GOTDATA_OP_LOX10)
4042 {
4043 bfd_vma x;
4044
4045 relocation += rel->r_addend;
4046 if (r_type == R_SPARC_LOX10
4047 || (bfd_signed_vma) relocation < 0)
4048 relocation = (relocation & 0x3ff) | 0x1c00;
4049 else
4050 relocation = (relocation & 0x3ff);
4051
4052 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4053 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4054 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4055
4056 r = bfd_reloc_ok;
4057 }
4058 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4059 && sec_do_relax (input_section)
4060 && rel->r_offset + 4 < input_section->size)
4061 {
4062 #define G0 0
4063 #define O7 15
4064 #define XCC (2 << 20)
4065 #define COND(x) (((x)&0xf)<<25)
4066 #define CONDA COND(0x8)
4067 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4068 #define INSN_BA (F2(0,2) | CONDA)
4069 #define INSN_OR F3(2, 0x2, 0)
4070 #define INSN_NOP F2(0,4)
4071
4072 bfd_vma x, y;
4073
4074 /* If the instruction is a call with either:
4075 restore
4076 arithmetic instruction with rd == %o7
4077 where rs1 != %o7 and rs2 if it is register != %o7
4078 then we can optimize if the call destination is near
4079 by changing the call into a branch always. */
4080 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4081 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4082 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4083 {
4084 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4085 || ((y & OP3(0x28)) == 0 /* arithmetic */
4086 && (y & RD(~0)) == RD(O7)))
4087 && (y & RS1(~0)) != RS1(O7)
4088 && ((y & F3I(~0))
4089 || (y & RS2(~0)) != RS2(O7)))
4090 {
4091 bfd_vma reloc;
4092
4093 reloc = relocation + rel->r_addend - rel->r_offset;
4094 reloc -= (input_section->output_section->vma
4095 + input_section->output_offset);
4096
4097 /* Ensure the branch fits into simm22. */
4098 if ((reloc & 3) == 0
4099 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4100 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4101 {
4102 reloc >>= 2;
4103
4104 /* Check whether it fits into simm19. */
4105 if (((reloc & 0x3c0000) == 0
4106 || (reloc & 0x3c0000) == 0x3c0000)
4107 && (ABI_64_P (output_bfd)
4108 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4109 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4110 else
4111 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4112 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4113 r = bfd_reloc_ok;
4114 if (rel->r_offset >= 4
4115 && (y & (0xffffffff ^ RS1(~0)))
4116 == (INSN_OR | RD(O7) | RS2(G0)))
4117 {
4118 bfd_vma z;
4119 unsigned int reg;
4120
4121 z = bfd_get_32 (input_bfd,
4122 contents + rel->r_offset - 4);
4123 if ((z & (0xffffffff ^ RD(~0)))
4124 != (INSN_OR | RS1(O7) | RS2(G0)))
4125 break;
4126
4127 /* The sequence was
4128 or %o7, %g0, %rN
4129 call foo
4130 or %rN, %g0, %o7
4131
4132 If call foo was replaced with ba, replace
4133 or %rN, %g0, %o7 with nop. */
4134
4135 reg = (y & RS1(~0)) >> 14;
4136 if (reg != ((z & RD(~0)) >> 25)
4137 || reg == G0 || reg == O7)
4138 break;
4139
4140 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4141 contents + rel->r_offset + 4);
4142 }
4143
4144 }
4145 }
4146 }
4147 }
4148
4149 if (r == bfd_reloc_continue)
4150 {
4151 do_relocation:
4152 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4153 contents, rel->r_offset,
4154 relocation, rel->r_addend);
4155 }
4156 if (r != bfd_reloc_ok)
4157 {
4158 switch (r)
4159 {
4160 default:
4161 case bfd_reloc_outofrange:
4162 abort ();
4163 case bfd_reloc_overflow:
4164 {
4165 const char *name;
4166
4167 /* The Solaris native linker silently disregards overflows.
4168 We don't, but this breaks stabs debugging info, whose
4169 relocations are only 32-bits wide. Ignore overflows in
4170 this case and also for discarded entries. */
4171 if ((r_type == R_SPARC_32
4172 || r_type == R_SPARC_UA32
4173 || r_type == R_SPARC_DISP32)
4174 && (((input_section->flags & SEC_DEBUGGING) != 0
4175 && strcmp (bfd_section_name (input_bfd,
4176 input_section),
4177 ".stab") == 0)
4178 || _bfd_elf_section_offset (output_bfd, info,
4179 input_section,
4180 rel->r_offset)
4181 == (bfd_vma)-1))
4182 break;
4183
4184 if (h != NULL)
4185 {
4186 /* Assume this is a call protected by other code that
4187 detect the symbol is undefined. If this is the case,
4188 we can safely ignore the overflow. If not, the
4189 program is hosed anyway, and a little warning isn't
4190 going to help. */
4191 if (h->root.type == bfd_link_hash_undefweak
4192 && howto->pc_relative)
4193 break;
4194
4195 name = NULL;
4196 }
4197 else
4198 {
4199 name = bfd_elf_string_from_elf_section (input_bfd,
4200 symtab_hdr->sh_link,
4201 sym->st_name);
4202 if (name == NULL)
4203 return FALSE;
4204 if (*name == '\0')
4205 name = bfd_section_name (input_bfd, sec);
4206 }
4207 (*info->callbacks->reloc_overflow)
4208 (info, (h ? &h->root : NULL), name, howto->name,
4209 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4210 }
4211 break;
4212 }
4213 }
4214 }
4215
4216 return TRUE;
4217 }
4218
4219 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4220 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4221 is the offset of the associated .got.plt entry from
4222 _GLOBAL_OFFSET_TABLE_. */
4223
4224 static void
4225 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4226 bfd_vma plt_offset, bfd_vma plt_index,
4227 bfd_vma got_offset)
4228 {
4229 bfd_vma got_base;
4230 const bfd_vma *plt_entry;
4231 struct _bfd_sparc_elf_link_hash_table *htab;
4232 bfd_byte *loc;
4233 Elf_Internal_Rela rela;
4234
4235 htab = _bfd_sparc_elf_hash_table (info);
4236 BFD_ASSERT (htab != NULL);
4237
4238 if (bfd_link_pic (info))
4239 {
4240 plt_entry = sparc_vxworks_shared_plt_entry;
4241 got_base = 0;
4242 }
4243 else
4244 {
4245 plt_entry = sparc_vxworks_exec_plt_entry;
4246 got_base = (htab->elf.hgot->root.u.def.value
4247 + htab->elf.hgot->root.u.def.section->output_offset
4248 + htab->elf.hgot->root.u.def.section->output_section->vma);
4249 }
4250
4251 /* Fill in the entry in the procedure linkage table. */
4252 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4253 htab->elf.splt->contents + plt_offset);
4254 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4255 htab->elf.splt->contents + plt_offset + 4);
4256 bfd_put_32 (output_bfd, plt_entry[2],
4257 htab->elf.splt->contents + plt_offset + 8);
4258 bfd_put_32 (output_bfd, plt_entry[3],
4259 htab->elf.splt->contents + plt_offset + 12);
4260 bfd_put_32 (output_bfd, plt_entry[4],
4261 htab->elf.splt->contents + plt_offset + 16);
4262 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4263 htab->elf.splt->contents + plt_offset + 20);
4264 /* PC-relative displacement for a branch to the start of
4265 the PLT section. */
4266 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4267 & 0x003fffff),
4268 htab->elf.splt->contents + plt_offset + 24);
4269 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4270 htab->elf.splt->contents + plt_offset + 28);
4271
4272 /* Fill in the .got.plt entry, pointing initially at the
4273 second half of the PLT entry. */
4274 BFD_ASSERT (htab->elf.sgotplt != NULL);
4275 bfd_put_32 (output_bfd,
4276 htab->elf.splt->output_section->vma
4277 + htab->elf.splt->output_offset
4278 + plt_offset + 20,
4279 htab->elf.sgotplt->contents + got_offset);
4280
4281 /* Add relocations to .rela.plt.unloaded. */
4282 if (!bfd_link_pic (info))
4283 {
4284 loc = (htab->srelplt2->contents
4285 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4286
4287 /* Relocate the initial sethi. */
4288 rela.r_offset = (htab->elf.splt->output_section->vma
4289 + htab->elf.splt->output_offset
4290 + plt_offset);
4291 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4292 rela.r_addend = got_offset;
4293 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4294 loc += sizeof (Elf32_External_Rela);
4295
4296 /* Likewise the following or. */
4297 rela.r_offset += 4;
4298 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4299 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4300 loc += sizeof (Elf32_External_Rela);
4301
4302 /* Relocate the .got.plt entry. */
4303 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4304 + htab->elf.sgotplt->output_offset
4305 + got_offset);
4306 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4307 rela.r_addend = plt_offset + 20;
4308 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4309 }
4310 }
4311
4312 /* Finish up dynamic symbol handling. We set the contents of various
4313 dynamic sections here. */
4314
4315 bfd_boolean
4316 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4317 struct bfd_link_info *info,
4318 struct elf_link_hash_entry *h,
4319 Elf_Internal_Sym *sym)
4320 {
4321 struct _bfd_sparc_elf_link_hash_table *htab;
4322 const struct elf_backend_data *bed;
4323
4324 htab = _bfd_sparc_elf_hash_table (info);
4325 BFD_ASSERT (htab != NULL);
4326 bed = get_elf_backend_data (output_bfd);
4327
4328 if (h->plt.offset != (bfd_vma) -1)
4329 {
4330 asection *splt;
4331 asection *srela;
4332 Elf_Internal_Rela rela;
4333 bfd_byte *loc;
4334 bfd_vma r_offset, got_offset;
4335 int rela_index;
4336
4337 /* When building a static executable, use .iplt and
4338 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4339 if (htab->elf.splt != NULL)
4340 {
4341 splt = htab->elf.splt;
4342 srela = htab->elf.srelplt;
4343 }
4344 else
4345 {
4346 splt = htab->elf.iplt;
4347 srela = htab->elf.irelplt;
4348 }
4349
4350 if (splt == NULL || srela == NULL)
4351 abort ();
4352
4353 /* Fill in the entry in the .rela.plt section. */
4354 if (htab->is_vxworks)
4355 {
4356 /* Work out the index of this PLT entry. */
4357 rela_index = ((h->plt.offset - htab->plt_header_size)
4358 / htab->plt_entry_size);
4359
4360 /* Calculate the offset of the associated .got.plt entry.
4361 The first three entries are reserved. */
4362 got_offset = (rela_index + 3) * 4;
4363
4364 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4365 rela_index, got_offset);
4366
4367
4368 /* On VxWorks, the relocation points to the .got.plt entry,
4369 not the .plt entry. */
4370 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4371 + htab->elf.sgotplt->output_offset
4372 + got_offset);
4373 rela.r_addend = 0;
4374 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4375 R_SPARC_JMP_SLOT);
4376 }
4377 else
4378 {
4379 bfd_boolean ifunc = FALSE;
4380
4381 /* Fill in the entry in the procedure linkage table. */
4382 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4383 h->plt.offset, splt->size,
4384 &r_offset);
4385
4386 if (h == NULL
4387 || h->dynindx == -1
4388 || ((bfd_link_executable (info)
4389 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4390 && h->def_regular
4391 && h->type == STT_GNU_IFUNC))
4392 {
4393 ifunc = TRUE;
4394 BFD_ASSERT (h == NULL
4395 || (h->type == STT_GNU_IFUNC
4396 && h->def_regular
4397 && (h->root.type == bfd_link_hash_defined
4398 || h->root.type == bfd_link_hash_defweak)));
4399 }
4400
4401 rela.r_offset = r_offset
4402 + (splt->output_section->vma + splt->output_offset);
4403 if (ABI_64_P (output_bfd)
4404 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4405 {
4406 if (ifunc)
4407 {
4408 rela.r_addend = (h->root.u.def.section->output_section->vma
4409 + h->root.u.def.section->output_offset
4410 + h->root.u.def.value);
4411 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4412 R_SPARC_IRELATIVE);
4413 }
4414 else
4415 {
4416 rela.r_addend = (-(h->plt.offset + 4)
4417 - splt->output_section->vma
4418 - splt->output_offset);
4419 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4420 R_SPARC_JMP_SLOT);
4421 }
4422 }
4423 else
4424 {
4425 if (ifunc)
4426 {
4427 rela.r_addend = (h->root.u.def.section->output_section->vma
4428 + h->root.u.def.section->output_offset
4429 + h->root.u.def.value);
4430 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4431 R_SPARC_JMP_IREL);
4432 }
4433 else
4434 {
4435 rela.r_addend = 0;
4436 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4437 R_SPARC_JMP_SLOT);
4438 }
4439 }
4440 }
4441
4442 /* Adjust for the first 4 reserved elements in the .plt section
4443 when setting the offset in the .rela.plt section.
4444 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4445 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4446
4447 loc = srela->contents;
4448 loc += rela_index * bed->s->sizeof_rela;
4449 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4450
4451 if (!h->def_regular)
4452 {
4453 /* Mark the symbol as undefined, rather than as defined in
4454 the .plt section. Leave the value alone. */
4455 sym->st_shndx = SHN_UNDEF;
4456 /* If the symbol is weak, we do need to clear the value.
4457 Otherwise, the PLT entry would provide a definition for
4458 the symbol even if the symbol wasn't defined anywhere,
4459 and so the symbol would never be NULL. */
4460 if (!h->ref_regular_nonweak)
4461 sym->st_value = 0;
4462 }
4463 }
4464
4465 if (h->got.offset != (bfd_vma) -1
4466 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4467 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4468 {
4469 asection *sgot;
4470 asection *srela;
4471 Elf_Internal_Rela rela;
4472
4473 /* This symbol has an entry in the GOT. Set it up. */
4474
4475 sgot = htab->elf.sgot;
4476 srela = htab->elf.srelgot;
4477 BFD_ASSERT (sgot != NULL && srela != NULL);
4478
4479 rela.r_offset = (sgot->output_section->vma
4480 + sgot->output_offset
4481 + (h->got.offset &~ (bfd_vma) 1));
4482
4483 /* If this is a -Bsymbolic link, and the symbol is defined
4484 locally, we just want to emit a RELATIVE reloc. Likewise if
4485 the symbol was forced to be local because of a version file.
4486 The entry in the global offset table will already have been
4487 initialized in the relocate_section function. */
4488 if (! bfd_link_pic (info)
4489 && h->type == STT_GNU_IFUNC
4490 && h->def_regular)
4491 {
4492 asection *plt;
4493
4494 /* We load the GOT entry with the PLT entry. */
4495 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4496 SPARC_ELF_PUT_WORD (htab, output_bfd,
4497 (plt->output_section->vma
4498 + plt->output_offset + h->plt.offset),
4499 htab->elf.sgot->contents
4500 + (h->got.offset & ~(bfd_vma) 1));
4501 return TRUE;
4502 }
4503 else if (bfd_link_pic (info)
4504 && SYMBOL_REFERENCES_LOCAL (info, h))
4505 {
4506 asection *sec = h->root.u.def.section;
4507 if (h->type == STT_GNU_IFUNC)
4508 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4509 else
4510 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4511 rela.r_addend = (h->root.u.def.value
4512 + sec->output_section->vma
4513 + sec->output_offset);
4514 }
4515 else
4516 {
4517 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4518 rela.r_addend = 0;
4519 }
4520
4521 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4522 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4523 sparc_elf_append_rela (output_bfd, srela, &rela);
4524 }
4525
4526 if (h->needs_copy)
4527 {
4528 asection *s;
4529 Elf_Internal_Rela rela;
4530
4531 /* This symbols needs a copy reloc. Set it up. */
4532 BFD_ASSERT (h->dynindx != -1);
4533
4534 s = bfd_get_linker_section (h->root.u.def.section->owner,
4535 ".rela.bss");
4536 BFD_ASSERT (s != NULL);
4537
4538 rela.r_offset = (h->root.u.def.value
4539 + h->root.u.def.section->output_section->vma
4540 + h->root.u.def.section->output_offset);
4541 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4542 rela.r_addend = 0;
4543 sparc_elf_append_rela (output_bfd, s, &rela);
4544 }
4545
4546 /* Mark some specially defined symbols as absolute. On VxWorks,
4547 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4548 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4549 if (sym != NULL
4550 && (h == htab->elf.hdynamic
4551 || (!htab->is_vxworks
4552 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4553 sym->st_shndx = SHN_ABS;
4554
4555 return TRUE;
4556 }
4557
4558 /* Finish up the dynamic sections. */
4559
4560 static bfd_boolean
4561 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4562 bfd *dynobj, asection *sdyn,
4563 asection *splt ATTRIBUTE_UNUSED)
4564 {
4565 struct _bfd_sparc_elf_link_hash_table *htab;
4566 const struct elf_backend_data *bed;
4567 bfd_byte *dyncon, *dynconend;
4568 size_t dynsize;
4569 int stt_regidx = -1;
4570 bfd_boolean abi_64_p;
4571
4572 htab = _bfd_sparc_elf_hash_table (info);
4573 BFD_ASSERT (htab != NULL);
4574 bed = get_elf_backend_data (output_bfd);
4575 dynsize = bed->s->sizeof_dyn;
4576 dynconend = sdyn->contents + sdyn->size;
4577 abi_64_p = ABI_64_P (output_bfd);
4578 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4579 {
4580 Elf_Internal_Dyn dyn;
4581 const char *name;
4582 bfd_boolean size;
4583
4584 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4585
4586 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4587 {
4588 /* On VxWorks, DT_RELASZ should not include the relocations
4589 in .rela.plt. */
4590 if (htab->elf.srelplt)
4591 {
4592 dyn.d_un.d_val -= htab->elf.srelplt->size;
4593 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4594 }
4595 }
4596 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4597 {
4598 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4599 not to the start of the PLT. */
4600 if (htab->elf.sgotplt)
4601 {
4602 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4603 + htab->elf.sgotplt->output_offset);
4604 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4605 }
4606 }
4607 else if (htab->is_vxworks
4608 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4609 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4610 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4611 {
4612 if (stt_regidx == -1)
4613 {
4614 stt_regidx =
4615 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4616 if (stt_regidx == -1)
4617 return FALSE;
4618 }
4619 dyn.d_un.d_val = stt_regidx++;
4620 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4621 }
4622 else
4623 {
4624 switch (dyn.d_tag)
4625 {
4626 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4627 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4628 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4629 default: name = NULL; size = FALSE; break;
4630 }
4631
4632 if (name != NULL)
4633 {
4634 asection *s;
4635
4636 s = bfd_get_linker_section (dynobj, name);
4637 if (s == NULL)
4638 dyn.d_un.d_val = 0;
4639 else
4640 {
4641 if (! size)
4642 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4643 else
4644 dyn.d_un.d_val = s->size;
4645 }
4646 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4647 }
4648 }
4649 }
4650 return TRUE;
4651 }
4652
4653 /* Install the first PLT entry in a VxWorks executable and make sure that
4654 .rela.plt.unloaded relocations have the correct symbol indexes. */
4655
4656 static void
4657 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4658 {
4659 struct _bfd_sparc_elf_link_hash_table *htab;
4660 Elf_Internal_Rela rela;
4661 bfd_vma got_base;
4662 bfd_byte *loc;
4663
4664 htab = _bfd_sparc_elf_hash_table (info);
4665 BFD_ASSERT (htab != NULL);
4666
4667 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4668 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4669 + htab->elf.hgot->root.u.def.section->output_offset
4670 + htab->elf.hgot->root.u.def.value);
4671
4672 /* Install the initial PLT entry. */
4673 bfd_put_32 (output_bfd,
4674 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4675 htab->elf.splt->contents);
4676 bfd_put_32 (output_bfd,
4677 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4678 htab->elf.splt->contents + 4);
4679 bfd_put_32 (output_bfd,
4680 sparc_vxworks_exec_plt0_entry[2],
4681 htab->elf.splt->contents + 8);
4682 bfd_put_32 (output_bfd,
4683 sparc_vxworks_exec_plt0_entry[3],
4684 htab->elf.splt->contents + 12);
4685 bfd_put_32 (output_bfd,
4686 sparc_vxworks_exec_plt0_entry[4],
4687 htab->elf.splt->contents + 16);
4688
4689 loc = htab->srelplt2->contents;
4690
4691 /* Add an unloaded relocation for the initial entry's "sethi". */
4692 rela.r_offset = (htab->elf.splt->output_section->vma
4693 + htab->elf.splt->output_offset);
4694 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4695 rela.r_addend = 8;
4696 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4697 loc += sizeof (Elf32_External_Rela);
4698
4699 /* Likewise the following "or". */
4700 rela.r_offset += 4;
4701 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4702 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4703 loc += sizeof (Elf32_External_Rela);
4704
4705 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4706 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4707 in which symbols were output. */
4708 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4709 {
4710 Elf_Internal_Rela rel;
4711
4712 /* The entry's initial "sethi" (against _G_O_T_). */
4713 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4714 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4715 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4716 loc += sizeof (Elf32_External_Rela);
4717
4718 /* The following "or" (also against _G_O_T_). */
4719 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4720 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4721 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4722 loc += sizeof (Elf32_External_Rela);
4723
4724 /* The .got.plt entry (against _P_L_T_). */
4725 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4726 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4727 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4728 loc += sizeof (Elf32_External_Rela);
4729 }
4730 }
4731
4732 /* Install the first PLT entry in a VxWorks shared object. */
4733
4734 static void
4735 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4736 {
4737 struct _bfd_sparc_elf_link_hash_table *htab;
4738 unsigned int i;
4739
4740 htab = _bfd_sparc_elf_hash_table (info);
4741 BFD_ASSERT (htab != NULL);
4742
4743 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4744 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4745 htab->elf.splt->contents + i * 4);
4746 }
4747
4748 /* Finish up local dynamic symbol handling. We set the contents of
4749 various dynamic sections here. */
4750
4751 static bfd_boolean
4752 finish_local_dynamic_symbol (void **slot, void *inf)
4753 {
4754 struct elf_link_hash_entry *h
4755 = (struct elf_link_hash_entry *) *slot;
4756 struct bfd_link_info *info
4757 = (struct bfd_link_info *) inf;
4758
4759 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4760 h, NULL);
4761 }
4762
4763 bfd_boolean
4764 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4765 {
4766 bfd *dynobj;
4767 asection *sdyn;
4768 struct _bfd_sparc_elf_link_hash_table *htab;
4769
4770 htab = _bfd_sparc_elf_hash_table (info);
4771 BFD_ASSERT (htab != NULL);
4772 dynobj = htab->elf.dynobj;
4773
4774 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4775
4776 if (elf_hash_table (info)->dynamic_sections_created)
4777 {
4778 asection *splt;
4779
4780 splt = htab->elf.splt;
4781 BFD_ASSERT (splt != NULL && sdyn != NULL);
4782
4783 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4784 return FALSE;
4785
4786 /* Initialize the contents of the .plt section. */
4787 if (splt->size > 0)
4788 {
4789 if (htab->is_vxworks)
4790 {
4791 if (bfd_link_pic (info))
4792 sparc_vxworks_finish_shared_plt (output_bfd, info);
4793 else
4794 sparc_vxworks_finish_exec_plt (output_bfd, info);
4795 }
4796 else
4797 {
4798 memset (splt->contents, 0, htab->plt_header_size);
4799 if (!ABI_64_P (output_bfd))
4800 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4801 splt->contents + splt->size - 4);
4802 }
4803 }
4804
4805 if (elf_section_data (splt->output_section) != NULL)
4806 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4807 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4808 ? 0 : htab->plt_entry_size);
4809 }
4810
4811 /* Set the first entry in the global offset table to the address of
4812 the dynamic section. */
4813 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4814 {
4815 bfd_vma val = (sdyn ?
4816 sdyn->output_section->vma + sdyn->output_offset :
4817 0);
4818
4819 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4820 }
4821
4822 if (htab->elf.sgot)
4823 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4824 SPARC_ELF_WORD_BYTES (htab);
4825
4826 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4827 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4828
4829 return TRUE;
4830 }
4831
4832 \f
4833 /* Set the right machine number for a SPARC ELF file. */
4834
4835 bfd_boolean
4836 _bfd_sparc_elf_object_p (bfd *abfd)
4837 {
4838 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4839 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4840 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4841
4842 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4843 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4844 | ELF_SPARC_HWCAP_VIS3
4845 | ELF_SPARC_HWCAP_HPC);
4846 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4847 | ELF_SPARC_HWCAP_DES
4848 | ELF_SPARC_HWCAP_KASUMI
4849 | ELF_SPARC_HWCAP_CAMELLIA
4850 | ELF_SPARC_HWCAP_MD5
4851 | ELF_SPARC_HWCAP_SHA1
4852 | ELF_SPARC_HWCAP_SHA256
4853 | ELF_SPARC_HWCAP_SHA512
4854 | ELF_SPARC_HWCAP_MPMUL
4855 | ELF_SPARC_HWCAP_MONT
4856 | ELF_SPARC_HWCAP_CRC32C
4857 | ELF_SPARC_HWCAP_CBCOND
4858 | ELF_SPARC_HWCAP_PAUSE);
4859 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4860 | ELF_SPARC_HWCAP_IMA);
4861 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4862 | ELF_SPARC_HWCAP2_MWAIT
4863 | ELF_SPARC_HWCAP2_XMPMUL
4864 | ELF_SPARC_HWCAP2_XMONT);
4865
4866 if (ABI_64_P (abfd))
4867 {
4868 unsigned long mach = bfd_mach_sparc_v9;
4869
4870 if (hwcaps2->i & v9m_hwcaps2_mask)
4871 mach = bfd_mach_sparc_v9m;
4872 else if (hwcaps->i & v9v_hwcaps_mask)
4873 mach = bfd_mach_sparc_v9v;
4874 else if (hwcaps->i & v9e_hwcaps_mask)
4875 mach = bfd_mach_sparc_v9e;
4876 else if (hwcaps->i & v9d_hwcaps_mask)
4877 mach = bfd_mach_sparc_v9d;
4878 else if (hwcaps->i & v9c_hwcaps_mask)
4879 mach = bfd_mach_sparc_v9c;
4880 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4881 mach = bfd_mach_sparc_v9b;
4882 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4883 mach = bfd_mach_sparc_v9a;
4884 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4885 }
4886 else
4887 {
4888 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4889 {
4890 if (hwcaps2->i & v9m_hwcaps2_mask)
4891 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4892 bfd_mach_sparc_v8plusm);
4893 else if (hwcaps->i & v9v_hwcaps_mask)
4894 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4895 bfd_mach_sparc_v8plusv);
4896 else if (hwcaps->i & v9e_hwcaps_mask)
4897 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4898 bfd_mach_sparc_v8pluse);
4899 else if (hwcaps->i & v9d_hwcaps_mask)
4900 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4901 bfd_mach_sparc_v8plusd);
4902 else if (hwcaps->i & v9c_hwcaps_mask)
4903 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4904 bfd_mach_sparc_v8plusc);
4905 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4906 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4907 bfd_mach_sparc_v8plusb);
4908 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4909 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4910 bfd_mach_sparc_v8plusa);
4911 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4912 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4913 bfd_mach_sparc_v8plus);
4914 else
4915 return FALSE;
4916 }
4917 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4918 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4919 bfd_mach_sparc_sparclite_le);
4920 else
4921 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4922 }
4923 }
4924
4925 /* Return address for Ith PLT stub in section PLT, for relocation REL
4926 or (bfd_vma) -1 if it should not be included. */
4927
4928 bfd_vma
4929 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4930 {
4931 if (ABI_64_P (plt->owner))
4932 {
4933 bfd_vma j;
4934
4935 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4936 if (i < PLT64_LARGE_THRESHOLD)
4937 return plt->vma + i * PLT64_ENTRY_SIZE;
4938
4939 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4940 i -= j;
4941 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4942 }
4943 else
4944 return rel->address;
4945 }
4946
4947 /* Merge backend specific data from an object file to the output
4948 object file when linking. */
4949
4950 bfd_boolean
4951 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4952 {
4953 bfd *obfd = info->output_bfd;
4954 obj_attribute *in_attr, *in_attrs;
4955 obj_attribute *out_attr, *out_attrs;
4956
4957 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4958 {
4959 /* This is the first object. Copy the attributes. */
4960 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4961
4962 /* Use the Tag_null value to indicate the attributes have been
4963 initialized. */
4964 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4965
4966 return TRUE;
4967 }
4968
4969 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4970 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4971
4972 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4973 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4974
4975 out_attr->i |= in_attr->i;
4976 out_attr->type = 1;
4977
4978 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4979 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4980
4981 out_attr->i |= in_attr->i;
4982 out_attr->type = 1;
4983
4984 /* Merge Tag_compatibility attributes and any common GNU ones. */
4985 _bfd_elf_merge_object_attributes (ibfd, info);
4986
4987 return TRUE;
4988 }
GDB Binutils - Deliverables
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