]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blob - bfd/elfxx-sparc.c
projects / thirdparty / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
bfd: allow negative offsets to _GLOBAL_OFFSET_TABLE_ in elf64 SPARC
[thirdparty/binutils-gdb.git] / bfd / elfxx-sparc.c
1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2016 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* This file handles functionality common to the different SPARC ABI's. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34 #include "objalloc.h"
35 #include "hashtab.h"
36
37 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
38 #define MINUS_ONE (~ (bfd_vma) 0)
39
40 #define ABI_64_P(abfd) \
41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
42
43 /* The relocation "howto" table. */
44
45 /* Utility for performing the standard initial work of an instruction
46 relocation.
47 *PRELOCATION will contain the relocated item.
48 *PINSN will contain the instruction from the input stream.
49 If the result is `bfd_reloc_other' the caller can continue with
50 performing the relocation. Otherwise it must stop and return the
51 value to its caller. */
52
53 static bfd_reloc_status_type
54 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
55 void * data, asection *input_section, bfd *output_bfd,
56 bfd_vma *prelocation, bfd_vma *pinsn)
57 {
58 bfd_vma relocation;
59 reloc_howto_type *howto = reloc_entry->howto;
60
61 if (output_bfd != (bfd *) NULL
62 && (symbol->flags & BSF_SECTION_SYM) == 0
63 && (! howto->partial_inplace
64 || reloc_entry->addend == 0))
65 {
66 reloc_entry->address += input_section->output_offset;
67 return bfd_reloc_ok;
68 }
69
70 /* This works because partial_inplace is FALSE. */
71 if (output_bfd != NULL)
72 return bfd_reloc_continue;
73
74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
75 return bfd_reloc_outofrange;
76
77 relocation = (symbol->value
78 + symbol->section->output_section->vma
79 + symbol->section->output_offset);
80 relocation += reloc_entry->addend;
81 if (howto->pc_relative)
82 {
83 relocation -= (input_section->output_section->vma
84 + input_section->output_offset);
85 relocation -= reloc_entry->address;
86 }
87
88 *prelocation = relocation;
89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
90 return bfd_reloc_other;
91 }
92
93 /* For unsupported relocs. */
94
95 static bfd_reloc_status_type
96 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
97 arelent *reloc_entry ATTRIBUTE_UNUSED,
98 asymbol *symbol ATTRIBUTE_UNUSED,
99 void * data ATTRIBUTE_UNUSED,
100 asection *input_section ATTRIBUTE_UNUSED,
101 bfd *output_bfd ATTRIBUTE_UNUSED,
102 char **error_message ATTRIBUTE_UNUSED)
103 {
104 return bfd_reloc_notsupported;
105 }
106
107 /* Handle the WDISP16 reloc. */
108
109 static bfd_reloc_status_type
110 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
111 void * data, asection *input_section, bfd *output_bfd,
112 char **error_message ATTRIBUTE_UNUSED)
113 {
114 bfd_vma relocation;
115 bfd_vma insn;
116 bfd_reloc_status_type status;
117
118 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
119 input_section, output_bfd, &relocation, &insn);
120 if (status != bfd_reloc_other)
121 return status;
122
123 insn &= ~ (bfd_vma) 0x303fff;
124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
126
127 if ((bfd_signed_vma) relocation < - 0x40000
128 || (bfd_signed_vma) relocation > 0x3ffff)
129 return bfd_reloc_overflow;
130 else
131 return bfd_reloc_ok;
132 }
133
134 /* Handle the WDISP10 reloc. */
135
136 static bfd_reloc_status_type
137 sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 void * data, asection *input_section, bfd *output_bfd,
139 char **error_message ATTRIBUTE_UNUSED)
140 {
141 bfd_vma relocation;
142 bfd_vma insn;
143 bfd_reloc_status_type status;
144
145 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
146 input_section, output_bfd, &relocation, &insn);
147 if (status != bfd_reloc_other)
148 return status;
149
150 insn &= ~ (bfd_vma) 0x181fe0;
151 insn |= (((relocation >> 2) & 0x300) << 11)
152 | (((relocation >> 2) & 0xff) << 5);
153 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
154
155 if ((bfd_signed_vma) relocation < - 0x1000
156 || (bfd_signed_vma) relocation > 0xfff)
157 return bfd_reloc_overflow;
158 else
159 return bfd_reloc_ok;
160 }
161
162 /* Handle the HIX22 reloc. */
163
164 static bfd_reloc_status_type
165 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
166 void * data, asection *input_section, bfd *output_bfd,
167 char **error_message ATTRIBUTE_UNUSED)
168 {
169 bfd_vma relocation;
170 bfd_vma insn;
171 bfd_reloc_status_type status;
172
173 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
174 input_section, output_bfd, &relocation, &insn);
175 if (status != bfd_reloc_other)
176 return status;
177
178 relocation ^= MINUS_ONE;
179 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
180 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
181
182 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
183 return bfd_reloc_overflow;
184 else
185 return bfd_reloc_ok;
186 }
187
188 /* Handle the LOX10 reloc. */
189
190 static bfd_reloc_status_type
191 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
192 void * data, asection *input_section, bfd *output_bfd,
193 char **error_message ATTRIBUTE_UNUSED)
194 {
195 bfd_vma relocation;
196 bfd_vma insn;
197 bfd_reloc_status_type status;
198
199 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
200 input_section, output_bfd, &relocation, &insn);
201 if (status != bfd_reloc_other)
202 return status;
203
204 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
205 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
206
207 return bfd_reloc_ok;
208 }
209
210 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
211 {
212 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
213 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
214 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
215 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
216 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
217 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
218 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
219 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
220 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
221 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
223 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
224 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
225 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
226 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
227 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
228 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
229 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
230 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
231 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
232 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
233 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
234 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
235 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
236 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
237 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
238 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
239 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
240 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
241 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
242 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
243 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
244 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
245 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
246 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
247 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
248 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
249 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE),
250 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE),
251 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE),
252 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
253 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
254 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
255 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
256 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
257 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
258 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
259 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
260 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
261 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
262 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
263 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
264 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
265 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
266 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
267 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
268 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
269 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
270 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
271 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
272 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
273 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
274 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
275 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
276 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
277 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
278 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
279 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
280 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
281 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
282 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
283 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
284 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
285 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
286 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
287 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
288 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
289 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE),
290 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
291 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE),
292 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE),
293 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE),
294 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE),
295 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE),
296 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE),
297 HOWTO(R_SPARC_H34,12,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",FALSE,0,0x003fffff,FALSE),
298 HOWTO(R_SPARC_SIZE32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",FALSE,0,0xffffffff,TRUE),
299 HOWTO(R_SPARC_SIZE64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",FALSE,0,MINUS_ONE, TRUE),
300 HOWTO(R_SPARC_WDISP10,2,2,10,TRUE, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",FALSE,0,0x00000000,TRUE),
301 };
302 static reloc_howto_type sparc_jmp_irel_howto =
303 HOWTO(R_SPARC_JMP_IREL, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",FALSE,0,0x00000000,TRUE);
304 static reloc_howto_type sparc_irelative_howto =
305 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
306 static reloc_howto_type sparc_vtinherit_howto =
307 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
308 static reloc_howto_type sparc_vtentry_howto =
309 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
310 static reloc_howto_type sparc_rev32_howto =
311 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
312
313 reloc_howto_type *
314 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
315 bfd_reloc_code_real_type code)
316 {
317 /* We explicitly handle each relocation type in the switch
318 instead of using a lookup table for efficiency. */
319 switch (code)
320 {
321 case BFD_RELOC_NONE:
322 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
323
324 case BFD_RELOC_8:
325 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
326
327 case BFD_RELOC_16:
328 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
329
330 case BFD_RELOC_32:
331 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
332
333 case BFD_RELOC_8_PCREL:
334 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
335
336 case BFD_RELOC_16_PCREL:
337 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
338
339 case BFD_RELOC_32_PCREL:
340 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
341
342 case BFD_RELOC_32_PCREL_S2:
343 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
344
345 case BFD_RELOC_SPARC_WDISP22:
346 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
347
348 case BFD_RELOC_HI22:
349 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
350
351 case BFD_RELOC_SPARC22:
352 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
353
354 case BFD_RELOC_SPARC13:
355 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
356
357 case BFD_RELOC_LO10:
358 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
359
360 case BFD_RELOC_SPARC_GOT10:
361 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
362
363 case BFD_RELOC_SPARC_GOT13:
364 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
365
366 case BFD_RELOC_SPARC_GOT22:
367 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
368
369 case BFD_RELOC_SPARC_PC10:
370 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
371
372 case BFD_RELOC_SPARC_PC22:
373 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
374
375 case BFD_RELOC_SPARC_WPLT30:
376 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
377
378 case BFD_RELOC_SPARC_COPY:
379 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
380
381 case BFD_RELOC_SPARC_GLOB_DAT:
382 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
383
384 case BFD_RELOC_SPARC_JMP_SLOT:
385 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
386
387 case BFD_RELOC_SPARC_RELATIVE:
388 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
389
390 case BFD_RELOC_SPARC_UA32:
391 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
392
393 case BFD_RELOC_SPARC_PLT32:
394 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
395
396 case BFD_RELOC_SPARC_10:
397 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
398
399 case BFD_RELOC_SPARC_11:
400 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
401
402 case BFD_RELOC_SPARC_64:
403 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
404
405 case BFD_RELOC_SPARC_OLO10:
406 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
407
408 case BFD_RELOC_SPARC_HH22:
409 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
410
411 case BFD_RELOC_SPARC_HM10:
412 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
413
414 case BFD_RELOC_SPARC_LM22:
415 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
416
417 case BFD_RELOC_SPARC_PC_HH22:
418 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
419
420 case BFD_RELOC_SPARC_PC_HM10:
421 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
422
423 case BFD_RELOC_SPARC_PC_LM22:
424 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
425
426 case BFD_RELOC_SPARC_WDISP16:
427 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
428
429 case BFD_RELOC_SPARC_WDISP19:
430 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
431
432 case BFD_RELOC_SPARC_7:
433 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
434
435 case BFD_RELOC_SPARC_5:
436 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
437
438 case BFD_RELOC_SPARC_6:
439 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
440
441 case BFD_RELOC_SPARC_DISP64:
442 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
443
444 case BFD_RELOC_SPARC_PLT64:
445 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
446
447 case BFD_RELOC_SPARC_HIX22:
448 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
449
450 case BFD_RELOC_SPARC_LOX10:
451 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
452
453 case BFD_RELOC_SPARC_H44:
454 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
455
456 case BFD_RELOC_SPARC_M44:
457 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
458
459 case BFD_RELOC_SPARC_L44:
460 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
461
462 case BFD_RELOC_SPARC_REGISTER:
463 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
464
465 case BFD_RELOC_SPARC_UA64:
466 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
467
468 case BFD_RELOC_SPARC_UA16:
469 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
470
471 case BFD_RELOC_SPARC_TLS_GD_HI22:
472 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
473
474 case BFD_RELOC_SPARC_TLS_GD_LO10:
475 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
476
477 case BFD_RELOC_SPARC_TLS_GD_ADD:
478 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
479
480 case BFD_RELOC_SPARC_TLS_GD_CALL:
481 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
482
483 case BFD_RELOC_SPARC_TLS_LDM_HI22:
484 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
485
486 case BFD_RELOC_SPARC_TLS_LDM_LO10:
487 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
488
489 case BFD_RELOC_SPARC_TLS_LDM_ADD:
490 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
491
492 case BFD_RELOC_SPARC_TLS_LDM_CALL:
493 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
494
495 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
496 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
497
498 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
499 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
500
501 case BFD_RELOC_SPARC_TLS_LDO_ADD:
502 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
503
504 case BFD_RELOC_SPARC_TLS_IE_HI22:
505 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
506
507 case BFD_RELOC_SPARC_TLS_IE_LO10:
508 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
509
510 case BFD_RELOC_SPARC_TLS_IE_LD:
511 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
512
513 case BFD_RELOC_SPARC_TLS_IE_LDX:
514 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
515
516 case BFD_RELOC_SPARC_TLS_IE_ADD:
517 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
518
519 case BFD_RELOC_SPARC_TLS_LE_HIX22:
520 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
521
522 case BFD_RELOC_SPARC_TLS_LE_LOX10:
523 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
524
525 case BFD_RELOC_SPARC_TLS_DTPMOD32:
526 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
527
528 case BFD_RELOC_SPARC_TLS_DTPMOD64:
529 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
530
531 case BFD_RELOC_SPARC_TLS_DTPOFF32:
532 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
533
534 case BFD_RELOC_SPARC_TLS_DTPOFF64:
535 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
536
537 case BFD_RELOC_SPARC_TLS_TPOFF32:
538 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
539
540 case BFD_RELOC_SPARC_TLS_TPOFF64:
541 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
542
543 case BFD_RELOC_SPARC_GOTDATA_HIX22:
544 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
545
546 case BFD_RELOC_SPARC_GOTDATA_LOX10:
547 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
548
549 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
550 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
551
552 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
553 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
554
555 case BFD_RELOC_SPARC_GOTDATA_OP:
556 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
557
558 case BFD_RELOC_SPARC_H34:
559 return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
560
561 case BFD_RELOC_SPARC_SIZE32:
562 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
563
564 case BFD_RELOC_SPARC_SIZE64:
565 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
566
567 case BFD_RELOC_SPARC_WDISP10:
568 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
569
570 case BFD_RELOC_SPARC_JMP_IREL:
571 return &sparc_jmp_irel_howto;
572
573 case BFD_RELOC_SPARC_IRELATIVE:
574 return &sparc_irelative_howto;
575
576 case BFD_RELOC_VTABLE_INHERIT:
577 return &sparc_vtinherit_howto;
578
579 case BFD_RELOC_VTABLE_ENTRY:
580 return &sparc_vtentry_howto;
581
582 case BFD_RELOC_SPARC_REV32:
583 return &sparc_rev32_howto;
584
585 default:
586 break;
587 }
588 bfd_set_error (bfd_error_bad_value);
589 return NULL;
590 }
591
592 reloc_howto_type *
593 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
594 const char *r_name)
595 {
596 unsigned int i;
597
598 for (i = 0;
599 i < (sizeof (_bfd_sparc_elf_howto_table)
600 / sizeof (_bfd_sparc_elf_howto_table[0]));
601 i++)
602 if (_bfd_sparc_elf_howto_table[i].name != NULL
603 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
604 return &_bfd_sparc_elf_howto_table[i];
605
606 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
607 return &sparc_vtinherit_howto;
608 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
609 return &sparc_vtentry_howto;
610 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
611 return &sparc_rev32_howto;
612
613 return NULL;
614 }
615
616 reloc_howto_type *
617 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
618 {
619 switch (r_type)
620 {
621 case R_SPARC_JMP_IREL:
622 return &sparc_jmp_irel_howto;
623
624 case R_SPARC_IRELATIVE:
625 return &sparc_irelative_howto;
626
627 case R_SPARC_GNU_VTINHERIT:
628 return &sparc_vtinherit_howto;
629
630 case R_SPARC_GNU_VTENTRY:
631 return &sparc_vtentry_howto;
632
633 case R_SPARC_REV32:
634 return &sparc_rev32_howto;
635
636 default:
637 if (r_type >= (unsigned int) R_SPARC_max_std)
638 {
639 (*_bfd_error_handler) (_("invalid relocation type %d"),
640 (int) r_type);
641 r_type = R_SPARC_NONE;
642 }
643 return &_bfd_sparc_elf_howto_table[r_type];
644 }
645 }
646
647 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
648 so just take advantage of that. */
649 #define SPARC_ELF_R_TYPE(r_info) \
650 ((r_info) & 0xff)
651
652 void
653 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
654 Elf_Internal_Rela *dst)
655 {
656 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
657
658 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
659 }
660 \f
661
662 /* The nop opcode we use. */
663 #define SPARC_NOP 0x01000000
664
665 #define SPARC_INSN_BYTES 4
666
667 /* The SPARC linker needs to keep track of the number of relocs that it
668 decides to copy as dynamic relocs in check_relocs for each symbol.
669 This is so that it can later discard them if they are found to be
670 unnecessary. We store the information in a field extending the
671 regular ELF linker hash table. */
672
673 struct _bfd_sparc_elf_dyn_relocs
674 {
675 struct _bfd_sparc_elf_dyn_relocs *next;
676
677 /* The input section of the reloc. */
678 asection *sec;
679
680 /* Total number of relocs copied for the input section. */
681 bfd_size_type count;
682
683 /* Number of pc-relative relocs copied for the input section. */
684 bfd_size_type pc_count;
685 };
686
687 /* SPARC ELF linker hash entry. */
688
689 struct _bfd_sparc_elf_link_hash_entry
690 {
691 struct elf_link_hash_entry elf;
692
693 /* Track dynamic relocs copied for this symbol. */
694 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
695
696 #define GOT_UNKNOWN 0
697 #define GOT_NORMAL 1
698 #define GOT_TLS_GD 2
699 #define GOT_TLS_IE 3
700 unsigned char tls_type;
701 };
702
703 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
704
705 struct _bfd_sparc_elf_obj_tdata
706 {
707 struct elf_obj_tdata root;
708
709 /* tls_type for each local got entry. */
710 char *local_got_tls_type;
711
712 /* TRUE if TLS GD relocs has been seen for this object. */
713 bfd_boolean has_tlsgd;
714 };
715
716 #define _bfd_sparc_elf_tdata(abfd) \
717 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
718
719 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
720 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
721
722 #define is_sparc_elf(bfd) \
723 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
724 && elf_tdata (bfd) != NULL \
725 && elf_object_id (bfd) == SPARC_ELF_DATA)
726
727 bfd_boolean
728 _bfd_sparc_elf_mkobject (bfd *abfd)
729 {
730 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
731 SPARC_ELF_DATA);
732 }
733
734 static void
735 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
736 {
737 bfd_put_32 (abfd, val, ptr);
738 }
739
740 static void
741 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
742 {
743 bfd_put_64 (abfd, val, ptr);
744 }
745
746 static void
747 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
748 {
749 const struct elf_backend_data *bed;
750 bfd_byte *loc;
751
752 bed = get_elf_backend_data (abfd);
753 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
754 bed->s->swap_reloca_out (abfd, rel, loc);
755 }
756
757 static bfd_vma
758 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
759 bfd_vma rel_index ATTRIBUTE_UNUSED,
760 bfd_vma type ATTRIBUTE_UNUSED)
761 {
762 return ELF64_R_INFO (rel_index,
763 (in_rel ?
764 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
765 type) : type));
766 }
767
768 static bfd_vma
769 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
770 bfd_vma rel_index, bfd_vma type)
771 {
772 return ELF32_R_INFO (rel_index, type);
773 }
774
775 static bfd_vma
776 sparc_elf_r_symndx_64 (bfd_vma r_info)
777 {
778 bfd_vma r_symndx = ELF32_R_SYM (r_info);
779 return (r_symndx >> 24);
780 }
781
782 static bfd_vma
783 sparc_elf_r_symndx_32 (bfd_vma r_info)
784 {
785 return ELF32_R_SYM (r_info);
786 }
787
788 /* PLT/GOT stuff */
789
790 #define PLT32_ENTRY_SIZE 12
791 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
792
793 /* The first four entries in a 32-bit procedure linkage table are reserved,
794 and the initial contents are unimportant (we zero them out).
795 Subsequent entries look like this. See the SVR4 ABI SPARC
796 supplement to see how this works. */
797
798 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
799 #define PLT32_ENTRY_WORD0 0x03000000
800 /* b,a .plt0. We fill in the offset later. */
801 #define PLT32_ENTRY_WORD1 0x30800000
802 /* nop. */
803 #define PLT32_ENTRY_WORD2 SPARC_NOP
804
805 static int
806 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
807 bfd_vma max ATTRIBUTE_UNUSED,
808 bfd_vma *r_offset)
809 {
810 bfd_put_32 (output_bfd,
811 PLT32_ENTRY_WORD0 + offset,
812 splt->contents + offset);
813 bfd_put_32 (output_bfd,
814 (PLT32_ENTRY_WORD1
815 + (((- (offset + 4)) >> 2) & 0x3fffff)),
816 splt->contents + offset + 4);
817 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
818 splt->contents + offset + 8);
819
820 *r_offset = offset;
821
822 return offset / PLT32_ENTRY_SIZE - 4;
823 }
824
825 /* Both the headers and the entries are icache aligned. */
826 #define PLT64_ENTRY_SIZE 32
827 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
828 #define PLT64_LARGE_THRESHOLD 32768
829
830 static int
831 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
832 bfd_vma max, bfd_vma *r_offset)
833 {
834 unsigned char *entry = splt->contents + offset;
835 const unsigned int nop = SPARC_NOP;
836 int plt_index;
837
838 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
839 {
840 unsigned int sethi, ba;
841
842 *r_offset = offset;
843
844 plt_index = (offset / PLT64_ENTRY_SIZE);
845
846 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
847 ba = 0x30680000
848 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
849
850 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
851 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
852 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
853 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
854 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
855 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
856 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
857 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
858 }
859 else
860 {
861 unsigned char *ptr;
862 unsigned int ldx;
863 int block, last_block, ofs, last_ofs, chunks_this_block;
864 const int insn_chunk_size = (6 * 4);
865 const int ptr_chunk_size = (1 * 8);
866 const int entries_per_block = 160;
867 const int block_size = entries_per_block * (insn_chunk_size
868 + ptr_chunk_size);
869
870 /* Entries 32768 and higher are grouped into blocks of 160.
871 The blocks are further subdivided into 160 sequences of
872 6 instructions and 160 pointers. If a block does not require
873 the full 160 entries, let's say it requires N, then there
874 will be N sequences of 6 instructions and N pointers. */
875
876 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
877 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
878
879 block = offset / block_size;
880 last_block = max / block_size;
881 if (block != last_block)
882 {
883 chunks_this_block = 160;
884 }
885 else
886 {
887 last_ofs = max % block_size;
888 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
889 }
890
891 ofs = offset % block_size;
892
893 plt_index = (PLT64_LARGE_THRESHOLD +
894 (block * 160) +
895 (ofs / insn_chunk_size));
896
897 ptr = splt->contents
898 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
899 + (block * block_size)
900 + (chunks_this_block * insn_chunk_size)
901 + (ofs / insn_chunk_size) * ptr_chunk_size;
902
903 *r_offset = (bfd_vma) (ptr - splt->contents);
904
905 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
906
907 /* mov %o7,%g5
908 call .+8
909 nop
910 ldx [%o7+P],%g1
911 jmpl %o7+%g1,%g1
912 mov %g5,%o7 */
913 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
914 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
915 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
916 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
917 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
918 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
919
920 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
921 }
922
923 return plt_index - 4;
924 }
925
926 /* The format of the first PLT entry in a VxWorks executable. */
927 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
928 {
929 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
930 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
931 0xc4008000, /* ld [ %g2 ], %g2 */
932 0x81c08000, /* jmp %g2 */
933 0x01000000 /* nop */
934 };
935
936 /* The format of subsequent PLT entries. */
937 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
938 {
939 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
940 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
941 0xc2004000, /* ld [ %g1 ], %g1 */
942 0x81c04000, /* jmp %g1 */
943 0x01000000, /* nop */
944 0x03000000, /* sethi %hi(f@pltindex), %g1 */
945 0x10800000, /* b _PLT_resolve */
946 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
947 };
948
949 /* The format of the first PLT entry in a VxWorks shared object. */
950 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
951 {
952 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
953 0x81c08000, /* jmp %g2 */
954 0x01000000 /* nop */
955 };
956
957 /* The format of subsequent PLT entries. */
958 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
959 {
960 0x03000000, /* sethi %hi(f@got), %g1 */
961 0x82106000, /* or %g1, %lo(f@got), %g1 */
962 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
963 0x81c04000, /* jmp %g1 */
964 0x01000000, /* nop */
965 0x03000000, /* sethi %hi(f@pltindex), %g1 */
966 0x10800000, /* b _PLT_resolve */
967 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
968 };
969
970 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
971 htab->put_word(bfd, val, ptr)
972
973 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
974 htab->r_info(in_rel, index, type)
975
976 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
977 htab->r_symndx(r_info)
978
979 #define SPARC_ELF_WORD_BYTES(htab) \
980 htab->bytes_per_word
981
982 #define SPARC_ELF_RELA_BYTES(htab) \
983 htab->bytes_per_rela
984
985 #define SPARC_ELF_DTPOFF_RELOC(htab) \
986 htab->dtpoff_reloc
987
988 #define SPARC_ELF_DTPMOD_RELOC(htab) \
989 htab->dtpmod_reloc
990
991 #define SPARC_ELF_TPOFF_RELOC(htab) \
992 htab->tpoff_reloc
993
994 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
995 htab->build_plt_entry (obfd, splt, off, max, r_off)
996
997 /* Create an entry in an SPARC ELF linker hash table. */
998
999 static struct bfd_hash_entry *
1000 link_hash_newfunc (struct bfd_hash_entry *entry,
1001 struct bfd_hash_table *table, const char *string)
1002 {
1003 /* Allocate the structure if it has not already been allocated by a
1004 subclass. */
1005 if (entry == NULL)
1006 {
1007 entry = bfd_hash_allocate (table,
1008 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1009 if (entry == NULL)
1010 return entry;
1011 }
1012
1013 /* Call the allocation method of the superclass. */
1014 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1015 if (entry != NULL)
1016 {
1017 struct _bfd_sparc_elf_link_hash_entry *eh;
1018
1019 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1020 eh->dyn_relocs = NULL;
1021 eh->tls_type = GOT_UNKNOWN;
1022 }
1023
1024 return entry;
1025 }
1026
1027 /* The name of the dynamic interpreter. This is put in the .interp
1028 section. */
1029
1030 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1031 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1032
1033 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1034 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1035 as global symbol. We reuse indx and dynstr_index for local symbol
1036 hash since they aren't used by global symbols in this backend. */
1037
1038 static hashval_t
1039 elf_sparc_local_htab_hash (const void *ptr)
1040 {
1041 struct elf_link_hash_entry *h
1042 = (struct elf_link_hash_entry *) ptr;
1043 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1044 }
1045
1046 /* Compare local hash entries. */
1047
1048 static int
1049 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1050 {
1051 struct elf_link_hash_entry *h1
1052 = (struct elf_link_hash_entry *) ptr1;
1053 struct elf_link_hash_entry *h2
1054 = (struct elf_link_hash_entry *) ptr2;
1055
1056 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1057 }
1058
1059 /* Find and/or create a hash entry for local symbol. */
1060
1061 static struct elf_link_hash_entry *
1062 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1063 bfd *abfd, const Elf_Internal_Rela *rel,
1064 bfd_boolean create)
1065 {
1066 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1067 asection *sec = abfd->sections;
1068 unsigned long r_symndx;
1069 hashval_t h;
1070 void **slot;
1071
1072 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1073 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1074
1075 e.elf.indx = sec->id;
1076 e.elf.dynstr_index = r_symndx;
1077 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1078 create ? INSERT : NO_INSERT);
1079
1080 if (!slot)
1081 return NULL;
1082
1083 if (*slot)
1084 {
1085 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1086 return &ret->elf;
1087 }
1088
1089 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1090 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1091 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1092 if (ret)
1093 {
1094 memset (ret, 0, sizeof (*ret));
1095 ret->elf.indx = sec->id;
1096 ret->elf.dynstr_index = r_symndx;
1097 ret->elf.dynindx = -1;
1098 ret->elf.plt.offset = (bfd_vma) -1;
1099 ret->elf.got.offset = (bfd_vma) -1;
1100 *slot = ret;
1101 }
1102 return &ret->elf;
1103 }
1104
1105 /* Destroy a SPARC ELF linker hash table. */
1106
1107 static void
1108 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1109 {
1110 struct _bfd_sparc_elf_link_hash_table *htab
1111 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1112
1113 if (htab->loc_hash_table)
1114 htab_delete (htab->loc_hash_table);
1115 if (htab->loc_hash_memory)
1116 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1117 _bfd_elf_link_hash_table_free (obfd);
1118 }
1119
1120 /* Create a SPARC ELF linker hash table. */
1121
1122 struct bfd_link_hash_table *
1123 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1124 {
1125 struct _bfd_sparc_elf_link_hash_table *ret;
1126 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1127
1128 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1129 if (ret == NULL)
1130 return NULL;
1131
1132 if (ABI_64_P (abfd))
1133 {
1134 ret->put_word = sparc_put_word_64;
1135 ret->r_info = sparc_elf_r_info_64;
1136 ret->r_symndx = sparc_elf_r_symndx_64;
1137 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1138 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1139 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1140 ret->word_align_power = 3;
1141 ret->align_power_max = 4;
1142 ret->bytes_per_word = 8;
1143 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1144 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1145 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1146
1147 ret->build_plt_entry = sparc64_plt_entry_build;
1148 ret->plt_header_size = PLT64_HEADER_SIZE;
1149 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1150 }
1151 else
1152 {
1153 ret->put_word = sparc_put_word_32;
1154 ret->r_info = sparc_elf_r_info_32;
1155 ret->r_symndx = sparc_elf_r_symndx_32;
1156 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1157 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1158 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1159 ret->word_align_power = 2;
1160 ret->align_power_max = 3;
1161 ret->bytes_per_word = 4;
1162 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1163 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1164 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1165
1166 ret->build_plt_entry = sparc32_plt_entry_build;
1167 ret->plt_header_size = PLT32_HEADER_SIZE;
1168 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1169 }
1170
1171 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1172 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1173 SPARC_ELF_DATA))
1174 {
1175 free (ret);
1176 return NULL;
1177 }
1178
1179 ret->loc_hash_table = htab_try_create (1024,
1180 elf_sparc_local_htab_hash,
1181 elf_sparc_local_htab_eq,
1182 NULL);
1183 ret->loc_hash_memory = objalloc_create ();
1184 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1185 {
1186 _bfd_sparc_elf_link_hash_table_free (abfd);
1187 return NULL;
1188 }
1189 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1190
1191 return &ret->elf.root;
1192 }
1193
1194 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1195 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1196 hash table. */
1197
1198 bfd_boolean
1199 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1200 struct bfd_link_info *info)
1201 {
1202 struct _bfd_sparc_elf_link_hash_table *htab;
1203
1204 htab = _bfd_sparc_elf_hash_table (info);
1205 BFD_ASSERT (htab != NULL);
1206
1207 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1208 return FALSE;
1209
1210 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1211 if (!bfd_link_pic (info))
1212 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1213
1214 if (htab->is_vxworks)
1215 {
1216 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1217 return FALSE;
1218 if (bfd_link_pic (info))
1219 {
1220 htab->plt_header_size
1221 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1222 htab->plt_entry_size
1223 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1224 }
1225 else
1226 {
1227 htab->plt_header_size
1228 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1229 htab->plt_entry_size
1230 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1231 }
1232 }
1233
1234 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1235 || (!bfd_link_pic (info) && !htab->srelbss))
1236 abort ();
1237
1238 return TRUE;
1239 }
1240
1241 static bfd_boolean
1242 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1243 {
1244 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1245 struct elf_link_hash_table *htab = elf_hash_table (info);
1246 flagword flags, pltflags;
1247 asection *s;
1248
1249 if (htab->irelifunc != NULL || htab->iplt != NULL)
1250 return TRUE;
1251
1252 flags = bed->dynamic_sec_flags;
1253 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1254
1255 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1256 if (s == NULL
1257 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1258 return FALSE;
1259 htab->iplt = s;
1260
1261 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1262 flags | SEC_READONLY);
1263 if (s == NULL
1264 || ! bfd_set_section_alignment (abfd, s,
1265 bed->s->log_file_align))
1266 return FALSE;
1267 htab->irelplt = s;
1268
1269 return TRUE;
1270 }
1271
1272 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1273
1274 void
1275 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1276 struct elf_link_hash_entry *dir,
1277 struct elf_link_hash_entry *ind)
1278 {
1279 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1280
1281 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1282 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1283
1284 if (eind->dyn_relocs != NULL)
1285 {
1286 if (edir->dyn_relocs != NULL)
1287 {
1288 struct _bfd_sparc_elf_dyn_relocs **pp;
1289 struct _bfd_sparc_elf_dyn_relocs *p;
1290
1291 /* Add reloc counts against the indirect sym to the direct sym
1292 list. Merge any entries against the same section. */
1293 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1294 {
1295 struct _bfd_sparc_elf_dyn_relocs *q;
1296
1297 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1298 if (q->sec == p->sec)
1299 {
1300 q->pc_count += p->pc_count;
1301 q->count += p->count;
1302 *pp = p->next;
1303 break;
1304 }
1305 if (q == NULL)
1306 pp = &p->next;
1307 }
1308 *pp = edir->dyn_relocs;
1309 }
1310
1311 edir->dyn_relocs = eind->dyn_relocs;
1312 eind->dyn_relocs = NULL;
1313 }
1314
1315 if (ind->root.type == bfd_link_hash_indirect
1316 && dir->got.refcount <= 0)
1317 {
1318 edir->tls_type = eind->tls_type;
1319 eind->tls_type = GOT_UNKNOWN;
1320 }
1321 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1322 }
1323
1324 static int
1325 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1326 int r_type, int is_local)
1327 {
1328 if (! ABI_64_P (abfd)
1329 && r_type == R_SPARC_TLS_GD_HI22
1330 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1331 r_type = R_SPARC_REV32;
1332
1333 if (bfd_link_pic (info))
1334 return r_type;
1335
1336 switch (r_type)
1337 {
1338 case R_SPARC_TLS_GD_HI22:
1339 if (is_local)
1340 return R_SPARC_TLS_LE_HIX22;
1341 return R_SPARC_TLS_IE_HI22;
1342 case R_SPARC_TLS_GD_LO10:
1343 if (is_local)
1344 return R_SPARC_TLS_LE_LOX10;
1345 return R_SPARC_TLS_IE_LO10;
1346 case R_SPARC_TLS_IE_HI22:
1347 if (is_local)
1348 return R_SPARC_TLS_LE_HIX22;
1349 return r_type;
1350 case R_SPARC_TLS_IE_LO10:
1351 if (is_local)
1352 return R_SPARC_TLS_LE_LOX10;
1353 return r_type;
1354 case R_SPARC_TLS_LDM_HI22:
1355 return R_SPARC_TLS_LE_HIX22;
1356 case R_SPARC_TLS_LDM_LO10:
1357 return R_SPARC_TLS_LE_LOX10;
1358 }
1359
1360 return r_type;
1361 }
1362 \f
1363 /* Look through the relocs for a section during the first phase, and
1364 allocate space in the global offset table or procedure linkage
1365 table. */
1366
1367 bfd_boolean
1368 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1369 asection *sec, const Elf_Internal_Rela *relocs)
1370 {
1371 struct _bfd_sparc_elf_link_hash_table *htab;
1372 Elf_Internal_Shdr *symtab_hdr;
1373 struct elf_link_hash_entry **sym_hashes;
1374 const Elf_Internal_Rela *rel;
1375 const Elf_Internal_Rela *rel_end;
1376 asection *sreloc;
1377 int num_relocs;
1378 bfd_boolean checked_tlsgd = FALSE;
1379
1380 if (bfd_link_relocatable (info))
1381 return TRUE;
1382
1383 htab = _bfd_sparc_elf_hash_table (info);
1384 BFD_ASSERT (htab != NULL);
1385 symtab_hdr = &elf_symtab_hdr (abfd);
1386 sym_hashes = elf_sym_hashes (abfd);
1387
1388 sreloc = NULL;
1389
1390 if (ABI_64_P (abfd))
1391 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1392 else
1393 num_relocs = sec->reloc_count;
1394
1395 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1396
1397 if (htab->elf.dynobj == NULL)
1398 htab->elf.dynobj = abfd;
1399 if (!create_ifunc_sections (htab->elf.dynobj, info))
1400 return FALSE;
1401
1402 rel_end = relocs + num_relocs;
1403 for (rel = relocs; rel < rel_end; rel++)
1404 {
1405 unsigned int r_type;
1406 unsigned long r_symndx;
1407 struct elf_link_hash_entry *h;
1408 Elf_Internal_Sym *isym;
1409
1410 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1411 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1412
1413 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1414 {
1415 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1416 abfd, r_symndx);
1417 return FALSE;
1418 }
1419
1420 isym = NULL;
1421 if (r_symndx < symtab_hdr->sh_info)
1422 {
1423 /* A local symbol. */
1424 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1425 abfd, r_symndx);
1426 if (isym == NULL)
1427 return FALSE;
1428
1429 /* Check relocation against local STT_GNU_IFUNC symbol. */
1430 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1431 {
1432 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1433 TRUE);
1434 if (h == NULL)
1435 return FALSE;
1436
1437 /* Fake a STT_GNU_IFUNC symbol. */
1438 h->type = STT_GNU_IFUNC;
1439 h->def_regular = 1;
1440 h->ref_regular = 1;
1441 h->forced_local = 1;
1442 h->root.type = bfd_link_hash_defined;
1443 }
1444 else
1445 h = NULL;
1446 }
1447 else
1448 {
1449 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1450 while (h->root.type == bfd_link_hash_indirect
1451 || h->root.type == bfd_link_hash_warning)
1452 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1453
1454 /* PR15323, ref flags aren't set for references in the same
1455 object. */
1456 h->root.non_ir_ref = 1;
1457 }
1458
1459 if (h && h->type == STT_GNU_IFUNC)
1460 {
1461 if (h->def_regular)
1462 {
1463 h->ref_regular = 1;
1464 h->plt.refcount += 1;
1465 }
1466 }
1467
1468 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1469 with R_SPARC_TLS_GD_HI22. */
1470 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1471 switch (r_type)
1472 {
1473 case R_SPARC_TLS_GD_HI22:
1474 {
1475 const Elf_Internal_Rela *relt;
1476
1477 for (relt = rel + 1; relt < rel_end; relt++)
1478 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1479 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1480 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1481 break;
1482 checked_tlsgd = TRUE;
1483 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1484 }
1485 break;
1486 case R_SPARC_TLS_GD_LO10:
1487 case R_SPARC_TLS_GD_ADD:
1488 case R_SPARC_TLS_GD_CALL:
1489 checked_tlsgd = TRUE;
1490 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1491 break;
1492 }
1493
1494 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1495 switch (r_type)
1496 {
1497 case R_SPARC_TLS_LDM_HI22:
1498 case R_SPARC_TLS_LDM_LO10:
1499 htab->tls_ldm_got.refcount += 1;
1500 break;
1501
1502 case R_SPARC_TLS_LE_HIX22:
1503 case R_SPARC_TLS_LE_LOX10:
1504 if (bfd_link_pic (info))
1505 goto r_sparc_plt32;
1506 break;
1507
1508 case R_SPARC_TLS_IE_HI22:
1509 case R_SPARC_TLS_IE_LO10:
1510 if (bfd_link_pic (info))
1511 info->flags |= DF_STATIC_TLS;
1512 /* Fall through */
1513
1514 case R_SPARC_GOT10:
1515 case R_SPARC_GOT13:
1516 case R_SPARC_GOT22:
1517 case R_SPARC_GOTDATA_HIX22:
1518 case R_SPARC_GOTDATA_LOX10:
1519 case R_SPARC_GOTDATA_OP_HIX22:
1520 case R_SPARC_GOTDATA_OP_LOX10:
1521 case R_SPARC_TLS_GD_HI22:
1522 case R_SPARC_TLS_GD_LO10:
1523 /* This symbol requires a global offset table entry. */
1524 {
1525 int tls_type, old_tls_type;
1526
1527 switch (r_type)
1528 {
1529 default:
1530 case R_SPARC_GOT10:
1531 case R_SPARC_GOT13:
1532 case R_SPARC_GOT22:
1533 case R_SPARC_GOTDATA_OP_HIX22:
1534 case R_SPARC_GOTDATA_OP_LOX10:
1535 tls_type = GOT_NORMAL;
1536 break;
1537 case R_SPARC_TLS_GD_HI22:
1538 case R_SPARC_TLS_GD_LO10:
1539 tls_type = GOT_TLS_GD;
1540 break;
1541 case R_SPARC_TLS_IE_HI22:
1542 case R_SPARC_TLS_IE_LO10:
1543 tls_type = GOT_TLS_IE;
1544 break;
1545 }
1546
1547 if (h != NULL)
1548 {
1549 h->got.refcount += 1;
1550 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1551 }
1552 else
1553 {
1554 bfd_signed_vma *local_got_refcounts;
1555
1556 /* This is a global offset table entry for a local symbol. */
1557 local_got_refcounts = elf_local_got_refcounts (abfd);
1558 if (local_got_refcounts == NULL)
1559 {
1560 bfd_size_type size;
1561
1562 size = symtab_hdr->sh_info;
1563 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1564 local_got_refcounts = ((bfd_signed_vma *)
1565 bfd_zalloc (abfd, size));
1566 if (local_got_refcounts == NULL)
1567 return FALSE;
1568 elf_local_got_refcounts (abfd) = local_got_refcounts;
1569 _bfd_sparc_elf_local_got_tls_type (abfd)
1570 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1571 }
1572 switch (r_type)
1573 {
1574 case R_SPARC_GOTDATA_OP_HIX22:
1575 case R_SPARC_GOTDATA_OP_LOX10:
1576 break;
1577
1578 default:
1579 local_got_refcounts[r_symndx] += 1;
1580 break;
1581 }
1582 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1583 }
1584
1585 /* If a TLS symbol is accessed using IE at least once,
1586 there is no point to use dynamic model for it. */
1587 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1588 && (old_tls_type != GOT_TLS_GD
1589 || tls_type != GOT_TLS_IE))
1590 {
1591 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1592 tls_type = old_tls_type;
1593 else
1594 {
1595 (*_bfd_error_handler)
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 (!htab->is_vxworks
2665 && elf_hash_table (info)->dynamic_sections_created)
2666 {
2667 if (! ABI_64_P (output_bfd))
2668 {
2669 /* Make space for the trailing nop in .plt. */
2670 if (htab->elf.splt->size > 0)
2671 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2672 }
2673
2674 /* If the .got section is more than 0x1000 bytes, we add
2675 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2676 bit relocations have a greater chance of working. */
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 (_("%B: relocation %s against STT_GNU_IFUNC "
3153 "symbol `%s' isn't handled by %s"), input_bfd,
3154 _bfd_sparc_elf_howto_table[r_type].name,
3155 name, __FUNCTION__);
3156 bfd_set_error (bfd_error_bad_value);
3157 return FALSE;
3158 }
3159 }
3160
3161 switch (r_type)
3162 {
3163 case R_SPARC_GOTDATA_OP_HIX22:
3164 case R_SPARC_GOTDATA_OP_LOX10:
3165 if (SYMBOL_REFERENCES_LOCAL (info, h))
3166 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3167 ? R_SPARC_GOTDATA_HIX22
3168 : R_SPARC_GOTDATA_LOX10);
3169 else
3170 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3171 ? R_SPARC_GOT22
3172 : R_SPARC_GOT10);
3173 howto = _bfd_sparc_elf_howto_table + r_type;
3174 break;
3175
3176 case R_SPARC_GOTDATA_OP:
3177 if (SYMBOL_REFERENCES_LOCAL (info, h))
3178 {
3179 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3180
3181 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3182 relocation = 0x80000000 | (insn & 0x3e07c01f);
3183 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3184 }
3185 continue;
3186 }
3187
3188 switch (r_type)
3189 {
3190 case R_SPARC_GOTDATA_HIX22:
3191 case R_SPARC_GOTDATA_LOX10:
3192 relocation = gdopoff (info, relocation);
3193 break;
3194
3195 case R_SPARC_GOT10:
3196 case R_SPARC_GOT13:
3197 case R_SPARC_GOT22:
3198 /* Relocation is to the entry for this symbol in the global
3199 offset table. */
3200 if (htab->elf.sgot == NULL)
3201 abort ();
3202
3203 if (h != NULL)
3204 {
3205 bfd_boolean dyn;
3206
3207 off = h->got.offset;
3208 BFD_ASSERT (off != (bfd_vma) -1);
3209 dyn = elf_hash_table (info)->dynamic_sections_created;
3210
3211 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3212 bfd_link_pic (info),
3213 h)
3214 || (bfd_link_pic (info)
3215 && SYMBOL_REFERENCES_LOCAL (info, h)))
3216 {
3217 /* This is actually a static link, or it is a
3218 -Bsymbolic link and the symbol is defined
3219 locally, or the symbol was forced to be local
3220 because of a version file. We must initialize
3221 this entry in the global offset table. Since the
3222 offset must always be a multiple of 8 for 64-bit
3223 and 4 for 32-bit, we use the least significant bit
3224 to record whether we have initialized it already.
3225
3226 When doing a dynamic link, we create a .rela.got
3227 relocation entry to initialize the value. This
3228 is done in the finish_dynamic_symbol routine. */
3229 if ((off & 1) != 0)
3230 off &= ~1;
3231 else
3232 {
3233 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3234 htab->elf.sgot->contents + off);
3235 h->got.offset |= 1;
3236 }
3237 }
3238 else
3239 unresolved_reloc = FALSE;
3240 }
3241 else
3242 {
3243 BFD_ASSERT (local_got_offsets != NULL
3244 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3245
3246 off = local_got_offsets[r_symndx];
3247
3248 /* The offset must always be a multiple of 8 on 64-bit and
3249 4 on 32-bit. We use the least significant bit to record
3250 whether we have already processed this entry. */
3251 if ((off & 1) != 0)
3252 off &= ~1;
3253 else
3254 {
3255
3256 if (bfd_link_pic (info))
3257 {
3258 asection *s;
3259 Elf_Internal_Rela outrel;
3260
3261 /* We need to generate a R_SPARC_RELATIVE reloc
3262 for the dynamic linker. */
3263 s = htab->elf.srelgot;
3264 BFD_ASSERT (s != NULL);
3265
3266 outrel.r_offset = (htab->elf.sgot->output_section->vma
3267 + htab->elf.sgot->output_offset
3268 + off);
3269 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3270 0, R_SPARC_RELATIVE);
3271 outrel.r_addend = relocation;
3272 relocation = 0;
3273 sparc_elf_append_rela (output_bfd, s, &outrel);
3274 }
3275
3276 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3277 htab->elf.sgot->contents + off);
3278 local_got_offsets[r_symndx] |= 1;
3279 }
3280 }
3281 relocation = htab->elf.sgot->output_offset + off - got_base;
3282 break;
3283
3284 case R_SPARC_PLT32:
3285 case R_SPARC_PLT64:
3286 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3287 {
3288 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3289 goto r_sparc_plt32;
3290 }
3291 /* Fall through. */
3292
3293 case R_SPARC_WPLT30:
3294 case R_SPARC_HIPLT22:
3295 case R_SPARC_LOPLT10:
3296 case R_SPARC_PCPLT32:
3297 case R_SPARC_PCPLT22:
3298 case R_SPARC_PCPLT10:
3299 r_sparc_wplt30:
3300 /* Relocation is to the entry for this symbol in the
3301 procedure linkage table. */
3302
3303 if (! ABI_64_P (output_bfd))
3304 {
3305 /* The Solaris native assembler will generate a WPLT30 reloc
3306 for a local symbol if you assemble a call from one
3307 section to another when using -K pic. We treat it as
3308 WDISP30. */
3309 if (h == NULL)
3310 break;
3311 }
3312 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3313 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3314 break;
3315 else
3316 {
3317 BFD_ASSERT (h != NULL);
3318 }
3319
3320 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3321 {
3322 /* We didn't make a PLT entry for this symbol. This
3323 happens when statically linking PIC code, or when
3324 using -Bsymbolic. */
3325 break;
3326 }
3327
3328 relocation = (htab->elf.splt->output_section->vma
3329 + htab->elf.splt->output_offset
3330 + h->plt.offset);
3331 unresolved_reloc = FALSE;
3332 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3333 {
3334 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3335 is_plt = TRUE;
3336 goto r_sparc_plt32;
3337 }
3338 break;
3339
3340 case R_SPARC_PC10:
3341 case R_SPARC_PC22:
3342 case R_SPARC_PC_HH22:
3343 case R_SPARC_PC_HM10:
3344 case R_SPARC_PC_LM22:
3345 if (h != NULL
3346 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3347 break;
3348 /* Fall through. */
3349 case R_SPARC_DISP8:
3350 case R_SPARC_DISP16:
3351 case R_SPARC_DISP32:
3352 case R_SPARC_DISP64:
3353 case R_SPARC_WDISP30:
3354 case R_SPARC_WDISP22:
3355 case R_SPARC_WDISP19:
3356 case R_SPARC_WDISP16:
3357 case R_SPARC_WDISP10:
3358 case R_SPARC_8:
3359 case R_SPARC_16:
3360 case R_SPARC_32:
3361 case R_SPARC_HI22:
3362 case R_SPARC_22:
3363 case R_SPARC_13:
3364 case R_SPARC_LO10:
3365 case R_SPARC_UA16:
3366 case R_SPARC_UA32:
3367 case R_SPARC_10:
3368 case R_SPARC_11:
3369 case R_SPARC_64:
3370 case R_SPARC_OLO10:
3371 case R_SPARC_HH22:
3372 case R_SPARC_HM10:
3373 case R_SPARC_LM22:
3374 case R_SPARC_7:
3375 case R_SPARC_5:
3376 case R_SPARC_6:
3377 case R_SPARC_HIX22:
3378 case R_SPARC_LOX10:
3379 case R_SPARC_H44:
3380 case R_SPARC_M44:
3381 case R_SPARC_L44:
3382 case R_SPARC_H34:
3383 case R_SPARC_UA64:
3384 r_sparc_plt32:
3385 if ((input_section->flags & SEC_ALLOC) == 0
3386 || is_vxworks_tls)
3387 break;
3388
3389 if ((bfd_link_pic (info)
3390 && (h == NULL
3391 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3392 || h->root.type != bfd_link_hash_undefweak)
3393 && (! howto->pc_relative
3394 || !SYMBOL_CALLS_LOCAL (info, h)))
3395 || (!bfd_link_pic (info)
3396 && h != NULL
3397 && h->dynindx != -1
3398 && !h->non_got_ref
3399 && ((h->def_dynamic
3400 && !h->def_regular)
3401 || h->root.type == bfd_link_hash_undefweak
3402 || h->root.type == bfd_link_hash_undefined)))
3403 {
3404 Elf_Internal_Rela outrel;
3405 bfd_boolean skip, relocate = FALSE;
3406
3407 /* When generating a shared object, these relocations
3408 are copied into the output file to be resolved at run
3409 time. */
3410
3411 BFD_ASSERT (sreloc != NULL);
3412
3413 skip = FALSE;
3414
3415 outrel.r_offset =
3416 _bfd_elf_section_offset (output_bfd, info, input_section,
3417 rel->r_offset);
3418 if (outrel.r_offset == (bfd_vma) -1)
3419 skip = TRUE;
3420 else if (outrel.r_offset == (bfd_vma) -2)
3421 skip = TRUE, relocate = TRUE;
3422 outrel.r_offset += (input_section->output_section->vma
3423 + input_section->output_offset);
3424
3425 /* Optimize unaligned reloc usage now that we know where
3426 it finally resides. */
3427 switch (r_type)
3428 {
3429 case R_SPARC_16:
3430 if (outrel.r_offset & 1)
3431 r_type = R_SPARC_UA16;
3432 break;
3433 case R_SPARC_UA16:
3434 if (!(outrel.r_offset & 1))
3435 r_type = R_SPARC_16;
3436 break;
3437 case R_SPARC_32:
3438 if (outrel.r_offset & 3)
3439 r_type = R_SPARC_UA32;
3440 break;
3441 case R_SPARC_UA32:
3442 if (!(outrel.r_offset & 3))
3443 r_type = R_SPARC_32;
3444 break;
3445 case R_SPARC_64:
3446 if (outrel.r_offset & 7)
3447 r_type = R_SPARC_UA64;
3448 break;
3449 case R_SPARC_UA64:
3450 if (!(outrel.r_offset & 7))
3451 r_type = R_SPARC_64;
3452 break;
3453 case R_SPARC_DISP8:
3454 case R_SPARC_DISP16:
3455 case R_SPARC_DISP32:
3456 case R_SPARC_DISP64:
3457 /* If the symbol is not dynamic, we should not keep
3458 a dynamic relocation. But an .rela.* slot has been
3459 allocated for it, output R_SPARC_NONE.
3460 FIXME: Add code tracking needed dynamic relocs as
3461 e.g. i386 has. */
3462 if (h->dynindx == -1)
3463 skip = TRUE, relocate = TRUE;
3464 break;
3465 }
3466
3467 if (skip)
3468 memset (&outrel, 0, sizeof outrel);
3469 /* h->dynindx may be -1 if the symbol was marked to
3470 become local. */
3471 else if (h != NULL
3472 && h->dynindx != -1
3473 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3474 || !bfd_link_pic (info)
3475 || !SYMBOLIC_BIND (info, h)
3476 || !h->def_regular))
3477 {
3478 BFD_ASSERT (h->dynindx != -1);
3479 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3480 outrel.r_addend = rel->r_addend;
3481 }
3482 else
3483 {
3484 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3485 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3486 {
3487 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3488 0, R_SPARC_RELATIVE);
3489 outrel.r_addend = relocation + rel->r_addend;
3490 }
3491 else
3492 {
3493 long indx;
3494
3495 outrel.r_addend = relocation + rel->r_addend;
3496
3497 if (is_plt)
3498 sec = htab->elf.splt;
3499
3500 if (bfd_is_abs_section (sec))
3501 indx = 0;
3502 else if (sec == NULL || sec->owner == NULL)
3503 {
3504 bfd_set_error (bfd_error_bad_value);
3505 return FALSE;
3506 }
3507 else
3508 {
3509 asection *osec;
3510
3511 /* We are turning this relocation into one
3512 against a section symbol. It would be
3513 proper to subtract the symbol's value,
3514 osec->vma, from the emitted reloc addend,
3515 but ld.so expects buggy relocs. */
3516 osec = sec->output_section;
3517 indx = elf_section_data (osec)->dynindx;
3518
3519 if (indx == 0)
3520 {
3521 osec = htab->elf.text_index_section;
3522 indx = elf_section_data (osec)->dynindx;
3523 }
3524
3525 /* FIXME: we really should be able to link non-pic
3526 shared libraries. */
3527 if (indx == 0)
3528 {
3529 BFD_FAIL ();
3530 (*_bfd_error_handler)
3531 (_("%B: probably compiled without -fPIC?"),
3532 input_bfd);
3533 bfd_set_error (bfd_error_bad_value);
3534 return FALSE;
3535 }
3536 }
3537
3538 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3539 r_type);
3540 }
3541 }
3542
3543 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3544
3545 /* This reloc will be computed at runtime, so there's no
3546 need to do anything now. */
3547 if (! relocate)
3548 continue;
3549 }
3550 break;
3551
3552 case R_SPARC_TLS_GD_HI22:
3553 if (! ABI_64_P (input_bfd)
3554 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3555 {
3556 /* R_SPARC_REV32 used the same reloc number as
3557 R_SPARC_TLS_GD_HI22. */
3558 r_type = R_SPARC_REV32;
3559 break;
3560 }
3561 /* Fall through */
3562
3563 case R_SPARC_TLS_GD_LO10:
3564 case R_SPARC_TLS_IE_HI22:
3565 case R_SPARC_TLS_IE_LO10:
3566 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3567 tls_type = GOT_UNKNOWN;
3568 if (h == NULL && local_got_offsets)
3569 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3570 else if (h != NULL)
3571 {
3572 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3573 if (!bfd_link_pic (info)
3574 && h->dynindx == -1
3575 && tls_type == GOT_TLS_IE)
3576 switch (SPARC_ELF_R_TYPE (rel->r_info))
3577 {
3578 case R_SPARC_TLS_GD_HI22:
3579 case R_SPARC_TLS_IE_HI22:
3580 r_type = R_SPARC_TLS_LE_HIX22;
3581 break;
3582 default:
3583 r_type = R_SPARC_TLS_LE_LOX10;
3584 break;
3585 }
3586 }
3587 if (tls_type == GOT_TLS_IE)
3588 switch (r_type)
3589 {
3590 case R_SPARC_TLS_GD_HI22:
3591 r_type = R_SPARC_TLS_IE_HI22;
3592 break;
3593 case R_SPARC_TLS_GD_LO10:
3594 r_type = R_SPARC_TLS_IE_LO10;
3595 break;
3596 }
3597
3598 if (r_type == R_SPARC_TLS_LE_HIX22)
3599 {
3600 relocation = tpoff (info, relocation);
3601 break;
3602 }
3603 if (r_type == R_SPARC_TLS_LE_LOX10)
3604 {
3605 /* Change add into xor. */
3606 relocation = tpoff (info, relocation);
3607 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3608 contents + rel->r_offset)
3609 | 0x80182000), contents + rel->r_offset);
3610 break;
3611 }
3612
3613 if (h != NULL)
3614 {
3615 off = h->got.offset;
3616 h->got.offset |= 1;
3617 }
3618 else
3619 {
3620 BFD_ASSERT (local_got_offsets != NULL);
3621 off = local_got_offsets[r_symndx];
3622 local_got_offsets[r_symndx] |= 1;
3623 }
3624
3625 r_sparc_tlsldm:
3626 if (htab->elf.sgot == NULL)
3627 abort ();
3628
3629 if ((off & 1) != 0)
3630 off &= ~1;
3631 else
3632 {
3633 Elf_Internal_Rela outrel;
3634 int dr_type, indx;
3635
3636 if (htab->elf.srelgot == NULL)
3637 abort ();
3638
3639 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3640 htab->elf.sgot->contents + off);
3641 outrel.r_offset = (htab->elf.sgot->output_section->vma
3642 + htab->elf.sgot->output_offset + off);
3643 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3644 if (r_type == R_SPARC_TLS_IE_HI22
3645 || r_type == R_SPARC_TLS_IE_LO10)
3646 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3647 else
3648 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3649 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3650 outrel.r_addend = relocation - dtpoff_base (info);
3651 else
3652 outrel.r_addend = 0;
3653 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3654 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3655
3656 if (r_type == R_SPARC_TLS_GD_HI22
3657 || r_type == R_SPARC_TLS_GD_LO10)
3658 {
3659 if (indx == 0)
3660 {
3661 BFD_ASSERT (! unresolved_reloc);
3662 SPARC_ELF_PUT_WORD (htab, output_bfd,
3663 relocation - dtpoff_base (info),
3664 (htab->elf.sgot->contents + off
3665 + SPARC_ELF_WORD_BYTES (htab)));
3666 }
3667 else
3668 {
3669 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3670 (htab->elf.sgot->contents + off
3671 + SPARC_ELF_WORD_BYTES (htab)));
3672 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3673 SPARC_ELF_DTPOFF_RELOC (htab));
3674 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3675 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3676 &outrel);
3677 }
3678 }
3679 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3680 {
3681 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3682 (htab->elf.sgot->contents + off
3683 + SPARC_ELF_WORD_BYTES (htab)));
3684 }
3685 }
3686
3687 if (off >= (bfd_vma) -2)
3688 abort ();
3689
3690 relocation = htab->elf.sgot->output_offset + off - got_base;
3691 unresolved_reloc = FALSE;
3692 howto = _bfd_sparc_elf_howto_table + r_type;
3693 break;
3694
3695 case R_SPARC_TLS_LDM_HI22:
3696 case R_SPARC_TLS_LDM_LO10:
3697 if (! bfd_link_pic (info))
3698 {
3699 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3700 continue;
3701 }
3702 off = htab->tls_ldm_got.offset;
3703 htab->tls_ldm_got.offset |= 1;
3704 goto r_sparc_tlsldm;
3705
3706 case R_SPARC_TLS_LDO_HIX22:
3707 case R_SPARC_TLS_LDO_LOX10:
3708 if (bfd_link_pic (info))
3709 {
3710 relocation -= dtpoff_base (info);
3711 break;
3712 }
3713
3714 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3715 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3716 /* Fall through. */
3717
3718 case R_SPARC_TLS_LE_HIX22:
3719 case R_SPARC_TLS_LE_LOX10:
3720 if (bfd_link_pic (info))
3721 {
3722 Elf_Internal_Rela outrel;
3723 bfd_boolean skip;
3724
3725 BFD_ASSERT (sreloc != NULL);
3726 skip = FALSE;
3727 outrel.r_offset =
3728 _bfd_elf_section_offset (output_bfd, info, input_section,
3729 rel->r_offset);
3730 if (outrel.r_offset == (bfd_vma) -1)
3731 skip = TRUE;
3732 else if (outrel.r_offset == (bfd_vma) -2)
3733 skip = TRUE;
3734 outrel.r_offset += (input_section->output_section->vma
3735 + input_section->output_offset);
3736 if (skip)
3737 memset (&outrel, 0, sizeof outrel);
3738 else
3739 {
3740 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3741 outrel.r_addend = relocation - dtpoff_base (info)
3742 + rel->r_addend;
3743 }
3744
3745 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3746 continue;
3747 }
3748 relocation = tpoff (info, relocation);
3749 break;
3750
3751 case R_SPARC_TLS_LDM_CALL:
3752 if (! bfd_link_pic (info))
3753 {
3754 /* mov %g0, %o0 */
3755 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3756 continue;
3757 }
3758 /* Fall through */
3759
3760 case R_SPARC_TLS_GD_CALL:
3761 tls_type = GOT_UNKNOWN;
3762 if (h == NULL && local_got_offsets)
3763 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3764 else if (h != NULL)
3765 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3766 if (! bfd_link_pic (info)
3767 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3768 {
3769 Elf_Internal_Rela *rel2;
3770 bfd_vma insn;
3771
3772 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3773 {
3774 /* GD -> LE */
3775 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3776 continue;
3777 }
3778
3779 /* GD -> IE */
3780 if (rel + 1 < relend
3781 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3782 && rel[1].r_offset == rel->r_offset + 4
3783 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3784 && (((insn = bfd_get_32 (input_bfd,
3785 contents + rel[1].r_offset))
3786 >> 25) & 0x1f) == 8)
3787 {
3788 /* We have
3789 call __tls_get_addr, %tgd_call(foo)
3790 add %reg1, %reg2, %o0, %tgd_add(foo)
3791 and change it into IE:
3792 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3793 add %g7, %o0, %o0, %tie_add(foo).
3794 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3795 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3796 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3797 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3798 contents + rel->r_offset);
3799 bfd_put_32 (output_bfd, 0x9001c008,
3800 contents + rel->r_offset + 4);
3801 rel++;
3802 continue;
3803 }
3804
3805 /* We cannot just overwrite the delay slot instruction,
3806 as it might be what puts the %o0 argument to
3807 __tls_get_addr into place. So we have to transpose
3808 the delay slot with the add we patch in. */
3809 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3810 bfd_put_32 (output_bfd, insn,
3811 contents + rel->r_offset);
3812 bfd_put_32 (output_bfd, 0x9001c008,
3813 contents + rel->r_offset + 4);
3814
3815 rel2 = rel;
3816 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3817 rel->r_offset + 4))
3818 != NULL)
3819 {
3820 /* If the instruction we moved has a relocation attached to
3821 it, adjust the offset so that it will apply to the correct
3822 instruction. */
3823 rel2->r_offset -= 4;
3824 }
3825 continue;
3826 }
3827
3828 h = (struct elf_link_hash_entry *)
3829 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3830 FALSE, TRUE);
3831 BFD_ASSERT (h != NULL);
3832 r_type = R_SPARC_WPLT30;
3833 howto = _bfd_sparc_elf_howto_table + r_type;
3834 goto r_sparc_wplt30;
3835
3836 case R_SPARC_TLS_GD_ADD:
3837 tls_type = GOT_UNKNOWN;
3838 if (h == NULL && local_got_offsets)
3839 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3840 else if (h != NULL)
3841 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3842 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE)
3843 {
3844 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3845 changed into IE:
3846 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3847 or LE:
3848 add %g7, %reg2, %reg3. */
3849 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3850 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info))
3851 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3852 else
3853 relocation = (insn & ~0x7c000) | 0x1c000;
3854 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3855 }
3856 continue;
3857
3858 case R_SPARC_TLS_LDM_ADD:
3859 if (! bfd_link_pic (info))
3860 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3861 continue;
3862
3863 case R_SPARC_TLS_LDO_ADD:
3864 if (! bfd_link_pic (info))
3865 {
3866 /* Change rs1 into %g7. */
3867 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3868 insn = (insn & ~0x7c000) | 0x1c000;
3869 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3870 }
3871 continue;
3872
3873 case R_SPARC_TLS_IE_LD:
3874 case R_SPARC_TLS_IE_LDX:
3875 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3876 {
3877 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3878 int rs2 = insn & 0x1f;
3879 int rd = (insn >> 25) & 0x1f;
3880
3881 if (rs2 == rd)
3882 relocation = SPARC_NOP;
3883 else
3884 relocation = 0x80100000 | (insn & 0x3e00001f);
3885 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3886 }
3887 continue;
3888
3889 case R_SPARC_TLS_IE_ADD:
3890 /* Totally useless relocation. */
3891 continue;
3892
3893 case R_SPARC_TLS_DTPOFF32:
3894 case R_SPARC_TLS_DTPOFF64:
3895 relocation -= dtpoff_base (info);
3896 break;
3897
3898 default:
3899 break;
3900 }
3901
3902 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3903 because such sections are not SEC_ALLOC and thus ld.so will
3904 not process them. */
3905 if (unresolved_reloc
3906 && !((input_section->flags & SEC_DEBUGGING) != 0
3907 && h->def_dynamic)
3908 && _bfd_elf_section_offset (output_bfd, info, input_section,
3909 rel->r_offset) != (bfd_vma) -1)
3910 (*_bfd_error_handler)
3911 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3912 input_bfd,
3913 input_section,
3914 (long) rel->r_offset,
3915 howto->name,
3916 h->root.root.string);
3917
3918 r = bfd_reloc_continue;
3919 if (r_type == R_SPARC_OLO10)
3920 {
3921 bfd_vma x;
3922
3923 if (! ABI_64_P (output_bfd))
3924 abort ();
3925
3926 relocation += rel->r_addend;
3927 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3928
3929 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3930 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3931 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3932
3933 r = bfd_check_overflow (howto->complain_on_overflow,
3934 howto->bitsize, howto->rightshift,
3935 bfd_arch_bits_per_address (input_bfd),
3936 relocation);
3937 }
3938 else if (r_type == R_SPARC_WDISP16)
3939 {
3940 bfd_vma x;
3941
3942 relocation += rel->r_addend;
3943 relocation -= (input_section->output_section->vma
3944 + input_section->output_offset);
3945 relocation -= rel->r_offset;
3946
3947 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3948 x |= ((((relocation >> 2) & 0xc000) << 6)
3949 | ((relocation >> 2) & 0x3fff));
3950 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3951
3952 r = bfd_check_overflow (howto->complain_on_overflow,
3953 howto->bitsize, howto->rightshift,
3954 bfd_arch_bits_per_address (input_bfd),
3955 relocation);
3956 }
3957 else if (r_type == R_SPARC_WDISP10)
3958 {
3959 bfd_vma x;
3960
3961 relocation += rel->r_addend;
3962 relocation -= (input_section->output_section->vma
3963 + input_section->output_offset);
3964 relocation -= rel->r_offset;
3965
3966 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3967 x |= ((((relocation >> 2) & 0x300) << 11)
3968 | (((relocation >> 2) & 0xff) << 5));
3969 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3970
3971 r = bfd_check_overflow (howto->complain_on_overflow,
3972 howto->bitsize, howto->rightshift,
3973 bfd_arch_bits_per_address (input_bfd),
3974 relocation);
3975 }
3976 else if (r_type == R_SPARC_REV32)
3977 {
3978 bfd_vma x;
3979
3980 relocation = relocation + rel->r_addend;
3981
3982 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3983 x = x + relocation;
3984 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3985 r = bfd_reloc_ok;
3986 }
3987 else if (r_type == R_SPARC_TLS_LDO_HIX22
3988 || r_type == R_SPARC_TLS_LE_HIX22)
3989 {
3990 bfd_vma x;
3991
3992 relocation += rel->r_addend;
3993 if (r_type == R_SPARC_TLS_LE_HIX22)
3994 relocation ^= MINUS_ONE;
3995
3996 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3997 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3998 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3999 r = bfd_reloc_ok;
4000 }
4001 else if (r_type == R_SPARC_TLS_LDO_LOX10
4002 || r_type == R_SPARC_TLS_LE_LOX10)
4003 {
4004 bfd_vma x;
4005
4006 relocation += rel->r_addend;
4007 relocation &= 0x3ff;
4008 if (r_type == R_SPARC_TLS_LE_LOX10)
4009 relocation |= 0x1c00;
4010
4011 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4012 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4013 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4014
4015 r = bfd_reloc_ok;
4016 }
4017 else if (r_type == R_SPARC_HIX22
4018 || r_type == R_SPARC_GOTDATA_HIX22)
4019 {
4020 bfd_vma x;
4021
4022 relocation += rel->r_addend;
4023 if (r_type == R_SPARC_HIX22
4024 || (bfd_signed_vma) relocation < 0)
4025 relocation = relocation ^ MINUS_ONE;
4026
4027 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4028 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4029 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4030
4031 r = bfd_check_overflow (howto->complain_on_overflow,
4032 howto->bitsize, howto->rightshift,
4033 bfd_arch_bits_per_address (input_bfd),
4034 relocation);
4035 }
4036 else if (r_type == R_SPARC_LOX10
4037 || r_type == R_SPARC_GOTDATA_LOX10)
4038 {
4039 bfd_vma x;
4040
4041 relocation += rel->r_addend;
4042 if (r_type == R_SPARC_LOX10
4043 || (bfd_signed_vma) relocation < 0)
4044 relocation = (relocation & 0x3ff) | 0x1c00;
4045 else
4046 relocation = (relocation & 0x3ff);
4047
4048 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4049 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4050 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4051
4052 r = bfd_reloc_ok;
4053 }
4054 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4055 && sec_do_relax (input_section)
4056 && rel->r_offset + 4 < input_section->size)
4057 {
4058 #define G0 0
4059 #define O7 15
4060 #define XCC (2 << 20)
4061 #define COND(x) (((x)&0xf)<<25)
4062 #define CONDA COND(0x8)
4063 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4064 #define INSN_BA (F2(0,2) | CONDA)
4065 #define INSN_OR F3(2, 0x2, 0)
4066 #define INSN_NOP F2(0,4)
4067
4068 bfd_vma x, y;
4069
4070 /* If the instruction is a call with either:
4071 restore
4072 arithmetic instruction with rd == %o7
4073 where rs1 != %o7 and rs2 if it is register != %o7
4074 then we can optimize if the call destination is near
4075 by changing the call into a branch always. */
4076 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4077 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4078 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4079 {
4080 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4081 || ((y & OP3(0x28)) == 0 /* arithmetic */
4082 && (y & RD(~0)) == RD(O7)))
4083 && (y & RS1(~0)) != RS1(O7)
4084 && ((y & F3I(~0))
4085 || (y & RS2(~0)) != RS2(O7)))
4086 {
4087 bfd_vma reloc;
4088
4089 reloc = relocation + rel->r_addend - rel->r_offset;
4090 reloc -= (input_section->output_section->vma
4091 + input_section->output_offset);
4092
4093 /* Ensure the branch fits into simm22. */
4094 if ((reloc & 3) == 0
4095 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4096 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4097 {
4098 reloc >>= 2;
4099
4100 /* Check whether it fits into simm19. */
4101 if (((reloc & 0x3c0000) == 0
4102 || (reloc & 0x3c0000) == 0x3c0000)
4103 && (ABI_64_P (output_bfd)
4104 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4105 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4106 else
4107 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4108 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4109 r = bfd_reloc_ok;
4110 if (rel->r_offset >= 4
4111 && (y & (0xffffffff ^ RS1(~0)))
4112 == (INSN_OR | RD(O7) | RS2(G0)))
4113 {
4114 bfd_vma z;
4115 unsigned int reg;
4116
4117 z = bfd_get_32 (input_bfd,
4118 contents + rel->r_offset - 4);
4119 if ((z & (0xffffffff ^ RD(~0)))
4120 != (INSN_OR | RS1(O7) | RS2(G0)))
4121 break;
4122
4123 /* The sequence was
4124 or %o7, %g0, %rN
4125 call foo
4126 or %rN, %g0, %o7
4127
4128 If call foo was replaced with ba, replace
4129 or %rN, %g0, %o7 with nop. */
4130
4131 reg = (y & RS1(~0)) >> 14;
4132 if (reg != ((z & RD(~0)) >> 25)
4133 || reg == G0 || reg == O7)
4134 break;
4135
4136 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4137 contents + rel->r_offset + 4);
4138 }
4139
4140 }
4141 }
4142 }
4143 }
4144
4145 if (r == bfd_reloc_continue)
4146 {
4147 do_relocation:
4148 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4149 contents, rel->r_offset,
4150 relocation, rel->r_addend);
4151 }
4152 if (r != bfd_reloc_ok)
4153 {
4154 switch (r)
4155 {
4156 default:
4157 case bfd_reloc_outofrange:
4158 abort ();
4159 case bfd_reloc_overflow:
4160 {
4161 const char *name;
4162
4163 /* The Solaris native linker silently disregards overflows.
4164 We don't, but this breaks stabs debugging info, whose
4165 relocations are only 32-bits wide. Ignore overflows in
4166 this case and also for discarded entries. */
4167 if ((r_type == R_SPARC_32
4168 || r_type == R_SPARC_UA32
4169 || r_type == R_SPARC_DISP32)
4170 && (((input_section->flags & SEC_DEBUGGING) != 0
4171 && strcmp (bfd_section_name (input_bfd,
4172 input_section),
4173 ".stab") == 0)
4174 || _bfd_elf_section_offset (output_bfd, info,
4175 input_section,
4176 rel->r_offset)
4177 == (bfd_vma)-1))
4178 break;
4179
4180 if (h != NULL)
4181 {
4182 /* Assume this is a call protected by other code that
4183 detect the symbol is undefined. If this is the case,
4184 we can safely ignore the overflow. If not, the
4185 program is hosed anyway, and a little warning isn't
4186 going to help. */
4187 if (h->root.type == bfd_link_hash_undefweak
4188 && howto->pc_relative)
4189 break;
4190
4191 name = NULL;
4192 }
4193 else
4194 {
4195 name = bfd_elf_string_from_elf_section (input_bfd,
4196 symtab_hdr->sh_link,
4197 sym->st_name);
4198 if (name == NULL)
4199 return FALSE;
4200 if (*name == '\0')
4201 name = bfd_section_name (input_bfd, sec);
4202 }
4203 (*info->callbacks->reloc_overflow)
4204 (info, (h ? &h->root : NULL), name, howto->name,
4205 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4206 }
4207 break;
4208 }
4209 }
4210 }
4211
4212 return TRUE;
4213 }
4214
4215 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4216 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4217 is the offset of the associated .got.plt entry from
4218 _GLOBAL_OFFSET_TABLE_. */
4219
4220 static void
4221 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4222 bfd_vma plt_offset, bfd_vma plt_index,
4223 bfd_vma got_offset)
4224 {
4225 bfd_vma got_base;
4226 const bfd_vma *plt_entry;
4227 struct _bfd_sparc_elf_link_hash_table *htab;
4228 bfd_byte *loc;
4229 Elf_Internal_Rela rela;
4230
4231 htab = _bfd_sparc_elf_hash_table (info);
4232 BFD_ASSERT (htab != NULL);
4233
4234 if (bfd_link_pic (info))
4235 {
4236 plt_entry = sparc_vxworks_shared_plt_entry;
4237 got_base = 0;
4238 }
4239 else
4240 {
4241 plt_entry = sparc_vxworks_exec_plt_entry;
4242 got_base = (htab->elf.hgot->root.u.def.value
4243 + htab->elf.hgot->root.u.def.section->output_offset
4244 + htab->elf.hgot->root.u.def.section->output_section->vma);
4245 }
4246
4247 /* Fill in the entry in the procedure linkage table. */
4248 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4249 htab->elf.splt->contents + plt_offset);
4250 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4251 htab->elf.splt->contents + plt_offset + 4);
4252 bfd_put_32 (output_bfd, plt_entry[2],
4253 htab->elf.splt->contents + plt_offset + 8);
4254 bfd_put_32 (output_bfd, plt_entry[3],
4255 htab->elf.splt->contents + plt_offset + 12);
4256 bfd_put_32 (output_bfd, plt_entry[4],
4257 htab->elf.splt->contents + plt_offset + 16);
4258 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4259 htab->elf.splt->contents + plt_offset + 20);
4260 /* PC-relative displacement for a branch to the start of
4261 the PLT section. */
4262 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4263 & 0x003fffff),
4264 htab->elf.splt->contents + plt_offset + 24);
4265 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4266 htab->elf.splt->contents + plt_offset + 28);
4267
4268 /* Fill in the .got.plt entry, pointing initially at the
4269 second half of the PLT entry. */
4270 BFD_ASSERT (htab->elf.sgotplt != NULL);
4271 bfd_put_32 (output_bfd,
4272 htab->elf.splt->output_section->vma
4273 + htab->elf.splt->output_offset
4274 + plt_offset + 20,
4275 htab->elf.sgotplt->contents + got_offset);
4276
4277 /* Add relocations to .rela.plt.unloaded. */
4278 if (!bfd_link_pic (info))
4279 {
4280 loc = (htab->srelplt2->contents
4281 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4282
4283 /* Relocate the initial sethi. */
4284 rela.r_offset = (htab->elf.splt->output_section->vma
4285 + htab->elf.splt->output_offset
4286 + plt_offset);
4287 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4288 rela.r_addend = got_offset;
4289 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4290 loc += sizeof (Elf32_External_Rela);
4291
4292 /* Likewise the following or. */
4293 rela.r_offset += 4;
4294 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4295 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4296 loc += sizeof (Elf32_External_Rela);
4297
4298 /* Relocate the .got.plt entry. */
4299 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4300 + htab->elf.sgotplt->output_offset
4301 + got_offset);
4302 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4303 rela.r_addend = plt_offset + 20;
4304 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4305 }
4306 }
4307
4308 /* Finish up dynamic symbol handling. We set the contents of various
4309 dynamic sections here. */
4310
4311 bfd_boolean
4312 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4313 struct bfd_link_info *info,
4314 struct elf_link_hash_entry *h,
4315 Elf_Internal_Sym *sym)
4316 {
4317 struct _bfd_sparc_elf_link_hash_table *htab;
4318 const struct elf_backend_data *bed;
4319
4320 htab = _bfd_sparc_elf_hash_table (info);
4321 BFD_ASSERT (htab != NULL);
4322 bed = get_elf_backend_data (output_bfd);
4323
4324 if (h->plt.offset != (bfd_vma) -1)
4325 {
4326 asection *splt;
4327 asection *srela;
4328 Elf_Internal_Rela rela;
4329 bfd_byte *loc;
4330 bfd_vma r_offset, got_offset;
4331 int rela_index;
4332
4333 /* When building a static executable, use .iplt and
4334 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4335 if (htab->elf.splt != NULL)
4336 {
4337 splt = htab->elf.splt;
4338 srela = htab->elf.srelplt;
4339 }
4340 else
4341 {
4342 splt = htab->elf.iplt;
4343 srela = htab->elf.irelplt;
4344 }
4345
4346 if (splt == NULL || srela == NULL)
4347 abort ();
4348
4349 /* Fill in the entry in the .rela.plt section. */
4350 if (htab->is_vxworks)
4351 {
4352 /* Work out the index of this PLT entry. */
4353 rela_index = ((h->plt.offset - htab->plt_header_size)
4354 / htab->plt_entry_size);
4355
4356 /* Calculate the offset of the associated .got.plt entry.
4357 The first three entries are reserved. */
4358 got_offset = (rela_index + 3) * 4;
4359
4360 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4361 rela_index, got_offset);
4362
4363
4364 /* On VxWorks, the relocation points to the .got.plt entry,
4365 not the .plt entry. */
4366 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4367 + htab->elf.sgotplt->output_offset
4368 + got_offset);
4369 rela.r_addend = 0;
4370 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4371 R_SPARC_JMP_SLOT);
4372 }
4373 else
4374 {
4375 bfd_boolean ifunc = FALSE;
4376
4377 /* Fill in the entry in the procedure linkage table. */
4378 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4379 h->plt.offset, splt->size,
4380 &r_offset);
4381
4382 if (h == NULL
4383 || h->dynindx == -1
4384 || ((bfd_link_executable (info)
4385 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4386 && h->def_regular
4387 && h->type == STT_GNU_IFUNC))
4388 {
4389 ifunc = TRUE;
4390 BFD_ASSERT (h == NULL
4391 || (h->type == STT_GNU_IFUNC
4392 && h->def_regular
4393 && (h->root.type == bfd_link_hash_defined
4394 || h->root.type == bfd_link_hash_defweak)));
4395 }
4396
4397 rela.r_offset = r_offset
4398 + (splt->output_section->vma + splt->output_offset);
4399 if (ABI_64_P (output_bfd)
4400 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4401 {
4402 if (ifunc)
4403 {
4404 rela.r_addend = (h->root.u.def.section->output_section->vma
4405 + h->root.u.def.section->output_offset
4406 + h->root.u.def.value);
4407 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4408 R_SPARC_IRELATIVE);
4409 }
4410 else
4411 {
4412 rela.r_addend = (-(h->plt.offset + 4)
4413 - splt->output_section->vma
4414 - splt->output_offset);
4415 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4416 R_SPARC_JMP_SLOT);
4417 }
4418 }
4419 else
4420 {
4421 if (ifunc)
4422 {
4423 rela.r_addend = (h->root.u.def.section->output_section->vma
4424 + h->root.u.def.section->output_offset
4425 + h->root.u.def.value);
4426 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4427 R_SPARC_JMP_IREL);
4428 }
4429 else
4430 {
4431 rela.r_addend = 0;
4432 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4433 R_SPARC_JMP_SLOT);
4434 }
4435 }
4436 }
4437
4438 /* Adjust for the first 4 reserved elements in the .plt section
4439 when setting the offset in the .rela.plt section.
4440 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4441 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4442
4443 loc = srela->contents;
4444 loc += rela_index * bed->s->sizeof_rela;
4445 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4446
4447 if (!h->def_regular)
4448 {
4449 /* Mark the symbol as undefined, rather than as defined in
4450 the .plt section. Leave the value alone. */
4451 sym->st_shndx = SHN_UNDEF;
4452 /* If the symbol is weak, we do need to clear the value.
4453 Otherwise, the PLT entry would provide a definition for
4454 the symbol even if the symbol wasn't defined anywhere,
4455 and so the symbol would never be NULL. */
4456 if (!h->ref_regular_nonweak)
4457 sym->st_value = 0;
4458 }
4459 }
4460
4461 if (h->got.offset != (bfd_vma) -1
4462 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4463 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4464 {
4465 asection *sgot;
4466 asection *srela;
4467 Elf_Internal_Rela rela;
4468
4469 /* This symbol has an entry in the GOT. Set it up. */
4470
4471 sgot = htab->elf.sgot;
4472 srela = htab->elf.srelgot;
4473 BFD_ASSERT (sgot != NULL && srela != NULL);
4474
4475 rela.r_offset = (sgot->output_section->vma
4476 + sgot->output_offset
4477 + (h->got.offset &~ (bfd_vma) 1));
4478
4479 /* If this is a -Bsymbolic link, and the symbol is defined
4480 locally, we just want to emit a RELATIVE reloc. Likewise if
4481 the symbol was forced to be local because of a version file.
4482 The entry in the global offset table will already have been
4483 initialized in the relocate_section function. */
4484 if (! bfd_link_pic (info)
4485 && h->type == STT_GNU_IFUNC
4486 && h->def_regular)
4487 {
4488 asection *plt;
4489
4490 /* We load the GOT entry with the PLT entry. */
4491 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4492 SPARC_ELF_PUT_WORD (htab, output_bfd,
4493 (plt->output_section->vma
4494 + plt->output_offset + h->plt.offset),
4495 htab->elf.sgot->contents
4496 + (h->got.offset & ~(bfd_vma) 1));
4497 return TRUE;
4498 }
4499 else if (bfd_link_pic (info)
4500 && SYMBOL_REFERENCES_LOCAL (info, h))
4501 {
4502 asection *sec = h->root.u.def.section;
4503 if (h->type == STT_GNU_IFUNC)
4504 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4505 else
4506 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4507 rela.r_addend = (h->root.u.def.value
4508 + sec->output_section->vma
4509 + sec->output_offset);
4510 }
4511 else
4512 {
4513 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4514 rela.r_addend = 0;
4515 }
4516
4517 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4518 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4519 sparc_elf_append_rela (output_bfd, srela, &rela);
4520 }
4521
4522 if (h->needs_copy)
4523 {
4524 asection *s;
4525 Elf_Internal_Rela rela;
4526
4527 /* This symbols needs a copy reloc. Set it up. */
4528 BFD_ASSERT (h->dynindx != -1);
4529
4530 s = bfd_get_linker_section (h->root.u.def.section->owner,
4531 ".rela.bss");
4532 BFD_ASSERT (s != NULL);
4533
4534 rela.r_offset = (h->root.u.def.value
4535 + h->root.u.def.section->output_section->vma
4536 + h->root.u.def.section->output_offset);
4537 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4538 rela.r_addend = 0;
4539 sparc_elf_append_rela (output_bfd, s, &rela);
4540 }
4541
4542 /* Mark some specially defined symbols as absolute. On VxWorks,
4543 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4544 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4545 if (sym != NULL
4546 && (h == htab->elf.hdynamic
4547 || (!htab->is_vxworks
4548 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4549 sym->st_shndx = SHN_ABS;
4550
4551 return TRUE;
4552 }
4553
4554 /* Finish up the dynamic sections. */
4555
4556 static bfd_boolean
4557 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4558 bfd *dynobj, asection *sdyn,
4559 asection *splt ATTRIBUTE_UNUSED)
4560 {
4561 struct _bfd_sparc_elf_link_hash_table *htab;
4562 const struct elf_backend_data *bed;
4563 bfd_byte *dyncon, *dynconend;
4564 size_t dynsize;
4565 int stt_regidx = -1;
4566 bfd_boolean abi_64_p;
4567
4568 htab = _bfd_sparc_elf_hash_table (info);
4569 BFD_ASSERT (htab != NULL);
4570 bed = get_elf_backend_data (output_bfd);
4571 dynsize = bed->s->sizeof_dyn;
4572 dynconend = sdyn->contents + sdyn->size;
4573 abi_64_p = ABI_64_P (output_bfd);
4574 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4575 {
4576 Elf_Internal_Dyn dyn;
4577 const char *name;
4578 bfd_boolean size;
4579
4580 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4581
4582 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4583 {
4584 /* On VxWorks, DT_RELASZ should not include the relocations
4585 in .rela.plt. */
4586 if (htab->elf.srelplt)
4587 {
4588 dyn.d_un.d_val -= htab->elf.srelplt->size;
4589 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4590 }
4591 }
4592 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4593 {
4594 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4595 not to the start of the PLT. */
4596 if (htab->elf.sgotplt)
4597 {
4598 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4599 + htab->elf.sgotplt->output_offset);
4600 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4601 }
4602 }
4603 else if (htab->is_vxworks
4604 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4605 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4606 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4607 {
4608 if (stt_regidx == -1)
4609 {
4610 stt_regidx =
4611 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4612 if (stt_regidx == -1)
4613 return FALSE;
4614 }
4615 dyn.d_un.d_val = stt_regidx++;
4616 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4617 }
4618 else
4619 {
4620 switch (dyn.d_tag)
4621 {
4622 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4623 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4624 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4625 default: name = NULL; size = FALSE; break;
4626 }
4627
4628 if (name != NULL)
4629 {
4630 asection *s;
4631
4632 s = bfd_get_linker_section (dynobj, name);
4633 if (s == NULL)
4634 dyn.d_un.d_val = 0;
4635 else
4636 {
4637 if (! size)
4638 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4639 else
4640 dyn.d_un.d_val = s->size;
4641 }
4642 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4643 }
4644 }
4645 }
4646 return TRUE;
4647 }
4648
4649 /* Install the first PLT entry in a VxWorks executable and make sure that
4650 .rela.plt.unloaded relocations have the correct symbol indexes. */
4651
4652 static void
4653 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4654 {
4655 struct _bfd_sparc_elf_link_hash_table *htab;
4656 Elf_Internal_Rela rela;
4657 bfd_vma got_base;
4658 bfd_byte *loc;
4659
4660 htab = _bfd_sparc_elf_hash_table (info);
4661 BFD_ASSERT (htab != NULL);
4662
4663 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4664 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4665 + htab->elf.hgot->root.u.def.section->output_offset
4666 + htab->elf.hgot->root.u.def.value);
4667
4668 /* Install the initial PLT entry. */
4669 bfd_put_32 (output_bfd,
4670 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4671 htab->elf.splt->contents);
4672 bfd_put_32 (output_bfd,
4673 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4674 htab->elf.splt->contents + 4);
4675 bfd_put_32 (output_bfd,
4676 sparc_vxworks_exec_plt0_entry[2],
4677 htab->elf.splt->contents + 8);
4678 bfd_put_32 (output_bfd,
4679 sparc_vxworks_exec_plt0_entry[3],
4680 htab->elf.splt->contents + 12);
4681 bfd_put_32 (output_bfd,
4682 sparc_vxworks_exec_plt0_entry[4],
4683 htab->elf.splt->contents + 16);
4684
4685 loc = htab->srelplt2->contents;
4686
4687 /* Add an unloaded relocation for the initial entry's "sethi". */
4688 rela.r_offset = (htab->elf.splt->output_section->vma
4689 + htab->elf.splt->output_offset);
4690 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4691 rela.r_addend = 8;
4692 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4693 loc += sizeof (Elf32_External_Rela);
4694
4695 /* Likewise the following "or". */
4696 rela.r_offset += 4;
4697 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4698 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4699 loc += sizeof (Elf32_External_Rela);
4700
4701 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4702 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4703 in which symbols were output. */
4704 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4705 {
4706 Elf_Internal_Rela rel;
4707
4708 /* The entry's initial "sethi" (against _G_O_T_). */
4709 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4710 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4711 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4712 loc += sizeof (Elf32_External_Rela);
4713
4714 /* The following "or" (also against _G_O_T_). */
4715 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4716 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4717 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4718 loc += sizeof (Elf32_External_Rela);
4719
4720 /* The .got.plt entry (against _P_L_T_). */
4721 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4722 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4723 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4724 loc += sizeof (Elf32_External_Rela);
4725 }
4726 }
4727
4728 /* Install the first PLT entry in a VxWorks shared object. */
4729
4730 static void
4731 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4732 {
4733 struct _bfd_sparc_elf_link_hash_table *htab;
4734 unsigned int i;
4735
4736 htab = _bfd_sparc_elf_hash_table (info);
4737 BFD_ASSERT (htab != NULL);
4738
4739 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4740 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4741 htab->elf.splt->contents + i * 4);
4742 }
4743
4744 /* Finish up local dynamic symbol handling. We set the contents of
4745 various dynamic sections here. */
4746
4747 static bfd_boolean
4748 finish_local_dynamic_symbol (void **slot, void *inf)
4749 {
4750 struct elf_link_hash_entry *h
4751 = (struct elf_link_hash_entry *) *slot;
4752 struct bfd_link_info *info
4753 = (struct bfd_link_info *) inf;
4754
4755 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4756 h, NULL);
4757 }
4758
4759 bfd_boolean
4760 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4761 {
4762 bfd *dynobj;
4763 asection *sdyn;
4764 struct _bfd_sparc_elf_link_hash_table *htab;
4765
4766 htab = _bfd_sparc_elf_hash_table (info);
4767 BFD_ASSERT (htab != NULL);
4768 dynobj = htab->elf.dynobj;
4769
4770 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4771
4772 if (elf_hash_table (info)->dynamic_sections_created)
4773 {
4774 asection *splt;
4775
4776 splt = htab->elf.splt;
4777 BFD_ASSERT (splt != NULL && sdyn != NULL);
4778
4779 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4780 return FALSE;
4781
4782 /* Initialize the contents of the .plt section. */
4783 if (splt->size > 0)
4784 {
4785 if (htab->is_vxworks)
4786 {
4787 if (bfd_link_pic (info))
4788 sparc_vxworks_finish_shared_plt (output_bfd, info);
4789 else
4790 sparc_vxworks_finish_exec_plt (output_bfd, info);
4791 }
4792 else
4793 {
4794 memset (splt->contents, 0, htab->plt_header_size);
4795 if (!ABI_64_P (output_bfd))
4796 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4797 splt->contents + splt->size - 4);
4798 }
4799 }
4800
4801 if (elf_section_data (splt->output_section) != NULL)
4802 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4803 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4804 ? 0 : htab->plt_entry_size);
4805 }
4806
4807 /* Set the first entry in the global offset table to the address of
4808 the dynamic section. */
4809 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4810 {
4811 bfd_vma val = (sdyn ?
4812 sdyn->output_section->vma + sdyn->output_offset :
4813 0);
4814
4815 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4816 }
4817
4818 if (htab->elf.sgot)
4819 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4820 SPARC_ELF_WORD_BYTES (htab);
4821
4822 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4823 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4824
4825 return TRUE;
4826 }
4827
4828 \f
4829 /* Set the right machine number for a SPARC ELF file. */
4830
4831 bfd_boolean
4832 _bfd_sparc_elf_object_p (bfd *abfd)
4833 {
4834 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4835 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4836 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4837
4838 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4839 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4840 | ELF_SPARC_HWCAP_VIS3
4841 | ELF_SPARC_HWCAP_HPC);
4842 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4843 | ELF_SPARC_HWCAP_DES
4844 | ELF_SPARC_HWCAP_KASUMI
4845 | ELF_SPARC_HWCAP_CAMELLIA
4846 | ELF_SPARC_HWCAP_MD5
4847 | ELF_SPARC_HWCAP_SHA1
4848 | ELF_SPARC_HWCAP_SHA256
4849 | ELF_SPARC_HWCAP_SHA512
4850 | ELF_SPARC_HWCAP_MPMUL
4851 | ELF_SPARC_HWCAP_MONT
4852 | ELF_SPARC_HWCAP_CRC32C
4853 | ELF_SPARC_HWCAP_CBCOND
4854 | ELF_SPARC_HWCAP_PAUSE);
4855 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4856 | ELF_SPARC_HWCAP_IMA);
4857 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4858 | ELF_SPARC_HWCAP2_MWAIT
4859 | ELF_SPARC_HWCAP2_XMPMUL
4860 | ELF_SPARC_HWCAP2_XMONT);
4861
4862 if (ABI_64_P (abfd))
4863 {
4864 unsigned long mach = bfd_mach_sparc_v9;
4865
4866 if (hwcaps2->i & v9m_hwcaps2_mask)
4867 mach = bfd_mach_sparc_v9m;
4868 else if (hwcaps->i & v9v_hwcaps_mask)
4869 mach = bfd_mach_sparc_v9v;
4870 else if (hwcaps->i & v9e_hwcaps_mask)
4871 mach = bfd_mach_sparc_v9e;
4872 else if (hwcaps->i & v9d_hwcaps_mask)
4873 mach = bfd_mach_sparc_v9d;
4874 else if (hwcaps->i & v9c_hwcaps_mask)
4875 mach = bfd_mach_sparc_v9c;
4876 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4877 mach = bfd_mach_sparc_v9b;
4878 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4879 mach = bfd_mach_sparc_v9a;
4880 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4881 }
4882 else
4883 {
4884 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4885 {
4886 if (hwcaps2->i & v9m_hwcaps2_mask)
4887 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4888 bfd_mach_sparc_v8plusm);
4889 else if (hwcaps->i & v9v_hwcaps_mask)
4890 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4891 bfd_mach_sparc_v8plusv);
4892 else if (hwcaps->i & v9e_hwcaps_mask)
4893 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4894 bfd_mach_sparc_v8pluse);
4895 else if (hwcaps->i & v9d_hwcaps_mask)
4896 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4897 bfd_mach_sparc_v8plusd);
4898 else if (hwcaps->i & v9c_hwcaps_mask)
4899 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4900 bfd_mach_sparc_v8plusc);
4901 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4902 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4903 bfd_mach_sparc_v8plusb);
4904 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4905 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4906 bfd_mach_sparc_v8plusa);
4907 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4908 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4909 bfd_mach_sparc_v8plus);
4910 else
4911 return FALSE;
4912 }
4913 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4914 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4915 bfd_mach_sparc_sparclite_le);
4916 else
4917 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4918 }
4919 }
4920
4921 /* Return address for Ith PLT stub in section PLT, for relocation REL
4922 or (bfd_vma) -1 if it should not be included. */
4923
4924 bfd_vma
4925 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4926 {
4927 if (ABI_64_P (plt->owner))
4928 {
4929 bfd_vma j;
4930
4931 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4932 if (i < PLT64_LARGE_THRESHOLD)
4933 return plt->vma + i * PLT64_ENTRY_SIZE;
4934
4935 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4936 i -= j;
4937 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4938 }
4939 else
4940 return rel->address;
4941 }
4942
4943 /* Merge backend specific data from an object file to the output
4944 object file when linking. */
4945
4946 bfd_boolean
4947 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4948 {
4949 obj_attribute *in_attr, *in_attrs;
4950 obj_attribute *out_attr, *out_attrs;
4951
4952 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4953 {
4954 /* This is the first object. Copy the attributes. */
4955 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4956
4957 /* Use the Tag_null value to indicate the attributes have been
4958 initialized. */
4959 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4960
4961 return TRUE;
4962 }
4963
4964 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4965 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4966
4967 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4968 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4969
4970 out_attr->i |= in_attr->i;
4971 out_attr->type = 1;
4972
4973 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4974 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4975
4976 out_attr->i |= in_attr->i;
4977 out_attr->type = 1;
4978
4979
4980 /* Merge Tag_compatibility attributes and any common GNU ones. */
4981 _bfd_elf_merge_object_attributes (ibfd, obfd);
4982
4983 return TRUE;
4984 }
A mirror of the official binutils-gdb repository