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opcodes: handle mach-o for thumb/arm disambiguation.
[binutils-gdb.git] / bfd / elfxx-sparc.c
blob3e4546126d7d25162b74a24e0583af70059e4d4f
1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2015 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 (! ABI_64_P (output_bfd)
2665 && !htab->is_vxworks
2666 && elf_hash_table (info)->dynamic_sections_created)
2667 {
2668 /* Make space for the trailing nop in .plt. */
2669 if (htab->elf.splt->size > 0)
2670 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2671
2672 /* If the .got section is more than 0x1000 bytes, we add
2673 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2674 bit relocations have a greater chance of working.
2675
2676 FIXME: Make this optimization work for 64-bit too. */
2677 if (htab->elf.sgot->size >= 0x1000
2678 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2679 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2680 }
2681
2682 /* The check_relocs and adjust_dynamic_symbol entry points have
2683 determined the sizes of the various dynamic sections. Allocate
2684 memory for them. */
2685 for (s = dynobj->sections; s != NULL; s = s->next)
2686 {
2687 if ((s->flags & SEC_LINKER_CREATED) == 0)
2688 continue;
2689
2690 if (s == htab->elf.splt
2691 || s == htab->elf.sgot
2692 || s == htab->sdynbss
2693 || s == htab->elf.iplt
2694 || s == htab->elf.sgotplt)
2695 {
2696 /* Strip this section if we don't need it; see the
2697 comment below. */
2698 }
2699 else if (CONST_STRNEQ (s->name, ".rela"))
2700 {
2701 if (s->size != 0)
2702 {
2703 /* We use the reloc_count field as a counter if we need
2704 to copy relocs into the output file. */
2705 s->reloc_count = 0;
2706 }
2707 }
2708 else
2709 {
2710 /* It's not one of our sections. */
2711 continue;
2712 }
2713
2714 if (s->size == 0)
2715 {
2716 /* If we don't need this section, strip it from the
2717 output file. This is mostly to handle .rela.bss and
2718 .rela.plt. We must create both sections in
2719 create_dynamic_sections, because they must be created
2720 before the linker maps input sections to output
2721 sections. The linker does that before
2722 adjust_dynamic_symbol is called, and it is that
2723 function which decides whether anything needs to go
2724 into these sections. */
2725 s->flags |= SEC_EXCLUDE;
2726 continue;
2727 }
2728
2729 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2730 continue;
2731
2732 /* Allocate memory for the section contents. Zero the memory
2733 for the benefit of .rela.plt, which has 4 unused entries
2734 at the beginning, and we don't want garbage. */
2735 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2736 if (s->contents == NULL)
2737 return FALSE;
2738 }
2739
2740 if (elf_hash_table (info)->dynamic_sections_created)
2741 {
2742 /* Add some entries to the .dynamic section. We fill in the
2743 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2744 must add the entries now so that we get the correct size for
2745 the .dynamic section. The DT_DEBUG entry is filled in by the
2746 dynamic linker and used by the debugger. */
2747 #define add_dynamic_entry(TAG, VAL) \
2748 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2749
2750 if (bfd_link_executable (info))
2751 {
2752 if (!add_dynamic_entry (DT_DEBUG, 0))
2753 return FALSE;
2754 }
2755
2756 if (htab->elf.srelplt->size != 0)
2757 {
2758 if (!add_dynamic_entry (DT_PLTGOT, 0)
2759 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2760 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2761 || !add_dynamic_entry (DT_JMPREL, 0))
2762 return FALSE;
2763 }
2764
2765 if (!add_dynamic_entry (DT_RELA, 0)
2766 || !add_dynamic_entry (DT_RELASZ, 0)
2767 || !add_dynamic_entry (DT_RELAENT,
2768 SPARC_ELF_RELA_BYTES (htab)))
2769 return FALSE;
2770
2771 /* If any dynamic relocs apply to a read-only section,
2772 then we need a DT_TEXTREL entry. */
2773 if ((info->flags & DF_TEXTREL) == 0)
2774 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2775
2776 if (info->flags & DF_TEXTREL)
2777 {
2778 if (!add_dynamic_entry (DT_TEXTREL, 0))
2779 return FALSE;
2780 }
2781
2782 if (ABI_64_P (output_bfd))
2783 {
2784 int reg;
2785 struct _bfd_sparc_elf_app_reg * app_regs;
2786 struct elf_strtab_hash *dynstr;
2787 struct elf_link_hash_table *eht = elf_hash_table (info);
2788
2789 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2790 entries if needed. */
2791 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2792 dynstr = eht->dynstr;
2793
2794 for (reg = 0; reg < 4; reg++)
2795 if (app_regs [reg].name != NULL)
2796 {
2797 struct elf_link_local_dynamic_entry *entry, *e;
2798
2799 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2800 return FALSE;
2801
2802 entry = (struct elf_link_local_dynamic_entry *)
2803 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2804 if (entry == NULL)
2805 return FALSE;
2806
2807 /* We cheat here a little bit: the symbol will not be local, so we
2808 put it at the end of the dynlocal linked list. We will fix it
2809 later on, as we have to fix other fields anyway. */
2810 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2811 entry->isym.st_size = 0;
2812 if (*app_regs [reg].name != '\0')
2813 entry->isym.st_name
2814 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2815 else
2816 entry->isym.st_name = 0;
2817 entry->isym.st_other = 0;
2818 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2819 STT_REGISTER);
2820 entry->isym.st_shndx = app_regs [reg].shndx;
2821 entry->isym.st_target_internal = 0;
2822 entry->next = NULL;
2823 entry->input_bfd = output_bfd;
2824 entry->input_indx = -1;
2825
2826 if (eht->dynlocal == NULL)
2827 eht->dynlocal = entry;
2828 else
2829 {
2830 for (e = eht->dynlocal; e->next; e = e->next)
2831 ;
2832 e->next = entry;
2833 }
2834 eht->dynsymcount++;
2835 }
2836 }
2837 if (htab->is_vxworks
2838 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2839 return FALSE;
2840 }
2841 #undef add_dynamic_entry
2842
2843 return TRUE;
2844 }
2845 \f
2846 bfd_boolean
2847 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2848 {
2849 if (!sec->used_by_bfd)
2850 {
2851 struct _bfd_sparc_elf_section_data *sdata;
2852 bfd_size_type amt = sizeof (*sdata);
2853
2854 sdata = bfd_zalloc (abfd, amt);
2855 if (sdata == NULL)
2856 return FALSE;
2857 sec->used_by_bfd = sdata;
2858 }
2859
2860 return _bfd_elf_new_section_hook (abfd, sec);
2861 }
2862
2863 bfd_boolean
2864 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2865 struct bfd_section *section,
2866 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2867 bfd_boolean *again)
2868 {
2869 if (bfd_link_relocatable (link_info))
2870 (*link_info->callbacks->einfo)
2871 (_("%P%F: --relax and -r may not be used together\n"));
2872
2873 *again = FALSE;
2874 sec_do_relax (section) = 1;
2875 return TRUE;
2876 }
2877 \f
2878 /* Return the base VMA address which should be subtracted from real addresses
2879 when resolving @dtpoff relocation.
2880 This is PT_TLS segment p_vaddr. */
2881
2882 static bfd_vma
2883 dtpoff_base (struct bfd_link_info *info)
2884 {
2885 /* If tls_sec is NULL, we should have signalled an error already. */
2886 if (elf_hash_table (info)->tls_sec == NULL)
2887 return 0;
2888 return elf_hash_table (info)->tls_sec->vma;
2889 }
2890
2891 /* Return the relocation value for @tpoff relocation
2892 if STT_TLS virtual address is ADDRESS. */
2893
2894 static bfd_vma
2895 tpoff (struct bfd_link_info *info, bfd_vma address)
2896 {
2897 struct elf_link_hash_table *htab = elf_hash_table (info);
2898 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2899 bfd_vma static_tls_size;
2900
2901 /* If tls_sec is NULL, we should have signalled an error already. */
2902 if (htab->tls_sec == NULL)
2903 return 0;
2904
2905 /* Consider special static TLS alignment requirements. */
2906 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2907 return address - static_tls_size - htab->tls_sec->vma;
2908 }
2909
2910 /* Return the relocation value for a %gdop relocation. */
2911
2912 static bfd_vma
2913 gdopoff (struct bfd_link_info *info, bfd_vma address)
2914 {
2915 struct elf_link_hash_table *htab = elf_hash_table (info);
2916 bfd_vma got_base;
2917
2918 got_base = (htab->hgot->root.u.def.value
2919 + htab->hgot->root.u.def.section->output_offset
2920 + htab->hgot->root.u.def.section->output_section->vma);
2921
2922 return address - got_base;
2923 }
2924
2925 /* Relocate a SPARC ELF section. */
2926
2927 bfd_boolean
2928 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2929 struct bfd_link_info *info,
2930 bfd *input_bfd,
2931 asection *input_section,
2932 bfd_byte *contents,
2933 Elf_Internal_Rela *relocs,
2934 Elf_Internal_Sym *local_syms,
2935 asection **local_sections)
2936 {
2937 struct _bfd_sparc_elf_link_hash_table *htab;
2938 Elf_Internal_Shdr *symtab_hdr;
2939 struct elf_link_hash_entry **sym_hashes;
2940 bfd_vma *local_got_offsets;
2941 bfd_vma got_base;
2942 asection *sreloc;
2943 Elf_Internal_Rela *rel;
2944 Elf_Internal_Rela *relend;
2945 int num_relocs;
2946 bfd_boolean is_vxworks_tls;
2947
2948 htab = _bfd_sparc_elf_hash_table (info);
2949 BFD_ASSERT (htab != NULL);
2950 symtab_hdr = &elf_symtab_hdr (input_bfd);
2951 sym_hashes = elf_sym_hashes (input_bfd);
2952 local_got_offsets = elf_local_got_offsets (input_bfd);
2953
2954 if (elf_hash_table (info)->hgot == NULL)
2955 got_base = 0;
2956 else
2957 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2958
2959 sreloc = elf_section_data (input_section)->sreloc;
2960 /* We have to handle relocations in vxworks .tls_vars sections
2961 specially, because the dynamic loader is 'weird'. */
2962 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
2963 && !strcmp (input_section->output_section->name,
2964 ".tls_vars"));
2965
2966 rel = relocs;
2967 if (ABI_64_P (output_bfd))
2968 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2969 else
2970 num_relocs = input_section->reloc_count;
2971 relend = relocs + num_relocs;
2972 for (; rel < relend; rel++)
2973 {
2974 int r_type, tls_type;
2975 reloc_howto_type *howto;
2976 unsigned long r_symndx;
2977 struct elf_link_hash_entry *h;
2978 Elf_Internal_Sym *sym;
2979 asection *sec;
2980 bfd_vma relocation, off;
2981 bfd_reloc_status_type r;
2982 bfd_boolean is_plt = FALSE;
2983 bfd_boolean unresolved_reloc;
2984
2985 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2986 if (r_type == R_SPARC_GNU_VTINHERIT
2987 || r_type == R_SPARC_GNU_VTENTRY)
2988 continue;
2989
2990 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2991 {
2992 bfd_set_error (bfd_error_bad_value);
2993 return FALSE;
2994 }
2995 howto = _bfd_sparc_elf_howto_table + r_type;
2996
2997 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2998 h = NULL;
2999 sym = NULL;
3000 sec = NULL;
3001 unresolved_reloc = FALSE;
3002 if (r_symndx < symtab_hdr->sh_info)
3003 {
3004 sym = local_syms + r_symndx;
3005 sec = local_sections[r_symndx];
3006 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3007
3008 if (!bfd_link_relocatable (info)
3009 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3010 {
3011 /* Relocate against local STT_GNU_IFUNC symbol. */
3012 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3013 rel, FALSE);
3014 if (h == NULL)
3015 abort ();
3016
3017 /* Set STT_GNU_IFUNC symbol value. */
3018 h->root.u.def.value = sym->st_value;
3019 h->root.u.def.section = sec;
3020 }
3021 }
3022 else
3023 {
3024 bfd_boolean warned, ignored;
3025
3026 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3027 r_symndx, symtab_hdr, sym_hashes,
3028 h, sec, relocation,
3029 unresolved_reloc, warned, ignored);
3030 if (warned)
3031 {
3032 /* To avoid generating warning messages about truncated
3033 relocations, set the relocation's address to be the same as
3034 the start of this section. */
3035 if (input_section->output_section != NULL)
3036 relocation = input_section->output_section->vma;
3037 else
3038 relocation = 0;
3039 }
3040 }
3041
3042 if (sec != NULL && discarded_section (sec))
3043 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3044 rel, 1, relend, howto, 0, contents);
3045
3046 if (bfd_link_relocatable (info))
3047 continue;
3048
3049 if (h != NULL
3050 && h->type == STT_GNU_IFUNC
3051 && h->def_regular)
3052 {
3053 asection *plt_sec;
3054 const char *name;
3055
3056 if ((input_section->flags & SEC_ALLOC) == 0
3057 || h->plt.offset == (bfd_vma) -1)
3058 abort ();
3059
3060 plt_sec = htab->elf.splt;
3061 if (! plt_sec)
3062 plt_sec =htab->elf.iplt;
3063
3064 switch (r_type)
3065 {
3066 case R_SPARC_GOTDATA_OP:
3067 continue;
3068
3069 case R_SPARC_GOTDATA_OP_HIX22:
3070 case R_SPARC_GOTDATA_OP_LOX10:
3071 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3072 ? R_SPARC_GOT22
3073 : R_SPARC_GOT10);
3074 howto = _bfd_sparc_elf_howto_table + r_type;
3075 /* Fall through. */
3076
3077 case R_SPARC_GOT10:
3078 case R_SPARC_GOT13:
3079 case R_SPARC_GOT22:
3080 if (htab->elf.sgot == NULL)
3081 abort ();
3082 off = h->got.offset;
3083 if (off == (bfd_vma) -1)
3084 abort();
3085 relocation = htab->elf.sgot->output_offset + off - got_base;
3086 goto do_relocation;
3087
3088 case R_SPARC_WPLT30:
3089 case R_SPARC_WDISP30:
3090 relocation = (plt_sec->output_section->vma
3091 + plt_sec->output_offset + h->plt.offset);
3092 goto do_relocation;
3093
3094 case R_SPARC_32:
3095 case R_SPARC_64:
3096 if (bfd_link_pic (info) && h->non_got_ref)
3097 {
3098 Elf_Internal_Rela outrel;
3099 bfd_vma offset;
3100
3101 offset = _bfd_elf_section_offset (output_bfd, info,
3102 input_section,
3103 rel->r_offset);
3104 if (offset == (bfd_vma) -1
3105 || offset == (bfd_vma) -2)
3106 abort();
3107
3108 outrel.r_offset = (input_section->output_section->vma
3109 + input_section->output_offset
3110 + offset);
3111
3112 if (h->dynindx == -1
3113 || h->forced_local
3114 || bfd_link_executable (info))
3115 {
3116 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3117 0, R_SPARC_IRELATIVE);
3118 outrel.r_addend = relocation + rel->r_addend;
3119 }
3120 else
3121 {
3122 if (h->dynindx == -1)
3123 abort();
3124 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3125 outrel.r_addend = rel->r_addend;
3126 }
3127
3128 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3129 continue;
3130 }
3131
3132 relocation = (plt_sec->output_section->vma
3133 + plt_sec->output_offset + h->plt.offset);
3134 goto do_relocation;
3135
3136 case R_SPARC_HI22:
3137 case R_SPARC_LO10:
3138 /* We should only see such relocs in static links. */
3139 if (bfd_link_pic (info))
3140 abort();
3141 relocation = (plt_sec->output_section->vma
3142 + plt_sec->output_offset + h->plt.offset);
3143 goto do_relocation;
3144
3145 default:
3146 if (h->root.root.string)
3147 name = h->root.root.string;
3148 else
3149 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3150 NULL);
3151 (*_bfd_error_handler)
3152 (_("%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 (r_type == R_SPARC_32 || r_type == R_SPARC_64)
3485 {
3486 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3487 0, R_SPARC_RELATIVE);
3488 outrel.r_addend = relocation + rel->r_addend;
3489 }
3490 else
3491 {
3492 long indx;
3493
3494 outrel.r_addend = relocation + rel->r_addend;
3495
3496 if (is_plt)
3497 sec = htab->elf.splt;
3498
3499 if (bfd_is_abs_section (sec))
3500 indx = 0;
3501 else if (sec == NULL || sec->owner == NULL)
3502 {
3503 bfd_set_error (bfd_error_bad_value);
3504 return FALSE;
3505 }
3506 else
3507 {
3508 asection *osec;
3509
3510 /* We are turning this relocation into one
3511 against a section symbol. It would be
3512 proper to subtract the symbol's value,
3513 osec->vma, from the emitted reloc addend,
3514 but ld.so expects buggy relocs. */
3515 osec = sec->output_section;
3516 indx = elf_section_data (osec)->dynindx;
3517
3518 if (indx == 0)
3519 {
3520 osec = htab->elf.text_index_section;
3521 indx = elf_section_data (osec)->dynindx;
3522 }
3523
3524 /* FIXME: we really should be able to link non-pic
3525 shared libraries. */
3526 if (indx == 0)
3527 {
3528 BFD_FAIL ();
3529 (*_bfd_error_handler)
3530 (_("%B: probably compiled without -fPIC?"),
3531 input_bfd);
3532 bfd_set_error (bfd_error_bad_value);
3533 return FALSE;
3534 }
3535 }
3536
3537 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3538 r_type);
3539 }
3540 }
3541
3542 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3543
3544 /* This reloc will be computed at runtime, so there's no
3545 need to do anything now. */
3546 if (! relocate)
3547 continue;
3548 }
3549 break;
3550
3551 case R_SPARC_TLS_GD_HI22:
3552 if (! ABI_64_P (input_bfd)
3553 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3554 {
3555 /* R_SPARC_REV32 used the same reloc number as
3556 R_SPARC_TLS_GD_HI22. */
3557 r_type = R_SPARC_REV32;
3558 break;
3559 }
3560 /* Fall through */
3561
3562 case R_SPARC_TLS_GD_LO10:
3563 case R_SPARC_TLS_IE_HI22:
3564 case R_SPARC_TLS_IE_LO10:
3565 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3566 tls_type = GOT_UNKNOWN;
3567 if (h == NULL && local_got_offsets)
3568 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3569 else if (h != NULL)
3570 {
3571 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3572 if (!bfd_link_pic (info)
3573 && h->dynindx == -1
3574 && tls_type == GOT_TLS_IE)
3575 switch (SPARC_ELF_R_TYPE (rel->r_info))
3576 {
3577 case R_SPARC_TLS_GD_HI22:
3578 case R_SPARC_TLS_IE_HI22:
3579 r_type = R_SPARC_TLS_LE_HIX22;
3580 break;
3581 default:
3582 r_type = R_SPARC_TLS_LE_LOX10;
3583 break;
3584 }
3585 }
3586 if (tls_type == GOT_TLS_IE)
3587 switch (r_type)
3588 {
3589 case R_SPARC_TLS_GD_HI22:
3590 r_type = R_SPARC_TLS_IE_HI22;
3591 break;
3592 case R_SPARC_TLS_GD_LO10:
3593 r_type = R_SPARC_TLS_IE_LO10;
3594 break;
3595 }
3596
3597 if (r_type == R_SPARC_TLS_LE_HIX22)
3598 {
3599 relocation = tpoff (info, relocation);
3600 break;
3601 }
3602 if (r_type == R_SPARC_TLS_LE_LOX10)
3603 {
3604 /* Change add into xor. */
3605 relocation = tpoff (info, relocation);
3606 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3607 contents + rel->r_offset)
3608 | 0x80182000), contents + rel->r_offset);
3609 break;
3610 }
3611
3612 if (h != NULL)
3613 {
3614 off = h->got.offset;
3615 h->got.offset |= 1;
3616 }
3617 else
3618 {
3619 BFD_ASSERT (local_got_offsets != NULL);
3620 off = local_got_offsets[r_symndx];
3621 local_got_offsets[r_symndx] |= 1;
3622 }
3623
3624 r_sparc_tlsldm:
3625 if (htab->elf.sgot == NULL)
3626 abort ();
3627
3628 if ((off & 1) != 0)
3629 off &= ~1;
3630 else
3631 {
3632 Elf_Internal_Rela outrel;
3633 int dr_type, indx;
3634
3635 if (htab->elf.srelgot == NULL)
3636 abort ();
3637
3638 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3639 htab->elf.sgot->contents + off);
3640 outrel.r_offset = (htab->elf.sgot->output_section->vma
3641 + htab->elf.sgot->output_offset + off);
3642 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3643 if (r_type == R_SPARC_TLS_IE_HI22
3644 || r_type == R_SPARC_TLS_IE_LO10)
3645 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3646 else
3647 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3648 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3649 outrel.r_addend = relocation - dtpoff_base (info);
3650 else
3651 outrel.r_addend = 0;
3652 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3653 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3654
3655 if (r_type == R_SPARC_TLS_GD_HI22
3656 || r_type == R_SPARC_TLS_GD_LO10)
3657 {
3658 if (indx == 0)
3659 {
3660 BFD_ASSERT (! unresolved_reloc);
3661 SPARC_ELF_PUT_WORD (htab, output_bfd,
3662 relocation - dtpoff_base (info),
3663 (htab->elf.sgot->contents + off
3664 + SPARC_ELF_WORD_BYTES (htab)));
3665 }
3666 else
3667 {
3668 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3669 (htab->elf.sgot->contents + off
3670 + SPARC_ELF_WORD_BYTES (htab)));
3671 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3672 SPARC_ELF_DTPOFF_RELOC (htab));
3673 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3674 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3675 &outrel);
3676 }
3677 }
3678 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3679 {
3680 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3681 (htab->elf.sgot->contents + off
3682 + SPARC_ELF_WORD_BYTES (htab)));
3683 }
3684 }
3685
3686 if (off >= (bfd_vma) -2)
3687 abort ();
3688
3689 relocation = htab->elf.sgot->output_offset + off - got_base;
3690 unresolved_reloc = FALSE;
3691 howto = _bfd_sparc_elf_howto_table + r_type;
3692 break;
3693
3694 case R_SPARC_TLS_LDM_HI22:
3695 case R_SPARC_TLS_LDM_LO10:
3696 if (! bfd_link_pic (info))
3697 {
3698 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3699 continue;
3700 }
3701 off = htab->tls_ldm_got.offset;
3702 htab->tls_ldm_got.offset |= 1;
3703 goto r_sparc_tlsldm;
3704
3705 case R_SPARC_TLS_LDO_HIX22:
3706 case R_SPARC_TLS_LDO_LOX10:
3707 if (bfd_link_pic (info))
3708 {
3709 relocation -= dtpoff_base (info);
3710 break;
3711 }
3712
3713 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3714 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3715 /* Fall through. */
3716
3717 case R_SPARC_TLS_LE_HIX22:
3718 case R_SPARC_TLS_LE_LOX10:
3719 if (bfd_link_pic (info))
3720 {
3721 Elf_Internal_Rela outrel;
3722 bfd_boolean skip;
3723
3724 BFD_ASSERT (sreloc != NULL);
3725 skip = FALSE;
3726 outrel.r_offset =
3727 _bfd_elf_section_offset (output_bfd, info, input_section,
3728 rel->r_offset);
3729 if (outrel.r_offset == (bfd_vma) -1)
3730 skip = TRUE;
3731 else if (outrel.r_offset == (bfd_vma) -2)
3732 skip = TRUE;
3733 outrel.r_offset += (input_section->output_section->vma
3734 + input_section->output_offset);
3735 if (skip)
3736 memset (&outrel, 0, sizeof outrel);
3737 else
3738 {
3739 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3740 outrel.r_addend = relocation - dtpoff_base (info)
3741 + rel->r_addend;
3742 }
3743
3744 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3745 continue;
3746 }
3747 relocation = tpoff (info, relocation);
3748 break;
3749
3750 case R_SPARC_TLS_LDM_CALL:
3751 if (! bfd_link_pic (info))
3752 {
3753 /* mov %g0, %o0 */
3754 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3755 continue;
3756 }
3757 /* Fall through */
3758
3759 case R_SPARC_TLS_GD_CALL:
3760 tls_type = GOT_UNKNOWN;
3761 if (h == NULL && local_got_offsets)
3762 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3763 else if (h != NULL)
3764 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3765 if (! bfd_link_pic (info)
3766 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3767 {
3768 Elf_Internal_Rela *rel2;
3769 bfd_vma insn;
3770
3771 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3772 {
3773 /* GD -> LE */
3774 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3775 continue;
3776 }
3777
3778 /* GD -> IE */
3779 if (rel + 1 < relend
3780 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3781 && rel[1].r_offset == rel->r_offset + 4
3782 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3783 && (((insn = bfd_get_32 (input_bfd,
3784 contents + rel[1].r_offset))
3785 >> 25) & 0x1f) == 8)
3786 {
3787 /* We have
3788 call __tls_get_addr, %tgd_call(foo)
3789 add %reg1, %reg2, %o0, %tgd_add(foo)
3790 and change it into IE:
3791 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3792 add %g7, %o0, %o0, %tie_add(foo).
3793 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3794 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3795 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3796 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3797 contents + rel->r_offset);
3798 bfd_put_32 (output_bfd, 0x9001c008,
3799 contents + rel->r_offset + 4);
3800 rel++;
3801 continue;
3802 }
3803
3804 /* We cannot just overwrite the delay slot instruction,
3805 as it might be what puts the %o0 argument to
3806 __tls_get_addr into place. So we have to transpose
3807 the delay slot with the add we patch in. */
3808 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3809 bfd_put_32 (output_bfd, insn,
3810 contents + rel->r_offset);
3811 bfd_put_32 (output_bfd, 0x9001c008,
3812 contents + rel->r_offset + 4);
3813
3814 rel2 = rel;
3815 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3816 rel->r_offset + 4))
3817 != NULL)
3818 {
3819 /* If the instruction we moved has a relocation attached to
3820 it, adjust the offset so that it will apply to the correct
3821 instruction. */
3822 rel2->r_offset -= 4;
3823 }
3824 continue;
3825 }
3826
3827 h = (struct elf_link_hash_entry *)
3828 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3829 FALSE, TRUE);
3830 BFD_ASSERT (h != NULL);
3831 r_type = R_SPARC_WPLT30;
3832 howto = _bfd_sparc_elf_howto_table + r_type;
3833 goto r_sparc_wplt30;
3834
3835 case R_SPARC_TLS_GD_ADD:
3836 tls_type = GOT_UNKNOWN;
3837 if (h == NULL && local_got_offsets)
3838 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3839 else if (h != NULL)
3840 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3841 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE)
3842 {
3843 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3844 changed into IE:
3845 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3846 or LE:
3847 add %g7, %reg2, %reg3. */
3848 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3849 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info))
3850 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3851 else
3852 relocation = (insn & ~0x7c000) | 0x1c000;
3853 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3854 }
3855 continue;
3856
3857 case R_SPARC_TLS_LDM_ADD:
3858 if (! bfd_link_pic (info))
3859 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3860 continue;
3861
3862 case R_SPARC_TLS_LDO_ADD:
3863 if (! bfd_link_pic (info))
3864 {
3865 /* Change rs1 into %g7. */
3866 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3867 insn = (insn & ~0x7c000) | 0x1c000;
3868 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3869 }
3870 continue;
3871
3872 case R_SPARC_TLS_IE_LD:
3873 case R_SPARC_TLS_IE_LDX:
3874 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3875 {
3876 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3877 int rs2 = insn & 0x1f;
3878 int rd = (insn >> 25) & 0x1f;
3879
3880 if (rs2 == rd)
3881 relocation = SPARC_NOP;
3882 else
3883 relocation = 0x80100000 | (insn & 0x3e00001f);
3884 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3885 }
3886 continue;
3887
3888 case R_SPARC_TLS_IE_ADD:
3889 /* Totally useless relocation. */
3890 continue;
3891
3892 case R_SPARC_TLS_DTPOFF32:
3893 case R_SPARC_TLS_DTPOFF64:
3894 relocation -= dtpoff_base (info);
3895 break;
3896
3897 default:
3898 break;
3899 }
3900
3901 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3902 because such sections are not SEC_ALLOC and thus ld.so will
3903 not process them. */
3904 if (unresolved_reloc
3905 && !((input_section->flags & SEC_DEBUGGING) != 0
3906 && h->def_dynamic)
3907 && _bfd_elf_section_offset (output_bfd, info, input_section,
3908 rel->r_offset) != (bfd_vma) -1)
3909 (*_bfd_error_handler)
3910 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3911 input_bfd,
3912 input_section,
3913 (long) rel->r_offset,
3914 howto->name,
3915 h->root.root.string);
3916
3917 r = bfd_reloc_continue;
3918 if (r_type == R_SPARC_OLO10)
3919 {
3920 bfd_vma x;
3921
3922 if (! ABI_64_P (output_bfd))
3923 abort ();
3924
3925 relocation += rel->r_addend;
3926 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3927
3928 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3929 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3930 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3931
3932 r = bfd_check_overflow (howto->complain_on_overflow,
3933 howto->bitsize, howto->rightshift,
3934 bfd_arch_bits_per_address (input_bfd),
3935 relocation);
3936 }
3937 else if (r_type == R_SPARC_WDISP16)
3938 {
3939 bfd_vma x;
3940
3941 relocation += rel->r_addend;
3942 relocation -= (input_section->output_section->vma
3943 + input_section->output_offset);
3944 relocation -= rel->r_offset;
3945
3946 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3947 x |= ((((relocation >> 2) & 0xc000) << 6)
3948 | ((relocation >> 2) & 0x3fff));
3949 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3950
3951 r = bfd_check_overflow (howto->complain_on_overflow,
3952 howto->bitsize, howto->rightshift,
3953 bfd_arch_bits_per_address (input_bfd),
3954 relocation);
3955 }
3956 else if (r_type == R_SPARC_WDISP10)
3957 {
3958 bfd_vma x;
3959
3960 relocation += rel->r_addend;
3961 relocation -= (input_section->output_section->vma
3962 + input_section->output_offset);
3963 relocation -= rel->r_offset;
3964
3965 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3966 x |= ((((relocation >> 2) & 0x300) << 11)
3967 | (((relocation >> 2) & 0xff) << 5));
3968 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3969
3970 r = bfd_check_overflow (howto->complain_on_overflow,
3971 howto->bitsize, howto->rightshift,
3972 bfd_arch_bits_per_address (input_bfd),
3973 relocation);
3974 }
3975 else if (r_type == R_SPARC_REV32)
3976 {
3977 bfd_vma x;
3978
3979 relocation = relocation + rel->r_addend;
3980
3981 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3982 x = x + relocation;
3983 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3984 r = bfd_reloc_ok;
3985 }
3986 else if (r_type == R_SPARC_TLS_LDO_HIX22
3987 || r_type == R_SPARC_TLS_LE_HIX22)
3988 {
3989 bfd_vma x;
3990
3991 relocation += rel->r_addend;
3992 if (r_type == R_SPARC_TLS_LE_HIX22)
3993 relocation ^= MINUS_ONE;
3994
3995 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3996 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3997 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3998 r = bfd_reloc_ok;
3999 }
4000 else if (r_type == R_SPARC_TLS_LDO_LOX10
4001 || r_type == R_SPARC_TLS_LE_LOX10)
4002 {
4003 bfd_vma x;
4004
4005 relocation += rel->r_addend;
4006 relocation &= 0x3ff;
4007 if (r_type == R_SPARC_TLS_LE_LOX10)
4008 relocation |= 0x1c00;
4009
4010 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4011 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4012 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4013
4014 r = bfd_reloc_ok;
4015 }
4016 else if (r_type == R_SPARC_HIX22
4017 || r_type == R_SPARC_GOTDATA_HIX22)
4018 {
4019 bfd_vma x;
4020
4021 relocation += rel->r_addend;
4022 if (r_type == R_SPARC_HIX22
4023 || (bfd_signed_vma) relocation < 0)
4024 relocation = relocation ^ MINUS_ONE;
4025
4026 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4027 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4028 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4029
4030 r = bfd_check_overflow (howto->complain_on_overflow,
4031 howto->bitsize, howto->rightshift,
4032 bfd_arch_bits_per_address (input_bfd),
4033 relocation);
4034 }
4035 else if (r_type == R_SPARC_LOX10
4036 || r_type == R_SPARC_GOTDATA_LOX10)
4037 {
4038 bfd_vma x;
4039
4040 relocation += rel->r_addend;
4041 if (r_type == R_SPARC_LOX10
4042 || (bfd_signed_vma) relocation < 0)
4043 relocation = (relocation & 0x3ff) | 0x1c00;
4044 else
4045 relocation = (relocation & 0x3ff);
4046
4047 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4048 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4049 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4050
4051 r = bfd_reloc_ok;
4052 }
4053 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4054 && sec_do_relax (input_section)
4055 && rel->r_offset + 4 < input_section->size)
4056 {
4057 #define G0 0
4058 #define O7 15
4059 #define XCC (2 << 20)
4060 #define COND(x) (((x)&0xf)<<25)
4061 #define CONDA COND(0x8)
4062 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4063 #define INSN_BA (F2(0,2) | CONDA)
4064 #define INSN_OR F3(2, 0x2, 0)
4065 #define INSN_NOP F2(0,4)
4066
4067 bfd_vma x, y;
4068
4069 /* If the instruction is a call with either:
4070 restore
4071 arithmetic instruction with rd == %o7
4072 where rs1 != %o7 and rs2 if it is register != %o7
4073 then we can optimize if the call destination is near
4074 by changing the call into a branch always. */
4075 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4076 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4077 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4078 {
4079 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4080 || ((y & OP3(0x28)) == 0 /* arithmetic */
4081 && (y & RD(~0)) == RD(O7)))
4082 && (y & RS1(~0)) != RS1(O7)
4083 && ((y & F3I(~0))
4084 || (y & RS2(~0)) != RS2(O7)))
4085 {
4086 bfd_vma reloc;
4087
4088 reloc = relocation + rel->r_addend - rel->r_offset;
4089 reloc -= (input_section->output_section->vma
4090 + input_section->output_offset);
4091
4092 /* Ensure the branch fits into simm22. */
4093 if ((reloc & 3) == 0
4094 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4095 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4096 {
4097 reloc >>= 2;
4098
4099 /* Check whether it fits into simm19. */
4100 if (((reloc & 0x3c0000) == 0
4101 || (reloc & 0x3c0000) == 0x3c0000)
4102 && (ABI_64_P (output_bfd)
4103 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4104 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4105 else
4106 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4107 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4108 r = bfd_reloc_ok;
4109 if (rel->r_offset >= 4
4110 && (y & (0xffffffff ^ RS1(~0)))
4111 == (INSN_OR | RD(O7) | RS2(G0)))
4112 {
4113 bfd_vma z;
4114 unsigned int reg;
4115
4116 z = bfd_get_32 (input_bfd,
4117 contents + rel->r_offset - 4);
4118 if ((z & (0xffffffff ^ RD(~0)))
4119 != (INSN_OR | RS1(O7) | RS2(G0)))
4120 break;
4121
4122 /* The sequence was
4123 or %o7, %g0, %rN
4124 call foo
4125 or %rN, %g0, %o7
4126
4127 If call foo was replaced with ba, replace
4128 or %rN, %g0, %o7 with nop. */
4129
4130 reg = (y & RS1(~0)) >> 14;
4131 if (reg != ((z & RD(~0)) >> 25)
4132 || reg == G0 || reg == O7)
4133 break;
4134
4135 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4136 contents + rel->r_offset + 4);
4137 }
4138
4139 }
4140 }
4141 }
4142 }
4143
4144 if (r == bfd_reloc_continue)
4145 {
4146 do_relocation:
4147 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4148 contents, rel->r_offset,
4149 relocation, rel->r_addend);
4150 }
4151 if (r != bfd_reloc_ok)
4152 {
4153 switch (r)
4154 {
4155 default:
4156 case bfd_reloc_outofrange:
4157 abort ();
4158 case bfd_reloc_overflow:
4159 {
4160 const char *name;
4161
4162 /* The Solaris native linker silently disregards overflows.
4163 We don't, but this breaks stabs debugging info, whose
4164 relocations are only 32-bits wide. Ignore overflows in
4165 this case and also for discarded entries. */
4166 if ((r_type == R_SPARC_32
4167 || r_type == R_SPARC_UA32
4168 || r_type == R_SPARC_DISP32)
4169 && (((input_section->flags & SEC_DEBUGGING) != 0
4170 && strcmp (bfd_section_name (input_bfd,
4171 input_section),
4172 ".stab") == 0)
4173 || _bfd_elf_section_offset (output_bfd, info,
4174 input_section,
4175 rel->r_offset)
4176 == (bfd_vma)-1))
4177 break;
4178
4179 if (h != NULL)
4180 {
4181 /* Assume this is a call protected by other code that
4182 detect the symbol is undefined. If this is the case,
4183 we can safely ignore the overflow. If not, the
4184 program is hosed anyway, and a little warning isn't
4185 going to help. */
4186 if (h->root.type == bfd_link_hash_undefweak
4187 && howto->pc_relative)
4188 break;
4189
4190 name = NULL;
4191 }
4192 else
4193 {
4194 name = bfd_elf_string_from_elf_section (input_bfd,
4195 symtab_hdr->sh_link,
4196 sym->st_name);
4197 if (name == NULL)
4198 return FALSE;
4199 if (*name == '\0')
4200 name = bfd_section_name (input_bfd, sec);
4201 }
4202 if (! ((*info->callbacks->reloc_overflow)
4203 (info, (h ? &h->root : NULL), name, howto->name,
4204 (bfd_vma) 0, input_bfd, input_section,
4205 rel->r_offset)))
4206 return FALSE;
4207 }
4208 break;
4209 }
4210 }
4211 }
4212
4213 return TRUE;
4214 }
4215
4216 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4217 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4218 is the offset of the associated .got.plt entry from
4219 _GLOBAL_OFFSET_TABLE_. */
4220
4221 static void
4222 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4223 bfd_vma plt_offset, bfd_vma plt_index,
4224 bfd_vma got_offset)
4225 {
4226 bfd_vma got_base;
4227 const bfd_vma *plt_entry;
4228 struct _bfd_sparc_elf_link_hash_table *htab;
4229 bfd_byte *loc;
4230 Elf_Internal_Rela rela;
4231
4232 htab = _bfd_sparc_elf_hash_table (info);
4233 BFD_ASSERT (htab != NULL);
4234
4235 if (bfd_link_pic (info))
4236 {
4237 plt_entry = sparc_vxworks_shared_plt_entry;
4238 got_base = 0;
4239 }
4240 else
4241 {
4242 plt_entry = sparc_vxworks_exec_plt_entry;
4243 got_base = (htab->elf.hgot->root.u.def.value
4244 + htab->elf.hgot->root.u.def.section->output_offset
4245 + htab->elf.hgot->root.u.def.section->output_section->vma);
4246 }
4247
4248 /* Fill in the entry in the procedure linkage table. */
4249 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4250 htab->elf.splt->contents + plt_offset);
4251 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4252 htab->elf.splt->contents + plt_offset + 4);
4253 bfd_put_32 (output_bfd, plt_entry[2],
4254 htab->elf.splt->contents + plt_offset + 8);
4255 bfd_put_32 (output_bfd, plt_entry[3],
4256 htab->elf.splt->contents + plt_offset + 12);
4257 bfd_put_32 (output_bfd, plt_entry[4],
4258 htab->elf.splt->contents + plt_offset + 16);
4259 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4260 htab->elf.splt->contents + plt_offset + 20);
4261 /* PC-relative displacement for a branch to the start of
4262 the PLT section. */
4263 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4264 & 0x003fffff),
4265 htab->elf.splt->contents + plt_offset + 24);
4266 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4267 htab->elf.splt->contents + plt_offset + 28);
4268
4269 /* Fill in the .got.plt entry, pointing initially at the
4270 second half of the PLT entry. */
4271 BFD_ASSERT (htab->elf.sgotplt != NULL);
4272 bfd_put_32 (output_bfd,
4273 htab->elf.splt->output_section->vma
4274 + htab->elf.splt->output_offset
4275 + plt_offset + 20,
4276 htab->elf.sgotplt->contents + got_offset);
4277
4278 /* Add relocations to .rela.plt.unloaded. */
4279 if (!bfd_link_pic (info))
4280 {
4281 loc = (htab->srelplt2->contents
4282 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4283
4284 /* Relocate the initial sethi. */
4285 rela.r_offset = (htab->elf.splt->output_section->vma
4286 + htab->elf.splt->output_offset
4287 + plt_offset);
4288 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4289 rela.r_addend = got_offset;
4290 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4291 loc += sizeof (Elf32_External_Rela);
4292
4293 /* Likewise the following or. */
4294 rela.r_offset += 4;
4295 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4296 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4297 loc += sizeof (Elf32_External_Rela);
4298
4299 /* Relocate the .got.plt entry. */
4300 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4301 + htab->elf.sgotplt->output_offset
4302 + got_offset);
4303 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4304 rela.r_addend = plt_offset + 20;
4305 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4306 }
4307 }
4308
4309 /* Finish up dynamic symbol handling. We set the contents of various
4310 dynamic sections here. */
4311
4312 bfd_boolean
4313 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4314 struct bfd_link_info *info,
4315 struct elf_link_hash_entry *h,
4316 Elf_Internal_Sym *sym)
4317 {
4318 struct _bfd_sparc_elf_link_hash_table *htab;
4319 const struct elf_backend_data *bed;
4320
4321 htab = _bfd_sparc_elf_hash_table (info);
4322 BFD_ASSERT (htab != NULL);
4323 bed = get_elf_backend_data (output_bfd);
4324
4325 if (h->plt.offset != (bfd_vma) -1)
4326 {
4327 asection *splt;
4328 asection *srela;
4329 Elf_Internal_Rela rela;
4330 bfd_byte *loc;
4331 bfd_vma r_offset, got_offset;
4332 int rela_index;
4333
4334 /* When building a static executable, use .iplt and
4335 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4336 if (htab->elf.splt != NULL)
4337 {
4338 splt = htab->elf.splt;
4339 srela = htab->elf.srelplt;
4340 }
4341 else
4342 {
4343 splt = htab->elf.iplt;
4344 srela = htab->elf.irelplt;
4345 }
4346
4347 if (splt == NULL || srela == NULL)
4348 abort ();
4349
4350 /* Fill in the entry in the .rela.plt section. */
4351 if (htab->is_vxworks)
4352 {
4353 /* Work out the index of this PLT entry. */
4354 rela_index = ((h->plt.offset - htab->plt_header_size)
4355 / htab->plt_entry_size);
4356
4357 /* Calculate the offset of the associated .got.plt entry.
4358 The first three entries are reserved. */
4359 got_offset = (rela_index + 3) * 4;
4360
4361 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4362 rela_index, got_offset);
4363
4364
4365 /* On VxWorks, the relocation points to the .got.plt entry,
4366 not the .plt entry. */
4367 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4368 + htab->elf.sgotplt->output_offset
4369 + got_offset);
4370 rela.r_addend = 0;
4371 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4372 R_SPARC_JMP_SLOT);
4373 }
4374 else
4375 {
4376 bfd_boolean ifunc = FALSE;
4377
4378 /* Fill in the entry in the procedure linkage table. */
4379 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4380 h->plt.offset, splt->size,
4381 &r_offset);
4382
4383 if (h == NULL
4384 || h->dynindx == -1
4385 || ((bfd_link_executable (info)
4386 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4387 && h->def_regular
4388 && h->type == STT_GNU_IFUNC))
4389 {
4390 ifunc = TRUE;
4391 BFD_ASSERT (h == NULL
4392 || (h->type == STT_GNU_IFUNC
4393 && h->def_regular
4394 && (h->root.type == bfd_link_hash_defined
4395 || h->root.type == bfd_link_hash_defweak)));
4396 }
4397
4398 rela.r_offset = r_offset
4399 + (splt->output_section->vma + splt->output_offset);
4400 if (ABI_64_P (output_bfd)
4401 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4402 {
4403 if (ifunc)
4404 {
4405 rela.r_addend = (h->root.u.def.section->output_section->vma
4406 + h->root.u.def.section->output_offset
4407 + h->root.u.def.value);
4408 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4409 R_SPARC_IRELATIVE);
4410 }
4411 else
4412 {
4413 rela.r_addend = (-(h->plt.offset + 4)
4414 - splt->output_section->vma
4415 - splt->output_offset);
4416 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4417 R_SPARC_JMP_SLOT);
4418 }
4419 }
4420 else
4421 {
4422 if (ifunc)
4423 {
4424 rela.r_addend = (h->root.u.def.section->output_section->vma
4425 + h->root.u.def.section->output_offset
4426 + h->root.u.def.value);
4427 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4428 R_SPARC_JMP_IREL);
4429 }
4430 else
4431 {
4432 rela.r_addend = 0;
4433 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4434 R_SPARC_JMP_SLOT);
4435 }
4436 }
4437 }
4438
4439 /* Adjust for the first 4 reserved elements in the .plt section
4440 when setting the offset in the .rela.plt section.
4441 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4442 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4443
4444 loc = srela->contents;
4445 loc += rela_index * bed->s->sizeof_rela;
4446 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4447
4448 if (!h->def_regular)
4449 {
4450 /* Mark the symbol as undefined, rather than as defined in
4451 the .plt section. Leave the value alone. */
4452 sym->st_shndx = SHN_UNDEF;
4453 /* If the symbol is weak, we do need to clear the value.
4454 Otherwise, the PLT entry would provide a definition for
4455 the symbol even if the symbol wasn't defined anywhere,
4456 and so the symbol would never be NULL. */
4457 if (!h->ref_regular_nonweak)
4458 sym->st_value = 0;
4459 }
4460 }
4461
4462 if (h->got.offset != (bfd_vma) -1
4463 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4464 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4465 {
4466 asection *sgot;
4467 asection *srela;
4468 Elf_Internal_Rela rela;
4469
4470 /* This symbol has an entry in the GOT. Set it up. */
4471
4472 sgot = htab->elf.sgot;
4473 srela = htab->elf.srelgot;
4474 BFD_ASSERT (sgot != NULL && srela != NULL);
4475
4476 rela.r_offset = (sgot->output_section->vma
4477 + sgot->output_offset
4478 + (h->got.offset &~ (bfd_vma) 1));
4479
4480 /* If this is a -Bsymbolic link, and the symbol is defined
4481 locally, we just want to emit a RELATIVE reloc. Likewise if
4482 the symbol was forced to be local because of a version file.
4483 The entry in the global offset table will already have been
4484 initialized in the relocate_section function. */
4485 if (! bfd_link_pic (info)
4486 && h->type == STT_GNU_IFUNC
4487 && h->def_regular)
4488 {
4489 asection *plt;
4490
4491 /* We load the GOT entry with the PLT entry. */
4492 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4493 SPARC_ELF_PUT_WORD (htab, output_bfd,
4494 (plt->output_section->vma
4495 + plt->output_offset + h->plt.offset),
4496 htab->elf.sgot->contents
4497 + (h->got.offset & ~(bfd_vma) 1));
4498 return TRUE;
4499 }
4500 else if (bfd_link_pic (info)
4501 && SYMBOL_REFERENCES_LOCAL (info, h))
4502 {
4503 asection *sec = h->root.u.def.section;
4504 if (h->type == STT_GNU_IFUNC)
4505 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4506 else
4507 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4508 rela.r_addend = (h->root.u.def.value
4509 + sec->output_section->vma
4510 + sec->output_offset);
4511 }
4512 else
4513 {
4514 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4515 rela.r_addend = 0;
4516 }
4517
4518 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4519 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4520 sparc_elf_append_rela (output_bfd, srela, &rela);
4521 }
4522
4523 if (h->needs_copy)
4524 {
4525 asection *s;
4526 Elf_Internal_Rela rela;
4527
4528 /* This symbols needs a copy reloc. Set it up. */
4529 BFD_ASSERT (h->dynindx != -1);
4530
4531 s = bfd_get_linker_section (h->root.u.def.section->owner,
4532 ".rela.bss");
4533 BFD_ASSERT (s != NULL);
4534
4535 rela.r_offset = (h->root.u.def.value
4536 + h->root.u.def.section->output_section->vma
4537 + h->root.u.def.section->output_offset);
4538 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4539 rela.r_addend = 0;
4540 sparc_elf_append_rela (output_bfd, s, &rela);
4541 }
4542
4543 /* Mark some specially defined symbols as absolute. On VxWorks,
4544 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4545 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4546 if (sym != NULL
4547 && (h == htab->elf.hdynamic
4548 || (!htab->is_vxworks
4549 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4550 sym->st_shndx = SHN_ABS;
4551
4552 return TRUE;
4553 }
4554
4555 /* Finish up the dynamic sections. */
4556
4557 static bfd_boolean
4558 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4559 bfd *dynobj, asection *sdyn,
4560 asection *splt ATTRIBUTE_UNUSED)
4561 {
4562 struct _bfd_sparc_elf_link_hash_table *htab;
4563 const struct elf_backend_data *bed;
4564 bfd_byte *dyncon, *dynconend;
4565 size_t dynsize;
4566 int stt_regidx = -1;
4567 bfd_boolean abi_64_p;
4568
4569 htab = _bfd_sparc_elf_hash_table (info);
4570 BFD_ASSERT (htab != NULL);
4571 bed = get_elf_backend_data (output_bfd);
4572 dynsize = bed->s->sizeof_dyn;
4573 dynconend = sdyn->contents + sdyn->size;
4574 abi_64_p = ABI_64_P (output_bfd);
4575 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4576 {
4577 Elf_Internal_Dyn dyn;
4578 const char *name;
4579 bfd_boolean size;
4580
4581 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4582
4583 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4584 {
4585 /* On VxWorks, DT_RELASZ should not include the relocations
4586 in .rela.plt. */
4587 if (htab->elf.srelplt)
4588 {
4589 dyn.d_un.d_val -= htab->elf.srelplt->size;
4590 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4591 }
4592 }
4593 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4594 {
4595 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4596 not to the start of the PLT. */
4597 if (htab->elf.sgotplt)
4598 {
4599 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4600 + htab->elf.sgotplt->output_offset);
4601 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4602 }
4603 }
4604 else if (htab->is_vxworks
4605 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4606 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4607 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4608 {
4609 if (stt_regidx == -1)
4610 {
4611 stt_regidx =
4612 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4613 if (stt_regidx == -1)
4614 return FALSE;
4615 }
4616 dyn.d_un.d_val = stt_regidx++;
4617 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4618 }
4619 else
4620 {
4621 switch (dyn.d_tag)
4622 {
4623 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4624 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4625 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4626 default: name = NULL; size = FALSE; break;
4627 }
4628
4629 if (name != NULL)
4630 {
4631 asection *s;
4632
4633 s = bfd_get_section_by_name (output_bfd, name);
4634 if (s == NULL)
4635 dyn.d_un.d_val = 0;
4636 else
4637 {
4638 if (! size)
4639 dyn.d_un.d_ptr = s->vma;
4640 else
4641 dyn.d_un.d_val = s->size;
4642 }
4643 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4644 }
4645 }
4646 }
4647 return TRUE;
4648 }
4649
4650 /* Install the first PLT entry in a VxWorks executable and make sure that
4651 .rela.plt.unloaded relocations have the correct symbol indexes. */
4652
4653 static void
4654 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4655 {
4656 struct _bfd_sparc_elf_link_hash_table *htab;
4657 Elf_Internal_Rela rela;
4658 bfd_vma got_base;
4659 bfd_byte *loc;
4660
4661 htab = _bfd_sparc_elf_hash_table (info);
4662 BFD_ASSERT (htab != NULL);
4663
4664 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4665 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4666 + htab->elf.hgot->root.u.def.section->output_offset
4667 + htab->elf.hgot->root.u.def.value);
4668
4669 /* Install the initial PLT entry. */
4670 bfd_put_32 (output_bfd,
4671 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4672 htab->elf.splt->contents);
4673 bfd_put_32 (output_bfd,
4674 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4675 htab->elf.splt->contents + 4);
4676 bfd_put_32 (output_bfd,
4677 sparc_vxworks_exec_plt0_entry[2],
4678 htab->elf.splt->contents + 8);
4679 bfd_put_32 (output_bfd,
4680 sparc_vxworks_exec_plt0_entry[3],
4681 htab->elf.splt->contents + 12);
4682 bfd_put_32 (output_bfd,
4683 sparc_vxworks_exec_plt0_entry[4],
4684 htab->elf.splt->contents + 16);
4685
4686 loc = htab->srelplt2->contents;
4687
4688 /* Add an unloaded relocation for the initial entry's "sethi". */
4689 rela.r_offset = (htab->elf.splt->output_section->vma
4690 + htab->elf.splt->output_offset);
4691 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4692 rela.r_addend = 8;
4693 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4694 loc += sizeof (Elf32_External_Rela);
4695
4696 /* Likewise the following "or". */
4697 rela.r_offset += 4;
4698 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4699 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4700 loc += sizeof (Elf32_External_Rela);
4701
4702 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4703 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4704 in which symbols were output. */
4705 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4706 {
4707 Elf_Internal_Rela rel;
4708
4709 /* The entry's initial "sethi" (against _G_O_T_). */
4710 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4711 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4712 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4713 loc += sizeof (Elf32_External_Rela);
4714
4715 /* The following "or" (also against _G_O_T_). */
4716 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4717 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4718 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4719 loc += sizeof (Elf32_External_Rela);
4720
4721 /* The .got.plt entry (against _P_L_T_). */
4722 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4723 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4724 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4725 loc += sizeof (Elf32_External_Rela);
4726 }
4727 }
4728
4729 /* Install the first PLT entry in a VxWorks shared object. */
4730
4731 static void
4732 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4733 {
4734 struct _bfd_sparc_elf_link_hash_table *htab;
4735 unsigned int i;
4736
4737 htab = _bfd_sparc_elf_hash_table (info);
4738 BFD_ASSERT (htab != NULL);
4739
4740 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4741 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4742 htab->elf.splt->contents + i * 4);
4743 }
4744
4745 /* Finish up local dynamic symbol handling. We set the contents of
4746 various dynamic sections here. */
4747
4748 static bfd_boolean
4749 finish_local_dynamic_symbol (void **slot, void *inf)
4750 {
4751 struct elf_link_hash_entry *h
4752 = (struct elf_link_hash_entry *) *slot;
4753 struct bfd_link_info *info
4754 = (struct bfd_link_info *) inf;
4755
4756 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4757 h, NULL);
4758 }
4759
4760 bfd_boolean
4761 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4762 {
4763 bfd *dynobj;
4764 asection *sdyn;
4765 struct _bfd_sparc_elf_link_hash_table *htab;
4766
4767 htab = _bfd_sparc_elf_hash_table (info);
4768 BFD_ASSERT (htab != NULL);
4769 dynobj = htab->elf.dynobj;
4770
4771 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4772
4773 if (elf_hash_table (info)->dynamic_sections_created)
4774 {
4775 asection *splt;
4776
4777 splt = htab->elf.splt;
4778 BFD_ASSERT (splt != NULL && sdyn != NULL);
4779
4780 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4781 return FALSE;
4782
4783 /* Initialize the contents of the .plt section. */
4784 if (splt->size > 0)
4785 {
4786 if (htab->is_vxworks)
4787 {
4788 if (bfd_link_pic (info))
4789 sparc_vxworks_finish_shared_plt (output_bfd, info);
4790 else
4791 sparc_vxworks_finish_exec_plt (output_bfd, info);
4792 }
4793 else
4794 {
4795 memset (splt->contents, 0, htab->plt_header_size);
4796 if (!ABI_64_P (output_bfd))
4797 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4798 splt->contents + splt->size - 4);
4799 }
4800 }
4801
4802 if (elf_section_data (splt->output_section) != NULL)
4803 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4804 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4805 ? 0 : htab->plt_entry_size);
4806 }
4807
4808 /* Set the first entry in the global offset table to the address of
4809 the dynamic section. */
4810 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4811 {
4812 bfd_vma val = (sdyn ?
4813 sdyn->output_section->vma + sdyn->output_offset :
4814 0);
4815
4816 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4817 }
4818
4819 if (htab->elf.sgot)
4820 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4821 SPARC_ELF_WORD_BYTES (htab);
4822
4823 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4824 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4825
4826 return TRUE;
4827 }
4828
4829 \f
4830 /* Set the right machine number for a SPARC ELF file. */
4831
4832 bfd_boolean
4833 _bfd_sparc_elf_object_p (bfd *abfd)
4834 {
4835 if (ABI_64_P (abfd))
4836 {
4837 unsigned long mach = bfd_mach_sparc_v9;
4838
4839 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4840 mach = bfd_mach_sparc_v9b;
4841 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4842 mach = bfd_mach_sparc_v9a;
4843 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4844 }
4845 else
4846 {
4847 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4848 {
4849 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4850 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4851 bfd_mach_sparc_v8plusb);
4852 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4853 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4854 bfd_mach_sparc_v8plusa);
4855 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4856 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4857 bfd_mach_sparc_v8plus);
4858 else
4859 return FALSE;
4860 }
4861 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4862 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4863 bfd_mach_sparc_sparclite_le);
4864 else
4865 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4866 }
4867 }
4868
4869 /* Return address for Ith PLT stub in section PLT, for relocation REL
4870 or (bfd_vma) -1 if it should not be included. */
4871
4872 bfd_vma
4873 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4874 {
4875 if (ABI_64_P (plt->owner))
4876 {
4877 bfd_vma j;
4878
4879 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4880 if (i < PLT64_LARGE_THRESHOLD)
4881 return plt->vma + i * PLT64_ENTRY_SIZE;
4882
4883 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4884 i -= j;
4885 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4886 }
4887 else
4888 return rel->address;
4889 }
4890
4891 /* Merge backend specific data from an object file to the output
4892 object file when linking. */
4893
4894 bfd_boolean
4895 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4896 {
4897 obj_attribute *in_attr, *in_attrs;
4898 obj_attribute *out_attr, *out_attrs;
4899
4900 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4901 {
4902 /* This is the first object. Copy the attributes. */
4903 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4904
4905 /* Use the Tag_null value to indicate the attributes have been
4906 initialized. */
4907 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4908
4909 return TRUE;
4910 }
4911
4912 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4913 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4914
4915 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4916 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4917
4918 out_attr->i |= in_attr->i;
4919 out_attr->type = 1;
4920
4921 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4922 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4923
4924 out_attr->i |= in_attr->i;
4925 out_attr->type = 1;
4926
4927
4928 /* Merge Tag_compatibility attributes and any common GNU ones. */
4929 _bfd_elf_merge_object_attributes (ibfd, obfd);
4930
4931 return TRUE;
4932 }
The GNU Binutils are a collection of binary tools.