1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2021 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
init_insn_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,bfd_vma * prelocation,bfd_vma * pinsn)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
sparc_elf_notsup_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry ATTRIBUTE_UNUSED,asymbol * symbol ATTRIBUTE_UNUSED,void * data ATTRIBUTE_UNUSED,asection * input_section ATTRIBUTE_UNUSED,bfd * output_bfd ATTRIBUTE_UNUSED,char ** error_message ATTRIBUTE_UNUSED)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
sparc_elf_wdisp16_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)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
sparc_elf_wdisp10_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)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
sparc_elf_hix22_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)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
sparc_elf_lox10_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)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 *
_bfd_sparc_elf_reloc_type_lookup(bfd * abfd,bfd_reloc_code_real_type code)314 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd,
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 /* xgettext:c-format */
589 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
590 bfd_set_error (bfd_error_bad_value);
591 return NULL;
592 }
593
594 reloc_howto_type *
_bfd_sparc_elf_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)595 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
596 const char *r_name)
597 {
598 unsigned int i;
599
600 for (i = 0; i < ARRAY_SIZE (_bfd_sparc_elf_howto_table); i++)
601 if (_bfd_sparc_elf_howto_table[i].name != NULL
602 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
603 return &_bfd_sparc_elf_howto_table[i];
604
605 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
606 return &sparc_vtinherit_howto;
607 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
608 return &sparc_vtentry_howto;
609 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
610 return &sparc_rev32_howto;
611
612 return NULL;
613 }
614
615 reloc_howto_type *
_bfd_sparc_elf_info_to_howto_ptr(bfd * abfd ATTRIBUTE_UNUSED,unsigned int r_type)616 _bfd_sparc_elf_info_to_howto_ptr (bfd *abfd ATTRIBUTE_UNUSED,
617 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 (_("%pB: unsupported relocation type %#x"),
640 abfd, r_type);
641 bfd_set_error (bfd_error_bad_value);
642 return NULL;
643 }
644 return &_bfd_sparc_elf_howto_table[r_type];
645 }
646 }
647
648 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
649 so just take advantage of that. */
650 #define SPARC_ELF_R_TYPE(r_info) \
651 ((r_info) & 0xff)
652
653 bool
_bfd_sparc_elf_info_to_howto(bfd * abfd,arelent * cache_ptr,Elf_Internal_Rela * dst)654 _bfd_sparc_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
655 Elf_Internal_Rela *dst)
656 {
657 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
658
659 if ((cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (abfd, r_type)) == NULL)
660 {
661 bfd_set_error (bfd_error_bad_value);
662 return false;
663 }
664 return true;
665 }
666
667
668 /* The nop opcode we use. */
669 #define SPARC_NOP 0x01000000
670
671 #define SPARC_INSN_BYTES 4
672
673 /* Is an undefined weak symbol resolved to 0 ?
674 Reference to an undefined weak symbol is resolved to 0 when
675 building an executable if it isn't dynamic and
676 1. Has non-GOT/non-PLT relocations in text section.
677 Or
678 2. Has no GOT/PLT relocation. */
679 #define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
680 ((EH)->elf.root.type == bfd_link_hash_undefweak \
681 && bfd_link_executable (INFO) \
682 && (_bfd_sparc_elf_hash_table (INFO)->interp == NULL \
683 || !(INFO)->dynamic_undefined_weak \
684 || (EH)->has_non_got_reloc \
685 || !(EH)->has_got_reloc))
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 #define GOT_UNKNOWN 0
694 #define GOT_NORMAL 1
695 #define GOT_TLS_GD 2
696 #define GOT_TLS_IE 3
697 unsigned char tls_type;
698
699 /* Symbol has GOT or PLT relocations. */
700 unsigned int has_got_reloc : 1;
701
702 /* Symbol has old-style, non-relaxable GOT relocations. */
703 unsigned int has_old_style_got_reloc : 1;
704
705 /* Symbol has non-GOT/non-PLT relocations in text sections. */
706 unsigned int has_non_got_reloc : 1;
707
708 };
709
710 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
711
712 struct _bfd_sparc_elf_obj_tdata
713 {
714 struct elf_obj_tdata root;
715
716 /* tls_type for each local got entry. */
717 char *local_got_tls_type;
718
719 /* TRUE if TLS GD relocs has been seen for this object. */
720 bool has_tlsgd;
721 };
722
723 #define _bfd_sparc_elf_tdata(abfd) \
724 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
725
726 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
727 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
728
729 #define is_sparc_elf(bfd) \
730 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
731 && elf_tdata (bfd) != NULL \
732 && elf_object_id (bfd) == SPARC_ELF_DATA)
733
734 bool
_bfd_sparc_elf_mkobject(bfd * abfd)735 _bfd_sparc_elf_mkobject (bfd *abfd)
736 {
737 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
738 SPARC_ELF_DATA);
739 }
740
741 static void
sparc_put_word_32(bfd * abfd,bfd_vma val,void * ptr)742 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
743 {
744 bfd_put_32 (abfd, val, ptr);
745 }
746
747 static void
sparc_put_word_64(bfd * abfd,bfd_vma val,void * ptr)748 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
749 {
750 bfd_put_64 (abfd, val, ptr);
751 }
752
753 static void
sparc_elf_append_rela(bfd * abfd,asection * s,Elf_Internal_Rela * rel)754 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
755 {
756 const struct elf_backend_data *bed;
757 bfd_byte *loc;
758
759 bed = get_elf_backend_data (abfd);
760 BFD_ASSERT (s->reloc_count * bed->s->sizeof_rela < s->size);
761 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
762 bed->s->swap_reloca_out (abfd, rel, loc);
763 }
764
765 static bfd_vma
sparc_elf_r_info_64(Elf_Internal_Rela * in_rel ATTRIBUTE_UNUSED,bfd_vma rel_index ATTRIBUTE_UNUSED,bfd_vma type ATTRIBUTE_UNUSED)766 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
767 bfd_vma rel_index ATTRIBUTE_UNUSED,
768 bfd_vma type ATTRIBUTE_UNUSED)
769 {
770 return ELF64_R_INFO (rel_index,
771 (in_rel ?
772 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
773 type) : type));
774 }
775
776 static bfd_vma
sparc_elf_r_info_32(Elf_Internal_Rela * in_rel ATTRIBUTE_UNUSED,bfd_vma rel_index,bfd_vma type)777 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
778 bfd_vma rel_index, bfd_vma type)
779 {
780 return ELF32_R_INFO (rel_index, type);
781 }
782
783 static bfd_vma
sparc_elf_r_symndx_64(bfd_vma r_info)784 sparc_elf_r_symndx_64 (bfd_vma r_info)
785 {
786 bfd_vma r_symndx = ELF32_R_SYM (r_info);
787 return (r_symndx >> 24);
788 }
789
790 static bfd_vma
sparc_elf_r_symndx_32(bfd_vma r_info)791 sparc_elf_r_symndx_32 (bfd_vma r_info)
792 {
793 return ELF32_R_SYM (r_info);
794 }
795
796 /* PLT/GOT stuff */
797
798 #define PLT32_ENTRY_SIZE 12
799 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
800
801 /* The first four entries in a 32-bit procedure linkage table are reserved,
802 and the initial contents are unimportant (we zero them out).
803 Subsequent entries look like this. See the SVR4 ABI SPARC
804 supplement to see how this works. */
805
806 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
807 #define PLT32_ENTRY_WORD0 0x03000000
808 /* b,a .plt0. We fill in the offset later. */
809 #define PLT32_ENTRY_WORD1 0x30800000
810 /* nop. */
811 #define PLT32_ENTRY_WORD2 SPARC_NOP
812
813 static int
sparc32_plt_entry_build(bfd * output_bfd,asection * splt,bfd_vma offset,bfd_vma max ATTRIBUTE_UNUSED,bfd_vma * r_offset)814 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
815 bfd_vma max ATTRIBUTE_UNUSED,
816 bfd_vma *r_offset)
817 {
818 bfd_put_32 (output_bfd,
819 PLT32_ENTRY_WORD0 + offset,
820 splt->contents + offset);
821 bfd_put_32 (output_bfd,
822 (PLT32_ENTRY_WORD1
823 + (((- (offset + 4)) >> 2) & 0x3fffff)),
824 splt->contents + offset + 4);
825 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
826 splt->contents + offset + 8);
827
828 *r_offset = offset;
829
830 return offset / PLT32_ENTRY_SIZE - 4;
831 }
832
833 /* Both the headers and the entries are icache aligned. */
834 #define PLT64_ENTRY_SIZE 32
835 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
836 #define PLT64_LARGE_THRESHOLD 32768
837
838 static int
sparc64_plt_entry_build(bfd * output_bfd,asection * splt,bfd_vma offset,bfd_vma max,bfd_vma * r_offset)839 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
840 bfd_vma max, bfd_vma *r_offset)
841 {
842 unsigned char *entry = splt->contents + offset;
843 const unsigned int nop = SPARC_NOP;
844 int plt_index;
845
846 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
847 {
848 unsigned int sethi, ba;
849
850 *r_offset = offset;
851
852 plt_index = (offset / PLT64_ENTRY_SIZE);
853
854 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
855 ba = 0x30680000
856 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
857
858 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
859 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
860 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
861 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
862 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
863 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
864 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
865 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
866 }
867 else
868 {
869 unsigned char *ptr;
870 unsigned int ldx;
871 int block, last_block, ofs, last_ofs, chunks_this_block;
872 const int insn_chunk_size = (6 * 4);
873 const int ptr_chunk_size = (1 * 8);
874 const int entries_per_block = 160;
875 const int block_size = entries_per_block * (insn_chunk_size
876 + ptr_chunk_size);
877
878 /* Entries 32768 and higher are grouped into blocks of 160.
879 The blocks are further subdivided into 160 sequences of
880 6 instructions and 160 pointers. If a block does not require
881 the full 160 entries, let's say it requires N, then there
882 will be N sequences of 6 instructions and N pointers. */
883
884 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
885 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
886
887 block = offset / block_size;
888 last_block = max / block_size;
889 if (block != last_block)
890 {
891 chunks_this_block = 160;
892 }
893 else
894 {
895 last_ofs = max % block_size;
896 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
897 }
898
899 ofs = offset % block_size;
900
901 plt_index = (PLT64_LARGE_THRESHOLD +
902 (block * 160) +
903 (ofs / insn_chunk_size));
904
905 ptr = splt->contents
906 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
907 + (block * block_size)
908 + (chunks_this_block * insn_chunk_size)
909 + (ofs / insn_chunk_size) * ptr_chunk_size;
910
911 *r_offset = (bfd_vma) (ptr - splt->contents);
912
913 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
914
915 /* mov %o7,%g5
916 call .+8
917 nop
918 ldx [%o7+P],%g1
919 jmpl %o7+%g1,%g1
920 mov %g5,%o7 */
921 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
922 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
923 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
924 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
925 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
926 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
927
928 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
929 }
930
931 return plt_index - 4;
932 }
933
934 /* The format of the first PLT entry in a VxWorks executable. */
935 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
936 {
937 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
938 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
939 0xc4008000, /* ld [ %g2 ], %g2 */
940 0x81c08000, /* jmp %g2 */
941 0x01000000 /* nop */
942 };
943
944 /* The format of subsequent PLT entries. */
945 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
946 {
947 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
948 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
949 0xc2004000, /* ld [ %g1 ], %g1 */
950 0x81c04000, /* jmp %g1 */
951 0x01000000, /* nop */
952 0x03000000, /* sethi %hi(f@pltindex), %g1 */
953 0x10800000, /* b _PLT_resolve */
954 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
955 };
956
957 /* The format of the first PLT entry in a VxWorks shared object. */
958 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
959 {
960 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
961 0x81c08000, /* jmp %g2 */
962 0x01000000 /* nop */
963 };
964
965 /* The format of subsequent PLT entries. */
966 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
967 {
968 0x03000000, /* sethi %hi(f@got), %g1 */
969 0x82106000, /* or %g1, %lo(f@got), %g1 */
970 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
971 0x81c04000, /* jmp %g1 */
972 0x01000000, /* nop */
973 0x03000000, /* sethi %hi(f@pltindex), %g1 */
974 0x10800000, /* b _PLT_resolve */
975 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
976 };
977
978 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
979 htab->put_word(bfd, val, ptr)
980
981 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
982 htab->r_info(in_rel, index, type)
983
984 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
985 htab->r_symndx(r_info)
986
987 #define SPARC_ELF_WORD_BYTES(htab) \
988 htab->bytes_per_word
989
990 #define SPARC_ELF_RELA_BYTES(htab) \
991 htab->bytes_per_rela
992
993 #define SPARC_ELF_DTPOFF_RELOC(htab) \
994 htab->dtpoff_reloc
995
996 #define SPARC_ELF_DTPMOD_RELOC(htab) \
997 htab->dtpmod_reloc
998
999 #define SPARC_ELF_TPOFF_RELOC(htab) \
1000 htab->tpoff_reloc
1001
1002 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
1003 htab->build_plt_entry (obfd, splt, off, max, r_off)
1004
1005 /* Create an entry in an SPARC ELF linker hash table. */
1006
1007 static struct bfd_hash_entry *
link_hash_newfunc(struct bfd_hash_entry * entry,struct bfd_hash_table * table,const char * string)1008 link_hash_newfunc (struct bfd_hash_entry *entry,
1009 struct bfd_hash_table *table, const char *string)
1010 {
1011 /* Allocate the structure if it has not already been allocated by a
1012 subclass. */
1013 if (entry == NULL)
1014 {
1015 entry = bfd_hash_allocate (table,
1016 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1017 if (entry == NULL)
1018 return entry;
1019 }
1020
1021 /* Call the allocation method of the superclass. */
1022 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1023 if (entry != NULL)
1024 {
1025 struct _bfd_sparc_elf_link_hash_entry *eh;
1026
1027 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1028 eh->tls_type = GOT_UNKNOWN;
1029 eh->has_got_reloc = 0;
1030 eh->has_non_got_reloc = 0;
1031 }
1032
1033 return entry;
1034 }
1035
1036 /* The name of the dynamic interpreter. This is put in the .interp
1037 section. */
1038
1039 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1040 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1041
1042 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1043 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1044 as global symbol. We reuse indx and dynstr_index for local symbol
1045 hash since they aren't used by global symbols in this backend. */
1046
1047 static hashval_t
elf_sparc_local_htab_hash(const void * ptr)1048 elf_sparc_local_htab_hash (const void *ptr)
1049 {
1050 struct elf_link_hash_entry *h
1051 = (struct elf_link_hash_entry *) ptr;
1052 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1053 }
1054
1055 /* Compare local hash entries. */
1056
1057 static int
elf_sparc_local_htab_eq(const void * ptr1,const void * ptr2)1058 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1059 {
1060 struct elf_link_hash_entry *h1
1061 = (struct elf_link_hash_entry *) ptr1;
1062 struct elf_link_hash_entry *h2
1063 = (struct elf_link_hash_entry *) ptr2;
1064
1065 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1066 }
1067
1068 /* Find and/or create a hash entry for local symbol. */
1069
1070 static struct elf_link_hash_entry *
elf_sparc_get_local_sym_hash(struct _bfd_sparc_elf_link_hash_table * htab,bfd * abfd,const Elf_Internal_Rela * rel,bool create)1071 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1072 bfd *abfd, const Elf_Internal_Rela *rel,
1073 bool create)
1074 {
1075 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1076 asection *sec = abfd->sections;
1077 unsigned long r_symndx;
1078 hashval_t h;
1079 void **slot;
1080
1081 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1082 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1083
1084 e.elf.indx = sec->id;
1085 e.elf.dynstr_index = r_symndx;
1086 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1087 create ? INSERT : NO_INSERT);
1088
1089 if (!slot)
1090 return NULL;
1091
1092 if (*slot)
1093 {
1094 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1095 return &ret->elf;
1096 }
1097
1098 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1099 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1100 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1101 if (ret)
1102 {
1103 memset (ret, 0, sizeof (*ret));
1104 ret->elf.indx = sec->id;
1105 ret->elf.dynstr_index = r_symndx;
1106 ret->elf.dynindx = -1;
1107 ret->elf.plt.offset = (bfd_vma) -1;
1108 ret->elf.got.offset = (bfd_vma) -1;
1109 *slot = ret;
1110 }
1111 return &ret->elf;
1112 }
1113
1114 /* Destroy a SPARC ELF linker hash table. */
1115
1116 static void
_bfd_sparc_elf_link_hash_table_free(bfd * obfd)1117 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1118 {
1119 struct _bfd_sparc_elf_link_hash_table *htab
1120 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1121
1122 if (htab->loc_hash_table)
1123 htab_delete (htab->loc_hash_table);
1124 if (htab->loc_hash_memory)
1125 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1126 _bfd_elf_link_hash_table_free (obfd);
1127 }
1128
1129 /* Create a SPARC ELF linker hash table. */
1130
1131 struct bfd_link_hash_table *
_bfd_sparc_elf_link_hash_table_create(bfd * abfd)1132 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1133 {
1134 struct _bfd_sparc_elf_link_hash_table *ret;
1135 size_t amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1136
1137 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1138 if (ret == NULL)
1139 return NULL;
1140
1141 if (ABI_64_P (abfd))
1142 {
1143 ret->put_word = sparc_put_word_64;
1144 ret->r_info = sparc_elf_r_info_64;
1145 ret->r_symndx = sparc_elf_r_symndx_64;
1146 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1147 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1148 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1149 ret->word_align_power = 3;
1150 ret->align_power_max = 4;
1151 ret->bytes_per_word = 8;
1152 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1153 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1154 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1155
1156 ret->build_plt_entry = sparc64_plt_entry_build;
1157 ret->plt_header_size = PLT64_HEADER_SIZE;
1158 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1159 }
1160 else
1161 {
1162 ret->put_word = sparc_put_word_32;
1163 ret->r_info = sparc_elf_r_info_32;
1164 ret->r_symndx = sparc_elf_r_symndx_32;
1165 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1166 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1167 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1168 ret->word_align_power = 2;
1169 ret->align_power_max = 3;
1170 ret->bytes_per_word = 4;
1171 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1172 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1173 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1174
1175 ret->build_plt_entry = sparc32_plt_entry_build;
1176 ret->plt_header_size = PLT32_HEADER_SIZE;
1177 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1178 }
1179
1180 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1181 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1182 SPARC_ELF_DATA))
1183 {
1184 free (ret);
1185 return NULL;
1186 }
1187
1188 ret->loc_hash_table = htab_try_create (1024,
1189 elf_sparc_local_htab_hash,
1190 elf_sparc_local_htab_eq,
1191 NULL);
1192 ret->loc_hash_memory = objalloc_create ();
1193 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1194 {
1195 _bfd_sparc_elf_link_hash_table_free (abfd);
1196 return NULL;
1197 }
1198 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1199
1200 return &ret->elf.root;
1201 }
1202
1203 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1204 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1205 hash table. */
1206
1207 bool
_bfd_sparc_elf_create_dynamic_sections(bfd * dynobj,struct bfd_link_info * info)1208 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1209 struct bfd_link_info *info)
1210 {
1211 struct _bfd_sparc_elf_link_hash_table *htab;
1212
1213 htab = _bfd_sparc_elf_hash_table (info);
1214 BFD_ASSERT (htab != NULL);
1215
1216 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1217 return false;
1218
1219 if (htab->elf.target_os == is_vxworks)
1220 {
1221 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1222 return false;
1223 if (bfd_link_pic (info))
1224 {
1225 htab->plt_header_size
1226 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1227 htab->plt_entry_size
1228 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1229 }
1230 else
1231 {
1232 htab->plt_header_size
1233 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1234 htab->plt_entry_size
1235 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1236 }
1237 }
1238
1239 if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss
1240 || (!bfd_link_pic (info) && !htab->elf.srelbss))
1241 abort ();
1242
1243 return true;
1244 }
1245
1246 static bool
create_ifunc_sections(bfd * abfd,struct bfd_link_info * info)1247 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1248 {
1249 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1250 struct elf_link_hash_table *htab = elf_hash_table (info);
1251 flagword flags, pltflags;
1252 asection *s;
1253
1254 if (htab->irelifunc != NULL || htab->iplt != NULL)
1255 return true;
1256
1257 flags = bed->dynamic_sec_flags;
1258 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1259
1260 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1261 if (s == NULL
1262 || !bfd_set_section_alignment (s, bed->plt_alignment))
1263 return false;
1264 htab->iplt = s;
1265
1266 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1267 flags | SEC_READONLY);
1268 if (s == NULL
1269 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1270 return false;
1271 htab->irelplt = s;
1272
1273 return true;
1274 }
1275
1276 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1277
1278 void
_bfd_sparc_elf_copy_indirect_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * dir,struct elf_link_hash_entry * ind)1279 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1280 struct elf_link_hash_entry *dir,
1281 struct elf_link_hash_entry *ind)
1282 {
1283 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1284
1285 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1286 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1287
1288 if (ind->root.type == bfd_link_hash_indirect && dir->got.refcount <= 0)
1289 {
1290 edir->tls_type = eind->tls_type;
1291 eind->tls_type = GOT_UNKNOWN;
1292 }
1293
1294 /* Copy has_got_reloc and has_non_got_reloc. */
1295 edir->has_got_reloc |= eind->has_got_reloc;
1296 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1297
1298 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1299 }
1300
1301 static int
sparc_elf_tls_transition(struct bfd_link_info * info,bfd * abfd,int r_type,int is_local)1302 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1303 int r_type, int is_local)
1304 {
1305 if (! ABI_64_P (abfd)
1306 && r_type == R_SPARC_TLS_GD_HI22
1307 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1308 return R_SPARC_REV32;
1309
1310 if (!bfd_link_executable (info))
1311 return r_type;
1312
1313 switch (r_type)
1314 {
1315 case R_SPARC_TLS_GD_HI22:
1316 return is_local ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_IE_HI22;
1317 case R_SPARC_TLS_GD_LO10:
1318 return is_local ? R_SPARC_TLS_LE_LOX10 : R_SPARC_TLS_IE_LO10;
1319 case R_SPARC_TLS_LDM_HI22:
1320 return R_SPARC_TLS_LE_HIX22;
1321 case R_SPARC_TLS_LDM_LO10:
1322 return R_SPARC_TLS_LE_LOX10;
1323 case R_SPARC_TLS_IE_HI22:
1324 return is_local ? R_SPARC_TLS_LE_HIX22 : r_type;
1325 case R_SPARC_TLS_IE_LO10:
1326 return is_local ? R_SPARC_TLS_LE_LOX10 : r_type;
1327 }
1328
1329 return r_type;
1330 }
1331
1332 /* Look through the relocs for a section during the first phase, and
1333 allocate space in the global offset table or procedure linkage
1334 table. */
1335
1336 bool
_bfd_sparc_elf_check_relocs(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)1337 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1338 asection *sec, const Elf_Internal_Rela *relocs)
1339 {
1340 struct _bfd_sparc_elf_link_hash_table *htab;
1341 Elf_Internal_Shdr *symtab_hdr;
1342 struct elf_link_hash_entry **sym_hashes;
1343 const Elf_Internal_Rela *rel;
1344 const Elf_Internal_Rela *rel_end;
1345 asection *sreloc;
1346 int num_relocs;
1347 bool checked_tlsgd = false;
1348
1349 if (bfd_link_relocatable (info))
1350 return true;
1351
1352 htab = _bfd_sparc_elf_hash_table (info);
1353 BFD_ASSERT (htab != NULL);
1354 symtab_hdr = &elf_symtab_hdr (abfd);
1355 sym_hashes = elf_sym_hashes (abfd);
1356
1357 sreloc = NULL;
1358
1359 if (ABI_64_P (abfd))
1360 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1361 else
1362 num_relocs = sec->reloc_count;
1363
1364 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1365
1366 if (htab->elf.dynobj == NULL)
1367 htab->elf.dynobj = abfd;
1368 if (!create_ifunc_sections (htab->elf.dynobj, info))
1369 return false;
1370
1371 rel_end = relocs + num_relocs;
1372 for (rel = relocs; rel < rel_end; rel++)
1373 {
1374 unsigned int r_type;
1375 unsigned int r_symndx;
1376 struct elf_link_hash_entry *h;
1377 struct _bfd_sparc_elf_link_hash_entry *eh;
1378 Elf_Internal_Sym *isym;
1379
1380 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1381 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1382
1383 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1384 {
1385 /* xgettext:c-format */
1386 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
1387 return false;
1388 }
1389
1390 isym = NULL;
1391 if (r_symndx < symtab_hdr->sh_info)
1392 {
1393 /* A local symbol. */
1394 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, abfd,
1395 r_symndx);
1396 if (isym == NULL)
1397 return false;
1398
1399 /* Check relocation against local STT_GNU_IFUNC symbol. */
1400 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1401 {
1402 h = elf_sparc_get_local_sym_hash (htab, abfd, rel, true);
1403 if (h == NULL)
1404 return false;
1405
1406 /* Fake a STT_GNU_IFUNC symbol. */
1407 h->type = STT_GNU_IFUNC;
1408 h->def_regular = 1;
1409 h->ref_regular = 1;
1410 h->forced_local = 1;
1411 h->root.type = bfd_link_hash_defined;
1412 }
1413 else
1414 h = NULL;
1415 }
1416 else
1417 {
1418 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1419 while (h->root.type == bfd_link_hash_indirect
1420 || h->root.type == bfd_link_hash_warning)
1421 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1422 }
1423
1424 if (h && h->type == STT_GNU_IFUNC && h->def_regular)
1425 {
1426 h->ref_regular = 1;
1427 h->plt.refcount += 1;
1428 }
1429
1430 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1431 with R_SPARC_TLS_GD_HI22. */
1432 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1433 switch (r_type)
1434 {
1435 case R_SPARC_TLS_GD_HI22:
1436 {
1437 const Elf_Internal_Rela *relt;
1438
1439 for (relt = rel + 1; relt < rel_end; relt++)
1440 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1441 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1442 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1443 break;
1444 checked_tlsgd = true;
1445 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1446 }
1447 break;
1448 case R_SPARC_TLS_GD_LO10:
1449 case R_SPARC_TLS_GD_ADD:
1450 case R_SPARC_TLS_GD_CALL:
1451 checked_tlsgd = true;
1452 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = true;
1453 break;
1454 }
1455
1456 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1457 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1458
1459 switch (r_type)
1460 {
1461 case R_SPARC_TLS_LDM_HI22:
1462 case R_SPARC_TLS_LDM_LO10:
1463 htab->tls_ldm_got.refcount += 1;
1464 if (eh != NULL)
1465 eh->has_got_reloc = 1;
1466 break;
1467
1468 case R_SPARC_TLS_LE_HIX22:
1469 case R_SPARC_TLS_LE_LOX10:
1470 if (!bfd_link_executable (info))
1471 goto r_sparc_plt32;
1472 break;
1473
1474 case R_SPARC_TLS_IE_HI22:
1475 case R_SPARC_TLS_IE_LO10:
1476 if (!bfd_link_executable (info))
1477 info->flags |= DF_STATIC_TLS;
1478 /* Fall through */
1479
1480 case R_SPARC_GOT10:
1481 case R_SPARC_GOT13:
1482 case R_SPARC_GOT22:
1483 case R_SPARC_GOTDATA_HIX22:
1484 case R_SPARC_GOTDATA_LOX10:
1485 case R_SPARC_GOTDATA_OP_HIX22:
1486 case R_SPARC_GOTDATA_OP_LOX10:
1487 case R_SPARC_TLS_GD_HI22:
1488 case R_SPARC_TLS_GD_LO10:
1489 /* This symbol requires a global offset table entry. */
1490 {
1491 int tls_type, old_tls_type;
1492
1493 switch (r_type)
1494 {
1495 case R_SPARC_TLS_GD_HI22:
1496 case R_SPARC_TLS_GD_LO10:
1497 tls_type = GOT_TLS_GD;
1498 break;
1499 case R_SPARC_TLS_IE_HI22:
1500 case R_SPARC_TLS_IE_LO10:
1501 tls_type = GOT_TLS_IE;
1502 break;
1503 default:
1504 tls_type = GOT_NORMAL;
1505 break;
1506 }
1507
1508 if (h != NULL)
1509 {
1510 h->got.refcount += 1;
1511 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1512 }
1513 else
1514 {
1515 bfd_signed_vma *local_got_refcounts;
1516
1517 /* This is a global offset table entry for a local symbol. */
1518 local_got_refcounts = elf_local_got_refcounts (abfd);
1519 if (local_got_refcounts == NULL)
1520 {
1521 bfd_size_type size;
1522
1523 size = symtab_hdr->sh_info;
1524 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1525 local_got_refcounts = ((bfd_signed_vma *)
1526 bfd_zalloc (abfd, size));
1527 if (local_got_refcounts == NULL)
1528 return false;
1529 elf_local_got_refcounts (abfd) = local_got_refcounts;
1530 _bfd_sparc_elf_local_got_tls_type (abfd)
1531 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1532 }
1533
1534 if (r_type != R_SPARC_GOTDATA_OP_HIX22
1535 && r_type != R_SPARC_GOTDATA_OP_LOX10)
1536 local_got_refcounts[r_symndx] += 1;
1537
1538 old_tls_type
1539 = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1540 }
1541
1542 /* If a TLS symbol is accessed using IE at least once, there is no
1543 point in using the dynamic model for it. */
1544 if (old_tls_type != tls_type)
1545 {
1546 if (old_tls_type == GOT_UNKNOWN)
1547 ;
1548 else if (old_tls_type == GOT_TLS_GD && tls_type == GOT_TLS_IE)
1549 ;
1550 else if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1551 tls_type = old_tls_type;
1552 else
1553 {
1554 _bfd_error_handler
1555 /* xgettext:c-format */
1556 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1557 abfd, h ? h->root.root.string : "<local>");
1558 return false;
1559 }
1560
1561 if (h != NULL)
1562 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1563 else
1564 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1565 }
1566 }
1567
1568 if (!htab->elf.sgot
1569 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
1570 return false;
1571
1572 if (eh != NULL)
1573 {
1574 eh->has_got_reloc = 1;
1575 if (r_type == R_SPARC_GOT10
1576 || r_type == R_SPARC_GOT13
1577 || r_type == R_SPARC_GOT22)
1578 eh->has_old_style_got_reloc = 1;
1579 }
1580 break;
1581
1582 case R_SPARC_TLS_GD_CALL:
1583 case R_SPARC_TLS_LDM_CALL:
1584 if (bfd_link_executable (info))
1585 break;
1586
1587 /* Essentially R_SPARC_WPLT30 relocs against __tls_get_addr. */
1588 h = (struct elf_link_hash_entry *)
1589 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
1590 false, true);
1591 BFD_ASSERT (h != NULL);
1592 /* Fall through */
1593
1594 case R_SPARC_WPLT30:
1595 case R_SPARC_PLT32:
1596 case R_SPARC_PLT64:
1597 case R_SPARC_HIPLT22:
1598 case R_SPARC_LOPLT10:
1599 case R_SPARC_PCPLT32:
1600 case R_SPARC_PCPLT22:
1601 case R_SPARC_PCPLT10:
1602 /* This symbol requires a procedure linkage table entry.
1603 We actually build the entry in adjust_dynamic_symbol,
1604 because this might be a case of linking PIC code without
1605 linking in any dynamic objects, in which case we don't
1606 need to generate a procedure linkage table after all. */
1607
1608 if (h == NULL)
1609 {
1610 if (! ABI_64_P (abfd))
1611 {
1612 /* The Solaris native assembler will generate a WPLT30
1613 reloc for a local symbol if you assemble a call from
1614 one section to another when using -K pic. We treat
1615 it as WDISP30. */
1616 if (r_type == R_SPARC_PLT32)
1617 goto r_sparc_plt32;
1618 break;
1619 }
1620 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1621 else if (r_type == R_SPARC_WPLT30)
1622 break;
1623
1624 /* It does not make sense to have a procedure linkage
1625 table entry for a local symbol. */
1626 bfd_set_error (bfd_error_bad_value);
1627 return false;
1628 }
1629
1630 h->needs_plt = 1;
1631
1632 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
1633 goto r_sparc_plt32;
1634
1635 h->plt.refcount += 1;
1636
1637 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1638 eh->has_got_reloc = 1;
1639 break;
1640
1641 case R_SPARC_PC10:
1642 case R_SPARC_PC22:
1643 case R_SPARC_PC_HH22:
1644 case R_SPARC_PC_HM10:
1645 case R_SPARC_PC_LM22:
1646 if (h != NULL)
1647 h->non_got_ref = 1;
1648
1649 if (h != NULL
1650 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1651 break;
1652 /* Fall through. */
1653
1654 case R_SPARC_DISP8:
1655 case R_SPARC_DISP16:
1656 case R_SPARC_DISP32:
1657 case R_SPARC_DISP64:
1658 case R_SPARC_WDISP30:
1659 case R_SPARC_WDISP22:
1660 case R_SPARC_WDISP19:
1661 case R_SPARC_WDISP16:
1662 case R_SPARC_WDISP10:
1663 case R_SPARC_8:
1664 case R_SPARC_16:
1665 case R_SPARC_32:
1666 case R_SPARC_HI22:
1667 case R_SPARC_22:
1668 case R_SPARC_13:
1669 case R_SPARC_LO10:
1670 case R_SPARC_UA16:
1671 case R_SPARC_UA32:
1672 case R_SPARC_10:
1673 case R_SPARC_11:
1674 case R_SPARC_64:
1675 case R_SPARC_OLO10:
1676 case R_SPARC_HH22:
1677 case R_SPARC_HM10:
1678 case R_SPARC_LM22:
1679 case R_SPARC_7:
1680 case R_SPARC_5:
1681 case R_SPARC_6:
1682 case R_SPARC_HIX22:
1683 case R_SPARC_LOX10:
1684 case R_SPARC_H44:
1685 case R_SPARC_M44:
1686 case R_SPARC_L44:
1687 case R_SPARC_H34:
1688 case R_SPARC_UA64:
1689 if (h != NULL)
1690 h->non_got_ref = 1;
1691
1692 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
1693 eh->has_non_got_reloc = 1;
1694
1695 r_sparc_plt32:
1696 if (h != NULL && !bfd_link_pic (info))
1697 {
1698 /* We may need a .plt entry if the function this reloc
1699 refers to is in a shared lib. */
1700 h->plt.refcount += 1;
1701 }
1702
1703 /* If we are creating a shared library, and this is a reloc
1704 against a global symbol, or a non PC relative reloc
1705 against a local symbol, then we need to copy the reloc
1706 into the shared library. However, if we are linking with
1707 -Bsymbolic, we do not need to copy a reloc against a
1708 global symbol which is defined in an object we are
1709 including in the link (i.e., DEF_REGULAR is set). At
1710 this point we have not seen all the input files, so it is
1711 possible that DEF_REGULAR is not set now but will be set
1712 later (it is never cleared). In case of a weak definition,
1713 DEF_REGULAR may be cleared later by a strong definition in
1714 a shared library. We account for that possibility below by
1715 storing information in the relocs_copied field of the hash
1716 table entry. A similar situation occurs when creating
1717 shared libraries and symbol visibility changes render the
1718 symbol local.
1719
1720 If on the other hand, we are creating an executable, we
1721 may need to keep relocations for symbols satisfied by a
1722 dynamic library if we manage to avoid copy relocs for the
1723 symbol. */
1724 if ((bfd_link_pic (info)
1725 && (sec->flags & SEC_ALLOC) != 0
1726 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1727 || (h != NULL
1728 && (! SYMBOLIC_BIND (info, h)
1729 || h->root.type == bfd_link_hash_defweak
1730 || !h->def_regular))))
1731 || (!bfd_link_pic (info)
1732 && (sec->flags & SEC_ALLOC) != 0
1733 && h != NULL
1734 && (h->root.type == bfd_link_hash_defweak
1735 || !h->def_regular))
1736 || (!bfd_link_pic (info)
1737 && h != NULL
1738 && h->type == STT_GNU_IFUNC))
1739 {
1740 struct elf_dyn_relocs *p;
1741 struct elf_dyn_relocs **head;
1742
1743 /* When creating a shared object, we must copy these
1744 relocs into the output file. We create a reloc
1745 section in dynobj and make room for the reloc. */
1746 if (sreloc == NULL)
1747 {
1748 sreloc = _bfd_elf_make_dynamic_reloc_section
1749 (sec, htab->elf.dynobj, htab->word_align_power,
1750 abfd, /*rela?*/ true);
1751
1752 if (sreloc == NULL)
1753 return false;
1754 }
1755
1756 /* If this is a global symbol, we count the number of
1757 relocations we need for this symbol. */
1758 if (h != NULL)
1759 head = &h->dyn_relocs;
1760 else
1761 {
1762 /* Track dynamic relocs needed for local syms too.
1763 We really need local syms available to do this
1764 easily. Oh well. */
1765 asection *s;
1766 void *vpp;
1767
1768 BFD_ASSERT (isym != NULL);
1769 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1770 if (s == NULL)
1771 s = sec;
1772
1773 vpp = &elf_section_data (s)->local_dynrel;
1774 head = (struct elf_dyn_relocs **) vpp;
1775 }
1776
1777 p = *head;
1778 if (p == NULL || p->sec != sec)
1779 {
1780 size_t amt = sizeof *p;
1781 p = ((struct elf_dyn_relocs *)
1782 bfd_alloc (htab->elf.dynobj, amt));
1783 if (p == NULL)
1784 return false;
1785 p->next = *head;
1786 *head = p;
1787 p->sec = sec;
1788 p->count = 0;
1789 p->pc_count = 0;
1790 }
1791
1792 p->count += 1;
1793 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1794 p->pc_count += 1;
1795 }
1796
1797 break;
1798
1799 case R_SPARC_GNU_VTINHERIT:
1800 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1801 return false;
1802 break;
1803
1804 case R_SPARC_GNU_VTENTRY:
1805 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1806 return false;
1807 break;
1808
1809 case R_SPARC_REGISTER:
1810 /* Nothing to do. */
1811 break;
1812
1813 default:
1814 break;
1815 }
1816 }
1817
1818 return true;
1819 }
1820
1821 asection *
_bfd_sparc_elf_gc_mark_hook(asection * sec,struct bfd_link_info * info,Elf_Internal_Rela * rel,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)1822 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1823 struct bfd_link_info *info,
1824 Elf_Internal_Rela *rel,
1825 struct elf_link_hash_entry *h,
1826 Elf_Internal_Sym *sym)
1827 {
1828 if (h != NULL)
1829 switch (SPARC_ELF_R_TYPE (rel->r_info))
1830 {
1831 case R_SPARC_GNU_VTINHERIT:
1832 case R_SPARC_GNU_VTENTRY:
1833 return NULL;
1834 }
1835
1836 if (!bfd_link_executable (info))
1837 {
1838 switch (SPARC_ELF_R_TYPE (rel->r_info))
1839 {
1840 case R_SPARC_TLS_GD_CALL:
1841 case R_SPARC_TLS_LDM_CALL:
1842 /* This reloc implicitly references __tls_get_addr. We know
1843 another reloc will reference the same symbol as the one
1844 on this reloc, so the real symbol and section will be
1845 gc marked when processing the other reloc. That lets
1846 us handle __tls_get_addr here. */
1847 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1848 false, false, true);
1849 BFD_ASSERT (h != NULL);
1850 h->mark = 1;
1851 if (h->is_weakalias)
1852 weakdef (h)->mark = 1;
1853 sym = NULL;
1854 }
1855 }
1856
1857 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1858 }
1859
1860 static Elf_Internal_Rela *
sparc_elf_find_reloc_at_ofs(Elf_Internal_Rela * rel,Elf_Internal_Rela * relend,bfd_vma offset)1861 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1862 Elf_Internal_Rela *relend,
1863 bfd_vma offset)
1864 {
1865 while (rel < relend)
1866 {
1867 if (rel->r_offset == offset)
1868 return rel;
1869 rel++;
1870 }
1871 return NULL;
1872 }
1873
1874 /* Remove undefined weak symbol from the dynamic symbol table if it
1875 is resolved to 0. */
1876
1877 bool
_bfd_sparc_elf_fixup_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)1878 _bfd_sparc_elf_fixup_symbol (struct bfd_link_info *info,
1879 struct elf_link_hash_entry *h)
1880 {
1881 if (h->dynindx != -1
1882 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
1883 _bfd_sparc_elf_hash_entry (h)))
1884 {
1885 h->dynindx = -1;
1886 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1887 h->dynstr_index);
1888 }
1889 return true;
1890 }
1891
1892 /* Adjust a symbol defined by a dynamic object and referenced by a
1893 regular object. The current definition is in some section of the
1894 dynamic object, but we're not including those sections. We have to
1895 change the definition to something the rest of the link can
1896 understand. */
1897
1898 bool
_bfd_sparc_elf_adjust_dynamic_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)1899 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1900 struct elf_link_hash_entry *h)
1901 {
1902 struct _bfd_sparc_elf_link_hash_table *htab;
1903 asection *s, *srel;
1904
1905 htab = _bfd_sparc_elf_hash_table (info);
1906 BFD_ASSERT (htab != NULL);
1907
1908 /* Make sure we know what is going on here. */
1909 BFD_ASSERT (htab->elf.dynobj != NULL
1910 && (h->needs_plt
1911 || h->type == STT_GNU_IFUNC
1912 || h->is_weakalias
1913 || (h->def_dynamic
1914 && h->ref_regular
1915 && !h->def_regular)));
1916
1917 /* If this is a function, put it in the procedure linkage table. We
1918 will fill in the contents of the procedure linkage table later
1919 (although we could actually do it here). The STT_NOTYPE
1920 condition is a hack specifically for the Oracle libraries
1921 delivered for Solaris; for some inexplicable reason, they define
1922 some of their functions as STT_NOTYPE when they really should be
1923 STT_FUNC. */
1924 if (h->type == STT_FUNC
1925 || h->type == STT_GNU_IFUNC
1926 || h->needs_plt
1927 || (h->type == STT_NOTYPE
1928 && (h->root.type == bfd_link_hash_defined
1929 || h->root.type == bfd_link_hash_defweak)
1930 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1931 {
1932 if (h->plt.refcount <= 0
1933 || (h->type != STT_GNU_IFUNC
1934 && (SYMBOL_CALLS_LOCAL (info, h)
1935 || (h->root.type == bfd_link_hash_undefweak
1936 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))))
1937 {
1938 /* This case can occur if we saw a WPLT30 reloc in an input
1939 file, but the symbol was never referred to by a dynamic
1940 object, or if all references were garbage collected. In
1941 such a case, we don't actually need to build a procedure
1942 linkage table, and we can just do a WDISP30 reloc instead. */
1943 h->plt.offset = (bfd_vma) -1;
1944 h->needs_plt = 0;
1945 }
1946
1947 return true;
1948 }
1949 else
1950 h->plt.offset = (bfd_vma) -1;
1951
1952 /* If this is a weak symbol, and there is a real definition, the
1953 processor independent code will have arranged for us to see the
1954 real definition first, and we can just use the same value. */
1955 if (h->is_weakalias)
1956 {
1957 struct elf_link_hash_entry *def = weakdef (h);
1958 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1959 h->root.u.def.section = def->root.u.def.section;
1960 h->root.u.def.value = def->root.u.def.value;
1961 return true;
1962 }
1963
1964 /* This is a reference to a symbol defined by a dynamic object which
1965 is not a function. */
1966
1967 /* If we are creating a shared library, we must presume that the
1968 only references to the symbol are via the global offset table.
1969 For such cases we need not do anything here; the relocations will
1970 be handled correctly by relocate_section. */
1971 if (bfd_link_pic (info))
1972 return true;
1973
1974 /* If there are no references to this symbol that do not use the
1975 GOT, we don't need to generate a copy reloc. */
1976 if (!h->non_got_ref)
1977 return true;
1978
1979 /* If -z nocopyreloc was given, we won't generate them either. */
1980 if (info->nocopyreloc)
1981 {
1982 h->non_got_ref = 0;
1983 return true;
1984 }
1985
1986 /* If we don't find any dynamic relocs in read-only sections, then
1987 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1988 if (!_bfd_elf_readonly_dynrelocs (h))
1989 {
1990 h->non_got_ref = 0;
1991 return true;
1992 }
1993
1994 /* We must allocate the symbol in our .dynbss section, which will
1995 become part of the .bss section of the executable. There will be
1996 an entry for this symbol in the .dynsym section. The dynamic
1997 object will contain position independent code, so all references
1998 from the dynamic object to this symbol will go through the global
1999 offset table. The dynamic linker will use the .dynsym entry to
2000 determine the address it must put in the global offset table, so
2001 both the dynamic object and the regular object will refer to the
2002 same memory location for the variable. */
2003
2004 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2005 to copy the initial value out of the dynamic object and into the
2006 runtime process image. We need to remember the offset into the
2007 .rel.bss section we are going to use. */
2008 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2009 {
2010 s = htab->elf.sdynrelro;
2011 srel = htab->elf.sreldynrelro;
2012 }
2013 else
2014 {
2015 s = htab->elf.sdynbss;
2016 srel = htab->elf.srelbss;
2017 }
2018 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2019 {
2020 srel->size += SPARC_ELF_RELA_BYTES (htab);
2021 h->needs_copy = 1;
2022 }
2023
2024 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2025 }
2026
2027 /* Allocate space in .plt, .got and associated reloc sections for
2028 dynamic relocs. */
2029
2030 static bool
allocate_dynrelocs(struct elf_link_hash_entry * h,void * inf)2031 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2032 {
2033 struct bfd_link_info *info;
2034 struct _bfd_sparc_elf_link_hash_table *htab;
2035 struct _bfd_sparc_elf_link_hash_entry *eh;
2036 struct elf_dyn_relocs *p;
2037 bool resolved_to_zero;
2038
2039 if (h->root.type == bfd_link_hash_indirect)
2040 return true;
2041
2042 info = (struct bfd_link_info *) inf;
2043 htab = _bfd_sparc_elf_hash_table (info);
2044 BFD_ASSERT (htab != NULL);
2045
2046 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2047 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
2048
2049 if ((htab->elf.dynamic_sections_created
2050 && h->plt.refcount > 0)
2051 || (h->type == STT_GNU_IFUNC
2052 && h->def_regular
2053 && h->ref_regular))
2054 {
2055 /* Undefined weak syms won't yet be marked as dynamic. */
2056 if (h->root.type == bfd_link_hash_undefweak
2057 && !resolved_to_zero
2058 && h->dynindx == -1
2059 && !h->forced_local)
2060 {
2061 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2062 return false;
2063 }
2064
2065 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
2066 || (h->type == STT_GNU_IFUNC
2067 && h->def_regular))
2068 {
2069 asection *s = htab->elf.splt;
2070
2071 if (s == NULL)
2072 s = htab->elf.iplt;
2073
2074 /* Allocate room for the header. */
2075 if (s->size == 0)
2076 {
2077 s->size = htab->plt_header_size;
2078
2079 /* Allocate space for the .rela.plt.unloaded relocations. */
2080 if (htab->elf.target_os == is_vxworks
2081 && !bfd_link_pic (info))
2082 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2083 }
2084
2085 /* The procedure linkage table size is bounded by the magnitude
2086 of the offset we can describe in the entry. */
2087 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2088 (((bfd_vma)1 << 31) << 1) : 0x400000))
2089 {
2090 bfd_set_error (bfd_error_bad_value);
2091 return false;
2092 }
2093
2094 if (SPARC_ELF_WORD_BYTES(htab) == 8
2095 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2096 {
2097 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2098
2099
2100 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2101
2102 h->plt.offset = (s->size - (off * 8));
2103 }
2104 else
2105 h->plt.offset = s->size;
2106
2107 /* If this symbol is not defined in a regular file, and we are
2108 not generating a shared library, then set the symbol to this
2109 location in the .plt. This is required to make function
2110 pointers compare as equal between the normal executable and
2111 the shared library. */
2112 if (! bfd_link_pic (info)
2113 && !h->def_regular)
2114 {
2115 h->root.u.def.section = s;
2116 h->root.u.def.value = h->plt.offset;
2117 }
2118
2119 /* Make room for this entry. */
2120 s->size += htab->plt_entry_size;
2121
2122 /* There should be no PLT relocations against resolved undefined
2123 weak symbols in the executable. */
2124 if (!resolved_to_zero)
2125 {
2126 /* We also need to make an entry in the .rela.plt section. */
2127 if (s == htab->elf.splt)
2128 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2129 else
2130 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2131 }
2132
2133 if (htab->elf.target_os == is_vxworks)
2134 {
2135 /* Allocate space for the .got.plt entry. */
2136 htab->elf.sgotplt->size += 4;
2137
2138 /* ...and for the .rela.plt.unloaded relocations. */
2139 if (!bfd_link_pic (info))
2140 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2141 }
2142 }
2143 else
2144 {
2145 h->plt.offset = (bfd_vma) -1;
2146 h->needs_plt = 0;
2147 }
2148 }
2149 else
2150 {
2151 h->plt.offset = (bfd_vma) -1;
2152 h->needs_plt = 0;
2153 }
2154
2155 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2156 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2157 if (h->got.refcount > 0
2158 && bfd_link_executable (info)
2159 && h->dynindx == -1
2160 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2161 h->got.offset = (bfd_vma) -1;
2162 else if (h->got.refcount > 0)
2163 {
2164 asection *s;
2165 bool dyn;
2166 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2167
2168 /* Undefined weak syms won't yet be marked as dynamic. */
2169 if (h->root.type == bfd_link_hash_undefweak
2170 && !resolved_to_zero
2171 && h->dynindx == -1
2172 && !h->forced_local)
2173 {
2174 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2175 return false;
2176 }
2177
2178 s = htab->elf.sgot;
2179 h->got.offset = s->size;
2180 s->size += SPARC_ELF_WORD_BYTES (htab);
2181 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2182 if (tls_type == GOT_TLS_GD)
2183 s->size += SPARC_ELF_WORD_BYTES (htab);
2184 dyn = htab->elf.dynamic_sections_created;
2185 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2186 R_SPARC_TLS_GD_{HI22,LO10} needs one if local and two if global. */
2187 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2188 || tls_type == GOT_TLS_IE
2189 || h->type == STT_GNU_IFUNC)
2190 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2191 else if (tls_type == GOT_TLS_GD)
2192 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2193 else if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
2194 /* Even if the symbol isn't dynamic, we may generate a
2195 reloc for the dynamic linker in PIC mode. */
2196 || (h->dynindx == -1
2197 && !h->forced_local
2198 && h->root.type != bfd_link_hash_undefweak
2199 && bfd_link_pic (info)))
2200 /* No dynamic relocations are needed against resolved
2201 undefined weak symbols in an executable. */
2202 && !(h->root.type == bfd_link_hash_undefweak
2203 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2204 || resolved_to_zero)))
2205 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2206 }
2207 else
2208 h->got.offset = (bfd_vma) -1;
2209
2210 if (h->dyn_relocs == NULL)
2211 return true;
2212
2213 /* In the shared -Bsymbolic case, discard space allocated for
2214 dynamic pc-relative relocs against symbols which turn out to be
2215 defined in regular objects. For the normal shared case, discard
2216 space for pc-relative relocs that have become local due to symbol
2217 visibility changes. */
2218
2219 if (bfd_link_pic (info))
2220 {
2221 if (SYMBOL_CALLS_LOCAL (info, h))
2222 {
2223 struct elf_dyn_relocs **pp;
2224
2225 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2226 {
2227 p->count -= p->pc_count;
2228 p->pc_count = 0;
2229 if (p->count == 0)
2230 *pp = p->next;
2231 else
2232 pp = &p->next;
2233 }
2234 }
2235
2236 if (htab->elf.target_os == is_vxworks)
2237 {
2238 struct elf_dyn_relocs **pp;
2239
2240 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2241 {
2242 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2243 *pp = p->next;
2244 else
2245 pp = &p->next;
2246 }
2247 }
2248
2249 /* Also discard relocs on undefined weak syms with non-default
2250 visibility or in PIE. */
2251 if (h->dyn_relocs != NULL
2252 && h->root.type == bfd_link_hash_undefweak)
2253 {
2254 /* An undefined weak symbol is never
2255 bound locally in a shared library. */
2256
2257 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2258 || resolved_to_zero)
2259 {
2260 if (h->non_got_ref)
2261 {
2262 /* Keep dynamic non-GOT/non-PLT relocation so that we
2263 can branch to 0 without PLT. */
2264 struct elf_dyn_relocs **pp;
2265
2266 for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
2267 if (p->pc_count == 0)
2268 *pp = p->next;
2269 else
2270 {
2271 /* Remove other relocations. */
2272 p->count = p->pc_count;
2273 pp = &p->next;
2274 }
2275
2276 if (h->dyn_relocs != NULL)
2277 {
2278 /* Make sure undefined weak symbols are output
2279 as dynamic symbols in PIEs for dynamic non-GOT
2280 non-PLT reloations. */
2281 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2282 return false;
2283 }
2284 }
2285 else
2286 h->dyn_relocs = NULL;
2287 }
2288
2289 /* Make sure undefined weak symbols are output as a dynamic
2290 symbol in PIEs. */
2291 else if (h->dynindx == -1
2292 && !h->forced_local)
2293 {
2294 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2295 return false;
2296 }
2297 }
2298 }
2299 else
2300 {
2301 /* For the non-shared case, discard space for relocs against
2302 symbols which turn out to need copy relocs or are not
2303 dynamic. */
2304
2305 if ((!h->non_got_ref
2306 || (h->root.type == bfd_link_hash_undefweak
2307 && !resolved_to_zero))
2308 && ((h->def_dynamic
2309 && !h->def_regular)
2310 || (htab->elf.dynamic_sections_created
2311 && (h->root.type == bfd_link_hash_undefweak
2312 || h->root.type == bfd_link_hash_undefined))))
2313 {
2314 /* Undefined weak syms won't yet be marked as dynamic. */
2315 if (h->root.type == bfd_link_hash_undefweak
2316 && !resolved_to_zero
2317 && h->dynindx == -1
2318 && !h->forced_local)
2319 {
2320 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2321 return false;
2322 }
2323
2324 /* If that succeeded, we know we'll be keeping all the
2325 relocs. */
2326 if (h->dynindx != -1)
2327 goto keep;
2328 }
2329
2330 h->dyn_relocs = NULL;
2331
2332 keep: ;
2333 }
2334
2335 /* Finally, allocate space. */
2336 for (p = h->dyn_relocs; p != NULL; p = p->next)
2337 {
2338 asection *sreloc = elf_section_data (p->sec)->sreloc;
2339 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2340 }
2341
2342 return true;
2343 }
2344
2345 /* Allocate space in .plt, .got and associated reloc sections for
2346 local dynamic relocs. */
2347
2348 static int
allocate_local_dynrelocs(void ** slot,void * inf)2349 allocate_local_dynrelocs (void **slot, void *inf)
2350 {
2351 struct elf_link_hash_entry *h
2352 = (struct elf_link_hash_entry *) *slot;
2353
2354 if (h->type != STT_GNU_IFUNC
2355 || !h->def_regular
2356 || !h->ref_regular
2357 || !h->forced_local
2358 || h->root.type != bfd_link_hash_defined)
2359 abort ();
2360
2361 return allocate_dynrelocs (h, inf);
2362 }
2363
2364 /* Return true if the dynamic symbol for a given section should be
2365 omitted when creating a shared library. */
2366
2367 bool
_bfd_sparc_elf_omit_section_dynsym(bfd * output_bfd,struct bfd_link_info * info,asection * p)2368 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2369 struct bfd_link_info *info,
2370 asection *p)
2371 {
2372 /* We keep the .got section symbol so that explicit relocations
2373 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2374 can be turned into relocations against the .got symbol. */
2375 if (strcmp (p->name, ".got") == 0)
2376 return false;
2377
2378 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
2379 }
2380
2381 /* Set the sizes of the dynamic sections. */
2382
2383 bool
_bfd_sparc_elf_size_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)2384 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2385 struct bfd_link_info *info)
2386 {
2387 struct _bfd_sparc_elf_link_hash_table *htab;
2388 bfd *dynobj;
2389 asection *s;
2390 bfd *ibfd;
2391
2392 htab = _bfd_sparc_elf_hash_table (info);
2393 BFD_ASSERT (htab != NULL);
2394 dynobj = htab->elf.dynobj;
2395 BFD_ASSERT (dynobj != NULL);
2396
2397 if (elf_hash_table (info)->dynamic_sections_created)
2398 {
2399 /* Set the contents of the .interp section to the interpreter. */
2400 if (bfd_link_executable (info) && !info->nointerp)
2401 {
2402 s = bfd_get_linker_section (dynobj, ".interp");
2403 BFD_ASSERT (s != NULL);
2404 s->size = htab->dynamic_interpreter_size;
2405 s->contents = (unsigned char *) htab->dynamic_interpreter;
2406 htab->interp = s;
2407 }
2408 }
2409
2410 /* Set up .got offsets for local syms, and space for local dynamic
2411 relocs. */
2412 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2413 {
2414 bfd_signed_vma *local_got;
2415 bfd_signed_vma *end_local_got;
2416 char *local_tls_type;
2417 bfd_size_type locsymcount;
2418 Elf_Internal_Shdr *symtab_hdr;
2419 asection *srel;
2420
2421 if (! is_sparc_elf (ibfd))
2422 continue;
2423
2424 for (s = ibfd->sections; s != NULL; s = s->next)
2425 {
2426 struct elf_dyn_relocs *p;
2427
2428 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2429 {
2430 if (!bfd_is_abs_section (p->sec)
2431 && bfd_is_abs_section (p->sec->output_section))
2432 {
2433 /* Input section has been discarded, either because
2434 it is a copy of a linkonce section or due to
2435 linker script /DISCARD/, so we'll be discarding
2436 the relocs too. */
2437 }
2438 else if (htab->elf.target_os == is_vxworks
2439 && strcmp (p->sec->output_section->name,
2440 ".tls_vars") == 0)
2441 {
2442 /* Relocations in vxworks .tls_vars sections are
2443 handled specially by the loader. */
2444 }
2445 else if (p->count != 0)
2446 {
2447 srel = elf_section_data (p->sec)->sreloc;
2448 if (!htab->elf.dynamic_sections_created)
2449 srel = htab->elf.irelplt;
2450 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2451 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2452 {
2453 info->flags |= DF_TEXTREL;
2454 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
2455 p->sec->owner, p->sec);
2456 }
2457 }
2458 }
2459 }
2460
2461 local_got = elf_local_got_refcounts (ibfd);
2462 if (!local_got)
2463 continue;
2464
2465 symtab_hdr = &elf_symtab_hdr (ibfd);
2466 locsymcount = symtab_hdr->sh_info;
2467 end_local_got = local_got + locsymcount;
2468 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2469 s = htab->elf.sgot;
2470 srel = htab->elf.srelgot;
2471 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2472 {
2473 if (*local_got > 0)
2474 {
2475 *local_got = s->size;
2476 s->size += SPARC_ELF_WORD_BYTES (htab);
2477 if (*local_tls_type == GOT_TLS_GD)
2478 s->size += SPARC_ELF_WORD_BYTES (htab);
2479 if (bfd_link_pic (info)
2480 || *local_tls_type == GOT_TLS_GD
2481 || *local_tls_type == GOT_TLS_IE)
2482 srel->size += SPARC_ELF_RELA_BYTES (htab);
2483 }
2484 else
2485 *local_got = (bfd_vma) -1;
2486 }
2487 }
2488
2489 if (htab->tls_ldm_got.refcount > 0)
2490 {
2491 /* Allocate 2 got entries and 1 dynamic reloc for
2492 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2493 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2494 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2495 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2496 }
2497 else
2498 htab->tls_ldm_got.offset = -1;
2499
2500 /* Allocate global sym .plt and .got entries, and space for global
2501 sym dynamic relocs. */
2502 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2503
2504 /* Allocate .plt and .got entries, and space for local symbols. */
2505 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2506
2507 if (! ABI_64_P (output_bfd)
2508 && htab->elf.target_os != is_vxworks
2509 && elf_hash_table (info)->dynamic_sections_created)
2510 {
2511 /* Make space for the trailing nop in .plt. */
2512 if (htab->elf.splt->size > 0)
2513 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2514
2515 /* If the .got section is more than 0x1000 bytes, we add
2516 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2517 bit relocations have a greater chance of working.
2518
2519 FIXME: Make this optimization work for 64-bit too. */
2520 if (htab->elf.sgot->size >= 0x1000
2521 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2522 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2523 }
2524
2525 /* The check_relocs and adjust_dynamic_symbol entry points have
2526 determined the sizes of the various dynamic sections. Allocate
2527 memory for them. */
2528 for (s = dynobj->sections; s != NULL; s = s->next)
2529 {
2530 if ((s->flags & SEC_LINKER_CREATED) == 0)
2531 continue;
2532
2533 if (s == htab->elf.splt
2534 || s == htab->elf.sgot
2535 || s == htab->elf.sdynbss
2536 || s == htab->elf.sdynrelro
2537 || s == htab->elf.iplt
2538 || s == htab->elf.sgotplt)
2539 {
2540 /* Strip this section if we don't need it; see the
2541 comment below. */
2542 }
2543 else if (startswith (s->name, ".rela"))
2544 {
2545 if (s->size != 0)
2546 {
2547 /* We use the reloc_count field as a counter if we need
2548 to copy relocs into the output file. */
2549 s->reloc_count = 0;
2550 }
2551 }
2552 else
2553 {
2554 /* It's not one of our sections. */
2555 continue;
2556 }
2557
2558 if (s->size == 0)
2559 {
2560 /* If we don't need this section, strip it from the
2561 output file. This is mostly to handle .rela.bss and
2562 .rela.plt. We must create both sections in
2563 create_dynamic_sections, because they must be created
2564 before the linker maps input sections to output
2565 sections. The linker does that before
2566 adjust_dynamic_symbol is called, and it is that
2567 function which decides whether anything needs to go
2568 into these sections. */
2569 s->flags |= SEC_EXCLUDE;
2570 continue;
2571 }
2572
2573 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2574 continue;
2575
2576 /* Allocate memory for the section contents. Zero the memory
2577 for the benefit of .rela.plt, which has 4 unused entries
2578 at the beginning, and we don't want garbage. */
2579 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2580 if (s->contents == NULL)
2581 return false;
2582 }
2583
2584 if (elf_hash_table (info)->dynamic_sections_created)
2585 {
2586 /* Add some entries to the .dynamic section. We fill in the
2587 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2588 must add the entries now so that we get the correct size for
2589 the .dynamic section. The DT_DEBUG entry is filled in by the
2590 dynamic linker and used by the debugger. */
2591 #define add_dynamic_entry(TAG, VAL) \
2592 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2593
2594 if (!_bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
2595 true))
2596 return false;
2597
2598 if (ABI_64_P (output_bfd))
2599 {
2600 int reg;
2601 struct _bfd_sparc_elf_app_reg * app_regs;
2602 struct elf_strtab_hash *dynstr;
2603 struct elf_link_hash_table *eht = elf_hash_table (info);
2604
2605 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2606 entries if needed. */
2607 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2608 dynstr = eht->dynstr;
2609
2610 for (reg = 0; reg < 4; reg++)
2611 if (app_regs [reg].name != NULL)
2612 {
2613 struct elf_link_local_dynamic_entry *entry, *e;
2614
2615 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2616 return false;
2617
2618 entry = (struct elf_link_local_dynamic_entry *)
2619 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2620 if (entry == NULL)
2621 return false;
2622
2623 /* We cheat here a little bit: the symbol will not be local, so we
2624 put it at the end of the dynlocal linked list. We will fix it
2625 later on, as we have to fix other fields anyway. */
2626 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2627 entry->isym.st_size = 0;
2628 if (*app_regs [reg].name != '\0')
2629 entry->isym.st_name
2630 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, false);
2631 else
2632 entry->isym.st_name = 0;
2633 entry->isym.st_other = 0;
2634 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2635 STT_REGISTER);
2636 entry->isym.st_shndx = app_regs [reg].shndx;
2637 entry->isym.st_target_internal = 0;
2638 entry->next = NULL;
2639 entry->input_bfd = output_bfd;
2640 entry->input_indx = -1;
2641
2642 if (eht->dynlocal == NULL)
2643 eht->dynlocal = entry;
2644 else
2645 {
2646 for (e = eht->dynlocal; e->next; e = e->next)
2647 ;
2648 e->next = entry;
2649 }
2650 eht->dynsymcount++;
2651 }
2652 }
2653 }
2654 #undef add_dynamic_entry
2655
2656 return true;
2657 }
2658
2659 bool
_bfd_sparc_elf_new_section_hook(bfd * abfd,asection * sec)2660 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2661 {
2662 if (!sec->used_by_bfd)
2663 {
2664 struct _bfd_sparc_elf_section_data *sdata;
2665 size_t amt = sizeof (*sdata);
2666
2667 sdata = bfd_zalloc (abfd, amt);
2668 if (sdata == NULL)
2669 return false;
2670 sec->used_by_bfd = sdata;
2671 }
2672
2673 return _bfd_elf_new_section_hook (abfd, sec);
2674 }
2675
2676 bool
_bfd_sparc_elf_relax_section(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_section * section,struct bfd_link_info * link_info ATTRIBUTE_UNUSED,bool * again)2677 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2678 struct bfd_section *section,
2679 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2680 bool *again)
2681 {
2682 if (bfd_link_relocatable (link_info))
2683 (*link_info->callbacks->einfo)
2684 (_("%P%F: --relax and -r may not be used together\n"));
2685
2686 *again = false;
2687 sec_do_relax (section) = 1;
2688 return true;
2689 }
2690
2691 /* Return the base VMA address which should be subtracted from real addresses
2692 when resolving @dtpoff relocation.
2693 This is PT_TLS segment p_vaddr. */
2694
2695 static bfd_vma
dtpoff_base(struct bfd_link_info * info)2696 dtpoff_base (struct bfd_link_info *info)
2697 {
2698 /* If tls_sec is NULL, we should have signalled an error already. */
2699 if (elf_hash_table (info)->tls_sec == NULL)
2700 return 0;
2701 return elf_hash_table (info)->tls_sec->vma;
2702 }
2703
2704 /* Return the relocation value for @tpoff relocation
2705 if STT_TLS virtual address is ADDRESS. */
2706
2707 static bfd_vma
tpoff(struct bfd_link_info * info,bfd_vma address)2708 tpoff (struct bfd_link_info *info, bfd_vma address)
2709 {
2710 struct elf_link_hash_table *htab = elf_hash_table (info);
2711 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2712 bfd_vma static_tls_size;
2713
2714 /* If tls_sec is NULL, we should have signalled an error already. */
2715 if (htab->tls_sec == NULL)
2716 return 0;
2717
2718 /* Consider special static TLS alignment requirements. */
2719 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2720 return address - static_tls_size - htab->tls_sec->vma;
2721 }
2722
2723 /* Return the relocation value for a %gdop relocation. */
2724
2725 static bfd_vma
gdopoff(struct bfd_link_info * info,bfd_vma address)2726 gdopoff (struct bfd_link_info *info, bfd_vma address)
2727 {
2728 struct elf_link_hash_table *htab = elf_hash_table (info);
2729 bfd_vma got_base;
2730
2731 got_base = (htab->hgot->root.u.def.value
2732 + htab->hgot->root.u.def.section->output_offset
2733 + htab->hgot->root.u.def.section->output_section->vma);
2734
2735 return address - got_base;
2736 }
2737
2738 /* Return whether H is local and its ADDRESS is within 4G of
2739 _GLOBAL_OFFSET_TABLE_ and thus the offset may be calculated by a
2740 sethi, xor sequence. */
2741
2742 static bool
gdop_relative_offset_ok(struct bfd_link_info * info,struct elf_link_hash_entry * h,bfd_vma address ATTRIBUTE_UNUSED)2743 gdop_relative_offset_ok (struct bfd_link_info *info,
2744 struct elf_link_hash_entry *h,
2745 bfd_vma address ATTRIBUTE_UNUSED)
2746 {
2747 if (!SYMBOL_REFERENCES_LOCAL (info, h))
2748 return false;
2749 /* If H is undefined, ADDRESS will be zero. We can't allow a
2750 relative offset to "zero" when producing PIEs or shared libs.
2751 Note that to get here with an undefined symbol it must also be
2752 hidden or internal visibility. */
2753 if (bfd_link_pic (info)
2754 && h != NULL
2755 && (h->root.type == bfd_link_hash_undefweak
2756 || h->root.type == bfd_link_hash_undefined))
2757 return false;
2758 #ifdef BFD64
2759 return gdopoff (info, address) + ((bfd_vma) 1 << 32) < (bfd_vma) 2 << 32;
2760 #else
2761 return true;
2762 #endif
2763 }
2764
2765 /* Relocate a SPARC ELF section. */
2766
2767 int
_bfd_sparc_elf_relocate_section(bfd * output_bfd,struct bfd_link_info * info,bfd * input_bfd,asection * input_section,bfd_byte * contents,Elf_Internal_Rela * relocs,Elf_Internal_Sym * local_syms,asection ** local_sections)2768 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2769 struct bfd_link_info *info,
2770 bfd *input_bfd,
2771 asection *input_section,
2772 bfd_byte *contents,
2773 Elf_Internal_Rela *relocs,
2774 Elf_Internal_Sym *local_syms,
2775 asection **local_sections)
2776 {
2777 struct _bfd_sparc_elf_link_hash_table *htab;
2778 Elf_Internal_Shdr *symtab_hdr;
2779 struct elf_link_hash_entry **sym_hashes;
2780 bfd_vma *local_got_offsets;
2781 bfd_vma got_base;
2782 asection *sreloc;
2783 Elf_Internal_Rela *rel;
2784 Elf_Internal_Rela *relend;
2785 int num_relocs;
2786 bool is_vxworks_tls;
2787 const struct elf_backend_data *bed;
2788
2789 htab = _bfd_sparc_elf_hash_table (info);
2790 BFD_ASSERT (htab != NULL);
2791 symtab_hdr = &elf_symtab_hdr (input_bfd);
2792 sym_hashes = elf_sym_hashes (input_bfd);
2793 local_got_offsets = elf_local_got_offsets (input_bfd);
2794 bed = get_elf_backend_data (output_bfd);
2795
2796 if (elf_hash_table (info)->hgot == NULL)
2797 got_base = 0;
2798 else
2799 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2800
2801 sreloc = elf_section_data (input_section)->sreloc;
2802 /* We have to handle relocations in vxworks .tls_vars sections
2803 specially, because the dynamic loader is 'weird'. */
2804 is_vxworks_tls = (htab->elf.target_os == is_vxworks
2805 && bfd_link_pic (info)
2806 && !strcmp (input_section->output_section->name,
2807 ".tls_vars"));
2808
2809 rel = relocs;
2810 if (ABI_64_P (output_bfd))
2811 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2812 else
2813 num_relocs = input_section->reloc_count;
2814 relend = relocs + num_relocs;
2815 for (; rel < relend; rel++)
2816 {
2817 int r_type, tls_type;
2818 reloc_howto_type *howto;
2819 unsigned long r_symndx;
2820 struct elf_link_hash_entry *h;
2821 struct _bfd_sparc_elf_link_hash_entry *eh;
2822 Elf_Internal_Sym *sym;
2823 asection *sec;
2824 bfd_vma relocation, off;
2825 bfd_reloc_status_type r;
2826 bool is_plt = false;
2827 bool unresolved_reloc;
2828 bool resolved_to_zero;
2829 bool relative_reloc;
2830
2831 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2832 if (r_type == R_SPARC_GNU_VTINHERIT
2833 || r_type == R_SPARC_GNU_VTENTRY)
2834 continue;
2835
2836 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2837 {
2838 bfd_set_error (bfd_error_bad_value);
2839 return false;
2840 }
2841
2842 howto = _bfd_sparc_elf_howto_table + r_type;
2843 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2844 h = NULL;
2845 sym = NULL;
2846 sec = NULL;
2847 unresolved_reloc = false;
2848 if (r_symndx < symtab_hdr->sh_info)
2849 {
2850 sym = local_syms + r_symndx;
2851 sec = local_sections[r_symndx];
2852 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2853
2854 if (!bfd_link_relocatable (info)
2855 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2856 {
2857 /* Relocate against local STT_GNU_IFUNC symbol. */
2858 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
2859 rel, false);
2860 if (h == NULL)
2861 abort ();
2862
2863 /* Set STT_GNU_IFUNC symbol value. */
2864 h->root.u.def.value = sym->st_value;
2865 h->root.u.def.section = sec;
2866 }
2867 }
2868 else
2869 {
2870 bool warned, ignored;
2871
2872 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2873 r_symndx, symtab_hdr, sym_hashes,
2874 h, sec, relocation,
2875 unresolved_reloc, warned, ignored);
2876 if (warned)
2877 {
2878 /* To avoid generating warning messages about truncated
2879 relocations, set the relocation's address to be the same as
2880 the start of this section. */
2881 if (input_section->output_section != NULL)
2882 relocation = input_section->output_section->vma;
2883 else
2884 relocation = 0;
2885 }
2886 }
2887
2888 if (sec != NULL && discarded_section (sec))
2889 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2890 rel, 1, relend, howto, 0, contents);
2891
2892 if (bfd_link_relocatable (info))
2893 continue;
2894
2895 if (h != NULL
2896 && h->type == STT_GNU_IFUNC
2897 && h->def_regular)
2898 {
2899 asection *plt_sec;
2900 const char *name;
2901
2902 if ((input_section->flags & SEC_ALLOC) == 0
2903 || h->plt.offset == (bfd_vma) -1)
2904 {
2905 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2906 STT_GNU_IFUNC symbol as STT_FUNC. */
2907 if (elf_section_type (input_section) == SHT_NOTE)
2908 goto skip_ifunc;
2909
2910 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2911 sections because such sections are not SEC_ALLOC and
2912 thus ld.so will not process them. */
2913 if ((input_section->flags & SEC_ALLOC) == 0
2914 && (input_section->flags & SEC_DEBUGGING) != 0)
2915 continue;
2916
2917 _bfd_error_handler
2918 /* xgettext:c-format */
2919 (_("%pB(%pA+%#" PRIx64 "): "
2920 "unresolvable %s relocation against symbol `%s'"),
2921 input_bfd,
2922 input_section,
2923 (uint64_t) rel->r_offset,
2924 howto->name,
2925 h->root.root.string);
2926 bfd_set_error (bfd_error_bad_value);
2927 return false;
2928 }
2929
2930 plt_sec = htab->elf.splt;
2931 if (! plt_sec)
2932 plt_sec =htab->elf.iplt;
2933
2934 switch (r_type)
2935 {
2936 case R_SPARC_GOTDATA_OP:
2937 continue;
2938
2939 case R_SPARC_GOTDATA_OP_HIX22:
2940 case R_SPARC_GOTDATA_OP_LOX10:
2941 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
2942 ? R_SPARC_GOT22
2943 : R_SPARC_GOT10);
2944 howto = _bfd_sparc_elf_howto_table + r_type;
2945 /* Fall through. */
2946
2947 case R_SPARC_GOT10:
2948 case R_SPARC_GOT13:
2949 case R_SPARC_GOT22:
2950 if (htab->elf.sgot == NULL)
2951 abort ();
2952 off = h->got.offset;
2953 if (off == (bfd_vma) -1)
2954 abort();
2955 relocation = htab->elf.sgot->output_offset + off - got_base;
2956 goto do_relocation;
2957
2958 case R_SPARC_WPLT30:
2959 case R_SPARC_WDISP30:
2960 relocation = (plt_sec->output_section->vma
2961 + plt_sec->output_offset + h->plt.offset);
2962 goto do_relocation;
2963
2964 case R_SPARC_32:
2965 case R_SPARC_64:
2966 if (bfd_link_pic (info) && h->non_got_ref)
2967 {
2968 Elf_Internal_Rela outrel;
2969 bfd_vma offset;
2970
2971 offset = _bfd_elf_section_offset (output_bfd, info,
2972 input_section,
2973 rel->r_offset);
2974 if (offset == (bfd_vma) -1
2975 || offset == (bfd_vma) -2)
2976 abort();
2977
2978 outrel.r_offset = (input_section->output_section->vma
2979 + input_section->output_offset
2980 + offset);
2981
2982 if (h->dynindx == -1
2983 || h->forced_local
2984 || bfd_link_executable (info))
2985 {
2986 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
2987 0, R_SPARC_IRELATIVE);
2988 outrel.r_addend = relocation + rel->r_addend;
2989 }
2990 else
2991 {
2992 if (h->dynindx == -1)
2993 abort();
2994 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
2995 outrel.r_addend = rel->r_addend;
2996 }
2997
2998 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
2999 continue;
3000 }
3001
3002 relocation = (plt_sec->output_section->vma
3003 + plt_sec->output_offset + h->plt.offset);
3004 goto do_relocation;
3005
3006 case R_SPARC_HI22:
3007 case R_SPARC_LO10:
3008 /* We should only see such relocs in static links. */
3009 if (bfd_link_pic (info))
3010 abort();
3011 relocation = (plt_sec->output_section->vma
3012 + plt_sec->output_offset + h->plt.offset);
3013 goto do_relocation;
3014
3015 default:
3016 if (h->root.root.string)
3017 name = h->root.root.string;
3018 else
3019 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3020 NULL);
3021 _bfd_error_handler
3022 /* xgettext:c-format */
3023 (_("%pB: relocation %s against STT_GNU_IFUNC "
3024 "symbol `%s' isn't handled by %s"), input_bfd,
3025 _bfd_sparc_elf_howto_table[r_type].name,
3026 name, __FUNCTION__);
3027 bfd_set_error (bfd_error_bad_value);
3028 return false;
3029 }
3030 }
3031
3032 skip_ifunc:
3033 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
3034 resolved_to_zero = eh && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
3035
3036 switch (r_type)
3037 {
3038 case R_SPARC_GOTDATA_OP_HIX22:
3039 case R_SPARC_GOTDATA_OP_LOX10:
3040 if (gdop_relative_offset_ok (info, h, relocation))
3041 {
3042 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3043 ? R_SPARC_GOTDATA_HIX22
3044 : R_SPARC_GOTDATA_LOX10);
3045 howto = _bfd_sparc_elf_howto_table + r_type;
3046 }
3047 break;
3048
3049 case R_SPARC_GOTDATA_OP:
3050 if (gdop_relative_offset_ok (info, h, relocation))
3051 {
3052 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3053
3054 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3055 relocation = 0x80000000 | (insn & 0x3e07c01f);
3056 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3057
3058 /* If the symbol is global but not dynamic, an .rela.* slot has
3059 been allocated for it in the GOT so output R_SPARC_NONE here,
3060 if it isn't also subject to another, old-style GOT relocation.
3061 See also the handling of these GOT relocations just below. */
3062 if (h != NULL
3063 && h->dynindx == -1
3064 && !h->forced_local
3065 && h->root.type != bfd_link_hash_undefweak
3066 && !eh->has_old_style_got_reloc
3067 && (h->got.offset & 1) == 0
3068 && bfd_link_pic (info))
3069 {
3070 asection *s = htab->elf.srelgot;
3071 Elf_Internal_Rela outrel;
3072
3073 BFD_ASSERT (s != NULL);
3074
3075 memset (&outrel, 0, sizeof outrel);
3076 sparc_elf_append_rela (output_bfd, s, &outrel);
3077 h->got.offset |= 1;
3078 }
3079 }
3080 continue;
3081 }
3082
3083 switch (r_type)
3084 {
3085 case R_SPARC_GOTDATA_HIX22:
3086 case R_SPARC_GOTDATA_LOX10:
3087 relocation = gdopoff (info, relocation);
3088 break;
3089
3090 case R_SPARC_GOTDATA_OP_HIX22:
3091 case R_SPARC_GOTDATA_OP_LOX10:
3092 case R_SPARC_GOT10:
3093 case R_SPARC_GOT13:
3094 case R_SPARC_GOT22:
3095 /* Relocation is to the entry for this symbol in the global
3096 offset table. */
3097 if (htab->elf.sgot == NULL)
3098 abort ();
3099
3100 relative_reloc = false;
3101 if (h != NULL)
3102 {
3103 bool dyn;
3104
3105 off = h->got.offset;
3106 BFD_ASSERT (off != (bfd_vma) -1);
3107 dyn = elf_hash_table (info)->dynamic_sections_created;
3108
3109 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3110 bfd_link_pic (info),
3111 h)
3112 || (bfd_link_pic (info)
3113 && SYMBOL_REFERENCES_LOCAL (info, h)))
3114 {
3115 /* This is actually a static link, or it is a
3116 -Bsymbolic link and the symbol is defined
3117 locally, or the symbol was forced to be local
3118 because of a version file. We must initialize
3119 this entry in the global offset table. Since the
3120 offset must always be a multiple of 8 for 64-bit
3121 and 4 for 32-bit, we use the least significant bit
3122 to record whether we have initialized it already.
3123
3124 When doing a dynamic link, we create a .rela.got
3125 relocation entry to initialize the value. This
3126 is done in the finish_dynamic_symbol routine. */
3127 if ((off & 1) != 0)
3128 off &= ~1;
3129 else
3130 {
3131 /* If this symbol isn't dynamic in PIC mode, treat it
3132 like a local symbol in PIC mode below. */
3133 if (h->dynindx == -1
3134 && !h->forced_local
3135 && h->root.type != bfd_link_hash_undefweak
3136 && bfd_link_pic (info))
3137 relative_reloc = true;
3138 else
3139 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3140 htab->elf.sgot->contents + off);
3141 h->got.offset |= 1;
3142 }
3143 }
3144 else
3145 unresolved_reloc = false;
3146 }
3147 else
3148 {
3149 BFD_ASSERT (local_got_offsets != NULL
3150 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3151
3152 off = local_got_offsets[r_symndx];
3153
3154 /* The offset must always be a multiple of 8 on 64-bit and
3155 4 on 32-bit. We use the least significant bit to record
3156 whether we have already processed this entry. */
3157 if ((off & 1) != 0)
3158 off &= ~1;
3159 else
3160 {
3161 /* For a local symbol in PIC mode, we need to generate a
3162 R_SPARC_RELATIVE reloc for the dynamic linker. */
3163 if (bfd_link_pic (info))
3164 relative_reloc = true;
3165 else
3166 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3167 htab->elf.sgot->contents + off);
3168 local_got_offsets[r_symndx] |= 1;
3169 }
3170 }
3171
3172 if (relative_reloc)
3173 {
3174 asection *s = htab->elf.srelgot;
3175 Elf_Internal_Rela outrel;
3176
3177 BFD_ASSERT (s != NULL);
3178
3179 outrel.r_offset = (htab->elf.sgot->output_section->vma
3180 + htab->elf.sgot->output_offset
3181 + off);
3182 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3183 0, R_SPARC_RELATIVE);
3184 outrel.r_addend = relocation;
3185 sparc_elf_append_rela (output_bfd, s, &outrel);
3186 /* Versions of glibc ld.so at least up to 2.26 wrongly
3187 add the section contents to the value calculated for
3188 a RELATIVE reloc. Zero the contents to work around
3189 this bug. */
3190 relocation = 0;
3191 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3192 htab->elf.sgot->contents + off);
3193 }
3194
3195 relocation = htab->elf.sgot->output_offset + off - got_base;
3196 break;
3197
3198 case R_SPARC_PLT32:
3199 case R_SPARC_PLT64:
3200 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3201 {
3202 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3203 goto r_sparc_plt32;
3204 }
3205 /* Fall through. */
3206
3207 case R_SPARC_WPLT30:
3208 case R_SPARC_HIPLT22:
3209 case R_SPARC_LOPLT10:
3210 case R_SPARC_PCPLT32:
3211 case R_SPARC_PCPLT22:
3212 case R_SPARC_PCPLT10:
3213 r_sparc_wplt30:
3214 /* Relocation is to the entry for this symbol in the
3215 procedure linkage table. */
3216
3217 if (! ABI_64_P (output_bfd))
3218 {
3219 /* The Solaris native assembler will generate a WPLT30 reloc
3220 for a local symbol if you assemble a call from one
3221 section to another when using -K pic. We treat it as
3222 WDISP30. */
3223 if (h == NULL)
3224 break;
3225 }
3226 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3227 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3228 break;
3229 else
3230 {
3231 BFD_ASSERT (h != NULL);
3232 }
3233
3234 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3235 {
3236 /* We didn't make a PLT entry for this symbol. This
3237 happens when statically linking PIC code, or when
3238 using -Bsymbolic. */
3239 break;
3240 }
3241
3242 relocation = (htab->elf.splt->output_section->vma
3243 + htab->elf.splt->output_offset
3244 + h->plt.offset);
3245 unresolved_reloc = false;
3246 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3247 {
3248 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3249 is_plt = true;
3250 goto r_sparc_plt32;
3251 }
3252 break;
3253
3254 case R_SPARC_PC10:
3255 case R_SPARC_PC22:
3256 case R_SPARC_PC_HH22:
3257 case R_SPARC_PC_HM10:
3258 case R_SPARC_PC_LM22:
3259 if (h != NULL
3260 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3261 break;
3262 /* Fall through. */
3263 case R_SPARC_DISP8:
3264 case R_SPARC_DISP16:
3265 case R_SPARC_DISP32:
3266 case R_SPARC_DISP64:
3267 case R_SPARC_WDISP30:
3268 case R_SPARC_WDISP22:
3269 case R_SPARC_WDISP19:
3270 case R_SPARC_WDISP16:
3271 case R_SPARC_WDISP10:
3272 case R_SPARC_8:
3273 case R_SPARC_16:
3274 case R_SPARC_32:
3275 case R_SPARC_HI22:
3276 case R_SPARC_22:
3277 case R_SPARC_13:
3278 case R_SPARC_LO10:
3279 case R_SPARC_UA16:
3280 case R_SPARC_UA32:
3281 case R_SPARC_10:
3282 case R_SPARC_11:
3283 case R_SPARC_64:
3284 case R_SPARC_OLO10:
3285 case R_SPARC_HH22:
3286 case R_SPARC_HM10:
3287 case R_SPARC_LM22:
3288 case R_SPARC_7:
3289 case R_SPARC_5:
3290 case R_SPARC_6:
3291 case R_SPARC_HIX22:
3292 case R_SPARC_LOX10:
3293 case R_SPARC_H44:
3294 case R_SPARC_M44:
3295 case R_SPARC_L44:
3296 case R_SPARC_H34:
3297 case R_SPARC_UA64:
3298 r_sparc_plt32:
3299 if ((input_section->flags & SEC_ALLOC) == 0 || is_vxworks_tls)
3300 break;
3301
3302 /* Copy dynamic function pointer relocations. Don't generate
3303 dynamic relocations against resolved undefined weak symbols
3304 in PIE. */
3305 if ((bfd_link_pic (info)
3306 && (h == NULL
3307 || !(h->root.type == bfd_link_hash_undefweak
3308 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3309 || resolved_to_zero)))
3310 && (! howto->pc_relative
3311 || !SYMBOL_CALLS_LOCAL (info, h)))
3312 || (!bfd_link_pic (info)
3313 && h != NULL
3314 && h->dynindx != -1
3315 && !h->non_got_ref
3316 && ((h->def_dynamic
3317 && !h->def_regular)
3318 || (h->root.type == bfd_link_hash_undefweak
3319 && !resolved_to_zero)
3320 || h->root.type == bfd_link_hash_undefined)))
3321 {
3322 Elf_Internal_Rela outrel;
3323 bool skip, relocate = false;
3324
3325 /* When generating a shared object, these relocations
3326 are copied into the output file to be resolved at run
3327 time. */
3328
3329 BFD_ASSERT (sreloc != NULL);
3330
3331 skip = false;
3332
3333 outrel.r_offset =
3334 _bfd_elf_section_offset (output_bfd, info, input_section,
3335 rel->r_offset);
3336 if (outrel.r_offset == (bfd_vma) -1)
3337 skip = true;
3338 else if (outrel.r_offset == (bfd_vma) -2)
3339 skip = true, relocate = true;
3340 outrel.r_offset += (input_section->output_section->vma
3341 + input_section->output_offset);
3342
3343 /* Optimize unaligned reloc usage now that we know where
3344 it finally resides. */
3345 switch (r_type)
3346 {
3347 case R_SPARC_16:
3348 if (outrel.r_offset & 1)
3349 r_type = R_SPARC_UA16;
3350 break;
3351 case R_SPARC_UA16:
3352 if (!(outrel.r_offset & 1))
3353 r_type = R_SPARC_16;
3354 break;
3355 case R_SPARC_32:
3356 if (outrel.r_offset & 3)
3357 r_type = R_SPARC_UA32;
3358 break;
3359 case R_SPARC_UA32:
3360 if (!(outrel.r_offset & 3))
3361 r_type = R_SPARC_32;
3362 break;
3363 case R_SPARC_64:
3364 if (outrel.r_offset & 7)
3365 r_type = R_SPARC_UA64;
3366 break;
3367 case R_SPARC_UA64:
3368 if (!(outrel.r_offset & 7))
3369 r_type = R_SPARC_64;
3370 break;
3371 case R_SPARC_DISP8:
3372 case R_SPARC_DISP16:
3373 case R_SPARC_DISP32:
3374 case R_SPARC_DISP64:
3375 /* If the symbol is not dynamic, we should not keep
3376 a dynamic relocation. But an .rela.* slot has been
3377 allocated for it, output R_SPARC_NONE.
3378 FIXME: Add code tracking needed dynamic relocs as
3379 e.g. i386 has. */
3380 if (h->dynindx == -1)
3381 skip = true, relocate = true;
3382 break;
3383 }
3384
3385 if (skip)
3386 memset (&outrel, 0, sizeof outrel);
3387 /* h->dynindx may be -1 if the symbol was marked to
3388 become local. */
3389 else if (h != NULL
3390 && h->dynindx != -1
3391 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3392 || !bfd_link_pic (info)
3393 || !SYMBOLIC_BIND (info, h)
3394 || !h->def_regular))
3395 {
3396 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3397 outrel.r_addend = rel->r_addend;
3398 }
3399 else
3400 {
3401 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3402 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3403 {
3404 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3405 0, R_SPARC_RELATIVE);
3406 outrel.r_addend = relocation + rel->r_addend;
3407 }
3408 else
3409 {
3410 long indx;
3411
3412 outrel.r_addend = relocation + rel->r_addend;
3413
3414 if (is_plt)
3415 sec = htab->elf.splt;
3416
3417 if (bfd_is_abs_section (sec))
3418 indx = 0;
3419 else if (sec == NULL || sec->owner == NULL)
3420 {
3421 bfd_set_error (bfd_error_bad_value);
3422 return false;
3423 }
3424 else
3425 {
3426 asection *osec;
3427
3428 /* We are turning this relocation into one
3429 against a section symbol. It would be
3430 proper to subtract the symbol's value,
3431 osec->vma, from the emitted reloc addend,
3432 but ld.so expects buggy relocs. */
3433 osec = sec->output_section;
3434 indx = elf_section_data (osec)->dynindx;
3435
3436 if (indx == 0)
3437 {
3438 osec = htab->elf.text_index_section;
3439 indx = elf_section_data (osec)->dynindx;
3440 }
3441
3442 /* FIXME: we really should be able to link non-pic
3443 shared libraries. */
3444 if (indx == 0)
3445 {
3446 BFD_FAIL ();
3447 _bfd_error_handler
3448 (_("%pB: probably compiled without -fPIC?"),
3449 input_bfd);
3450 bfd_set_error (bfd_error_bad_value);
3451 return false;
3452 }
3453 if (bed->elf_osabi == ELFOSABI_FREEBSD)
3454 outrel.r_addend -= osec->vma;
3455 }
3456
3457 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3458 r_type);
3459 }
3460 }
3461
3462 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3463
3464 /* This reloc will be computed at runtime, so there's no
3465 need to do anything now. */
3466 if (! relocate)
3467 continue;
3468 }
3469 break;
3470
3471 case R_SPARC_TLS_GD_HI22:
3472 case R_SPARC_TLS_GD_LO10:
3473 case R_SPARC_TLS_IE_HI22:
3474 case R_SPARC_TLS_IE_LO10:
3475 r_type = sparc_elf_tls_transition (info, input_bfd, r_type,
3476 h == NULL || h->dynindx == -1);
3477 if (r_type == R_SPARC_REV32)
3478 break;
3479 if (h != NULL)
3480 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3481 else if (local_got_offsets)
3482 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3483 else
3484 tls_type = GOT_UNKNOWN;
3485 if (tls_type == GOT_TLS_IE)
3486 switch (r_type)
3487 {
3488 case R_SPARC_TLS_GD_HI22:
3489 r_type = R_SPARC_TLS_IE_HI22;
3490 break;
3491 case R_SPARC_TLS_GD_LO10:
3492 r_type = R_SPARC_TLS_IE_LO10;
3493 break;
3494 }
3495
3496 if (r_type == R_SPARC_TLS_LE_HIX22)
3497 {
3498 relocation = tpoff (info, relocation);
3499 break;
3500 }
3501 if (r_type == R_SPARC_TLS_LE_LOX10)
3502 {
3503 /* Change add into xor. */
3504 relocation = tpoff (info, relocation);
3505 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3506 contents + rel->r_offset)
3507 | 0x80182000), contents + rel->r_offset);
3508 break;
3509 }
3510
3511 if (h != NULL)
3512 {
3513 off = h->got.offset;
3514 h->got.offset |= 1;
3515 }
3516 else
3517 {
3518 BFD_ASSERT (local_got_offsets != NULL);
3519 off = local_got_offsets[r_symndx];
3520 local_got_offsets[r_symndx] |= 1;
3521 }
3522
3523 r_sparc_tlsldm:
3524 if (htab->elf.sgot == NULL)
3525 abort ();
3526
3527 if ((off & 1) != 0)
3528 off &= ~1;
3529 else
3530 {
3531 Elf_Internal_Rela outrel;
3532 int dr_type, indx;
3533
3534 if (htab->elf.srelgot == NULL)
3535 abort ();
3536
3537 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3538 htab->elf.sgot->contents + off);
3539 outrel.r_offset = (htab->elf.sgot->output_section->vma
3540 + htab->elf.sgot->output_offset + off);
3541 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3542 if (r_type == R_SPARC_TLS_IE_HI22
3543 || r_type == R_SPARC_TLS_IE_LO10)
3544 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3545 else
3546 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3547 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3548 outrel.r_addend = relocation - dtpoff_base (info);
3549 else
3550 outrel.r_addend = 0;
3551 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3552 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3553
3554 if (r_type == R_SPARC_TLS_GD_HI22
3555 || r_type == R_SPARC_TLS_GD_LO10)
3556 {
3557 if (indx == 0)
3558 {
3559 BFD_ASSERT (! unresolved_reloc);
3560 SPARC_ELF_PUT_WORD (htab, output_bfd,
3561 relocation - dtpoff_base (info),
3562 (htab->elf.sgot->contents + off
3563 + SPARC_ELF_WORD_BYTES (htab)));
3564 }
3565 else
3566 {
3567 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3568 (htab->elf.sgot->contents + off
3569 + SPARC_ELF_WORD_BYTES (htab)));
3570 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3571 SPARC_ELF_DTPOFF_RELOC (htab));
3572 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3573 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3574 &outrel);
3575 }
3576 }
3577 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3578 {
3579 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3580 (htab->elf.sgot->contents + off
3581 + SPARC_ELF_WORD_BYTES (htab)));
3582 }
3583 }
3584
3585 if (off >= (bfd_vma) -2)
3586 abort ();
3587
3588 relocation = htab->elf.sgot->output_offset + off - got_base;
3589 unresolved_reloc = false;
3590 howto = _bfd_sparc_elf_howto_table + r_type;
3591 break;
3592
3593 case R_SPARC_TLS_LDM_HI22:
3594 case R_SPARC_TLS_LDM_LO10:
3595 /* LD -> LE */
3596 if (bfd_link_executable (info))
3597 {
3598 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3599 continue;
3600 }
3601 off = htab->tls_ldm_got.offset;
3602 htab->tls_ldm_got.offset |= 1;
3603 goto r_sparc_tlsldm;
3604
3605 case R_SPARC_TLS_LDO_HIX22:
3606 case R_SPARC_TLS_LDO_LOX10:
3607 /* LD -> LE */
3608 if (bfd_link_executable (info))
3609 {
3610 if (r_type == R_SPARC_TLS_LDO_HIX22)
3611 r_type = R_SPARC_TLS_LE_HIX22;
3612 else
3613 r_type = R_SPARC_TLS_LE_LOX10;
3614 }
3615 else
3616 {
3617 relocation -= dtpoff_base (info);
3618 break;
3619 }
3620 /* Fall through. */
3621
3622 case R_SPARC_TLS_LE_HIX22:
3623 case R_SPARC_TLS_LE_LOX10:
3624 if (!bfd_link_executable (info))
3625 {
3626 Elf_Internal_Rela outrel;
3627 bfd_vma offset
3628 = _bfd_elf_section_offset (output_bfd, info, input_section,
3629 rel->r_offset);
3630 if (offset == (bfd_vma) -1 || offset == (bfd_vma) -2)
3631 memset (&outrel, 0, sizeof outrel);
3632 else
3633 {
3634 outrel.r_offset = offset
3635 + input_section->output_section->vma
3636 + input_section->output_offset;
3637 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3638 outrel.r_addend
3639 = relocation - dtpoff_base (info) + rel->r_addend;
3640 }
3641
3642 BFD_ASSERT (sreloc != NULL);
3643 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3644 continue;
3645 }
3646 relocation = tpoff (info, relocation);
3647 break;
3648
3649 case R_SPARC_TLS_LDM_CALL:
3650 /* LD -> LE */
3651 if (bfd_link_executable (info))
3652 {
3653 /* mov %g0, %o0 */
3654 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3655 continue;
3656 }
3657 /* Fall through */
3658
3659 case R_SPARC_TLS_GD_CALL:
3660 if (h != NULL)
3661 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3662 else if (local_got_offsets)
3663 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3664 else
3665 tls_type = GOT_UNKNOWN;
3666 /* GD -> IE or LE */
3667 if (bfd_link_executable (info)
3668 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3669 {
3670 Elf_Internal_Rela *rel2;
3671 bfd_vma insn;
3672
3673 /* GD -> LE */
3674 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3675 {
3676 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3677 continue;
3678 }
3679
3680 /* GD -> IE */
3681 if (rel + 1 < relend
3682 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3683 && rel[1].r_offset == rel->r_offset + 4
3684 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3685 && (((insn = bfd_get_32 (input_bfd,
3686 contents + rel[1].r_offset))
3687 >> 25) & 0x1f) == 8)
3688 {
3689 /* We have
3690 call __tls_get_addr, %tgd_call(foo)
3691 add %reg1, %reg2, %o0, %tgd_add(foo)
3692 and change it into IE:
3693 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3694 add %g7, %o0, %o0, %tie_add(foo).
3695 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3696 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3697 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3698 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3699 contents + rel->r_offset);
3700 bfd_put_32 (output_bfd, 0x9001c008,
3701 contents + rel->r_offset + 4);
3702 rel++;
3703 continue;
3704 }
3705
3706 /* We cannot just overwrite the delay slot instruction,
3707 as it might be what puts the %o0 argument to
3708 __tls_get_addr into place. So we have to transpose
3709 the delay slot with the add we patch in. */
3710 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3711 bfd_put_32 (output_bfd, insn,
3712 contents + rel->r_offset);
3713 bfd_put_32 (output_bfd, 0x9001c008,
3714 contents + rel->r_offset + 4);
3715
3716 rel2 = rel;
3717 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3718 rel->r_offset + 4))
3719 != NULL)
3720 {
3721 /* If the instruction we moved has a relocation attached to
3722 it, adjust the offset so that it will apply to the correct
3723 instruction. */
3724 rel2->r_offset -= 4;
3725 }
3726 continue;
3727 }
3728
3729 h = (struct elf_link_hash_entry *)
3730 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
3731 false, true);
3732 BFD_ASSERT (h != NULL);
3733 r_type = R_SPARC_WPLT30;
3734 howto = _bfd_sparc_elf_howto_table + r_type;
3735 goto r_sparc_wplt30;
3736
3737 case R_SPARC_TLS_GD_ADD:
3738 if (h != NULL)
3739 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3740 else if (local_got_offsets)
3741 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3742 else
3743 tls_type = GOT_UNKNOWN;
3744 /* GD -> IE or LE */
3745 if (bfd_link_executable (info) || tls_type == GOT_TLS_IE)
3746 {
3747 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3748 changed into IE:
3749 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3750 or LE:
3751 add %g7, %reg2, %reg3. */
3752 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3753 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3754 relocation = (insn & ~0x7c000) | 0x1c000;
3755 else
3756 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3757 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3758 }
3759 continue;
3760
3761 case R_SPARC_TLS_LDM_ADD:
3762 /* LD -> LE */
3763 if (bfd_link_executable (info))
3764 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3765 continue;
3766
3767 case R_SPARC_TLS_LDO_ADD:
3768 /* LD -> LE */
3769 if (bfd_link_executable (info))
3770 {
3771 /* Change rs1 into %g7. */
3772 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3773 insn = (insn & ~0x7c000) | 0x1c000;
3774 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3775 }
3776 continue;
3777
3778 case R_SPARC_TLS_IE_LD:
3779 case R_SPARC_TLS_IE_LDX:
3780 /* IE -> LE */
3781 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3782 {
3783 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3784 int rs2 = insn & 0x1f;
3785 int rd = (insn >> 25) & 0x1f;
3786
3787 if (rs2 == rd)
3788 relocation = SPARC_NOP;
3789 else
3790 relocation = 0x80100000 | (insn & 0x3e00001f);
3791 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3792 }
3793 continue;
3794
3795 case R_SPARC_TLS_IE_ADD:
3796 /* Totally useless relocation. */
3797 continue;
3798
3799 case R_SPARC_TLS_DTPOFF32:
3800 case R_SPARC_TLS_DTPOFF64:
3801 relocation -= dtpoff_base (info);
3802 break;
3803
3804 default:
3805 break;
3806 }
3807
3808 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3809 because such sections are not SEC_ALLOC and thus ld.so will
3810 not process them. */
3811 if (unresolved_reloc
3812 && !((input_section->flags & SEC_DEBUGGING) != 0
3813 && h->def_dynamic)
3814 && _bfd_elf_section_offset (output_bfd, info, input_section,
3815 rel->r_offset) != (bfd_vma) -1)
3816 _bfd_error_handler
3817 /* xgettext:c-format */
3818 (_("%pB(%pA+%#" PRIx64 "): "
3819 "unresolvable %s relocation against symbol `%s'"),
3820 input_bfd,
3821 input_section,
3822 (uint64_t) rel->r_offset,
3823 howto->name,
3824 h->root.root.string);
3825
3826 r = bfd_reloc_continue;
3827 if (r_type == R_SPARC_OLO10)
3828 {
3829 bfd_vma x;
3830
3831 if (! ABI_64_P (output_bfd))
3832 abort ();
3833
3834 relocation += rel->r_addend;
3835 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3836
3837 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3838 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3839 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3840
3841 r = bfd_check_overflow (howto->complain_on_overflow,
3842 howto->bitsize, howto->rightshift,
3843 bfd_arch_bits_per_address (input_bfd),
3844 relocation);
3845 }
3846 else if (r_type == R_SPARC_WDISP16)
3847 {
3848 bfd_vma x;
3849
3850 relocation += rel->r_addend;
3851 relocation -= (input_section->output_section->vma
3852 + input_section->output_offset);
3853 relocation -= rel->r_offset;
3854
3855 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3856 x |= ((((relocation >> 2) & 0xc000) << 6)
3857 | ((relocation >> 2) & 0x3fff));
3858 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3859
3860 r = bfd_check_overflow (howto->complain_on_overflow,
3861 howto->bitsize, howto->rightshift,
3862 bfd_arch_bits_per_address (input_bfd),
3863 relocation);
3864 }
3865 else if (r_type == R_SPARC_WDISP10)
3866 {
3867 bfd_vma x;
3868
3869 relocation += rel->r_addend;
3870 relocation -= (input_section->output_section->vma
3871 + input_section->output_offset);
3872 relocation -= rel->r_offset;
3873
3874 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3875 x |= ((((relocation >> 2) & 0x300) << 11)
3876 | (((relocation >> 2) & 0xff) << 5));
3877 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3878
3879 r = bfd_check_overflow (howto->complain_on_overflow,
3880 howto->bitsize, howto->rightshift,
3881 bfd_arch_bits_per_address (input_bfd),
3882 relocation);
3883 }
3884 else if (r_type == R_SPARC_REV32)
3885 {
3886 bfd_vma x;
3887
3888 relocation = relocation + rel->r_addend;
3889
3890 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3891 x = x + relocation;
3892 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3893 r = bfd_reloc_ok;
3894 }
3895 else if (r_type == R_SPARC_TLS_LDO_HIX22
3896 || r_type == R_SPARC_TLS_LE_HIX22)
3897 {
3898 bfd_vma x;
3899
3900 relocation += rel->r_addend;
3901 if (r_type == R_SPARC_TLS_LE_HIX22)
3902 relocation ^= MINUS_ONE;
3903
3904 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3905 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3906 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3907 r = bfd_reloc_ok;
3908 }
3909 else if (r_type == R_SPARC_TLS_LDO_LOX10
3910 || r_type == R_SPARC_TLS_LE_LOX10)
3911 {
3912 bfd_vma x;
3913
3914 relocation += rel->r_addend;
3915 relocation &= 0x3ff;
3916 if (r_type == R_SPARC_TLS_LE_LOX10)
3917 relocation |= 0x1c00;
3918
3919 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3920 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3921 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3922
3923 r = bfd_reloc_ok;
3924 }
3925 else if (r_type == R_SPARC_HIX22
3926 || r_type == R_SPARC_GOTDATA_HIX22
3927 || r_type == R_SPARC_GOTDATA_OP_HIX22)
3928 {
3929 bfd_vma x;
3930
3931 relocation += rel->r_addend;
3932 if (r_type == R_SPARC_HIX22
3933 || (bfd_signed_vma) relocation < 0)
3934 relocation = relocation ^ MINUS_ONE;
3935
3936 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3937 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3938 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3939
3940 r = bfd_check_overflow (howto->complain_on_overflow,
3941 howto->bitsize, howto->rightshift,
3942 bfd_arch_bits_per_address (input_bfd),
3943 relocation);
3944 }
3945 else if (r_type == R_SPARC_LOX10
3946 || r_type == R_SPARC_GOTDATA_LOX10
3947 || r_type == R_SPARC_GOTDATA_OP_LOX10)
3948 {
3949 bfd_vma x;
3950
3951 relocation += rel->r_addend;
3952 if (r_type == R_SPARC_LOX10
3953 || (bfd_signed_vma) relocation < 0)
3954 relocation = (relocation & 0x3ff) | 0x1c00;
3955 else
3956 relocation = (relocation & 0x3ff);
3957
3958 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3959 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3960 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3961
3962 r = bfd_reloc_ok;
3963 }
3964 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
3965 && sec_do_relax (input_section)
3966 && rel->r_offset + 4 < input_section->size)
3967 {
3968 #define G0 0
3969 #define O7 15
3970 #define XCC (2 << 20)
3971 #define COND(x) (((x)&0xf)<<25)
3972 #define CONDA COND(0x8)
3973 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
3974 #define INSN_BA (F2(0,2) | CONDA)
3975 #define INSN_OR F3(2, 0x2, 0)
3976 #define INSN_NOP F2(0,4)
3977
3978 bfd_vma x, y;
3979
3980 /* If the instruction is a call with either:
3981 restore
3982 arithmetic instruction with rd == %o7
3983 where rs1 != %o7 and rs2 if it is register != %o7
3984 then we can optimize if the call destination is near
3985 by changing the call into a branch always. */
3986 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3987 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3988 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
3989 {
3990 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
3991 || ((y & OP3(0x28)) == 0 /* arithmetic */
3992 && (y & RD(~0)) == RD(O7)))
3993 && (y & RS1(~0)) != RS1(O7)
3994 && ((y & F3I(~0))
3995 || (y & RS2(~0)) != RS2(O7)))
3996 {
3997 bfd_vma reloc;
3998
3999 reloc = relocation + rel->r_addend - rel->r_offset;
4000 reloc -= (input_section->output_section->vma
4001 + input_section->output_offset);
4002
4003 /* Ensure the branch fits into simm22. */
4004 if ((reloc & 3) == 0
4005 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4006 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4007 {
4008 reloc >>= 2;
4009
4010 /* Check whether it fits into simm19. */
4011 if (((reloc & 0x3c0000) == 0
4012 || (reloc & 0x3c0000) == 0x3c0000)
4013 && (ABI_64_P (output_bfd)
4014 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4015 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4016 else
4017 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4018 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4019 r = bfd_reloc_ok;
4020 if (rel->r_offset >= 4
4021 && (y & (0xffffffff ^ RS1(~0)))
4022 == (INSN_OR | RD(O7) | RS2(G0)))
4023 {
4024 bfd_vma z;
4025 unsigned int reg;
4026
4027 z = bfd_get_32 (input_bfd,
4028 contents + rel->r_offset - 4);
4029 if ((z & (0xffffffff ^ RD(~0)))
4030 != (INSN_OR | RS1(O7) | RS2(G0)))
4031 continue;
4032
4033 /* The sequence was
4034 or %o7, %g0, %rN
4035 call foo
4036 or %rN, %g0, %o7
4037
4038 If call foo was replaced with ba, replace
4039 or %rN, %g0, %o7 with nop. */
4040
4041 reg = (y & RS1(~0)) >> 14;
4042 if (reg != ((z & RD(~0)) >> 25)
4043 || reg == G0 || reg == O7)
4044 continue;
4045
4046 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4047 contents + rel->r_offset + 4);
4048 }
4049
4050 }
4051 }
4052 }
4053 }
4054
4055 if (r == bfd_reloc_continue)
4056 {
4057 do_relocation:
4058 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4059 contents, rel->r_offset,
4060 relocation, rel->r_addend);
4061 }
4062 if (r != bfd_reloc_ok)
4063 {
4064 switch (r)
4065 {
4066 default:
4067 case bfd_reloc_outofrange:
4068 abort ();
4069 case bfd_reloc_overflow:
4070 {
4071 const char *name;
4072
4073 /* The Solaris native linker silently disregards overflows.
4074 We don't, but this breaks stabs debugging info, whose
4075 relocations are only 32-bits wide. Ignore overflows in
4076 this case and also for discarded entries. */
4077 if ((r_type == R_SPARC_32
4078 || r_type == R_SPARC_UA32
4079 || r_type == R_SPARC_DISP32)
4080 && (((input_section->flags & SEC_DEBUGGING) != 0
4081 && strcmp (bfd_section_name (input_section),
4082 ".stab") == 0)
4083 || _bfd_elf_section_offset (output_bfd, info,
4084 input_section,
4085 rel->r_offset)
4086 == (bfd_vma)-1))
4087 break;
4088
4089 if (h != NULL)
4090 {
4091 /* Assume this is a call protected by other code that
4092 detect the symbol is undefined. If this is the case,
4093 we can safely ignore the overflow. If not, the
4094 program is hosed anyway, and a little warning isn't
4095 going to help. */
4096 if (h->root.type == bfd_link_hash_undefweak
4097 && howto->pc_relative)
4098 break;
4099
4100 name = NULL;
4101 }
4102 else
4103 {
4104 name = bfd_elf_string_from_elf_section (input_bfd,
4105 symtab_hdr->sh_link,
4106 sym->st_name);
4107 if (name == NULL)
4108 return false;
4109 if (*name == '\0')
4110 name = bfd_section_name (sec);
4111 }
4112 (*info->callbacks->reloc_overflow)
4113 (info, (h ? &h->root : NULL), name, howto->name,
4114 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4115 }
4116 break;
4117 }
4118 }
4119 }
4120
4121 return true;
4122 }
4123
4124 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4125 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4126 is the offset of the associated .got.plt entry from
4127 _GLOBAL_OFFSET_TABLE_. */
4128
4129 static void
sparc_vxworks_build_plt_entry(bfd * output_bfd,struct bfd_link_info * info,bfd_vma plt_offset,bfd_vma plt_index,bfd_vma got_offset)4130 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4131 bfd_vma plt_offset, bfd_vma plt_index,
4132 bfd_vma got_offset)
4133 {
4134 bfd_vma got_base;
4135 const bfd_vma *plt_entry;
4136 struct _bfd_sparc_elf_link_hash_table *htab;
4137 bfd_byte *loc;
4138 Elf_Internal_Rela rela;
4139
4140 htab = _bfd_sparc_elf_hash_table (info);
4141 BFD_ASSERT (htab != NULL);
4142
4143 if (bfd_link_pic (info))
4144 {
4145 plt_entry = sparc_vxworks_shared_plt_entry;
4146 got_base = 0;
4147 }
4148 else
4149 {
4150 plt_entry = sparc_vxworks_exec_plt_entry;
4151 got_base = (htab->elf.hgot->root.u.def.value
4152 + htab->elf.hgot->root.u.def.section->output_offset
4153 + htab->elf.hgot->root.u.def.section->output_section->vma);
4154 }
4155
4156 /* Fill in the entry in the procedure linkage table. */
4157 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4158 htab->elf.splt->contents + plt_offset);
4159 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4160 htab->elf.splt->contents + plt_offset + 4);
4161 bfd_put_32 (output_bfd, plt_entry[2],
4162 htab->elf.splt->contents + plt_offset + 8);
4163 bfd_put_32 (output_bfd, plt_entry[3],
4164 htab->elf.splt->contents + plt_offset + 12);
4165 bfd_put_32 (output_bfd, plt_entry[4],
4166 htab->elf.splt->contents + plt_offset + 16);
4167 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4168 htab->elf.splt->contents + plt_offset + 20);
4169 /* PC-relative displacement for a branch to the start of
4170 the PLT section. */
4171 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4172 & 0x003fffff),
4173 htab->elf.splt->contents + plt_offset + 24);
4174 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4175 htab->elf.splt->contents + plt_offset + 28);
4176
4177 /* Fill in the .got.plt entry, pointing initially at the
4178 second half of the PLT entry. */
4179 BFD_ASSERT (htab->elf.sgotplt != NULL);
4180 bfd_put_32 (output_bfd,
4181 htab->elf.splt->output_section->vma
4182 + htab->elf.splt->output_offset
4183 + plt_offset + 20,
4184 htab->elf.sgotplt->contents + got_offset);
4185
4186 /* Add relocations to .rela.plt.unloaded. */
4187 if (!bfd_link_pic (info))
4188 {
4189 loc = (htab->srelplt2->contents
4190 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4191
4192 /* Relocate the initial sethi. */
4193 rela.r_offset = (htab->elf.splt->output_section->vma
4194 + htab->elf.splt->output_offset
4195 + plt_offset);
4196 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4197 rela.r_addend = got_offset;
4198 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4199 loc += sizeof (Elf32_External_Rela);
4200
4201 /* Likewise the following or. */
4202 rela.r_offset += 4;
4203 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4204 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4205 loc += sizeof (Elf32_External_Rela);
4206
4207 /* Relocate the .got.plt entry. */
4208 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4209 + htab->elf.sgotplt->output_offset
4210 + got_offset);
4211 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4212 rela.r_addend = plt_offset + 20;
4213 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4214 }
4215 }
4216
4217 /* Finish up dynamic symbol handling. We set the contents of various
4218 dynamic sections here. */
4219
4220 bool
_bfd_sparc_elf_finish_dynamic_symbol(bfd * output_bfd,struct bfd_link_info * info,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)4221 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4222 struct bfd_link_info *info,
4223 struct elf_link_hash_entry *h,
4224 Elf_Internal_Sym *sym)
4225 {
4226 struct _bfd_sparc_elf_link_hash_table *htab;
4227 const struct elf_backend_data *bed;
4228 struct _bfd_sparc_elf_link_hash_entry *eh;
4229 bool resolved_to_zero;
4230
4231 htab = _bfd_sparc_elf_hash_table (info);
4232 BFD_ASSERT (htab != NULL);
4233 bed = get_elf_backend_data (output_bfd);
4234
4235 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
4236
4237 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
4238 resolved undefined weak symbols in executable so that their
4239 references have value 0 at run-time. */
4240 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
4241
4242 if (h->plt.offset != (bfd_vma) -1)
4243 {
4244 asection *splt;
4245 asection *srela;
4246 Elf_Internal_Rela rela;
4247 bfd_byte *loc;
4248 bfd_vma r_offset, got_offset;
4249 int rela_index;
4250
4251 /* When building a static executable, use .iplt and
4252 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4253 if (htab->elf.splt != NULL)
4254 {
4255 splt = htab->elf.splt;
4256 srela = htab->elf.srelplt;
4257 }
4258 else
4259 {
4260 splt = htab->elf.iplt;
4261 srela = htab->elf.irelplt;
4262 }
4263
4264 if (splt == NULL || srela == NULL)
4265 abort ();
4266
4267 /* Fill in the entry in the .rela.plt section. */
4268 if (htab->elf.target_os == is_vxworks)
4269 {
4270 /* Work out the index of this PLT entry. */
4271 rela_index = ((h->plt.offset - htab->plt_header_size)
4272 / htab->plt_entry_size);
4273
4274 /* Calculate the offset of the associated .got.plt entry.
4275 The first three entries are reserved. */
4276 got_offset = (rela_index + 3) * 4;
4277
4278 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4279 rela_index, got_offset);
4280
4281
4282 /* On VxWorks, the relocation points to the .got.plt entry,
4283 not the .plt entry. */
4284 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4285 + htab->elf.sgotplt->output_offset
4286 + got_offset);
4287 rela.r_addend = 0;
4288 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4289 R_SPARC_JMP_SLOT);
4290 }
4291 else
4292 {
4293 bool ifunc = false;
4294
4295 /* Fill in the entry in the procedure linkage table. */
4296 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4297 h->plt.offset, splt->size,
4298 &r_offset);
4299
4300 if (h == NULL
4301 || h->dynindx == -1
4302 || ((bfd_link_executable (info)
4303 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4304 && h->def_regular
4305 && h->type == STT_GNU_IFUNC))
4306 {
4307 ifunc = true;
4308 BFD_ASSERT (h == NULL
4309 || (h->type == STT_GNU_IFUNC
4310 && h->def_regular
4311 && (h->root.type == bfd_link_hash_defined
4312 || h->root.type == bfd_link_hash_defweak)));
4313 }
4314
4315 rela.r_offset = r_offset
4316 + (splt->output_section->vma + splt->output_offset);
4317 if (ABI_64_P (output_bfd)
4318 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4319 {
4320 if (ifunc)
4321 {
4322 rela.r_addend = (h->root.u.def.section->output_section->vma
4323 + h->root.u.def.section->output_offset
4324 + h->root.u.def.value);
4325 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4326 R_SPARC_IRELATIVE);
4327 }
4328 else
4329 {
4330 rela.r_addend = (-(h->plt.offset + 4)
4331 - splt->output_section->vma
4332 - splt->output_offset);
4333 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4334 R_SPARC_JMP_SLOT);
4335 }
4336 }
4337 else
4338 {
4339 if (ifunc)
4340 {
4341 rela.r_addend = (h->root.u.def.section->output_section->vma
4342 + h->root.u.def.section->output_offset
4343 + h->root.u.def.value);
4344 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4345 R_SPARC_JMP_IREL);
4346 }
4347 else
4348 {
4349 rela.r_addend = 0;
4350 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4351 R_SPARC_JMP_SLOT);
4352 }
4353 }
4354 }
4355
4356 /* Adjust for the first 4 reserved elements in the .plt section
4357 when setting the offset in the .rela.plt section.
4358 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4359 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4360
4361 loc = srela->contents;
4362 loc += rela_index * bed->s->sizeof_rela;
4363 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4364
4365 if (!resolved_to_zero && !h->def_regular)
4366 {
4367 /* Mark the symbol as undefined, rather than as defined in
4368 the .plt section. Leave the value alone. */
4369 sym->st_shndx = SHN_UNDEF;
4370 /* If the symbol is weak, we do need to clear the value.
4371 Otherwise, the PLT entry would provide a definition for
4372 the symbol even if the symbol wasn't defined anywhere,
4373 and so the symbol would never be NULL. */
4374 if (!h->ref_regular_nonweak)
4375 sym->st_value = 0;
4376 }
4377 }
4378
4379 /* Don't generate dynamic GOT relocation against resolved undefined weak
4380 symbols in an executable. */
4381 if (h->got.offset != (bfd_vma) -1
4382 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4383 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE
4384 && !(h->root.type == bfd_link_hash_undefweak
4385 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4386 || resolved_to_zero)))
4387 {
4388 asection *sgot;
4389 asection *srela;
4390 Elf_Internal_Rela rela;
4391
4392 /* This symbol has an entry in the GOT. Set it up. */
4393
4394 sgot = htab->elf.sgot;
4395 srela = htab->elf.srelgot;
4396 BFD_ASSERT (sgot != NULL && srela != NULL);
4397
4398 rela.r_offset = (sgot->output_section->vma
4399 + sgot->output_offset
4400 + (h->got.offset &~ (bfd_vma) 1));
4401
4402 /* If this is a -Bsymbolic link, and the symbol is defined
4403 locally, we just want to emit a RELATIVE reloc. Likewise if
4404 the symbol was forced to be local because of a version file.
4405 The entry in the global offset table will already have been
4406 initialized in the relocate_section function. */
4407 if (! bfd_link_pic (info)
4408 && h->type == STT_GNU_IFUNC
4409 && h->def_regular)
4410 {
4411 asection *plt;
4412
4413 /* We load the GOT entry with the PLT entry. */
4414 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4415 SPARC_ELF_PUT_WORD (htab, output_bfd,
4416 (plt->output_section->vma
4417 + plt->output_offset + h->plt.offset),
4418 htab->elf.sgot->contents
4419 + (h->got.offset & ~(bfd_vma) 1));
4420 return true;
4421 }
4422
4423 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
4424 {
4425 asection *sec = h->root.u.def.section;
4426 if (h->type == STT_GNU_IFUNC)
4427 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4428 else
4429 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4430 rela.r_addend = (h->root.u.def.value
4431 + sec->output_section->vma
4432 + sec->output_offset);
4433 }
4434 else
4435 {
4436 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4437 rela.r_addend = 0;
4438 }
4439
4440 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4441 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4442 sparc_elf_append_rela (output_bfd, srela, &rela);
4443 }
4444
4445 if (h->needs_copy)
4446 {
4447 asection *s;
4448 Elf_Internal_Rela rela;
4449
4450 /* This symbols needs a copy reloc. Set it up. */
4451 BFD_ASSERT (h->dynindx != -1);
4452
4453 rela.r_offset = (h->root.u.def.value
4454 + h->root.u.def.section->output_section->vma
4455 + h->root.u.def.section->output_offset);
4456 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4457 rela.r_addend = 0;
4458 if (h->root.u.def.section == htab->elf.sdynrelro)
4459 s = htab->elf.sreldynrelro;
4460 else
4461 s = htab->elf.srelbss;
4462 sparc_elf_append_rela (output_bfd, s, &rela);
4463 }
4464
4465 /* Mark some specially defined symbols as absolute. On VxWorks,
4466 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4467 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4468 if (sym != NULL
4469 && (h == htab->elf.hdynamic
4470 || (htab->elf.target_os != is_vxworks
4471 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4472 sym->st_shndx = SHN_ABS;
4473
4474 return true;
4475 }
4476
4477 /* Finish up the dynamic sections. */
4478
4479 static bool
sparc_finish_dyn(bfd * output_bfd,struct bfd_link_info * info,bfd * dynobj,asection * sdyn,asection * splt ATTRIBUTE_UNUSED)4480 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4481 bfd *dynobj, asection *sdyn,
4482 asection *splt ATTRIBUTE_UNUSED)
4483 {
4484 struct _bfd_sparc_elf_link_hash_table *htab;
4485 const struct elf_backend_data *bed;
4486 bfd_byte *dyncon, *dynconend;
4487 size_t dynsize;
4488 int stt_regidx = -1;
4489 bool abi_64_p;
4490
4491 htab = _bfd_sparc_elf_hash_table (info);
4492 BFD_ASSERT (htab != NULL);
4493 bed = get_elf_backend_data (output_bfd);
4494 dynsize = bed->s->sizeof_dyn;
4495 dynconend = sdyn->contents + sdyn->size;
4496 abi_64_p = ABI_64_P (output_bfd);
4497 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4498 {
4499 Elf_Internal_Dyn dyn;
4500 bool size;
4501
4502 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4503
4504 if (htab->elf.target_os == is_vxworks && dyn.d_tag == DT_PLTGOT)
4505 {
4506 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4507 not to the start of the PLT. */
4508 if (htab->elf.sgotplt)
4509 {
4510 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4511 + htab->elf.sgotplt->output_offset);
4512 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4513 }
4514 }
4515 else if (htab->elf.target_os == is_vxworks
4516 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4517 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4518 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4519 {
4520 if (stt_regidx == -1)
4521 {
4522 stt_regidx =
4523 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4524 if (stt_regidx == -1)
4525 return false;
4526 }
4527 dyn.d_un.d_val = stt_regidx++;
4528 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4529 }
4530 else
4531 {
4532 asection *s;
4533
4534 switch (dyn.d_tag)
4535 {
4536 case DT_PLTGOT:
4537 s = htab->elf.splt;
4538 size = false;
4539 break;
4540 case DT_PLTRELSZ:
4541 s = htab->elf.srelplt;
4542 size = true;
4543 break;
4544 case DT_JMPREL:
4545 s = htab->elf.srelplt;
4546 size = false;
4547 break;
4548 default:
4549 continue;
4550 }
4551
4552 if (s == NULL)
4553 dyn.d_un.d_val = 0;
4554 else
4555 {
4556 if (!size)
4557 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4558 else
4559 dyn.d_un.d_val = s->size;
4560 }
4561 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4562 }
4563 }
4564 return true;
4565 }
4566
4567 /* Install the first PLT entry in a VxWorks executable and make sure that
4568 .rela.plt.unloaded relocations have the correct symbol indexes. */
4569
4570 static void
sparc_vxworks_finish_exec_plt(bfd * output_bfd,struct bfd_link_info * info)4571 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4572 {
4573 struct _bfd_sparc_elf_link_hash_table *htab;
4574 Elf_Internal_Rela rela;
4575 bfd_vma got_base;
4576 bfd_byte *loc;
4577
4578 htab = _bfd_sparc_elf_hash_table (info);
4579 BFD_ASSERT (htab != NULL);
4580
4581 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4582 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4583 + htab->elf.hgot->root.u.def.section->output_offset
4584 + htab->elf.hgot->root.u.def.value);
4585
4586 /* Install the initial PLT entry. */
4587 bfd_put_32 (output_bfd,
4588 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4589 htab->elf.splt->contents);
4590 bfd_put_32 (output_bfd,
4591 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4592 htab->elf.splt->contents + 4);
4593 bfd_put_32 (output_bfd,
4594 sparc_vxworks_exec_plt0_entry[2],
4595 htab->elf.splt->contents + 8);
4596 bfd_put_32 (output_bfd,
4597 sparc_vxworks_exec_plt0_entry[3],
4598 htab->elf.splt->contents + 12);
4599 bfd_put_32 (output_bfd,
4600 sparc_vxworks_exec_plt0_entry[4],
4601 htab->elf.splt->contents + 16);
4602
4603 loc = htab->srelplt2->contents;
4604
4605 /* Add an unloaded relocation for the initial entry's "sethi". */
4606 rela.r_offset = (htab->elf.splt->output_section->vma
4607 + htab->elf.splt->output_offset);
4608 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4609 rela.r_addend = 8;
4610 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4611 loc += sizeof (Elf32_External_Rela);
4612
4613 /* Likewise the following "or". */
4614 rela.r_offset += 4;
4615 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4616 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4617 loc += sizeof (Elf32_External_Rela);
4618
4619 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4620 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4621 in which symbols were output. */
4622 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4623 {
4624 Elf_Internal_Rela rel;
4625
4626 /* The entry's initial "sethi" (against _G_O_T_). */
4627 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4628 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4629 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4630 loc += sizeof (Elf32_External_Rela);
4631
4632 /* The following "or" (also against _G_O_T_). */
4633 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4634 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4635 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4636 loc += sizeof (Elf32_External_Rela);
4637
4638 /* The .got.plt entry (against _P_L_T_). */
4639 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4640 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4641 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4642 loc += sizeof (Elf32_External_Rela);
4643 }
4644 }
4645
4646 /* Install the first PLT entry in a VxWorks shared object. */
4647
4648 static void
sparc_vxworks_finish_shared_plt(bfd * output_bfd,struct bfd_link_info * info)4649 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4650 {
4651 struct _bfd_sparc_elf_link_hash_table *htab;
4652 unsigned int i;
4653
4654 htab = _bfd_sparc_elf_hash_table (info);
4655 BFD_ASSERT (htab != NULL);
4656
4657 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4658 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4659 htab->elf.splt->contents + i * 4);
4660 }
4661
4662 /* Finish up local dynamic symbol handling. We set the contents of
4663 various dynamic sections here. */
4664
4665 static int
finish_local_dynamic_symbol(void ** slot,void * inf)4666 finish_local_dynamic_symbol (void **slot, void *inf)
4667 {
4668 struct elf_link_hash_entry *h
4669 = (struct elf_link_hash_entry *) *slot;
4670 struct bfd_link_info *info
4671 = (struct bfd_link_info *) inf;
4672
4673 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4674 h, NULL);
4675 }
4676
4677 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4678 here since undefined weak symbol may not be dynamic and may not be
4679 called for _bfd_sparc_elf_finish_dynamic_symbol. */
4680
4681 static bool
pie_finish_undefweak_symbol(struct bfd_hash_entry * bh,void * inf)4682 pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4683 void *inf)
4684 {
4685 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4686 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4687
4688 if (h->root.type != bfd_link_hash_undefweak
4689 || h->dynindx != -1)
4690 return true;
4691
4692 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4693 h, NULL);
4694 }
4695
4696 bool
_bfd_sparc_elf_finish_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)4697 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4698 {
4699 bfd *dynobj;
4700 asection *sdyn;
4701 struct _bfd_sparc_elf_link_hash_table *htab;
4702
4703 htab = _bfd_sparc_elf_hash_table (info);
4704 BFD_ASSERT (htab != NULL);
4705 dynobj = htab->elf.dynobj;
4706
4707 /* We arranged in size_dynamic_sections to put the STT_REGISTER
4708 entries at the end of the dynlocal list, so they came at the end
4709 of the local symbols in the symtab. Except that they aren't
4710 STB_LOCAL, so we need to back up symtab->sh_info. */
4711 if (ABI_64_P (output_bfd)
4712 && elf_hash_table (info)->dynlocal)
4713 {
4714 asection *dynsymsec = bfd_get_linker_section (dynobj, ".dynsym");
4715 struct elf_link_local_dynamic_entry *e;
4716
4717 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
4718 if (e->input_indx == -1)
4719 break;
4720 if (e)
4721 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
4722 = e->dynindx;
4723 }
4724
4725 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4726
4727 if (elf_hash_table (info)->dynamic_sections_created)
4728 {
4729 asection *splt;
4730
4731 splt = htab->elf.splt;
4732 BFD_ASSERT (splt != NULL && sdyn != NULL);
4733
4734 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4735 return false;
4736
4737 /* Initialize the contents of the .plt section. */
4738 if (splt->size > 0)
4739 {
4740 if (htab->elf.target_os == is_vxworks)
4741 {
4742 if (bfd_link_pic (info))
4743 sparc_vxworks_finish_shared_plt (output_bfd, info);
4744 else
4745 sparc_vxworks_finish_exec_plt (output_bfd, info);
4746 }
4747 else
4748 {
4749 memset (splt->contents, 0, htab->plt_header_size);
4750 if (!ABI_64_P (output_bfd))
4751 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4752 splt->contents + splt->size - 4);
4753 }
4754 }
4755
4756 if (elf_section_data (splt->output_section) != NULL)
4757 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4758 = ((htab->elf.target_os == is_vxworks
4759 || !ABI_64_P (output_bfd))
4760 ? 0 : htab->plt_entry_size);
4761 }
4762
4763 /* Set the first entry in the global offset table to the address of
4764 the dynamic section. */
4765 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4766 {
4767 bfd_vma val = (sdyn ?
4768 sdyn->output_section->vma + sdyn->output_offset :
4769 0);
4770
4771 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4772 }
4773
4774 if (htab->elf.sgot)
4775 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4776 SPARC_ELF_WORD_BYTES (htab);
4777
4778 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4779 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4780
4781 /* Fill PLT entries for undefined weak symbols in PIE. */
4782 if (bfd_link_pie (info))
4783 bfd_hash_traverse (&info->hash->table,
4784 pie_finish_undefweak_symbol,
4785 info);
4786 return true;
4787 }
4788
4789
4790 /* Set the right machine number for a SPARC ELF file. */
4791
4792 bool
_bfd_sparc_elf_object_p(bfd * abfd)4793 _bfd_sparc_elf_object_p (bfd *abfd)
4794 {
4795 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4796 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4797 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4798
4799 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4800 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4801 | ELF_SPARC_HWCAP_VIS3
4802 | ELF_SPARC_HWCAP_HPC);
4803 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4804 | ELF_SPARC_HWCAP_DES
4805 | ELF_SPARC_HWCAP_KASUMI
4806 | ELF_SPARC_HWCAP_CAMELLIA
4807 | ELF_SPARC_HWCAP_MD5
4808 | ELF_SPARC_HWCAP_SHA1
4809 | ELF_SPARC_HWCAP_SHA256
4810 | ELF_SPARC_HWCAP_SHA512
4811 | ELF_SPARC_HWCAP_MPMUL
4812 | ELF_SPARC_HWCAP_MONT
4813 | ELF_SPARC_HWCAP_CRC32C
4814 | ELF_SPARC_HWCAP_CBCOND
4815 | ELF_SPARC_HWCAP_PAUSE);
4816 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4817 | ELF_SPARC_HWCAP_IMA);
4818 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4819 | ELF_SPARC_HWCAP2_MWAIT
4820 | ELF_SPARC_HWCAP2_XMPMUL
4821 | ELF_SPARC_HWCAP2_XMONT);
4822 unsigned int m8_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC6
4823 | ELF_SPARC_HWCAP2_ONADDSUB
4824 | ELF_SPARC_HWCAP2_ONMUL
4825 | ELF_SPARC_HWCAP2_ONDIV
4826 | ELF_SPARC_HWCAP2_DICTUNP
4827 | ELF_SPARC_HWCAP2_FPCMPSHL
4828 | ELF_SPARC_HWCAP2_RLE
4829 | ELF_SPARC_HWCAP2_SHA3);
4830
4831 if (ABI_64_P (abfd))
4832 {
4833 unsigned long mach = bfd_mach_sparc_v9;
4834
4835 if (hwcaps2->i & m8_hwcaps2_mask)
4836 mach = bfd_mach_sparc_v9m8;
4837 else if (hwcaps2->i & v9m_hwcaps2_mask)
4838 mach = bfd_mach_sparc_v9m;
4839 else if (hwcaps->i & v9v_hwcaps_mask)
4840 mach = bfd_mach_sparc_v9v;
4841 else if (hwcaps->i & v9e_hwcaps_mask)
4842 mach = bfd_mach_sparc_v9e;
4843 else if (hwcaps->i & v9d_hwcaps_mask)
4844 mach = bfd_mach_sparc_v9d;
4845 else if (hwcaps->i & v9c_hwcaps_mask)
4846 mach = bfd_mach_sparc_v9c;
4847 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4848 mach = bfd_mach_sparc_v9b;
4849 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4850 mach = bfd_mach_sparc_v9a;
4851 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4852 }
4853 else
4854 {
4855 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4856 {
4857 if (hwcaps2->i & m8_hwcaps2_mask)
4858 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4859 bfd_mach_sparc_v8plusm8);
4860 else if (hwcaps2->i & v9m_hwcaps2_mask)
4861 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4862 bfd_mach_sparc_v8plusm);
4863 else if (hwcaps->i & v9v_hwcaps_mask)
4864 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4865 bfd_mach_sparc_v8plusv);
4866 else if (hwcaps->i & v9e_hwcaps_mask)
4867 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4868 bfd_mach_sparc_v8pluse);
4869 else if (hwcaps->i & v9d_hwcaps_mask)
4870 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4871 bfd_mach_sparc_v8plusd);
4872 else if (hwcaps->i & v9c_hwcaps_mask)
4873 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4874 bfd_mach_sparc_v8plusc);
4875 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4876 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4877 bfd_mach_sparc_v8plusb);
4878 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4879 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4880 bfd_mach_sparc_v8plusa);
4881 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4882 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4883 bfd_mach_sparc_v8plus);
4884 else
4885 return false;
4886 }
4887 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4888 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4889 bfd_mach_sparc_sparclite_le);
4890 else
4891 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4892 }
4893 }
4894
4895 /* Return address for Ith PLT stub in section PLT, for relocation REL
4896 or (bfd_vma) -1 if it should not be included. */
4897
4898 bfd_vma
_bfd_sparc_elf_plt_sym_val(bfd_vma i,const asection * plt,const arelent * rel)4899 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4900 {
4901 if (ABI_64_P (plt->owner))
4902 {
4903 bfd_vma j;
4904
4905 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4906 if (i < PLT64_LARGE_THRESHOLD)
4907 return plt->vma + i * PLT64_ENTRY_SIZE;
4908
4909 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4910 i -= j;
4911 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4912 }
4913 else
4914 return rel->address;
4915 }
4916
4917 /* Merge backend specific data from an object file to the output
4918 object file when linking. */
4919
4920 bool
_bfd_sparc_elf_merge_private_bfd_data(bfd * ibfd,struct bfd_link_info * info)4921 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4922 {
4923 bfd *obfd = info->output_bfd;
4924 obj_attribute *in_attr, *in_attrs;
4925 obj_attribute *out_attr, *out_attrs;
4926
4927 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4928 {
4929 /* This is the first object. Copy the attributes. */
4930 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4931
4932 /* Use the Tag_null value to indicate the attributes have been
4933 initialized. */
4934 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4935
4936 return true;
4937 }
4938
4939 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4940 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4941
4942 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4943 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4944
4945 out_attr->i |= in_attr->i;
4946 out_attr->type = 1;
4947
4948 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4949 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4950
4951 out_attr->i |= in_attr->i;
4952 out_attr->type = 1;
4953
4954 /* Merge Tag_compatibility attributes and any common GNU ones. */
4955 _bfd_elf_merge_object_attributes (ibfd, info);
4956
4957 return true;
4958 }
4959