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