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[deliverable/binutils-gdb.git] / bfd / elfxx-sparc.c
1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2015 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* This file handles functionality common to the different SPARC ABI's. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34 #include "objalloc.h"
35 #include "hashtab.h"
36
37 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
38 #define MINUS_ONE (~ (bfd_vma) 0)
39
40 #define ABI_64_P(abfd) \
41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
42
43 /* The relocation "howto" table. */
44
45 /* Utility for performing the standard initial work of an instruction
46 relocation.
47 *PRELOCATION will contain the relocated item.
48 *PINSN will contain the instruction from the input stream.
49 If the result is `bfd_reloc_other' the caller can continue with
50 performing the relocation. Otherwise it must stop and return the
51 value to its caller. */
52
53 static bfd_reloc_status_type
54 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
55 void * data, asection *input_section, bfd *output_bfd,
56 bfd_vma *prelocation, bfd_vma *pinsn)
57 {
58 bfd_vma relocation;
59 reloc_howto_type *howto = reloc_entry->howto;
60
61 if (output_bfd != (bfd *) NULL
62 && (symbol->flags & BSF_SECTION_SYM) == 0
63 && (! howto->partial_inplace
64 || reloc_entry->addend == 0))
65 {
66 reloc_entry->address += input_section->output_offset;
67 return bfd_reloc_ok;
68 }
69
70 /* This works because partial_inplace is FALSE. */
71 if (output_bfd != NULL)
72 return bfd_reloc_continue;
73
74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
75 return bfd_reloc_outofrange;
76
77 relocation = (symbol->value
78 + symbol->section->output_section->vma
79 + symbol->section->output_offset);
80 relocation += reloc_entry->addend;
81 if (howto->pc_relative)
82 {
83 relocation -= (input_section->output_section->vma
84 + input_section->output_offset);
85 relocation -= reloc_entry->address;
86 }
87
88 *prelocation = relocation;
89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
90 return bfd_reloc_other;
91 }
92
93 /* For unsupported relocs. */
94
95 static bfd_reloc_status_type
96 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
97 arelent *reloc_entry ATTRIBUTE_UNUSED,
98 asymbol *symbol ATTRIBUTE_UNUSED,
99 void * data ATTRIBUTE_UNUSED,
100 asection *input_section ATTRIBUTE_UNUSED,
101 bfd *output_bfd ATTRIBUTE_UNUSED,
102 char **error_message ATTRIBUTE_UNUSED)
103 {
104 return bfd_reloc_notsupported;
105 }
106
107 /* Handle the WDISP16 reloc. */
108
109 static bfd_reloc_status_type
110 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
111 void * data, asection *input_section, bfd *output_bfd,
112 char **error_message ATTRIBUTE_UNUSED)
113 {
114 bfd_vma relocation;
115 bfd_vma insn;
116 bfd_reloc_status_type status;
117
118 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
119 input_section, output_bfd, &relocation, &insn);
120 if (status != bfd_reloc_other)
121 return status;
122
123 insn &= ~ (bfd_vma) 0x303fff;
124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
126
127 if ((bfd_signed_vma) relocation < - 0x40000
128 || (bfd_signed_vma) relocation > 0x3ffff)
129 return bfd_reloc_overflow;
130 else
131 return bfd_reloc_ok;
132 }
133
134 /* Handle the WDISP10 reloc. */
135
136 static bfd_reloc_status_type
137 sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 void * data, asection *input_section, bfd *output_bfd,
139 char **error_message ATTRIBUTE_UNUSED)
140 {
141 bfd_vma relocation;
142 bfd_vma insn;
143 bfd_reloc_status_type status;
144
145 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
146 input_section, output_bfd, &relocation, &insn);
147 if (status != bfd_reloc_other)
148 return status;
149
150 insn &= ~ (bfd_vma) 0x181fe0;
151 insn |= (((relocation >> 2) & 0x300) << 11)
152 | (((relocation >> 2) & 0xff) << 5);
153 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
154
155 if ((bfd_signed_vma) relocation < - 0x1000
156 || (bfd_signed_vma) relocation > 0xfff)
157 return bfd_reloc_overflow;
158 else
159 return bfd_reloc_ok;
160 }
161
162 /* Handle the HIX22 reloc. */
163
164 static bfd_reloc_status_type
165 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
166 void * data, asection *input_section, bfd *output_bfd,
167 char **error_message ATTRIBUTE_UNUSED)
168 {
169 bfd_vma relocation;
170 bfd_vma insn;
171 bfd_reloc_status_type status;
172
173 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
174 input_section, output_bfd, &relocation, &insn);
175 if (status != bfd_reloc_other)
176 return status;
177
178 relocation ^= MINUS_ONE;
179 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
180 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
181
182 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
183 return bfd_reloc_overflow;
184 else
185 return bfd_reloc_ok;
186 }
187
188 /* Handle the LOX10 reloc. */
189
190 static bfd_reloc_status_type
191 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
192 void * data, asection *input_section, bfd *output_bfd,
193 char **error_message ATTRIBUTE_UNUSED)
194 {
195 bfd_vma relocation;
196 bfd_vma insn;
197 bfd_reloc_status_type status;
198
199 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
200 input_section, output_bfd, &relocation, &insn);
201 if (status != bfd_reloc_other)
202 return status;
203
204 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
205 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
206
207 return bfd_reloc_ok;
208 }
209
210 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
211 {
212 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
213 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
214 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
215 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
216 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
217 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
218 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
219 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
220 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
221 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
223 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
224 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
225 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
226 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
227 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
228 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
229 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
230 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
231 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
232 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
233 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
234 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
235 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
236 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
237 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
238 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
239 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
240 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
241 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
242 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
243 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
244 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
245 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
246 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
247 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
248 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
249 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE),
250 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE),
251 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE),
252 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
253 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
254 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
255 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
256 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
257 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
258 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
259 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
260 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
261 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
262 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
263 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
264 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
265 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
266 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
267 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
268 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
269 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
270 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
271 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
272 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
273 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
274 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
275 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
276 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
277 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
278 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
279 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
280 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
281 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
282 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
283 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
284 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
285 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
286 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
287 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
288 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
289 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE),
290 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
291 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE),
292 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE),
293 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE),
294 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE),
295 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE),
296 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE),
297 HOWTO(R_SPARC_H34,12,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",FALSE,0,0x003fffff,FALSE),
298 HOWTO(R_SPARC_SIZE32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",FALSE,0,0xffffffff,TRUE),
299 HOWTO(R_SPARC_SIZE64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",FALSE,0,MINUS_ONE, TRUE),
300 HOWTO(R_SPARC_WDISP10,2,2,10,TRUE, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",FALSE,0,0x00000000,TRUE),
301 };
302 static reloc_howto_type sparc_jmp_irel_howto =
303 HOWTO(R_SPARC_JMP_IREL, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",FALSE,0,0x00000000,TRUE);
304 static reloc_howto_type sparc_irelative_howto =
305 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
306 static reloc_howto_type sparc_vtinherit_howto =
307 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
308 static reloc_howto_type sparc_vtentry_howto =
309 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
310 static reloc_howto_type sparc_rev32_howto =
311 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
312
313 reloc_howto_type *
314 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
315 bfd_reloc_code_real_type code)
316 {
317 /* We explicitly handle each relocation type in the switch
318 instead of using a lookup table for efficiency. */
319 switch (code)
320 {
321 case BFD_RELOC_NONE:
322 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
323
324 case BFD_RELOC_8:
325 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
326
327 case BFD_RELOC_16:
328 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
329
330 case BFD_RELOC_32:
331 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
332
333 case BFD_RELOC_8_PCREL:
334 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
335
336 case BFD_RELOC_16_PCREL:
337 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
338
339 case BFD_RELOC_32_PCREL:
340 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
341
342 case BFD_RELOC_32_PCREL_S2:
343 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
344
345 case BFD_RELOC_SPARC_WDISP22:
346 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
347
348 case BFD_RELOC_HI22:
349 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
350
351 case BFD_RELOC_SPARC22:
352 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
353
354 case BFD_RELOC_SPARC13:
355 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
356
357 case BFD_RELOC_LO10:
358 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
359
360 case BFD_RELOC_SPARC_GOT10:
361 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
362
363 case BFD_RELOC_SPARC_GOT13:
364 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
365
366 case BFD_RELOC_SPARC_GOT22:
367 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
368
369 case BFD_RELOC_SPARC_PC10:
370 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
371
372 case BFD_RELOC_SPARC_PC22:
373 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
374
375 case BFD_RELOC_SPARC_WPLT30:
376 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
377
378 case BFD_RELOC_SPARC_COPY:
379 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
380
381 case BFD_RELOC_SPARC_GLOB_DAT:
382 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
383
384 case BFD_RELOC_SPARC_JMP_SLOT:
385 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
386
387 case BFD_RELOC_SPARC_RELATIVE:
388 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
389
390 case BFD_RELOC_SPARC_UA32:
391 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
392
393 case BFD_RELOC_SPARC_PLT32:
394 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
395
396 case BFD_RELOC_SPARC_10:
397 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
398
399 case BFD_RELOC_SPARC_11:
400 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
401
402 case BFD_RELOC_SPARC_64:
403 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
404
405 case BFD_RELOC_SPARC_OLO10:
406 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
407
408 case BFD_RELOC_SPARC_HH22:
409 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
410
411 case BFD_RELOC_SPARC_HM10:
412 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
413
414 case BFD_RELOC_SPARC_LM22:
415 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
416
417 case BFD_RELOC_SPARC_PC_HH22:
418 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
419
420 case BFD_RELOC_SPARC_PC_HM10:
421 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
422
423 case BFD_RELOC_SPARC_PC_LM22:
424 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
425
426 case BFD_RELOC_SPARC_WDISP16:
427 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
428
429 case BFD_RELOC_SPARC_WDISP19:
430 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
431
432 case BFD_RELOC_SPARC_7:
433 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
434
435 case BFD_RELOC_SPARC_5:
436 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
437
438 case BFD_RELOC_SPARC_6:
439 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
440
441 case BFD_RELOC_SPARC_DISP64:
442 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
443
444 case BFD_RELOC_SPARC_PLT64:
445 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
446
447 case BFD_RELOC_SPARC_HIX22:
448 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
449
450 case BFD_RELOC_SPARC_LOX10:
451 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
452
453 case BFD_RELOC_SPARC_H44:
454 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
455
456 case BFD_RELOC_SPARC_M44:
457 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
458
459 case BFD_RELOC_SPARC_L44:
460 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
461
462 case BFD_RELOC_SPARC_REGISTER:
463 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
464
465 case BFD_RELOC_SPARC_UA64:
466 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
467
468 case BFD_RELOC_SPARC_UA16:
469 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
470
471 case BFD_RELOC_SPARC_TLS_GD_HI22:
472 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
473
474 case BFD_RELOC_SPARC_TLS_GD_LO10:
475 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
476
477 case BFD_RELOC_SPARC_TLS_GD_ADD:
478 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
479
480 case BFD_RELOC_SPARC_TLS_GD_CALL:
481 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
482
483 case BFD_RELOC_SPARC_TLS_LDM_HI22:
484 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
485
486 case BFD_RELOC_SPARC_TLS_LDM_LO10:
487 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
488
489 case BFD_RELOC_SPARC_TLS_LDM_ADD:
490 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
491
492 case BFD_RELOC_SPARC_TLS_LDM_CALL:
493 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
494
495 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
496 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
497
498 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
499 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
500
501 case BFD_RELOC_SPARC_TLS_LDO_ADD:
502 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
503
504 case BFD_RELOC_SPARC_TLS_IE_HI22:
505 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
506
507 case BFD_RELOC_SPARC_TLS_IE_LO10:
508 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
509
510 case BFD_RELOC_SPARC_TLS_IE_LD:
511 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
512
513 case BFD_RELOC_SPARC_TLS_IE_LDX:
514 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
515
516 case BFD_RELOC_SPARC_TLS_IE_ADD:
517 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
518
519 case BFD_RELOC_SPARC_TLS_LE_HIX22:
520 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
521
522 case BFD_RELOC_SPARC_TLS_LE_LOX10:
523 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
524
525 case BFD_RELOC_SPARC_TLS_DTPMOD32:
526 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
527
528 case BFD_RELOC_SPARC_TLS_DTPMOD64:
529 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
530
531 case BFD_RELOC_SPARC_TLS_DTPOFF32:
532 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
533
534 case BFD_RELOC_SPARC_TLS_DTPOFF64:
535 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
536
537 case BFD_RELOC_SPARC_TLS_TPOFF32:
538 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
539
540 case BFD_RELOC_SPARC_TLS_TPOFF64:
541 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
542
543 case BFD_RELOC_SPARC_GOTDATA_HIX22:
544 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
545
546 case BFD_RELOC_SPARC_GOTDATA_LOX10:
547 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
548
549 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
550 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
551
552 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
553 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
554
555 case BFD_RELOC_SPARC_GOTDATA_OP:
556 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
557
558 case BFD_RELOC_SPARC_H34:
559 return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
560
561 case BFD_RELOC_SPARC_SIZE32:
562 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
563
564 case BFD_RELOC_SPARC_SIZE64:
565 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
566
567 case BFD_RELOC_SPARC_WDISP10:
568 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
569
570 case BFD_RELOC_SPARC_JMP_IREL:
571 return &sparc_jmp_irel_howto;
572
573 case BFD_RELOC_SPARC_IRELATIVE:
574 return &sparc_irelative_howto;
575
576 case BFD_RELOC_VTABLE_INHERIT:
577 return &sparc_vtinherit_howto;
578
579 case BFD_RELOC_VTABLE_ENTRY:
580 return &sparc_vtentry_howto;
581
582 case BFD_RELOC_SPARC_REV32:
583 return &sparc_rev32_howto;
584
585 default:
586 break;
587 }
588 bfd_set_error (bfd_error_bad_value);
589 return NULL;
590 }
591
592 reloc_howto_type *
593 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
594 const char *r_name)
595 {
596 unsigned int i;
597
598 for (i = 0;
599 i < (sizeof (_bfd_sparc_elf_howto_table)
600 / sizeof (_bfd_sparc_elf_howto_table[0]));
601 i++)
602 if (_bfd_sparc_elf_howto_table[i].name != NULL
603 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
604 return &_bfd_sparc_elf_howto_table[i];
605
606 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
607 return &sparc_vtinherit_howto;
608 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
609 return &sparc_vtentry_howto;
610 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
611 return &sparc_rev32_howto;
612
613 return NULL;
614 }
615
616 reloc_howto_type *
617 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
618 {
619 switch (r_type)
620 {
621 case R_SPARC_JMP_IREL:
622 return &sparc_jmp_irel_howto;
623
624 case R_SPARC_IRELATIVE:
625 return &sparc_irelative_howto;
626
627 case R_SPARC_GNU_VTINHERIT:
628 return &sparc_vtinherit_howto;
629
630 case R_SPARC_GNU_VTENTRY:
631 return &sparc_vtentry_howto;
632
633 case R_SPARC_REV32:
634 return &sparc_rev32_howto;
635
636 default:
637 if (r_type >= (unsigned int) R_SPARC_max_std)
638 {
639 (*_bfd_error_handler) (_("invalid relocation type %d"),
640 (int) r_type);
641 r_type = R_SPARC_NONE;
642 }
643 return &_bfd_sparc_elf_howto_table[r_type];
644 }
645 }
646
647 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
648 so just take advantage of that. */
649 #define SPARC_ELF_R_TYPE(r_info) \
650 ((r_info) & 0xff)
651
652 void
653 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
654 Elf_Internal_Rela *dst)
655 {
656 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
657
658 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
659 }
660 \f
661
662 /* The nop opcode we use. */
663 #define SPARC_NOP 0x01000000
664
665 #define SPARC_INSN_BYTES 4
666
667 /* The SPARC linker needs to keep track of the number of relocs that it
668 decides to copy as dynamic relocs in check_relocs for each symbol.
669 This is so that it can later discard them if they are found to be
670 unnecessary. We store the information in a field extending the
671 regular ELF linker hash table. */
672
673 struct _bfd_sparc_elf_dyn_relocs
674 {
675 struct _bfd_sparc_elf_dyn_relocs *next;
676
677 /* The input section of the reloc. */
678 asection *sec;
679
680 /* Total number of relocs copied for the input section. */
681 bfd_size_type count;
682
683 /* Number of pc-relative relocs copied for the input section. */
684 bfd_size_type pc_count;
685 };
686
687 /* SPARC ELF linker hash entry. */
688
689 struct _bfd_sparc_elf_link_hash_entry
690 {
691 struct elf_link_hash_entry elf;
692
693 /* Track dynamic relocs copied for this symbol. */
694 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
695
696 #define GOT_UNKNOWN 0
697 #define GOT_NORMAL 1
698 #define GOT_TLS_GD 2
699 #define GOT_TLS_IE 3
700 unsigned char tls_type;
701 };
702
703 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
704
705 struct _bfd_sparc_elf_obj_tdata
706 {
707 struct elf_obj_tdata root;
708
709 /* tls_type for each local got entry. */
710 char *local_got_tls_type;
711
712 /* TRUE if TLS GD relocs has been seen for this object. */
713 bfd_boolean has_tlsgd;
714 };
715
716 #define _bfd_sparc_elf_tdata(abfd) \
717 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
718
719 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
720 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
721
722 #define is_sparc_elf(bfd) \
723 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
724 && elf_tdata (bfd) != NULL \
725 && elf_object_id (bfd) == SPARC_ELF_DATA)
726
727 bfd_boolean
728 _bfd_sparc_elf_mkobject (bfd *abfd)
729 {
730 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
731 SPARC_ELF_DATA);
732 }
733
734 static void
735 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
736 {
737 bfd_put_32 (abfd, val, ptr);
738 }
739
740 static void
741 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
742 {
743 bfd_put_64 (abfd, val, ptr);
744 }
745
746 static void
747 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
748 {
749 const struct elf_backend_data *bed;
750 bfd_byte *loc;
751
752 bed = get_elf_backend_data (abfd);
753 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
754 bed->s->swap_reloca_out (abfd, rel, loc);
755 }
756
757 static bfd_vma
758 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
759 bfd_vma rel_index ATTRIBUTE_UNUSED,
760 bfd_vma type ATTRIBUTE_UNUSED)
761 {
762 return ELF64_R_INFO (rel_index,
763 (in_rel ?
764 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
765 type) : type));
766 }
767
768 static bfd_vma
769 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
770 bfd_vma rel_index, bfd_vma type)
771 {
772 return ELF32_R_INFO (rel_index, type);
773 }
774
775 static bfd_vma
776 sparc_elf_r_symndx_64 (bfd_vma r_info)
777 {
778 bfd_vma r_symndx = ELF32_R_SYM (r_info);
779 return (r_symndx >> 24);
780 }
781
782 static bfd_vma
783 sparc_elf_r_symndx_32 (bfd_vma r_info)
784 {
785 return ELF32_R_SYM (r_info);
786 }
787
788 /* PLT/GOT stuff */
789
790 #define PLT32_ENTRY_SIZE 12
791 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
792
793 /* The first four entries in a 32-bit procedure linkage table are reserved,
794 and the initial contents are unimportant (we zero them out).
795 Subsequent entries look like this. See the SVR4 ABI SPARC
796 supplement to see how this works. */
797
798 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
799 #define PLT32_ENTRY_WORD0 0x03000000
800 /* b,a .plt0. We fill in the offset later. */
801 #define PLT32_ENTRY_WORD1 0x30800000
802 /* nop. */
803 #define PLT32_ENTRY_WORD2 SPARC_NOP
804
805 static int
806 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
807 bfd_vma max ATTRIBUTE_UNUSED,
808 bfd_vma *r_offset)
809 {
810 bfd_put_32 (output_bfd,
811 PLT32_ENTRY_WORD0 + offset,
812 splt->contents + offset);
813 bfd_put_32 (output_bfd,
814 (PLT32_ENTRY_WORD1
815 + (((- (offset + 4)) >> 2) & 0x3fffff)),
816 splt->contents + offset + 4);
817 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
818 splt->contents + offset + 8);
819
820 *r_offset = offset;
821
822 return offset / PLT32_ENTRY_SIZE - 4;
823 }
824
825 /* Both the headers and the entries are icache aligned. */
826 #define PLT64_ENTRY_SIZE 32
827 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
828 #define PLT64_LARGE_THRESHOLD 32768
829
830 static int
831 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
832 bfd_vma max, bfd_vma *r_offset)
833 {
834 unsigned char *entry = splt->contents + offset;
835 const unsigned int nop = SPARC_NOP;
836 int plt_index;
837
838 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
839 {
840 unsigned int sethi, ba;
841
842 *r_offset = offset;
843
844 plt_index = (offset / PLT64_ENTRY_SIZE);
845
846 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
847 ba = 0x30680000
848 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
849
850 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
851 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
852 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
853 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
854 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
855 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
856 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
857 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
858 }
859 else
860 {
861 unsigned char *ptr;
862 unsigned int ldx;
863 int block, last_block, ofs, last_ofs, chunks_this_block;
864 const int insn_chunk_size = (6 * 4);
865 const int ptr_chunk_size = (1 * 8);
866 const int entries_per_block = 160;
867 const int block_size = entries_per_block * (insn_chunk_size
868 + ptr_chunk_size);
869
870 /* Entries 32768 and higher are grouped into blocks of 160.
871 The blocks are further subdivided into 160 sequences of
872 6 instructions and 160 pointers. If a block does not require
873 the full 160 entries, let's say it requires N, then there
874 will be N sequences of 6 instructions and N pointers. */
875
876 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
877 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
878
879 block = offset / block_size;
880 last_block = max / block_size;
881 if (block != last_block)
882 {
883 chunks_this_block = 160;
884 }
885 else
886 {
887 last_ofs = max % block_size;
888 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
889 }
890
891 ofs = offset % block_size;
892
893 plt_index = (PLT64_LARGE_THRESHOLD +
894 (block * 160) +
895 (ofs / insn_chunk_size));
896
897 ptr = splt->contents
898 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
899 + (block * block_size)
900 + (chunks_this_block * insn_chunk_size)
901 + (ofs / insn_chunk_size) * ptr_chunk_size;
902
903 *r_offset = (bfd_vma) (ptr - splt->contents);
904
905 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
906
907 /* mov %o7,%g5
908 call .+8
909 nop
910 ldx [%o7+P],%g1
911 jmpl %o7+%g1,%g1
912 mov %g5,%o7 */
913 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
914 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
915 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
916 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
917 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
918 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
919
920 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
921 }
922
923 return plt_index - 4;
924 }
925
926 /* The format of the first PLT entry in a VxWorks executable. */
927 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
928 {
929 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
930 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
931 0xc4008000, /* ld [ %g2 ], %g2 */
932 0x81c08000, /* jmp %g2 */
933 0x01000000 /* nop */
934 };
935
936 /* The format of subsequent PLT entries. */
937 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
938 {
939 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
940 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
941 0xc2004000, /* ld [ %g1 ], %g1 */
942 0x81c04000, /* jmp %g1 */
943 0x01000000, /* nop */
944 0x03000000, /* sethi %hi(f@pltindex), %g1 */
945 0x10800000, /* b _PLT_resolve */
946 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
947 };
948
949 /* The format of the first PLT entry in a VxWorks shared object. */
950 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
951 {
952 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
953 0x81c08000, /* jmp %g2 */
954 0x01000000 /* nop */
955 };
956
957 /* The format of subsequent PLT entries. */
958 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
959 {
960 0x03000000, /* sethi %hi(f@got), %g1 */
961 0x82106000, /* or %g1, %lo(f@got), %g1 */
962 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
963 0x81c04000, /* jmp %g1 */
964 0x01000000, /* nop */
965 0x03000000, /* sethi %hi(f@pltindex), %g1 */
966 0x10800000, /* b _PLT_resolve */
967 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
968 };
969
970 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
971 htab->put_word(bfd, val, ptr)
972
973 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
974 htab->r_info(in_rel, index, type)
975
976 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
977 htab->r_symndx(r_info)
978
979 #define SPARC_ELF_WORD_BYTES(htab) \
980 htab->bytes_per_word
981
982 #define SPARC_ELF_RELA_BYTES(htab) \
983 htab->bytes_per_rela
984
985 #define SPARC_ELF_DTPOFF_RELOC(htab) \
986 htab->dtpoff_reloc
987
988 #define SPARC_ELF_DTPMOD_RELOC(htab) \
989 htab->dtpmod_reloc
990
991 #define SPARC_ELF_TPOFF_RELOC(htab) \
992 htab->tpoff_reloc
993
994 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
995 htab->build_plt_entry (obfd, splt, off, max, r_off)
996
997 /* Create an entry in an SPARC ELF linker hash table. */
998
999 static struct bfd_hash_entry *
1000 link_hash_newfunc (struct bfd_hash_entry *entry,
1001 struct bfd_hash_table *table, const char *string)
1002 {
1003 /* Allocate the structure if it has not already been allocated by a
1004 subclass. */
1005 if (entry == NULL)
1006 {
1007 entry = bfd_hash_allocate (table,
1008 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1009 if (entry == NULL)
1010 return entry;
1011 }
1012
1013 /* Call the allocation method of the superclass. */
1014 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1015 if (entry != NULL)
1016 {
1017 struct _bfd_sparc_elf_link_hash_entry *eh;
1018
1019 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1020 eh->dyn_relocs = NULL;
1021 eh->tls_type = GOT_UNKNOWN;
1022 }
1023
1024 return entry;
1025 }
1026
1027 /* The name of the dynamic interpreter. This is put in the .interp
1028 section. */
1029
1030 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1031 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1032
1033 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1034 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1035 as global symbol. We reuse indx and dynstr_index for local symbol
1036 hash since they aren't used by global symbols in this backend. */
1037
1038 static hashval_t
1039 elf_sparc_local_htab_hash (const void *ptr)
1040 {
1041 struct elf_link_hash_entry *h
1042 = (struct elf_link_hash_entry *) ptr;
1043 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1044 }
1045
1046 /* Compare local hash entries. */
1047
1048 static int
1049 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1050 {
1051 struct elf_link_hash_entry *h1
1052 = (struct elf_link_hash_entry *) ptr1;
1053 struct elf_link_hash_entry *h2
1054 = (struct elf_link_hash_entry *) ptr2;
1055
1056 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1057 }
1058
1059 /* Find and/or create a hash entry for local symbol. */
1060
1061 static struct elf_link_hash_entry *
1062 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1063 bfd *abfd, const Elf_Internal_Rela *rel,
1064 bfd_boolean create)
1065 {
1066 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1067 asection *sec = abfd->sections;
1068 unsigned long r_symndx;
1069 hashval_t h;
1070 void **slot;
1071
1072 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1073 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1074
1075 e.elf.indx = sec->id;
1076 e.elf.dynstr_index = r_symndx;
1077 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1078 create ? INSERT : NO_INSERT);
1079
1080 if (!slot)
1081 return NULL;
1082
1083 if (*slot)
1084 {
1085 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1086 return &ret->elf;
1087 }
1088
1089 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1090 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1091 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1092 if (ret)
1093 {
1094 memset (ret, 0, sizeof (*ret));
1095 ret->elf.indx = sec->id;
1096 ret->elf.dynstr_index = r_symndx;
1097 ret->elf.dynindx = -1;
1098 ret->elf.plt.offset = (bfd_vma) -1;
1099 ret->elf.got.offset = (bfd_vma) -1;
1100 *slot = ret;
1101 }
1102 return &ret->elf;
1103 }
1104
1105 /* Destroy a SPARC ELF linker hash table. */
1106
1107 static void
1108 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1109 {
1110 struct _bfd_sparc_elf_link_hash_table *htab
1111 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1112
1113 if (htab->loc_hash_table)
1114 htab_delete (htab->loc_hash_table);
1115 if (htab->loc_hash_memory)
1116 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1117 _bfd_elf_link_hash_table_free (obfd);
1118 }
1119
1120 /* Create a SPARC ELF linker hash table. */
1121
1122 struct bfd_link_hash_table *
1123 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1124 {
1125 struct _bfd_sparc_elf_link_hash_table *ret;
1126 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1127
1128 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1129 if (ret == NULL)
1130 return NULL;
1131
1132 if (ABI_64_P (abfd))
1133 {
1134 ret->put_word = sparc_put_word_64;
1135 ret->r_info = sparc_elf_r_info_64;
1136 ret->r_symndx = sparc_elf_r_symndx_64;
1137 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1138 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1139 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1140 ret->word_align_power = 3;
1141 ret->align_power_max = 4;
1142 ret->bytes_per_word = 8;
1143 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1144 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1145 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1146
1147 ret->build_plt_entry = sparc64_plt_entry_build;
1148 ret->plt_header_size = PLT64_HEADER_SIZE;
1149 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1150 }
1151 else
1152 {
1153 ret->put_word = sparc_put_word_32;
1154 ret->r_info = sparc_elf_r_info_32;
1155 ret->r_symndx = sparc_elf_r_symndx_32;
1156 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1157 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1158 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1159 ret->word_align_power = 2;
1160 ret->align_power_max = 3;
1161 ret->bytes_per_word = 4;
1162 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1163 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1164 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1165
1166 ret->build_plt_entry = sparc32_plt_entry_build;
1167 ret->plt_header_size = PLT32_HEADER_SIZE;
1168 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1169 }
1170
1171 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1172 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1173 SPARC_ELF_DATA))
1174 {
1175 free (ret);
1176 return NULL;
1177 }
1178
1179 ret->loc_hash_table = htab_try_create (1024,
1180 elf_sparc_local_htab_hash,
1181 elf_sparc_local_htab_eq,
1182 NULL);
1183 ret->loc_hash_memory = objalloc_create ();
1184 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1185 {
1186 _bfd_sparc_elf_link_hash_table_free (abfd);
1187 return NULL;
1188 }
1189 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1190
1191 return &ret->elf.root;
1192 }
1193
1194 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1195 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1196 hash table. */
1197
1198 bfd_boolean
1199 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1200 struct bfd_link_info *info)
1201 {
1202 struct _bfd_sparc_elf_link_hash_table *htab;
1203
1204 htab = _bfd_sparc_elf_hash_table (info);
1205 BFD_ASSERT (htab != NULL);
1206
1207 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1208 return FALSE;
1209
1210 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1211 if (!info->shared)
1212 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1213
1214 if (htab->is_vxworks)
1215 {
1216 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1217 return FALSE;
1218 if (info->shared)
1219 {
1220 htab->plt_header_size
1221 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1222 htab->plt_entry_size
1223 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1224 }
1225 else
1226 {
1227 htab->plt_header_size
1228 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1229 htab->plt_entry_size
1230 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1231 }
1232 }
1233
1234 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1235 || (!info->shared && !htab->srelbss))
1236 abort ();
1237
1238 return TRUE;
1239 }
1240
1241 static bfd_boolean
1242 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1243 {
1244 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1245 struct elf_link_hash_table *htab = elf_hash_table (info);
1246 flagword flags, pltflags;
1247 asection *s;
1248
1249 if (htab->irelifunc != NULL || htab->iplt != NULL)
1250 return TRUE;
1251
1252 flags = bed->dynamic_sec_flags;
1253 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1254
1255 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1256 if (s == NULL
1257 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1258 return FALSE;
1259 htab->iplt = s;
1260
1261 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1262 flags | SEC_READONLY);
1263 if (s == NULL
1264 || ! bfd_set_section_alignment (abfd, s,
1265 bed->s->log_file_align))
1266 return FALSE;
1267 htab->irelplt = s;
1268
1269 return TRUE;
1270 }
1271
1272 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1273
1274 void
1275 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1276 struct elf_link_hash_entry *dir,
1277 struct elf_link_hash_entry *ind)
1278 {
1279 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1280
1281 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1282 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1283
1284 if (eind->dyn_relocs != NULL)
1285 {
1286 if (edir->dyn_relocs != NULL)
1287 {
1288 struct _bfd_sparc_elf_dyn_relocs **pp;
1289 struct _bfd_sparc_elf_dyn_relocs *p;
1290
1291 /* Add reloc counts against the indirect sym to the direct sym
1292 list. Merge any entries against the same section. */
1293 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1294 {
1295 struct _bfd_sparc_elf_dyn_relocs *q;
1296
1297 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1298 if (q->sec == p->sec)
1299 {
1300 q->pc_count += p->pc_count;
1301 q->count += p->count;
1302 *pp = p->next;
1303 break;
1304 }
1305 if (q == NULL)
1306 pp = &p->next;
1307 }
1308 *pp = edir->dyn_relocs;
1309 }
1310
1311 edir->dyn_relocs = eind->dyn_relocs;
1312 eind->dyn_relocs = NULL;
1313 }
1314
1315 if (ind->root.type == bfd_link_hash_indirect
1316 && dir->got.refcount <= 0)
1317 {
1318 edir->tls_type = eind->tls_type;
1319 eind->tls_type = GOT_UNKNOWN;
1320 }
1321 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1322 }
1323
1324 static int
1325 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1326 int r_type, int is_local)
1327 {
1328 if (! ABI_64_P (abfd)
1329 && r_type == R_SPARC_TLS_GD_HI22
1330 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1331 r_type = R_SPARC_REV32;
1332
1333 if (info->shared)
1334 return r_type;
1335
1336 switch (r_type)
1337 {
1338 case R_SPARC_TLS_GD_HI22:
1339 if (is_local)
1340 return R_SPARC_TLS_LE_HIX22;
1341 return R_SPARC_TLS_IE_HI22;
1342 case R_SPARC_TLS_GD_LO10:
1343 if (is_local)
1344 return R_SPARC_TLS_LE_LOX10;
1345 return R_SPARC_TLS_IE_LO10;
1346 case R_SPARC_TLS_IE_HI22:
1347 if (is_local)
1348 return R_SPARC_TLS_LE_HIX22;
1349 return r_type;
1350 case R_SPARC_TLS_IE_LO10:
1351 if (is_local)
1352 return R_SPARC_TLS_LE_LOX10;
1353 return r_type;
1354 case R_SPARC_TLS_LDM_HI22:
1355 return R_SPARC_TLS_LE_HIX22;
1356 case R_SPARC_TLS_LDM_LO10:
1357 return R_SPARC_TLS_LE_LOX10;
1358 }
1359
1360 return r_type;
1361 }
1362 \f
1363 /* Look through the relocs for a section during the first phase, and
1364 allocate space in the global offset table or procedure linkage
1365 table. */
1366
1367 bfd_boolean
1368 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1369 asection *sec, const Elf_Internal_Rela *relocs)
1370 {
1371 struct _bfd_sparc_elf_link_hash_table *htab;
1372 Elf_Internal_Shdr *symtab_hdr;
1373 struct elf_link_hash_entry **sym_hashes;
1374 const Elf_Internal_Rela *rel;
1375 const Elf_Internal_Rela *rel_end;
1376 asection *sreloc;
1377 int num_relocs;
1378 bfd_boolean checked_tlsgd = FALSE;
1379
1380 if (info->relocatable)
1381 return TRUE;
1382
1383 htab = _bfd_sparc_elf_hash_table (info);
1384 BFD_ASSERT (htab != NULL);
1385 symtab_hdr = &elf_symtab_hdr (abfd);
1386 sym_hashes = elf_sym_hashes (abfd);
1387
1388 sreloc = NULL;
1389
1390 if (ABI_64_P (abfd))
1391 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1392 else
1393 num_relocs = sec->reloc_count;
1394
1395 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1396
1397 if (htab->elf.dynobj == NULL)
1398 htab->elf.dynobj = abfd;
1399 if (!create_ifunc_sections (htab->elf.dynobj, info))
1400 return FALSE;
1401
1402 rel_end = relocs + num_relocs;
1403 for (rel = relocs; rel < rel_end; rel++)
1404 {
1405 unsigned int r_type;
1406 unsigned long r_symndx;
1407 struct elf_link_hash_entry *h;
1408 Elf_Internal_Sym *isym;
1409
1410 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1411 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1412
1413 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1414 {
1415 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1416 abfd, r_symndx);
1417 return FALSE;
1418 }
1419
1420 isym = NULL;
1421 if (r_symndx < symtab_hdr->sh_info)
1422 {
1423 /* A local symbol. */
1424 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1425 abfd, r_symndx);
1426 if (isym == NULL)
1427 return FALSE;
1428
1429 /* Check relocation against local STT_GNU_IFUNC symbol. */
1430 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1431 {
1432 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1433 TRUE);
1434 if (h == NULL)
1435 return FALSE;
1436
1437 /* Fake a STT_GNU_IFUNC symbol. */
1438 h->type = STT_GNU_IFUNC;
1439 h->def_regular = 1;
1440 h->ref_regular = 1;
1441 h->forced_local = 1;
1442 h->root.type = bfd_link_hash_defined;
1443 }
1444 else
1445 h = NULL;
1446 }
1447 else
1448 {
1449 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1450 while (h->root.type == bfd_link_hash_indirect
1451 || h->root.type == bfd_link_hash_warning)
1452 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1453
1454 /* PR15323, ref flags aren't set for references in the same
1455 object. */
1456 h->root.non_ir_ref = 1;
1457 }
1458
1459 if (h && h->type == STT_GNU_IFUNC)
1460 {
1461 if (h->def_regular)
1462 {
1463 h->ref_regular = 1;
1464 h->plt.refcount += 1;
1465 }
1466 }
1467
1468 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1469 with R_SPARC_TLS_GD_HI22. */
1470 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1471 switch (r_type)
1472 {
1473 case R_SPARC_TLS_GD_HI22:
1474 {
1475 const Elf_Internal_Rela *relt;
1476
1477 for (relt = rel + 1; relt < rel_end; relt++)
1478 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1479 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1480 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1481 break;
1482 checked_tlsgd = TRUE;
1483 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1484 }
1485 break;
1486 case R_SPARC_TLS_GD_LO10:
1487 case R_SPARC_TLS_GD_ADD:
1488 case R_SPARC_TLS_GD_CALL:
1489 checked_tlsgd = TRUE;
1490 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1491 break;
1492 }
1493
1494 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1495 switch (r_type)
1496 {
1497 case R_SPARC_TLS_LDM_HI22:
1498 case R_SPARC_TLS_LDM_LO10:
1499 htab->tls_ldm_got.refcount += 1;
1500 break;
1501
1502 case R_SPARC_TLS_LE_HIX22:
1503 case R_SPARC_TLS_LE_LOX10:
1504 if (info->shared)
1505 goto r_sparc_plt32;
1506 break;
1507
1508 case R_SPARC_TLS_IE_HI22:
1509 case R_SPARC_TLS_IE_LO10:
1510 if (info->shared)
1511 info->flags |= DF_STATIC_TLS;
1512 /* Fall through */
1513
1514 case R_SPARC_GOT10:
1515 case R_SPARC_GOT13:
1516 case R_SPARC_GOT22:
1517 case R_SPARC_GOTDATA_HIX22:
1518 case R_SPARC_GOTDATA_LOX10:
1519 case R_SPARC_GOTDATA_OP_HIX22:
1520 case R_SPARC_GOTDATA_OP_LOX10:
1521 case R_SPARC_TLS_GD_HI22:
1522 case R_SPARC_TLS_GD_LO10:
1523 /* This symbol requires a global offset table entry. */
1524 {
1525 int tls_type, old_tls_type;
1526
1527 switch (r_type)
1528 {
1529 default:
1530 case R_SPARC_GOT10:
1531 case R_SPARC_GOT13:
1532 case R_SPARC_GOT22:
1533 case R_SPARC_GOTDATA_OP_HIX22:
1534 case R_SPARC_GOTDATA_OP_LOX10:
1535 tls_type = GOT_NORMAL;
1536 break;
1537 case R_SPARC_TLS_GD_HI22:
1538 case R_SPARC_TLS_GD_LO10:
1539 tls_type = GOT_TLS_GD;
1540 break;
1541 case R_SPARC_TLS_IE_HI22:
1542 case R_SPARC_TLS_IE_LO10:
1543 tls_type = GOT_TLS_IE;
1544 break;
1545 }
1546
1547 if (h != NULL)
1548 {
1549 h->got.refcount += 1;
1550 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1551 }
1552 else
1553 {
1554 bfd_signed_vma *local_got_refcounts;
1555
1556 /* This is a global offset table entry for a local symbol. */
1557 local_got_refcounts = elf_local_got_refcounts (abfd);
1558 if (local_got_refcounts == NULL)
1559 {
1560 bfd_size_type size;
1561
1562 size = symtab_hdr->sh_info;
1563 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1564 local_got_refcounts = ((bfd_signed_vma *)
1565 bfd_zalloc (abfd, size));
1566 if (local_got_refcounts == NULL)
1567 return FALSE;
1568 elf_local_got_refcounts (abfd) = local_got_refcounts;
1569 _bfd_sparc_elf_local_got_tls_type (abfd)
1570 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1571 }
1572 switch (r_type)
1573 {
1574 case R_SPARC_GOTDATA_OP_HIX22:
1575 case R_SPARC_GOTDATA_OP_LOX10:
1576 break;
1577
1578 default:
1579 local_got_refcounts[r_symndx] += 1;
1580 break;
1581 }
1582 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1583 }
1584
1585 /* If a TLS symbol is accessed using IE at least once,
1586 there is no point to use dynamic model for it. */
1587 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1588 && (old_tls_type != GOT_TLS_GD
1589 || tls_type != GOT_TLS_IE))
1590 {
1591 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1592 tls_type = old_tls_type;
1593 else
1594 {
1595 (*_bfd_error_handler)
1596 (_("%B: `%s' accessed both as normal and thread local symbol"),
1597 abfd, h ? h->root.root.string : "<local>");
1598 return FALSE;
1599 }
1600 }
1601
1602 if (old_tls_type != tls_type)
1603 {
1604 if (h != NULL)
1605 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1606 else
1607 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1608 }
1609 }
1610
1611 if (htab->elf.sgot == NULL)
1612 {
1613 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1614 return FALSE;
1615 }
1616 break;
1617
1618 case R_SPARC_TLS_GD_CALL:
1619 case R_SPARC_TLS_LDM_CALL:
1620 if (info->shared)
1621 {
1622 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1623 __tls_get_addr. */
1624 struct bfd_link_hash_entry *bh = NULL;
1625 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1626 "__tls_get_addr", 0,
1627 bfd_und_section_ptr, 0,
1628 NULL, FALSE, FALSE,
1629 &bh))
1630 return FALSE;
1631 h = (struct elf_link_hash_entry *) bh;
1632 }
1633 else
1634 break;
1635 /* Fall through */
1636
1637 case R_SPARC_PLT32:
1638 case R_SPARC_WPLT30:
1639 case R_SPARC_HIPLT22:
1640 case R_SPARC_LOPLT10:
1641 case R_SPARC_PCPLT32:
1642 case R_SPARC_PCPLT22:
1643 case R_SPARC_PCPLT10:
1644 case R_SPARC_PLT64:
1645 /* This symbol requires a procedure linkage table entry. We
1646 actually build the entry in adjust_dynamic_symbol,
1647 because this might be a case of linking PIC code without
1648 linking in any dynamic objects, in which case we don't
1649 need to generate a procedure linkage table after all. */
1650
1651 if (h == NULL)
1652 {
1653 if (! ABI_64_P (abfd))
1654 {
1655 /* The Solaris native assembler will generate a WPLT30
1656 reloc for a local symbol if you assemble a call from
1657 one section to another when using -K pic. We treat
1658 it as WDISP30. */
1659 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1660 goto r_sparc_plt32;
1661 break;
1662 }
1663 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1664 else if (r_type == R_SPARC_WPLT30)
1665 break;
1666
1667 /* It does not make sense to have a procedure linkage
1668 table entry for a local symbol. */
1669 bfd_set_error (bfd_error_bad_value);
1670 return FALSE;
1671 }
1672
1673 h->needs_plt = 1;
1674
1675 {
1676 int this_r_type;
1677
1678 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1679 if (this_r_type == R_SPARC_PLT32
1680 || this_r_type == R_SPARC_PLT64)
1681 goto r_sparc_plt32;
1682 }
1683 h->plt.refcount += 1;
1684 break;
1685
1686 case R_SPARC_PC10:
1687 case R_SPARC_PC22:
1688 case R_SPARC_PC_HH22:
1689 case R_SPARC_PC_HM10:
1690 case R_SPARC_PC_LM22:
1691 if (h != NULL)
1692 h->non_got_ref = 1;
1693
1694 if (h != NULL
1695 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1696 break;
1697 /* Fall through. */
1698
1699 case R_SPARC_DISP8:
1700 case R_SPARC_DISP16:
1701 case R_SPARC_DISP32:
1702 case R_SPARC_DISP64:
1703 case R_SPARC_WDISP30:
1704 case R_SPARC_WDISP22:
1705 case R_SPARC_WDISP19:
1706 case R_SPARC_WDISP16:
1707 case R_SPARC_WDISP10:
1708 case R_SPARC_8:
1709 case R_SPARC_16:
1710 case R_SPARC_32:
1711 case R_SPARC_HI22:
1712 case R_SPARC_22:
1713 case R_SPARC_13:
1714 case R_SPARC_LO10:
1715 case R_SPARC_UA16:
1716 case R_SPARC_UA32:
1717 case R_SPARC_10:
1718 case R_SPARC_11:
1719 case R_SPARC_64:
1720 case R_SPARC_OLO10:
1721 case R_SPARC_HH22:
1722 case R_SPARC_HM10:
1723 case R_SPARC_LM22:
1724 case R_SPARC_7:
1725 case R_SPARC_5:
1726 case R_SPARC_6:
1727 case R_SPARC_HIX22:
1728 case R_SPARC_LOX10:
1729 case R_SPARC_H44:
1730 case R_SPARC_M44:
1731 case R_SPARC_L44:
1732 case R_SPARC_H34:
1733 case R_SPARC_UA64:
1734 if (h != NULL)
1735 h->non_got_ref = 1;
1736
1737 r_sparc_plt32:
1738 if (h != NULL && !info->shared)
1739 {
1740 /* We may need a .plt entry if the function this reloc
1741 refers to is in a shared lib. */
1742 h->plt.refcount += 1;
1743 }
1744
1745 /* If we are creating a shared library, and this is a reloc
1746 against a global symbol, or a non PC relative reloc
1747 against a local symbol, then we need to copy the reloc
1748 into the shared library. However, if we are linking with
1749 -Bsymbolic, we do not need to copy a reloc against a
1750 global symbol which is defined in an object we are
1751 including in the link (i.e., DEF_REGULAR is set). At
1752 this point we have not seen all the input files, so it is
1753 possible that DEF_REGULAR is not set now but will be set
1754 later (it is never cleared). In case of a weak definition,
1755 DEF_REGULAR may be cleared later by a strong definition in
1756 a shared library. We account for that possibility below by
1757 storing information in the relocs_copied field of the hash
1758 table entry. A similar situation occurs when creating
1759 shared libraries and symbol visibility changes render the
1760 symbol local.
1761
1762 If on the other hand, we are creating an executable, we
1763 may need to keep relocations for symbols satisfied by a
1764 dynamic library if we manage to avoid copy relocs for the
1765 symbol. */
1766 if ((info->shared
1767 && (sec->flags & SEC_ALLOC) != 0
1768 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1769 || (h != NULL
1770 && (! SYMBOLIC_BIND (info, h)
1771 || h->root.type == bfd_link_hash_defweak
1772 || !h->def_regular))))
1773 || (!info->shared
1774 && (sec->flags & SEC_ALLOC) != 0
1775 && h != NULL
1776 && (h->root.type == bfd_link_hash_defweak
1777 || !h->def_regular))
1778 || (!info->shared
1779 && h != NULL
1780 && h->type == STT_GNU_IFUNC))
1781 {
1782 struct _bfd_sparc_elf_dyn_relocs *p;
1783 struct _bfd_sparc_elf_dyn_relocs **head;
1784
1785 /* When creating a shared object, we must copy these
1786 relocs into the output file. We create a reloc
1787 section in dynobj and make room for the reloc. */
1788 if (sreloc == NULL)
1789 {
1790 sreloc = _bfd_elf_make_dynamic_reloc_section
1791 (sec, htab->elf.dynobj, htab->word_align_power,
1792 abfd, /*rela?*/ TRUE);
1793
1794 if (sreloc == NULL)
1795 return FALSE;
1796 }
1797
1798 /* If this is a global symbol, we count the number of
1799 relocations we need for this symbol. */
1800 if (h != NULL)
1801 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1802 else
1803 {
1804 /* Track dynamic relocs needed for local syms too.
1805 We really need local syms available to do this
1806 easily. Oh well. */
1807 asection *s;
1808 void *vpp;
1809
1810 BFD_ASSERT (isym != NULL);
1811 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1812 if (s == NULL)
1813 s = sec;
1814
1815 vpp = &elf_section_data (s)->local_dynrel;
1816 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1817 }
1818
1819 p = *head;
1820 if (p == NULL || p->sec != sec)
1821 {
1822 bfd_size_type amt = sizeof *p;
1823 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1824 bfd_alloc (htab->elf.dynobj, amt));
1825 if (p == NULL)
1826 return FALSE;
1827 p->next = *head;
1828 *head = p;
1829 p->sec = sec;
1830 p->count = 0;
1831 p->pc_count = 0;
1832 }
1833
1834 p->count += 1;
1835 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1836 p->pc_count += 1;
1837 }
1838
1839 break;
1840
1841 case R_SPARC_GNU_VTINHERIT:
1842 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1843 return FALSE;
1844 break;
1845
1846 case R_SPARC_GNU_VTENTRY:
1847 BFD_ASSERT (h != NULL);
1848 if (h != NULL
1849 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1850 return FALSE;
1851 break;
1852
1853 case R_SPARC_REGISTER:
1854 /* Nothing to do. */
1855 break;
1856
1857 default:
1858 break;
1859 }
1860 }
1861
1862 return TRUE;
1863 }
1864 \f
1865 asection *
1866 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1867 struct bfd_link_info *info,
1868 Elf_Internal_Rela *rel,
1869 struct elf_link_hash_entry *h,
1870 Elf_Internal_Sym *sym)
1871 {
1872 if (h != NULL)
1873 switch (SPARC_ELF_R_TYPE (rel->r_info))
1874 {
1875 case R_SPARC_GNU_VTINHERIT:
1876 case R_SPARC_GNU_VTENTRY:
1877 return NULL;
1878 }
1879
1880 /* FIXME: The test here, in check_relocs and in relocate_section
1881 dealing with TLS optimization, ought to be !info->executable. */
1882 if (info->shared)
1883 {
1884 switch (SPARC_ELF_R_TYPE (rel->r_info))
1885 {
1886 case R_SPARC_TLS_GD_CALL:
1887 case R_SPARC_TLS_LDM_CALL:
1888 /* This reloc implicitly references __tls_get_addr. We know
1889 another reloc will reference the same symbol as the one
1890 on this reloc, so the real symbol and section will be
1891 gc marked when processing the other reloc. That lets
1892 us handle __tls_get_addr here. */
1893 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1894 FALSE, FALSE, TRUE);
1895 BFD_ASSERT (h != NULL);
1896 h->mark = 1;
1897 if (h->u.weakdef != NULL)
1898 h->u.weakdef->mark = 1;
1899 sym = NULL;
1900 }
1901 }
1902
1903 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1904 }
1905
1906 static Elf_Internal_Rela *
1907 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1908 Elf_Internal_Rela *relend,
1909 bfd_vma offset)
1910 {
1911 while (rel < relend)
1912 {
1913 if (rel->r_offset == offset)
1914 return rel;
1915 rel++;
1916 }
1917 return NULL;
1918 }
1919
1920 /* Update the got entry reference counts for the section being removed. */
1921 bfd_boolean
1922 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1923 asection *sec, const Elf_Internal_Rela *relocs)
1924 {
1925 struct _bfd_sparc_elf_link_hash_table *htab;
1926 Elf_Internal_Shdr *symtab_hdr;
1927 struct elf_link_hash_entry **sym_hashes;
1928 bfd_signed_vma *local_got_refcounts;
1929 const Elf_Internal_Rela *rel, *relend;
1930
1931 if (info->relocatable)
1932 return TRUE;
1933
1934 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1935
1936 elf_section_data (sec)->local_dynrel = NULL;
1937
1938 htab = _bfd_sparc_elf_hash_table (info);
1939 BFD_ASSERT (htab != NULL);
1940 symtab_hdr = &elf_symtab_hdr (abfd);
1941 sym_hashes = elf_sym_hashes (abfd);
1942 local_got_refcounts = elf_local_got_refcounts (abfd);
1943
1944 relend = relocs + sec->reloc_count;
1945 for (rel = relocs; rel < relend; rel++)
1946 {
1947 unsigned long r_symndx;
1948 unsigned int r_type;
1949 struct elf_link_hash_entry *h = NULL;
1950
1951 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1952 if (r_symndx >= symtab_hdr->sh_info)
1953 {
1954 struct _bfd_sparc_elf_link_hash_entry *eh;
1955 struct _bfd_sparc_elf_dyn_relocs **pp;
1956 struct _bfd_sparc_elf_dyn_relocs *p;
1957
1958 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1959 while (h->root.type == bfd_link_hash_indirect
1960 || h->root.type == bfd_link_hash_warning)
1961 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1962 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1963 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1964 if (p->sec == sec)
1965 {
1966 /* Everything must go for SEC. */
1967 *pp = p->next;
1968 break;
1969 }
1970 }
1971
1972 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1973 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1974 switch (r_type)
1975 {
1976 case R_SPARC_TLS_LDM_HI22:
1977 case R_SPARC_TLS_LDM_LO10:
1978 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1979 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1980 break;
1981
1982 case R_SPARC_TLS_GD_HI22:
1983 case R_SPARC_TLS_GD_LO10:
1984 case R_SPARC_TLS_IE_HI22:
1985 case R_SPARC_TLS_IE_LO10:
1986 case R_SPARC_GOT10:
1987 case R_SPARC_GOT13:
1988 case R_SPARC_GOT22:
1989 case R_SPARC_GOTDATA_HIX22:
1990 case R_SPARC_GOTDATA_LOX10:
1991 case R_SPARC_GOTDATA_OP_HIX22:
1992 case R_SPARC_GOTDATA_OP_LOX10:
1993 if (h != NULL)
1994 {
1995 if (h->got.refcount > 0)
1996 h->got.refcount--;
1997 }
1998 else
1999 {
2000 switch (r_type)
2001 {
2002 case R_SPARC_GOTDATA_OP_HIX22:
2003 case R_SPARC_GOTDATA_OP_LOX10:
2004 break;
2005
2006 default:
2007 if (local_got_refcounts[r_symndx] > 0)
2008 local_got_refcounts[r_symndx]--;
2009 break;
2010 }
2011 }
2012 break;
2013
2014 case R_SPARC_PC10:
2015 case R_SPARC_PC22:
2016 case R_SPARC_PC_HH22:
2017 case R_SPARC_PC_HM10:
2018 case R_SPARC_PC_LM22:
2019 if (h != NULL
2020 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2021 break;
2022 /* Fall through. */
2023
2024 case R_SPARC_DISP8:
2025 case R_SPARC_DISP16:
2026 case R_SPARC_DISP32:
2027 case R_SPARC_DISP64:
2028 case R_SPARC_WDISP30:
2029 case R_SPARC_WDISP22:
2030 case R_SPARC_WDISP19:
2031 case R_SPARC_WDISP16:
2032 case R_SPARC_WDISP10:
2033 case R_SPARC_8:
2034 case R_SPARC_16:
2035 case R_SPARC_32:
2036 case R_SPARC_HI22:
2037 case R_SPARC_22:
2038 case R_SPARC_13:
2039 case R_SPARC_LO10:
2040 case R_SPARC_UA16:
2041 case R_SPARC_UA32:
2042 case R_SPARC_PLT32:
2043 case R_SPARC_10:
2044 case R_SPARC_11:
2045 case R_SPARC_64:
2046 case R_SPARC_OLO10:
2047 case R_SPARC_HH22:
2048 case R_SPARC_HM10:
2049 case R_SPARC_LM22:
2050 case R_SPARC_7:
2051 case R_SPARC_5:
2052 case R_SPARC_6:
2053 case R_SPARC_HIX22:
2054 case R_SPARC_LOX10:
2055 case R_SPARC_H44:
2056 case R_SPARC_M44:
2057 case R_SPARC_L44:
2058 case R_SPARC_H34:
2059 case R_SPARC_UA64:
2060 if (info->shared)
2061 break;
2062 /* Fall through. */
2063
2064 case R_SPARC_WPLT30:
2065 if (h != NULL)
2066 {
2067 if (h->plt.refcount > 0)
2068 h->plt.refcount--;
2069 }
2070 break;
2071
2072 default:
2073 break;
2074 }
2075 }
2076
2077 return TRUE;
2078 }
2079
2080 /* Adjust a symbol defined by a dynamic object and referenced by a
2081 regular object. The current definition is in some section of the
2082 dynamic object, but we're not including those sections. We have to
2083 change the definition to something the rest of the link can
2084 understand. */
2085
2086 bfd_boolean
2087 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2088 struct elf_link_hash_entry *h)
2089 {
2090 struct _bfd_sparc_elf_link_hash_table *htab;
2091 struct _bfd_sparc_elf_link_hash_entry * eh;
2092 struct _bfd_sparc_elf_dyn_relocs *p;
2093 asection *s;
2094
2095 htab = _bfd_sparc_elf_hash_table (info);
2096 BFD_ASSERT (htab != NULL);
2097
2098 /* Make sure we know what is going on here. */
2099 BFD_ASSERT (htab->elf.dynobj != NULL
2100 && (h->needs_plt
2101 || h->type == STT_GNU_IFUNC
2102 || h->u.weakdef != NULL
2103 || (h->def_dynamic
2104 && h->ref_regular
2105 && !h->def_regular)));
2106
2107 /* If this is a function, put it in the procedure linkage table. We
2108 will fill in the contents of the procedure linkage table later
2109 (although we could actually do it here). The STT_NOTYPE
2110 condition is a hack specifically for the Oracle libraries
2111 delivered for Solaris; for some inexplicable reason, they define
2112 some of their functions as STT_NOTYPE when they really should be
2113 STT_FUNC. */
2114 if (h->type == STT_FUNC
2115 || h->type == STT_GNU_IFUNC
2116 || h->needs_plt
2117 || (h->type == STT_NOTYPE
2118 && (h->root.type == bfd_link_hash_defined
2119 || h->root.type == bfd_link_hash_defweak)
2120 && (h->root.u.def.section->flags & SEC_CODE) != 0))
2121 {
2122 if (h->plt.refcount <= 0
2123 || (h->type != STT_GNU_IFUNC
2124 && (SYMBOL_CALLS_LOCAL (info, h)
2125 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2126 && h->root.type == bfd_link_hash_undefweak))))
2127 {
2128 /* This case can occur if we saw a WPLT30 reloc in an input
2129 file, but the symbol was never referred to by a dynamic
2130 object, or if all references were garbage collected. In
2131 such a case, we don't actually need to build a procedure
2132 linkage table, and we can just do a WDISP30 reloc instead. */
2133 h->plt.offset = (bfd_vma) -1;
2134 h->needs_plt = 0;
2135 }
2136
2137 return TRUE;
2138 }
2139 else
2140 h->plt.offset = (bfd_vma) -1;
2141
2142 /* If this is a weak symbol, and there is a real definition, the
2143 processor independent code will have arranged for us to see the
2144 real definition first, and we can just use the same value. */
2145 if (h->u.weakdef != NULL)
2146 {
2147 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2148 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2149 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2150 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2151 return TRUE;
2152 }
2153
2154 /* This is a reference to a symbol defined by a dynamic object which
2155 is not a function. */
2156
2157 /* If we are creating a shared library, we must presume that the
2158 only references to the symbol are via the global offset table.
2159 For such cases we need not do anything here; the relocations will
2160 be handled correctly by relocate_section. */
2161 if (info->shared)
2162 return TRUE;
2163
2164 /* If there are no references to this symbol that do not use the
2165 GOT, we don't need to generate a copy reloc. */
2166 if (!h->non_got_ref)
2167 return TRUE;
2168
2169 /* If -z nocopyreloc was given, we won't generate them either. */
2170 if (info->nocopyreloc)
2171 {
2172 h->non_got_ref = 0;
2173 return TRUE;
2174 }
2175
2176 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2177 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2178 {
2179 s = p->sec->output_section;
2180 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2181 break;
2182 }
2183
2184 /* If we didn't find any dynamic relocs in read-only sections, then
2185 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2186 if (p == NULL)
2187 {
2188 h->non_got_ref = 0;
2189 return TRUE;
2190 }
2191
2192 /* We must allocate the symbol in our .dynbss section, which will
2193 become part of the .bss section of the executable. There will be
2194 an entry for this symbol in the .dynsym section. The dynamic
2195 object will contain position independent code, so all references
2196 from the dynamic object to this symbol will go through the global
2197 offset table. The dynamic linker will use the .dynsym entry to
2198 determine the address it must put in the global offset table, so
2199 both the dynamic object and the regular object will refer to the
2200 same memory location for the variable. */
2201
2202 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2203 to copy the initial value out of the dynamic object and into the
2204 runtime process image. We need to remember the offset into the
2205 .rel.bss section we are going to use. */
2206 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2207 {
2208 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
2209 h->needs_copy = 1;
2210 }
2211
2212 s = htab->sdynbss;
2213
2214 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2215 }
2216
2217 /* Allocate space in .plt, .got and associated reloc sections for
2218 dynamic relocs. */
2219
2220 static bfd_boolean
2221 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2222 {
2223 struct bfd_link_info *info;
2224 struct _bfd_sparc_elf_link_hash_table *htab;
2225 struct _bfd_sparc_elf_link_hash_entry *eh;
2226 struct _bfd_sparc_elf_dyn_relocs *p;
2227
2228 if (h->root.type == bfd_link_hash_indirect)
2229 return TRUE;
2230
2231 info = (struct bfd_link_info *) inf;
2232 htab = _bfd_sparc_elf_hash_table (info);
2233 BFD_ASSERT (htab != NULL);
2234
2235 if ((htab->elf.dynamic_sections_created
2236 && h->plt.refcount > 0)
2237 || (h->type == STT_GNU_IFUNC
2238 && h->def_regular
2239 && h->ref_regular))
2240 {
2241 /* Make sure this symbol is output as a dynamic symbol.
2242 Undefined weak syms won't yet be marked as dynamic. */
2243 if (h->dynindx == -1
2244 && !h->forced_local)
2245 {
2246 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2247 return FALSE;
2248 }
2249
2250 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)
2251 || (h->type == STT_GNU_IFUNC
2252 && h->def_regular))
2253 {
2254 asection *s = htab->elf.splt;
2255
2256 if (s == NULL)
2257 s = htab->elf.iplt;
2258
2259 /* Allocate room for the header. */
2260 if (s->size == 0)
2261 {
2262 s->size = htab->plt_header_size;
2263
2264 /* Allocate space for the .rela.plt.unloaded relocations. */
2265 if (htab->is_vxworks && !info->shared)
2266 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2267 }
2268
2269 /* The procedure linkage table size is bounded by the magnitude
2270 of the offset we can describe in the entry. */
2271 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2272 (((bfd_vma)1 << 31) << 1) : 0x400000))
2273 {
2274 bfd_set_error (bfd_error_bad_value);
2275 return FALSE;
2276 }
2277
2278 if (SPARC_ELF_WORD_BYTES(htab) == 8
2279 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2280 {
2281 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2282
2283
2284 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2285
2286 h->plt.offset = (s->size - (off * 8));
2287 }
2288 else
2289 h->plt.offset = s->size;
2290
2291 /* If this symbol is not defined in a regular file, and we are
2292 not generating a shared library, then set the symbol to this
2293 location in the .plt. This is required to make function
2294 pointers compare as equal between the normal executable and
2295 the shared library. */
2296 if (! info->shared
2297 && !h->def_regular)
2298 {
2299 h->root.u.def.section = s;
2300 h->root.u.def.value = h->plt.offset;
2301 }
2302
2303 /* Make room for this entry. */
2304 s->size += htab->plt_entry_size;
2305
2306 /* We also need to make an entry in the .rela.plt section. */
2307 if (s == htab->elf.splt)
2308 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2309 else
2310 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2311
2312 if (htab->is_vxworks)
2313 {
2314 /* Allocate space for the .got.plt entry. */
2315 htab->elf.sgotplt->size += 4;
2316
2317 /* ...and for the .rela.plt.unloaded relocations. */
2318 if (!info->shared)
2319 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2320 }
2321 }
2322 else
2323 {
2324 h->plt.offset = (bfd_vma) -1;
2325 h->needs_plt = 0;
2326 }
2327 }
2328 else
2329 {
2330 h->plt.offset = (bfd_vma) -1;
2331 h->needs_plt = 0;
2332 }
2333
2334 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2335 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2336 if (h->got.refcount > 0
2337 && !info->shared
2338 && h->dynindx == -1
2339 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2340 h->got.offset = (bfd_vma) -1;
2341 else if (h->got.refcount > 0)
2342 {
2343 asection *s;
2344 bfd_boolean dyn;
2345 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2346
2347 /* Make sure this symbol is output as a dynamic symbol.
2348 Undefined weak syms won't yet be marked as dynamic. */
2349 if (h->dynindx == -1
2350 && !h->forced_local)
2351 {
2352 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2353 return FALSE;
2354 }
2355
2356 s = htab->elf.sgot;
2357 h->got.offset = s->size;
2358 s->size += SPARC_ELF_WORD_BYTES (htab);
2359 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2360 if (tls_type == GOT_TLS_GD)
2361 s->size += SPARC_ELF_WORD_BYTES (htab);
2362 dyn = htab->elf.dynamic_sections_created;
2363 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2364 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2365 global. */
2366 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2367 || tls_type == GOT_TLS_IE
2368 || h->type == STT_GNU_IFUNC)
2369 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2370 else if (tls_type == GOT_TLS_GD)
2371 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2372 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2373 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2374 }
2375 else
2376 h->got.offset = (bfd_vma) -1;
2377
2378 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2379 if (eh->dyn_relocs == NULL)
2380 return TRUE;
2381
2382 /* In the shared -Bsymbolic case, discard space allocated for
2383 dynamic pc-relative relocs against symbols which turn out to be
2384 defined in regular objects. For the normal shared case, discard
2385 space for pc-relative relocs that have become local due to symbol
2386 visibility changes. */
2387
2388 if (info->shared)
2389 {
2390 if (SYMBOL_CALLS_LOCAL (info, h))
2391 {
2392 struct _bfd_sparc_elf_dyn_relocs **pp;
2393
2394 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2395 {
2396 p->count -= p->pc_count;
2397 p->pc_count = 0;
2398 if (p->count == 0)
2399 *pp = p->next;
2400 else
2401 pp = &p->next;
2402 }
2403 }
2404
2405 if (htab->is_vxworks)
2406 {
2407 struct _bfd_sparc_elf_dyn_relocs **pp;
2408
2409 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2410 {
2411 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2412 *pp = p->next;
2413 else
2414 pp = &p->next;
2415 }
2416 }
2417
2418 /* Also discard relocs on undefined weak syms with non-default
2419 visibility. */
2420 if (eh->dyn_relocs != NULL
2421 && h->root.type == bfd_link_hash_undefweak)
2422 {
2423 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2424 eh->dyn_relocs = NULL;
2425
2426 /* Make sure undefined weak symbols are output as a dynamic
2427 symbol in PIEs. */
2428 else if (h->dynindx == -1
2429 && !h->forced_local)
2430 {
2431 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2432 return FALSE;
2433 }
2434 }
2435 }
2436 else
2437 {
2438 /* For the non-shared case, discard space for relocs against
2439 symbols which turn out to need copy relocs or are not
2440 dynamic. */
2441
2442 if (!h->non_got_ref
2443 && ((h->def_dynamic
2444 && !h->def_regular)
2445 || (htab->elf.dynamic_sections_created
2446 && (h->root.type == bfd_link_hash_undefweak
2447 || h->root.type == bfd_link_hash_undefined))))
2448 {
2449 /* Make sure this symbol is output as a dynamic symbol.
2450 Undefined weak syms won't yet be marked as dynamic. */
2451 if (h->dynindx == -1
2452 && !h->forced_local)
2453 {
2454 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2455 return FALSE;
2456 }
2457
2458 /* If that succeeded, we know we'll be keeping all the
2459 relocs. */
2460 if (h->dynindx != -1)
2461 goto keep;
2462 }
2463
2464 eh->dyn_relocs = NULL;
2465
2466 keep: ;
2467 }
2468
2469 /* Finally, allocate space. */
2470 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2471 {
2472 asection *sreloc = elf_section_data (p->sec)->sreloc;
2473 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2474 }
2475
2476 return TRUE;
2477 }
2478
2479 /* Allocate space in .plt, .got and associated reloc sections for
2480 local dynamic relocs. */
2481
2482 static bfd_boolean
2483 allocate_local_dynrelocs (void **slot, void *inf)
2484 {
2485 struct elf_link_hash_entry *h
2486 = (struct elf_link_hash_entry *) *slot;
2487
2488 if (h->type != STT_GNU_IFUNC
2489 || !h->def_regular
2490 || !h->ref_regular
2491 || !h->forced_local
2492 || h->root.type != bfd_link_hash_defined)
2493 abort ();
2494
2495 return allocate_dynrelocs (h, inf);
2496 }
2497
2498 /* Find any dynamic relocs that apply to read-only sections. */
2499
2500 static bfd_boolean
2501 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2502 {
2503 struct _bfd_sparc_elf_link_hash_entry *eh;
2504 struct _bfd_sparc_elf_dyn_relocs *p;
2505
2506 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2507 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2508 {
2509 asection *s = p->sec->output_section;
2510
2511 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2512 {
2513 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2514
2515 info->flags |= DF_TEXTREL;
2516
2517 /* Not an error, just cut short the traversal. */
2518 return FALSE;
2519 }
2520 }
2521 return TRUE;
2522 }
2523
2524 /* Return true if the dynamic symbol for a given section should be
2525 omitted when creating a shared library. */
2526
2527 bfd_boolean
2528 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2529 struct bfd_link_info *info,
2530 asection *p)
2531 {
2532 /* We keep the .got section symbol so that explicit relocations
2533 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2534 can be turned into relocations against the .got symbol. */
2535 if (strcmp (p->name, ".got") == 0)
2536 return FALSE;
2537
2538 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2539 }
2540
2541 /* Set the sizes of the dynamic sections. */
2542
2543 bfd_boolean
2544 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2545 struct bfd_link_info *info)
2546 {
2547 struct _bfd_sparc_elf_link_hash_table *htab;
2548 bfd *dynobj;
2549 asection *s;
2550 bfd *ibfd;
2551
2552 htab = _bfd_sparc_elf_hash_table (info);
2553 BFD_ASSERT (htab != NULL);
2554 dynobj = htab->elf.dynobj;
2555 BFD_ASSERT (dynobj != NULL);
2556
2557 if (elf_hash_table (info)->dynamic_sections_created)
2558 {
2559 /* Set the contents of the .interp section to the interpreter. */
2560 if (info->executable)
2561 {
2562 s = bfd_get_linker_section (dynobj, ".interp");
2563 BFD_ASSERT (s != NULL);
2564 s->size = htab->dynamic_interpreter_size;
2565 s->contents = (unsigned char *) htab->dynamic_interpreter;
2566 }
2567 }
2568
2569 /* Set up .got offsets for local syms, and space for local dynamic
2570 relocs. */
2571 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2572 {
2573 bfd_signed_vma *local_got;
2574 bfd_signed_vma *end_local_got;
2575 char *local_tls_type;
2576 bfd_size_type locsymcount;
2577 Elf_Internal_Shdr *symtab_hdr;
2578 asection *srel;
2579
2580 if (! is_sparc_elf (ibfd))
2581 continue;
2582
2583 for (s = ibfd->sections; s != NULL; s = s->next)
2584 {
2585 struct _bfd_sparc_elf_dyn_relocs *p;
2586
2587 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2588 {
2589 if (!bfd_is_abs_section (p->sec)
2590 && bfd_is_abs_section (p->sec->output_section))
2591 {
2592 /* Input section has been discarded, either because
2593 it is a copy of a linkonce section or due to
2594 linker script /DISCARD/, so we'll be discarding
2595 the relocs too. */
2596 }
2597 else if (htab->is_vxworks
2598 && strcmp (p->sec->output_section->name,
2599 ".tls_vars") == 0)
2600 {
2601 /* Relocations in vxworks .tls_vars sections are
2602 handled specially by the loader. */
2603 }
2604 else if (p->count != 0)
2605 {
2606 srel = elf_section_data (p->sec)->sreloc;
2607 if (!htab->elf.dynamic_sections_created)
2608 srel = htab->elf.irelplt;
2609 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2610 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2611 info->flags |= DF_TEXTREL;
2612 }
2613 }
2614 }
2615
2616 local_got = elf_local_got_refcounts (ibfd);
2617 if (!local_got)
2618 continue;
2619
2620 symtab_hdr = &elf_symtab_hdr (ibfd);
2621 locsymcount = symtab_hdr->sh_info;
2622 end_local_got = local_got + locsymcount;
2623 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2624 s = htab->elf.sgot;
2625 srel = htab->elf.srelgot;
2626 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2627 {
2628 if (*local_got > 0)
2629 {
2630 *local_got = s->size;
2631 s->size += SPARC_ELF_WORD_BYTES (htab);
2632 if (*local_tls_type == GOT_TLS_GD)
2633 s->size += SPARC_ELF_WORD_BYTES (htab);
2634 if (info->shared
2635 || *local_tls_type == GOT_TLS_GD
2636 || *local_tls_type == GOT_TLS_IE)
2637 srel->size += SPARC_ELF_RELA_BYTES (htab);
2638 }
2639 else
2640 *local_got = (bfd_vma) -1;
2641 }
2642 }
2643
2644 if (htab->tls_ldm_got.refcount > 0)
2645 {
2646 /* Allocate 2 got entries and 1 dynamic reloc for
2647 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2648 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2649 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2650 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2651 }
2652 else
2653 htab->tls_ldm_got.offset = -1;
2654
2655 /* Allocate global sym .plt and .got entries, and space for global
2656 sym dynamic relocs. */
2657 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2658
2659 /* Allocate .plt and .got entries, and space for local symbols. */
2660 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2661
2662 if (! ABI_64_P (output_bfd)
2663 && !htab->is_vxworks
2664 && elf_hash_table (info)->dynamic_sections_created)
2665 {
2666 /* Make space for the trailing nop in .plt. */
2667 if (htab->elf.splt->size > 0)
2668 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2669
2670 /* If the .got section is more than 0x1000 bytes, we add
2671 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2672 bit relocations have a greater chance of working.
2673
2674 FIXME: Make this optimization work for 64-bit too. */
2675 if (htab->elf.sgot->size >= 0x1000
2676 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2677 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2678 }
2679
2680 /* The check_relocs and adjust_dynamic_symbol entry points have
2681 determined the sizes of the various dynamic sections. Allocate
2682 memory for them. */
2683 for (s = dynobj->sections; s != NULL; s = s->next)
2684 {
2685 if ((s->flags & SEC_LINKER_CREATED) == 0)
2686 continue;
2687
2688 if (s == htab->elf.splt
2689 || s == htab->elf.sgot
2690 || s == htab->sdynbss
2691 || s == htab->elf.iplt
2692 || s == htab->elf.sgotplt)
2693 {
2694 /* Strip this section if we don't need it; see the
2695 comment below. */
2696 }
2697 else if (CONST_STRNEQ (s->name, ".rela"))
2698 {
2699 if (s->size != 0)
2700 {
2701 /* We use the reloc_count field as a counter if we need
2702 to copy relocs into the output file. */
2703 s->reloc_count = 0;
2704 }
2705 }
2706 else
2707 {
2708 /* It's not one of our sections. */
2709 continue;
2710 }
2711
2712 if (s->size == 0)
2713 {
2714 /* If we don't need this section, strip it from the
2715 output file. This is mostly to handle .rela.bss and
2716 .rela.plt. We must create both sections in
2717 create_dynamic_sections, because they must be created
2718 before the linker maps input sections to output
2719 sections. The linker does that before
2720 adjust_dynamic_symbol is called, and it is that
2721 function which decides whether anything needs to go
2722 into these sections. */
2723 s->flags |= SEC_EXCLUDE;
2724 continue;
2725 }
2726
2727 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2728 continue;
2729
2730 /* Allocate memory for the section contents. Zero the memory
2731 for the benefit of .rela.plt, which has 4 unused entries
2732 at the beginning, and we don't want garbage. */
2733 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2734 if (s->contents == NULL)
2735 return FALSE;
2736 }
2737
2738 if (elf_hash_table (info)->dynamic_sections_created)
2739 {
2740 /* Add some entries to the .dynamic section. We fill in the
2741 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2742 must add the entries now so that we get the correct size for
2743 the .dynamic section. The DT_DEBUG entry is filled in by the
2744 dynamic linker and used by the debugger. */
2745 #define add_dynamic_entry(TAG, VAL) \
2746 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2747
2748 if (info->executable)
2749 {
2750 if (!add_dynamic_entry (DT_DEBUG, 0))
2751 return FALSE;
2752 }
2753
2754 if (htab->elf.srelplt->size != 0)
2755 {
2756 if (!add_dynamic_entry (DT_PLTGOT, 0)
2757 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2758 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2759 || !add_dynamic_entry (DT_JMPREL, 0))
2760 return FALSE;
2761 }
2762
2763 if (!add_dynamic_entry (DT_RELA, 0)
2764 || !add_dynamic_entry (DT_RELASZ, 0)
2765 || !add_dynamic_entry (DT_RELAENT,
2766 SPARC_ELF_RELA_BYTES (htab)))
2767 return FALSE;
2768
2769 /* If any dynamic relocs apply to a read-only section,
2770 then we need a DT_TEXTREL entry. */
2771 if ((info->flags & DF_TEXTREL) == 0)
2772 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2773
2774 if (info->flags & DF_TEXTREL)
2775 {
2776 if (!add_dynamic_entry (DT_TEXTREL, 0))
2777 return FALSE;
2778 }
2779
2780 if (ABI_64_P (output_bfd))
2781 {
2782 int reg;
2783 struct _bfd_sparc_elf_app_reg * app_regs;
2784 struct elf_strtab_hash *dynstr;
2785 struct elf_link_hash_table *eht = elf_hash_table (info);
2786
2787 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2788 entries if needed. */
2789 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2790 dynstr = eht->dynstr;
2791
2792 for (reg = 0; reg < 4; reg++)
2793 if (app_regs [reg].name != NULL)
2794 {
2795 struct elf_link_local_dynamic_entry *entry, *e;
2796
2797 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2798 return FALSE;
2799
2800 entry = (struct elf_link_local_dynamic_entry *)
2801 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2802 if (entry == NULL)
2803 return FALSE;
2804
2805 /* We cheat here a little bit: the symbol will not be local, so we
2806 put it at the end of the dynlocal linked list. We will fix it
2807 later on, as we have to fix other fields anyway. */
2808 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2809 entry->isym.st_size = 0;
2810 if (*app_regs [reg].name != '\0')
2811 entry->isym.st_name
2812 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2813 else
2814 entry->isym.st_name = 0;
2815 entry->isym.st_other = 0;
2816 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2817 STT_REGISTER);
2818 entry->isym.st_shndx = app_regs [reg].shndx;
2819 entry->isym.st_target_internal = 0;
2820 entry->next = NULL;
2821 entry->input_bfd = output_bfd;
2822 entry->input_indx = -1;
2823
2824 if (eht->dynlocal == NULL)
2825 eht->dynlocal = entry;
2826 else
2827 {
2828 for (e = eht->dynlocal; e->next; e = e->next)
2829 ;
2830 e->next = entry;
2831 }
2832 eht->dynsymcount++;
2833 }
2834 }
2835 if (htab->is_vxworks
2836 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2837 return FALSE;
2838 }
2839 #undef add_dynamic_entry
2840
2841 return TRUE;
2842 }
2843 \f
2844 bfd_boolean
2845 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2846 {
2847 if (!sec->used_by_bfd)
2848 {
2849 struct _bfd_sparc_elf_section_data *sdata;
2850 bfd_size_type amt = sizeof (*sdata);
2851
2852 sdata = bfd_zalloc (abfd, amt);
2853 if (sdata == NULL)
2854 return FALSE;
2855 sec->used_by_bfd = sdata;
2856 }
2857
2858 return _bfd_elf_new_section_hook (abfd, sec);
2859 }
2860
2861 bfd_boolean
2862 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2863 struct bfd_section *section,
2864 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2865 bfd_boolean *again)
2866 {
2867 if (link_info->relocatable)
2868 (*link_info->callbacks->einfo)
2869 (_("%P%F: --relax and -r may not be used together\n"));
2870
2871 *again = FALSE;
2872 sec_do_relax (section) = 1;
2873 return TRUE;
2874 }
2875 \f
2876 /* Return the base VMA address which should be subtracted from real addresses
2877 when resolving @dtpoff relocation.
2878 This is PT_TLS segment p_vaddr. */
2879
2880 static bfd_vma
2881 dtpoff_base (struct bfd_link_info *info)
2882 {
2883 /* If tls_sec is NULL, we should have signalled an error already. */
2884 if (elf_hash_table (info)->tls_sec == NULL)
2885 return 0;
2886 return elf_hash_table (info)->tls_sec->vma;
2887 }
2888
2889 /* Return the relocation value for @tpoff relocation
2890 if STT_TLS virtual address is ADDRESS. */
2891
2892 static bfd_vma
2893 tpoff (struct bfd_link_info *info, bfd_vma address)
2894 {
2895 struct elf_link_hash_table *htab = elf_hash_table (info);
2896 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2897 bfd_vma static_tls_size;
2898
2899 /* If tls_sec is NULL, we should have signalled an error already. */
2900 if (htab->tls_sec == NULL)
2901 return 0;
2902
2903 /* Consider special static TLS alignment requirements. */
2904 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2905 return address - static_tls_size - htab->tls_sec->vma;
2906 }
2907
2908 /* Return the relocation value for a %gdop relocation. */
2909
2910 static bfd_vma
2911 gdopoff (struct bfd_link_info *info, bfd_vma address)
2912 {
2913 struct elf_link_hash_table *htab = elf_hash_table (info);
2914 bfd_vma got_base;
2915
2916 got_base = (htab->hgot->root.u.def.value
2917 + htab->hgot->root.u.def.section->output_offset
2918 + htab->hgot->root.u.def.section->output_section->vma);
2919
2920 return address - got_base;
2921 }
2922
2923 /* Relocate a SPARC ELF section. */
2924
2925 bfd_boolean
2926 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2927 struct bfd_link_info *info,
2928 bfd *input_bfd,
2929 asection *input_section,
2930 bfd_byte *contents,
2931 Elf_Internal_Rela *relocs,
2932 Elf_Internal_Sym *local_syms,
2933 asection **local_sections)
2934 {
2935 struct _bfd_sparc_elf_link_hash_table *htab;
2936 Elf_Internal_Shdr *symtab_hdr;
2937 struct elf_link_hash_entry **sym_hashes;
2938 bfd_vma *local_got_offsets;
2939 bfd_vma got_base;
2940 asection *sreloc;
2941 Elf_Internal_Rela *rel;
2942 Elf_Internal_Rela *relend;
2943 int num_relocs;
2944 bfd_boolean is_vxworks_tls;
2945
2946 htab = _bfd_sparc_elf_hash_table (info);
2947 BFD_ASSERT (htab != NULL);
2948 symtab_hdr = &elf_symtab_hdr (input_bfd);
2949 sym_hashes = elf_sym_hashes (input_bfd);
2950 local_got_offsets = elf_local_got_offsets (input_bfd);
2951
2952 if (elf_hash_table (info)->hgot == NULL)
2953 got_base = 0;
2954 else
2955 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2956
2957 sreloc = elf_section_data (input_section)->sreloc;
2958 /* We have to handle relocations in vxworks .tls_vars sections
2959 specially, because the dynamic loader is 'weird'. */
2960 is_vxworks_tls = (htab->is_vxworks && info->shared
2961 && !strcmp (input_section->output_section->name,
2962 ".tls_vars"));
2963
2964 rel = relocs;
2965 if (ABI_64_P (output_bfd))
2966 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2967 else
2968 num_relocs = input_section->reloc_count;
2969 relend = relocs + num_relocs;
2970 for (; rel < relend; rel++)
2971 {
2972 int r_type, tls_type;
2973 reloc_howto_type *howto;
2974 unsigned long r_symndx;
2975 struct elf_link_hash_entry *h;
2976 Elf_Internal_Sym *sym;
2977 asection *sec;
2978 bfd_vma relocation, off;
2979 bfd_reloc_status_type r;
2980 bfd_boolean is_plt = FALSE;
2981 bfd_boolean unresolved_reloc;
2982
2983 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2984 if (r_type == R_SPARC_GNU_VTINHERIT
2985 || r_type == R_SPARC_GNU_VTENTRY)
2986 continue;
2987
2988 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2989 {
2990 bfd_set_error (bfd_error_bad_value);
2991 return FALSE;
2992 }
2993 howto = _bfd_sparc_elf_howto_table + r_type;
2994
2995 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2996 h = NULL;
2997 sym = NULL;
2998 sec = NULL;
2999 unresolved_reloc = FALSE;
3000 if (r_symndx < symtab_hdr->sh_info)
3001 {
3002 sym = local_syms + r_symndx;
3003 sec = local_sections[r_symndx];
3004 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3005
3006 if (!info->relocatable
3007 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3008 {
3009 /* Relocate against local STT_GNU_IFUNC symbol. */
3010 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
3011 rel, FALSE);
3012 if (h == NULL)
3013 abort ();
3014
3015 /* Set STT_GNU_IFUNC symbol value. */
3016 h->root.u.def.value = sym->st_value;
3017 h->root.u.def.section = sec;
3018 }
3019 }
3020 else
3021 {
3022 bfd_boolean warned, ignored;
3023
3024 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3025 r_symndx, symtab_hdr, sym_hashes,
3026 h, sec, relocation,
3027 unresolved_reloc, warned, ignored);
3028 if (warned)
3029 {
3030 /* To avoid generating warning messages about truncated
3031 relocations, set the relocation's address to be the same as
3032 the start of this section. */
3033 if (input_section->output_section != NULL)
3034 relocation = input_section->output_section->vma;
3035 else
3036 relocation = 0;
3037 }
3038 }
3039
3040 if (sec != NULL && discarded_section (sec))
3041 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3042 rel, 1, relend, howto, 0, contents);
3043
3044 if (info->relocatable)
3045 continue;
3046
3047 if (h != NULL
3048 && h->type == STT_GNU_IFUNC
3049 && h->def_regular)
3050 {
3051 asection *plt_sec;
3052 const char *name;
3053
3054 if ((input_section->flags & SEC_ALLOC) == 0
3055 || h->plt.offset == (bfd_vma) -1)
3056 abort ();
3057
3058 plt_sec = htab->elf.splt;
3059 if (! plt_sec)
3060 plt_sec =htab->elf.iplt;
3061
3062 switch (r_type)
3063 {
3064 case R_SPARC_GOTDATA_OP:
3065 continue;
3066
3067 case R_SPARC_GOTDATA_OP_HIX22:
3068 case R_SPARC_GOTDATA_OP_LOX10:
3069 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3070 ? R_SPARC_GOT22
3071 : R_SPARC_GOT10);
3072 howto = _bfd_sparc_elf_howto_table + r_type;
3073 /* Fall through. */
3074
3075 case R_SPARC_GOT10:
3076 case R_SPARC_GOT13:
3077 case R_SPARC_GOT22:
3078 if (htab->elf.sgot == NULL)
3079 abort ();
3080 off = h->got.offset;
3081 if (off == (bfd_vma) -1)
3082 abort();
3083 relocation = htab->elf.sgot->output_offset + off - got_base;
3084 goto do_relocation;
3085
3086 case R_SPARC_WPLT30:
3087 case R_SPARC_WDISP30:
3088 relocation = (plt_sec->output_section->vma
3089 + plt_sec->output_offset + h->plt.offset);
3090 goto do_relocation;
3091
3092 case R_SPARC_32:
3093 case R_SPARC_64:
3094 if (info->shared && h->non_got_ref)
3095 {
3096 Elf_Internal_Rela outrel;
3097 bfd_vma offset;
3098
3099 offset = _bfd_elf_section_offset (output_bfd, info,
3100 input_section,
3101 rel->r_offset);
3102 if (offset == (bfd_vma) -1
3103 || offset == (bfd_vma) -2)
3104 abort();
3105
3106 outrel.r_offset = (input_section->output_section->vma
3107 + input_section->output_offset
3108 + offset);
3109
3110 if (h->dynindx == -1
3111 || h->forced_local
3112 || info->executable)
3113 {
3114 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3115 0, R_SPARC_IRELATIVE);
3116 outrel.r_addend = relocation + rel->r_addend;
3117 }
3118 else
3119 {
3120 if (h->dynindx == -1)
3121 abort();
3122 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3123 outrel.r_addend = rel->r_addend;
3124 }
3125
3126 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3127 continue;
3128 }
3129
3130 relocation = (plt_sec->output_section->vma
3131 + plt_sec->output_offset + h->plt.offset);
3132 goto do_relocation;
3133
3134 case R_SPARC_HI22:
3135 case R_SPARC_LO10:
3136 /* We should only see such relocs in static links. */
3137 if (info->shared)
3138 abort();
3139 relocation = (plt_sec->output_section->vma
3140 + plt_sec->output_offset + h->plt.offset);
3141 goto do_relocation;
3142
3143 default:
3144 if (h->root.root.string)
3145 name = h->root.root.string;
3146 else
3147 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3148 NULL);
3149 (*_bfd_error_handler)
3150 (_("%B: relocation %s against STT_GNU_IFUNC "
3151 "symbol `%s' isn't handled by %s"), input_bfd,
3152 _bfd_sparc_elf_howto_table[r_type].name,
3153 name, __FUNCTION__);
3154 bfd_set_error (bfd_error_bad_value);
3155 return FALSE;
3156 }
3157 }
3158
3159 switch (r_type)
3160 {
3161 case R_SPARC_GOTDATA_OP_HIX22:
3162 case R_SPARC_GOTDATA_OP_LOX10:
3163 if (SYMBOL_REFERENCES_LOCAL (info, h))
3164 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3165 ? R_SPARC_GOTDATA_HIX22
3166 : R_SPARC_GOTDATA_LOX10);
3167 else
3168 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3169 ? R_SPARC_GOT22
3170 : R_SPARC_GOT10);
3171 howto = _bfd_sparc_elf_howto_table + r_type;
3172 break;
3173
3174 case R_SPARC_GOTDATA_OP:
3175 if (SYMBOL_REFERENCES_LOCAL (info, h))
3176 {
3177 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3178
3179 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3180 relocation = 0x80000000 | (insn & 0x3e07c01f);
3181 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3182 }
3183 continue;
3184 }
3185
3186 switch (r_type)
3187 {
3188 case R_SPARC_GOTDATA_HIX22:
3189 case R_SPARC_GOTDATA_LOX10:
3190 relocation = gdopoff (info, relocation);
3191 break;
3192
3193 case R_SPARC_GOT10:
3194 case R_SPARC_GOT13:
3195 case R_SPARC_GOT22:
3196 /* Relocation is to the entry for this symbol in the global
3197 offset table. */
3198 if (htab->elf.sgot == NULL)
3199 abort ();
3200
3201 if (h != NULL)
3202 {
3203 bfd_boolean dyn;
3204
3205 off = h->got.offset;
3206 BFD_ASSERT (off != (bfd_vma) -1);
3207 dyn = elf_hash_table (info)->dynamic_sections_created;
3208
3209 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3210 || (info->shared
3211 && SYMBOL_REFERENCES_LOCAL (info, h)))
3212 {
3213 /* This is actually a static link, or it is a
3214 -Bsymbolic link and the symbol is defined
3215 locally, or the symbol was forced to be local
3216 because of a version file. We must initialize
3217 this entry in the global offset table. Since the
3218 offset must always be a multiple of 8 for 64-bit
3219 and 4 for 32-bit, we use the least significant bit
3220 to record whether we have initialized it already.
3221
3222 When doing a dynamic link, we create a .rela.got
3223 relocation entry to initialize the value. This
3224 is done in the finish_dynamic_symbol routine. */
3225 if ((off & 1) != 0)
3226 off &= ~1;
3227 else
3228 {
3229 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3230 htab->elf.sgot->contents + off);
3231 h->got.offset |= 1;
3232 }
3233 }
3234 else
3235 unresolved_reloc = FALSE;
3236 }
3237 else
3238 {
3239 BFD_ASSERT (local_got_offsets != NULL
3240 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3241
3242 off = local_got_offsets[r_symndx];
3243
3244 /* The offset must always be a multiple of 8 on 64-bit and
3245 4 on 32-bit. We use the least significant bit to record
3246 whether we have already processed this entry. */
3247 if ((off & 1) != 0)
3248 off &= ~1;
3249 else
3250 {
3251
3252 if (info->shared)
3253 {
3254 asection *s;
3255 Elf_Internal_Rela outrel;
3256
3257 /* We need to generate a R_SPARC_RELATIVE reloc
3258 for the dynamic linker. */
3259 s = htab->elf.srelgot;
3260 BFD_ASSERT (s != NULL);
3261
3262 outrel.r_offset = (htab->elf.sgot->output_section->vma
3263 + htab->elf.sgot->output_offset
3264 + off);
3265 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3266 0, R_SPARC_RELATIVE);
3267 outrel.r_addend = relocation;
3268 relocation = 0;
3269 sparc_elf_append_rela (output_bfd, s, &outrel);
3270 }
3271
3272 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3273 htab->elf.sgot->contents + off);
3274 local_got_offsets[r_symndx] |= 1;
3275 }
3276 }
3277 relocation = htab->elf.sgot->output_offset + off - got_base;
3278 break;
3279
3280 case R_SPARC_PLT32:
3281 case R_SPARC_PLT64:
3282 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3283 {
3284 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3285 goto r_sparc_plt32;
3286 }
3287 /* Fall through. */
3288
3289 case R_SPARC_WPLT30:
3290 case R_SPARC_HIPLT22:
3291 case R_SPARC_LOPLT10:
3292 case R_SPARC_PCPLT32:
3293 case R_SPARC_PCPLT22:
3294 case R_SPARC_PCPLT10:
3295 r_sparc_wplt30:
3296 /* Relocation is to the entry for this symbol in the
3297 procedure linkage table. */
3298
3299 if (! ABI_64_P (output_bfd))
3300 {
3301 /* The Solaris native assembler will generate a WPLT30 reloc
3302 for a local symbol if you assemble a call from one
3303 section to another when using -K pic. We treat it as
3304 WDISP30. */
3305 if (h == NULL)
3306 break;
3307 }
3308 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3309 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3310 break;
3311 else
3312 {
3313 BFD_ASSERT (h != NULL);
3314 }
3315
3316 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3317 {
3318 /* We didn't make a PLT entry for this symbol. This
3319 happens when statically linking PIC code, or when
3320 using -Bsymbolic. */
3321 break;
3322 }
3323
3324 relocation = (htab->elf.splt->output_section->vma
3325 + htab->elf.splt->output_offset
3326 + h->plt.offset);
3327 unresolved_reloc = FALSE;
3328 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3329 {
3330 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3331 is_plt = TRUE;
3332 goto r_sparc_plt32;
3333 }
3334 break;
3335
3336 case R_SPARC_PC10:
3337 case R_SPARC_PC22:
3338 case R_SPARC_PC_HH22:
3339 case R_SPARC_PC_HM10:
3340 case R_SPARC_PC_LM22:
3341 if (h != NULL
3342 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3343 break;
3344 /* Fall through. */
3345 case R_SPARC_DISP8:
3346 case R_SPARC_DISP16:
3347 case R_SPARC_DISP32:
3348 case R_SPARC_DISP64:
3349 case R_SPARC_WDISP30:
3350 case R_SPARC_WDISP22:
3351 case R_SPARC_WDISP19:
3352 case R_SPARC_WDISP16:
3353 case R_SPARC_WDISP10:
3354 case R_SPARC_8:
3355 case R_SPARC_16:
3356 case R_SPARC_32:
3357 case R_SPARC_HI22:
3358 case R_SPARC_22:
3359 case R_SPARC_13:
3360 case R_SPARC_LO10:
3361 case R_SPARC_UA16:
3362 case R_SPARC_UA32:
3363 case R_SPARC_10:
3364 case R_SPARC_11:
3365 case R_SPARC_64:
3366 case R_SPARC_OLO10:
3367 case R_SPARC_HH22:
3368 case R_SPARC_HM10:
3369 case R_SPARC_LM22:
3370 case R_SPARC_7:
3371 case R_SPARC_5:
3372 case R_SPARC_6:
3373 case R_SPARC_HIX22:
3374 case R_SPARC_LOX10:
3375 case R_SPARC_H44:
3376 case R_SPARC_M44:
3377 case R_SPARC_L44:
3378 case R_SPARC_H34:
3379 case R_SPARC_UA64:
3380 r_sparc_plt32:
3381 if ((input_section->flags & SEC_ALLOC) == 0
3382 || is_vxworks_tls)
3383 break;
3384
3385 if ((info->shared
3386 && (h == NULL
3387 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3388 || h->root.type != bfd_link_hash_undefweak)
3389 && (! howto->pc_relative
3390 || !SYMBOL_CALLS_LOCAL (info, h)))
3391 || (!info->shared
3392 && h != NULL
3393 && h->dynindx != -1
3394 && !h->non_got_ref
3395 && ((h->def_dynamic
3396 && !h->def_regular)
3397 || h->root.type == bfd_link_hash_undefweak
3398 || h->root.type == bfd_link_hash_undefined)))
3399 {
3400 Elf_Internal_Rela outrel;
3401 bfd_boolean skip, relocate = FALSE;
3402
3403 /* When generating a shared object, these relocations
3404 are copied into the output file to be resolved at run
3405 time. */
3406
3407 BFD_ASSERT (sreloc != NULL);
3408
3409 skip = FALSE;
3410
3411 outrel.r_offset =
3412 _bfd_elf_section_offset (output_bfd, info, input_section,
3413 rel->r_offset);
3414 if (outrel.r_offset == (bfd_vma) -1)
3415 skip = TRUE;
3416 else if (outrel.r_offset == (bfd_vma) -2)
3417 skip = TRUE, relocate = TRUE;
3418 outrel.r_offset += (input_section->output_section->vma
3419 + input_section->output_offset);
3420
3421 /* Optimize unaligned reloc usage now that we know where
3422 it finally resides. */
3423 switch (r_type)
3424 {
3425 case R_SPARC_16:
3426 if (outrel.r_offset & 1)
3427 r_type = R_SPARC_UA16;
3428 break;
3429 case R_SPARC_UA16:
3430 if (!(outrel.r_offset & 1))
3431 r_type = R_SPARC_16;
3432 break;
3433 case R_SPARC_32:
3434 if (outrel.r_offset & 3)
3435 r_type = R_SPARC_UA32;
3436 break;
3437 case R_SPARC_UA32:
3438 if (!(outrel.r_offset & 3))
3439 r_type = R_SPARC_32;
3440 break;
3441 case R_SPARC_64:
3442 if (outrel.r_offset & 7)
3443 r_type = R_SPARC_UA64;
3444 break;
3445 case R_SPARC_UA64:
3446 if (!(outrel.r_offset & 7))
3447 r_type = R_SPARC_64;
3448 break;
3449 case R_SPARC_DISP8:
3450 case R_SPARC_DISP16:
3451 case R_SPARC_DISP32:
3452 case R_SPARC_DISP64:
3453 /* If the symbol is not dynamic, we should not keep
3454 a dynamic relocation. But an .rela.* slot has been
3455 allocated for it, output R_SPARC_NONE.
3456 FIXME: Add code tracking needed dynamic relocs as
3457 e.g. i386 has. */
3458 if (h->dynindx == -1)
3459 skip = TRUE, relocate = TRUE;
3460 break;
3461 }
3462
3463 if (skip)
3464 memset (&outrel, 0, sizeof outrel);
3465 /* h->dynindx may be -1 if the symbol was marked to
3466 become local. */
3467 else if (h != NULL &&
3468 h->dynindx != -1
3469 && (! is_plt
3470 || !info->shared
3471 || !SYMBOLIC_BIND (info, h)
3472 || !h->def_regular))
3473 {
3474 BFD_ASSERT (h->dynindx != -1);
3475 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3476 outrel.r_addend = rel->r_addend;
3477 }
3478 else
3479 {
3480 if (r_type == R_SPARC_32 || r_type == R_SPARC_64)
3481 {
3482 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3483 0, R_SPARC_RELATIVE);
3484 outrel.r_addend = relocation + rel->r_addend;
3485 }
3486 else
3487 {
3488 long indx;
3489
3490 outrel.r_addend = relocation + rel->r_addend;
3491
3492 if (is_plt)
3493 sec = htab->elf.splt;
3494
3495 if (bfd_is_abs_section (sec))
3496 indx = 0;
3497 else if (sec == NULL || sec->owner == NULL)
3498 {
3499 bfd_set_error (bfd_error_bad_value);
3500 return FALSE;
3501 }
3502 else
3503 {
3504 asection *osec;
3505
3506 /* We are turning this relocation into one
3507 against a section symbol. It would be
3508 proper to subtract the symbol's value,
3509 osec->vma, from the emitted reloc addend,
3510 but ld.so expects buggy relocs. */
3511 osec = sec->output_section;
3512 indx = elf_section_data (osec)->dynindx;
3513
3514 if (indx == 0)
3515 {
3516 osec = htab->elf.text_index_section;
3517 indx = elf_section_data (osec)->dynindx;
3518 }
3519
3520 /* FIXME: we really should be able to link non-pic
3521 shared libraries. */
3522 if (indx == 0)
3523 {
3524 BFD_FAIL ();
3525 (*_bfd_error_handler)
3526 (_("%B: probably compiled without -fPIC?"),
3527 input_bfd);
3528 bfd_set_error (bfd_error_bad_value);
3529 return FALSE;
3530 }
3531 }
3532
3533 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3534 r_type);
3535 }
3536 }
3537
3538 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3539
3540 /* This reloc will be computed at runtime, so there's no
3541 need to do anything now. */
3542 if (! relocate)
3543 continue;
3544 }
3545 break;
3546
3547 case R_SPARC_TLS_GD_HI22:
3548 if (! ABI_64_P (input_bfd)
3549 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3550 {
3551 /* R_SPARC_REV32 used the same reloc number as
3552 R_SPARC_TLS_GD_HI22. */
3553 r_type = R_SPARC_REV32;
3554 break;
3555 }
3556 /* Fall through */
3557
3558 case R_SPARC_TLS_GD_LO10:
3559 case R_SPARC_TLS_IE_HI22:
3560 case R_SPARC_TLS_IE_LO10:
3561 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3562 tls_type = GOT_UNKNOWN;
3563 if (h == NULL && local_got_offsets)
3564 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3565 else if (h != NULL)
3566 {
3567 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3568 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3569 switch (SPARC_ELF_R_TYPE (rel->r_info))
3570 {
3571 case R_SPARC_TLS_GD_HI22:
3572 case R_SPARC_TLS_IE_HI22:
3573 r_type = R_SPARC_TLS_LE_HIX22;
3574 break;
3575 default:
3576 r_type = R_SPARC_TLS_LE_LOX10;
3577 break;
3578 }
3579 }
3580 if (tls_type == GOT_TLS_IE)
3581 switch (r_type)
3582 {
3583 case R_SPARC_TLS_GD_HI22:
3584 r_type = R_SPARC_TLS_IE_HI22;
3585 break;
3586 case R_SPARC_TLS_GD_LO10:
3587 r_type = R_SPARC_TLS_IE_LO10;
3588 break;
3589 }
3590
3591 if (r_type == R_SPARC_TLS_LE_HIX22)
3592 {
3593 relocation = tpoff (info, relocation);
3594 break;
3595 }
3596 if (r_type == R_SPARC_TLS_LE_LOX10)
3597 {
3598 /* Change add into xor. */
3599 relocation = tpoff (info, relocation);
3600 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3601 contents + rel->r_offset)
3602 | 0x80182000), contents + rel->r_offset);
3603 break;
3604 }
3605
3606 if (h != NULL)
3607 {
3608 off = h->got.offset;
3609 h->got.offset |= 1;
3610 }
3611 else
3612 {
3613 BFD_ASSERT (local_got_offsets != NULL);
3614 off = local_got_offsets[r_symndx];
3615 local_got_offsets[r_symndx] |= 1;
3616 }
3617
3618 r_sparc_tlsldm:
3619 if (htab->elf.sgot == NULL)
3620 abort ();
3621
3622 if ((off & 1) != 0)
3623 off &= ~1;
3624 else
3625 {
3626 Elf_Internal_Rela outrel;
3627 int dr_type, indx;
3628
3629 if (htab->elf.srelgot == NULL)
3630 abort ();
3631
3632 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3633 htab->elf.sgot->contents + off);
3634 outrel.r_offset = (htab->elf.sgot->output_section->vma
3635 + htab->elf.sgot->output_offset + off);
3636 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3637 if (r_type == R_SPARC_TLS_IE_HI22
3638 || r_type == R_SPARC_TLS_IE_LO10)
3639 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3640 else
3641 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3642 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3643 outrel.r_addend = relocation - dtpoff_base (info);
3644 else
3645 outrel.r_addend = 0;
3646 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3647 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3648
3649 if (r_type == R_SPARC_TLS_GD_HI22
3650 || r_type == R_SPARC_TLS_GD_LO10)
3651 {
3652 if (indx == 0)
3653 {
3654 BFD_ASSERT (! unresolved_reloc);
3655 SPARC_ELF_PUT_WORD (htab, output_bfd,
3656 relocation - dtpoff_base (info),
3657 (htab->elf.sgot->contents + off
3658 + SPARC_ELF_WORD_BYTES (htab)));
3659 }
3660 else
3661 {
3662 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3663 (htab->elf.sgot->contents + off
3664 + SPARC_ELF_WORD_BYTES (htab)));
3665 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3666 SPARC_ELF_DTPOFF_RELOC (htab));
3667 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3668 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3669 &outrel);
3670 }
3671 }
3672 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3673 {
3674 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3675 (htab->elf.sgot->contents + off
3676 + SPARC_ELF_WORD_BYTES (htab)));
3677 }
3678 }
3679
3680 if (off >= (bfd_vma) -2)
3681 abort ();
3682
3683 relocation = htab->elf.sgot->output_offset + off - got_base;
3684 unresolved_reloc = FALSE;
3685 howto = _bfd_sparc_elf_howto_table + r_type;
3686 break;
3687
3688 case R_SPARC_TLS_LDM_HI22:
3689 case R_SPARC_TLS_LDM_LO10:
3690 if (! info->shared)
3691 {
3692 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3693 continue;
3694 }
3695 off = htab->tls_ldm_got.offset;
3696 htab->tls_ldm_got.offset |= 1;
3697 goto r_sparc_tlsldm;
3698
3699 case R_SPARC_TLS_LDO_HIX22:
3700 case R_SPARC_TLS_LDO_LOX10:
3701 if (info->shared)
3702 {
3703 relocation -= dtpoff_base (info);
3704 break;
3705 }
3706
3707 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3708 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3709 /* Fall through. */
3710
3711 case R_SPARC_TLS_LE_HIX22:
3712 case R_SPARC_TLS_LE_LOX10:
3713 if (info->shared)
3714 {
3715 Elf_Internal_Rela outrel;
3716 bfd_boolean skip;
3717
3718 BFD_ASSERT (sreloc != NULL);
3719 skip = FALSE;
3720 outrel.r_offset =
3721 _bfd_elf_section_offset (output_bfd, info, input_section,
3722 rel->r_offset);
3723 if (outrel.r_offset == (bfd_vma) -1)
3724 skip = TRUE;
3725 else if (outrel.r_offset == (bfd_vma) -2)
3726 skip = TRUE;
3727 outrel.r_offset += (input_section->output_section->vma
3728 + input_section->output_offset);
3729 if (skip)
3730 memset (&outrel, 0, sizeof outrel);
3731 else
3732 {
3733 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3734 outrel.r_addend = relocation - dtpoff_base (info)
3735 + rel->r_addend;
3736 }
3737
3738 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3739 continue;
3740 }
3741 relocation = tpoff (info, relocation);
3742 break;
3743
3744 case R_SPARC_TLS_LDM_CALL:
3745 if (! info->shared)
3746 {
3747 /* mov %g0, %o0 */
3748 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3749 continue;
3750 }
3751 /* Fall through */
3752
3753 case R_SPARC_TLS_GD_CALL:
3754 tls_type = GOT_UNKNOWN;
3755 if (h == NULL && local_got_offsets)
3756 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3757 else if (h != NULL)
3758 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3759 if (! info->shared
3760 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3761 {
3762 Elf_Internal_Rela *rel2;
3763 bfd_vma insn;
3764
3765 if (!info->shared && (h == NULL || h->dynindx == -1))
3766 {
3767 /* GD -> LE */
3768 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3769 continue;
3770 }
3771
3772 /* GD -> IE */
3773 if (rel + 1 < relend
3774 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3775 && rel[1].r_offset == rel->r_offset + 4
3776 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3777 && (((insn = bfd_get_32 (input_bfd,
3778 contents + rel[1].r_offset))
3779 >> 25) & 0x1f) == 8)
3780 {
3781 /* We have
3782 call __tls_get_addr, %tgd_call(foo)
3783 add %reg1, %reg2, %o0, %tgd_add(foo)
3784 and change it into IE:
3785 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3786 add %g7, %o0, %o0, %tie_add(foo).
3787 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3788 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3789 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3790 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3791 contents + rel->r_offset);
3792 bfd_put_32 (output_bfd, 0x9001c008,
3793 contents + rel->r_offset + 4);
3794 rel++;
3795 continue;
3796 }
3797
3798 /* We cannot just overwrite the delay slot instruction,
3799 as it might be what puts the %o0 argument to
3800 __tls_get_addr into place. So we have to transpose
3801 the delay slot with the add we patch in. */
3802 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3803 bfd_put_32 (output_bfd, insn,
3804 contents + rel->r_offset);
3805 bfd_put_32 (output_bfd, 0x9001c008,
3806 contents + rel->r_offset + 4);
3807
3808 rel2 = rel;
3809 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3810 rel->r_offset + 4))
3811 != NULL)
3812 {
3813 /* If the instruction we moved has a relocation attached to
3814 it, adjust the offset so that it will apply to the correct
3815 instruction. */
3816 rel2->r_offset -= 4;
3817 }
3818 continue;
3819 }
3820
3821 h = (struct elf_link_hash_entry *)
3822 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3823 FALSE, TRUE);
3824 BFD_ASSERT (h != NULL);
3825 r_type = R_SPARC_WPLT30;
3826 howto = _bfd_sparc_elf_howto_table + r_type;
3827 goto r_sparc_wplt30;
3828
3829 case R_SPARC_TLS_GD_ADD:
3830 tls_type = GOT_UNKNOWN;
3831 if (h == NULL && local_got_offsets)
3832 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3833 else if (h != NULL)
3834 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3835 if (! info->shared || tls_type == GOT_TLS_IE)
3836 {
3837 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3838 changed into IE:
3839 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3840 or LE:
3841 add %g7, %reg2, %reg3. */
3842 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3843 if ((h != NULL && h->dynindx != -1) || info->shared)
3844 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3845 else
3846 relocation = (insn & ~0x7c000) | 0x1c000;
3847 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3848 }
3849 continue;
3850
3851 case R_SPARC_TLS_LDM_ADD:
3852 if (! info->shared)
3853 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3854 continue;
3855
3856 case R_SPARC_TLS_LDO_ADD:
3857 if (! info->shared)
3858 {
3859 /* Change rs1 into %g7. */
3860 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3861 insn = (insn & ~0x7c000) | 0x1c000;
3862 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3863 }
3864 continue;
3865
3866 case R_SPARC_TLS_IE_LD:
3867 case R_SPARC_TLS_IE_LDX:
3868 if (! info->shared && (h == NULL || h->dynindx == -1))
3869 {
3870 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3871 int rs2 = insn & 0x1f;
3872 int rd = (insn >> 25) & 0x1f;
3873
3874 if (rs2 == rd)
3875 relocation = SPARC_NOP;
3876 else
3877 relocation = 0x80100000 | (insn & 0x3e00001f);
3878 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3879 }
3880 continue;
3881
3882 case R_SPARC_TLS_IE_ADD:
3883 /* Totally useless relocation. */
3884 continue;
3885
3886 case R_SPARC_TLS_DTPOFF32:
3887 case R_SPARC_TLS_DTPOFF64:
3888 relocation -= dtpoff_base (info);
3889 break;
3890
3891 default:
3892 break;
3893 }
3894
3895 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3896 because such sections are not SEC_ALLOC and thus ld.so will
3897 not process them. */
3898 if (unresolved_reloc
3899 && !((input_section->flags & SEC_DEBUGGING) != 0
3900 && h->def_dynamic)
3901 && _bfd_elf_section_offset (output_bfd, info, input_section,
3902 rel->r_offset) != (bfd_vma) -1)
3903 (*_bfd_error_handler)
3904 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3905 input_bfd,
3906 input_section,
3907 (long) rel->r_offset,
3908 howto->name,
3909 h->root.root.string);
3910
3911 r = bfd_reloc_continue;
3912 if (r_type == R_SPARC_OLO10)
3913 {
3914 bfd_vma x;
3915
3916 if (! ABI_64_P (output_bfd))
3917 abort ();
3918
3919 relocation += rel->r_addend;
3920 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3921
3922 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3923 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3924 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3925
3926 r = bfd_check_overflow (howto->complain_on_overflow,
3927 howto->bitsize, howto->rightshift,
3928 bfd_arch_bits_per_address (input_bfd),
3929 relocation);
3930 }
3931 else if (r_type == R_SPARC_WDISP16)
3932 {
3933 bfd_vma x;
3934
3935 relocation += rel->r_addend;
3936 relocation -= (input_section->output_section->vma
3937 + input_section->output_offset);
3938 relocation -= rel->r_offset;
3939
3940 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3941 x |= ((((relocation >> 2) & 0xc000) << 6)
3942 | ((relocation >> 2) & 0x3fff));
3943 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3944
3945 r = bfd_check_overflow (howto->complain_on_overflow,
3946 howto->bitsize, howto->rightshift,
3947 bfd_arch_bits_per_address (input_bfd),
3948 relocation);
3949 }
3950 else if (r_type == R_SPARC_WDISP10)
3951 {
3952 bfd_vma x;
3953
3954 relocation += rel->r_addend;
3955 relocation -= (input_section->output_section->vma
3956 + input_section->output_offset);
3957 relocation -= rel->r_offset;
3958
3959 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3960 x |= ((((relocation >> 2) & 0x300) << 11)
3961 | (((relocation >> 2) & 0xff) << 5));
3962 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3963
3964 r = bfd_check_overflow (howto->complain_on_overflow,
3965 howto->bitsize, howto->rightshift,
3966 bfd_arch_bits_per_address (input_bfd),
3967 relocation);
3968 }
3969 else if (r_type == R_SPARC_REV32)
3970 {
3971 bfd_vma x;
3972
3973 relocation = relocation + rel->r_addend;
3974
3975 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3976 x = x + relocation;
3977 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3978 r = bfd_reloc_ok;
3979 }
3980 else if (r_type == R_SPARC_TLS_LDO_HIX22
3981 || r_type == R_SPARC_TLS_LE_HIX22)
3982 {
3983 bfd_vma x;
3984
3985 relocation += rel->r_addend;
3986 if (r_type == R_SPARC_TLS_LE_HIX22)
3987 relocation ^= MINUS_ONE;
3988
3989 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3990 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3991 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3992 r = bfd_reloc_ok;
3993 }
3994 else if (r_type == R_SPARC_TLS_LDO_LOX10
3995 || r_type == R_SPARC_TLS_LE_LOX10)
3996 {
3997 bfd_vma x;
3998
3999 relocation += rel->r_addend;
4000 relocation &= 0x3ff;
4001 if (r_type == R_SPARC_TLS_LE_LOX10)
4002 relocation |= 0x1c00;
4003
4004 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4005 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4006 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4007
4008 r = bfd_reloc_ok;
4009 }
4010 else if (r_type == R_SPARC_HIX22
4011 || r_type == R_SPARC_GOTDATA_HIX22)
4012 {
4013 bfd_vma x;
4014
4015 relocation += rel->r_addend;
4016 if (r_type == R_SPARC_HIX22
4017 || (bfd_signed_vma) relocation < 0)
4018 relocation = relocation ^ MINUS_ONE;
4019
4020 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4021 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
4022 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4023
4024 r = bfd_check_overflow (howto->complain_on_overflow,
4025 howto->bitsize, howto->rightshift,
4026 bfd_arch_bits_per_address (input_bfd),
4027 relocation);
4028 }
4029 else if (r_type == R_SPARC_LOX10
4030 || r_type == R_SPARC_GOTDATA_LOX10)
4031 {
4032 bfd_vma x;
4033
4034 relocation += rel->r_addend;
4035 if (r_type == R_SPARC_LOX10
4036 || (bfd_signed_vma) relocation < 0)
4037 relocation = (relocation & 0x3ff) | 0x1c00;
4038 else
4039 relocation = (relocation & 0x3ff);
4040
4041 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4042 x = (x & ~(bfd_vma) 0x1fff) | relocation;
4043 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4044
4045 r = bfd_reloc_ok;
4046 }
4047 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
4048 && sec_do_relax (input_section)
4049 && rel->r_offset + 4 < input_section->size)
4050 {
4051 #define G0 0
4052 #define O7 15
4053 #define XCC (2 << 20)
4054 #define COND(x) (((x)&0xf)<<25)
4055 #define CONDA COND(0x8)
4056 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
4057 #define INSN_BA (F2(0,2) | CONDA)
4058 #define INSN_OR F3(2, 0x2, 0)
4059 #define INSN_NOP F2(0,4)
4060
4061 bfd_vma x, y;
4062
4063 /* If the instruction is a call with either:
4064 restore
4065 arithmetic instruction with rd == %o7
4066 where rs1 != %o7 and rs2 if it is register != %o7
4067 then we can optimize if the call destination is near
4068 by changing the call into a branch always. */
4069 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
4070 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
4071 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
4072 {
4073 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
4074 || ((y & OP3(0x28)) == 0 /* arithmetic */
4075 && (y & RD(~0)) == RD(O7)))
4076 && (y & RS1(~0)) != RS1(O7)
4077 && ((y & F3I(~0))
4078 || (y & RS2(~0)) != RS2(O7)))
4079 {
4080 bfd_vma reloc;
4081
4082 reloc = relocation + rel->r_addend - rel->r_offset;
4083 reloc -= (input_section->output_section->vma
4084 + input_section->output_offset);
4085
4086 /* Ensure the branch fits into simm22. */
4087 if ((reloc & 3) == 0
4088 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4089 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4090 {
4091 reloc >>= 2;
4092
4093 /* Check whether it fits into simm19. */
4094 if (((reloc & 0x3c0000) == 0
4095 || (reloc & 0x3c0000) == 0x3c0000)
4096 && (ABI_64_P (output_bfd)
4097 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4098 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4099 else
4100 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4101 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4102 r = bfd_reloc_ok;
4103 if (rel->r_offset >= 4
4104 && (y & (0xffffffff ^ RS1(~0)))
4105 == (INSN_OR | RD(O7) | RS2(G0)))
4106 {
4107 bfd_vma z;
4108 unsigned int reg;
4109
4110 z = bfd_get_32 (input_bfd,
4111 contents + rel->r_offset - 4);
4112 if ((z & (0xffffffff ^ RD(~0)))
4113 != (INSN_OR | RS1(O7) | RS2(G0)))
4114 break;
4115
4116 /* The sequence was
4117 or %o7, %g0, %rN
4118 call foo
4119 or %rN, %g0, %o7
4120
4121 If call foo was replaced with ba, replace
4122 or %rN, %g0, %o7 with nop. */
4123
4124 reg = (y & RS1(~0)) >> 14;
4125 if (reg != ((z & RD(~0)) >> 25)
4126 || reg == G0 || reg == O7)
4127 break;
4128
4129 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4130 contents + rel->r_offset + 4);
4131 }
4132
4133 }
4134 }
4135 }
4136 }
4137
4138 if (r == bfd_reloc_continue)
4139 {
4140 do_relocation:
4141 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4142 contents, rel->r_offset,
4143 relocation, rel->r_addend);
4144 }
4145 if (r != bfd_reloc_ok)
4146 {
4147 switch (r)
4148 {
4149 default:
4150 case bfd_reloc_outofrange:
4151 abort ();
4152 case bfd_reloc_overflow:
4153 {
4154 const char *name;
4155
4156 /* The Solaris native linker silently disregards overflows.
4157 We don't, but this breaks stabs debugging info, whose
4158 relocations are only 32-bits wide. Ignore overflows in
4159 this case and also for discarded entries. */
4160 if ((r_type == R_SPARC_32
4161 || r_type == R_SPARC_UA32
4162 || r_type == R_SPARC_DISP32)
4163 && (((input_section->flags & SEC_DEBUGGING) != 0
4164 && strcmp (bfd_section_name (input_bfd,
4165 input_section),
4166 ".stab") == 0)
4167 || _bfd_elf_section_offset (output_bfd, info,
4168 input_section,
4169 rel->r_offset)
4170 == (bfd_vma)-1))
4171 break;
4172
4173 if (h != NULL)
4174 {
4175 /* Assume this is a call protected by other code that
4176 detect the symbol is undefined. If this is the case,
4177 we can safely ignore the overflow. If not, the
4178 program is hosed anyway, and a little warning isn't
4179 going to help. */
4180 if (h->root.type == bfd_link_hash_undefweak
4181 && howto->pc_relative)
4182 break;
4183
4184 name = NULL;
4185 }
4186 else
4187 {
4188 name = bfd_elf_string_from_elf_section (input_bfd,
4189 symtab_hdr->sh_link,
4190 sym->st_name);
4191 if (name == NULL)
4192 return FALSE;
4193 if (*name == '\0')
4194 name = bfd_section_name (input_bfd, sec);
4195 }
4196 if (! ((*info->callbacks->reloc_overflow)
4197 (info, (h ? &h->root : NULL), name, howto->name,
4198 (bfd_vma) 0, input_bfd, input_section,
4199 rel->r_offset)))
4200 return FALSE;
4201 }
4202 break;
4203 }
4204 }
4205 }
4206
4207 return TRUE;
4208 }
4209
4210 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4211 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4212 is the offset of the associated .got.plt entry from
4213 _GLOBAL_OFFSET_TABLE_. */
4214
4215 static void
4216 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4217 bfd_vma plt_offset, bfd_vma plt_index,
4218 bfd_vma got_offset)
4219 {
4220 bfd_vma got_base;
4221 const bfd_vma *plt_entry;
4222 struct _bfd_sparc_elf_link_hash_table *htab;
4223 bfd_byte *loc;
4224 Elf_Internal_Rela rela;
4225
4226 htab = _bfd_sparc_elf_hash_table (info);
4227 BFD_ASSERT (htab != NULL);
4228
4229 if (info->shared)
4230 {
4231 plt_entry = sparc_vxworks_shared_plt_entry;
4232 got_base = 0;
4233 }
4234 else
4235 {
4236 plt_entry = sparc_vxworks_exec_plt_entry;
4237 got_base = (htab->elf.hgot->root.u.def.value
4238 + htab->elf.hgot->root.u.def.section->output_offset
4239 + htab->elf.hgot->root.u.def.section->output_section->vma);
4240 }
4241
4242 /* Fill in the entry in the procedure linkage table. */
4243 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4244 htab->elf.splt->contents + plt_offset);
4245 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4246 htab->elf.splt->contents + plt_offset + 4);
4247 bfd_put_32 (output_bfd, plt_entry[2],
4248 htab->elf.splt->contents + plt_offset + 8);
4249 bfd_put_32 (output_bfd, plt_entry[3],
4250 htab->elf.splt->contents + plt_offset + 12);
4251 bfd_put_32 (output_bfd, plt_entry[4],
4252 htab->elf.splt->contents + plt_offset + 16);
4253 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4254 htab->elf.splt->contents + plt_offset + 20);
4255 /* PC-relative displacement for a branch to the start of
4256 the PLT section. */
4257 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4258 & 0x003fffff),
4259 htab->elf.splt->contents + plt_offset + 24);
4260 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4261 htab->elf.splt->contents + plt_offset + 28);
4262
4263 /* Fill in the .got.plt entry, pointing initially at the
4264 second half of the PLT entry. */
4265 BFD_ASSERT (htab->elf.sgotplt != NULL);
4266 bfd_put_32 (output_bfd,
4267 htab->elf.splt->output_section->vma
4268 + htab->elf.splt->output_offset
4269 + plt_offset + 20,
4270 htab->elf.sgotplt->contents + got_offset);
4271
4272 /* Add relocations to .rela.plt.unloaded. */
4273 if (!info->shared)
4274 {
4275 loc = (htab->srelplt2->contents
4276 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4277
4278 /* Relocate the initial sethi. */
4279 rela.r_offset = (htab->elf.splt->output_section->vma
4280 + htab->elf.splt->output_offset
4281 + plt_offset);
4282 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4283 rela.r_addend = got_offset;
4284 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4285 loc += sizeof (Elf32_External_Rela);
4286
4287 /* Likewise the following or. */
4288 rela.r_offset += 4;
4289 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4290 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4291 loc += sizeof (Elf32_External_Rela);
4292
4293 /* Relocate the .got.plt entry. */
4294 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4295 + htab->elf.sgotplt->output_offset
4296 + got_offset);
4297 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4298 rela.r_addend = plt_offset + 20;
4299 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4300 }
4301 }
4302
4303 /* Finish up dynamic symbol handling. We set the contents of various
4304 dynamic sections here. */
4305
4306 bfd_boolean
4307 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4308 struct bfd_link_info *info,
4309 struct elf_link_hash_entry *h,
4310 Elf_Internal_Sym *sym)
4311 {
4312 struct _bfd_sparc_elf_link_hash_table *htab;
4313 const struct elf_backend_data *bed;
4314
4315 htab = _bfd_sparc_elf_hash_table (info);
4316 BFD_ASSERT (htab != NULL);
4317 bed = get_elf_backend_data (output_bfd);
4318
4319 if (h->plt.offset != (bfd_vma) -1)
4320 {
4321 asection *splt;
4322 asection *srela;
4323 Elf_Internal_Rela rela;
4324 bfd_byte *loc;
4325 bfd_vma r_offset, got_offset;
4326 int rela_index;
4327
4328 /* When building a static executable, use .iplt and
4329 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4330 if (htab->elf.splt != NULL)
4331 {
4332 splt = htab->elf.splt;
4333 srela = htab->elf.srelplt;
4334 }
4335 else
4336 {
4337 splt = htab->elf.iplt;
4338 srela = htab->elf.irelplt;
4339 }
4340
4341 if (splt == NULL || srela == NULL)
4342 abort ();
4343
4344 /* Fill in the entry in the .rela.plt section. */
4345 if (htab->is_vxworks)
4346 {
4347 /* Work out the index of this PLT entry. */
4348 rela_index = ((h->plt.offset - htab->plt_header_size)
4349 / htab->plt_entry_size);
4350
4351 /* Calculate the offset of the associated .got.plt entry.
4352 The first three entries are reserved. */
4353 got_offset = (rela_index + 3) * 4;
4354
4355 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4356 rela_index, got_offset);
4357
4358
4359 /* On VxWorks, the relocation points to the .got.plt entry,
4360 not the .plt entry. */
4361 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4362 + htab->elf.sgotplt->output_offset
4363 + got_offset);
4364 rela.r_addend = 0;
4365 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4366 R_SPARC_JMP_SLOT);
4367 }
4368 else
4369 {
4370 bfd_boolean ifunc = FALSE;
4371
4372 /* Fill in the entry in the procedure linkage table. */
4373 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4374 h->plt.offset, splt->size,
4375 &r_offset);
4376
4377 if (h == NULL
4378 || h->dynindx == -1
4379 || ((info->executable
4380 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4381 && h->def_regular
4382 && h->type == STT_GNU_IFUNC))
4383 {
4384 ifunc = TRUE;
4385 BFD_ASSERT (h == NULL
4386 || (h->type == STT_GNU_IFUNC
4387 && h->def_regular
4388 && (h->root.type == bfd_link_hash_defined
4389 || h->root.type == bfd_link_hash_defweak)));
4390 }
4391
4392 rela.r_offset = r_offset
4393 + (splt->output_section->vma + splt->output_offset);
4394 if (ABI_64_P (output_bfd)
4395 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4396 {
4397 if (ifunc)
4398 {
4399 rela.r_addend = (h->root.u.def.section->output_section->vma
4400 + h->root.u.def.section->output_offset
4401 + h->root.u.def.value);
4402 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4403 R_SPARC_IRELATIVE);
4404 }
4405 else
4406 {
4407 rela.r_addend = (-(h->plt.offset + 4)
4408 - splt->output_section->vma
4409 - splt->output_offset);
4410 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4411 R_SPARC_JMP_SLOT);
4412 }
4413 }
4414 else
4415 {
4416 if (ifunc)
4417 {
4418 rela.r_addend = (h->root.u.def.section->output_section->vma
4419 + h->root.u.def.section->output_offset
4420 + h->root.u.def.value);
4421 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4422 R_SPARC_JMP_IREL);
4423 }
4424 else
4425 {
4426 rela.r_addend = 0;
4427 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4428 R_SPARC_JMP_SLOT);
4429 }
4430 }
4431 }
4432
4433 /* Adjust for the first 4 reserved elements in the .plt section
4434 when setting the offset in the .rela.plt section.
4435 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4436 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4437
4438 loc = srela->contents;
4439 loc += rela_index * bed->s->sizeof_rela;
4440 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4441
4442 if (!h->def_regular)
4443 {
4444 /* Mark the symbol as undefined, rather than as defined in
4445 the .plt section. Leave the value alone. */
4446 sym->st_shndx = SHN_UNDEF;
4447 /* If the symbol is weak, we do need to clear the value.
4448 Otherwise, the PLT entry would provide a definition for
4449 the symbol even if the symbol wasn't defined anywhere,
4450 and so the symbol would never be NULL. */
4451 if (!h->ref_regular_nonweak)
4452 sym->st_value = 0;
4453 }
4454 }
4455
4456 if (h->got.offset != (bfd_vma) -1
4457 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4458 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4459 {
4460 asection *sgot;
4461 asection *srela;
4462 Elf_Internal_Rela rela;
4463
4464 /* This symbol has an entry in the GOT. Set it up. */
4465
4466 sgot = htab->elf.sgot;
4467 srela = htab->elf.srelgot;
4468 BFD_ASSERT (sgot != NULL && srela != NULL);
4469
4470 rela.r_offset = (sgot->output_section->vma
4471 + sgot->output_offset
4472 + (h->got.offset &~ (bfd_vma) 1));
4473
4474 /* If this is a -Bsymbolic link, and the symbol is defined
4475 locally, we just want to emit a RELATIVE reloc. Likewise if
4476 the symbol was forced to be local because of a version file.
4477 The entry in the global offset table will already have been
4478 initialized in the relocate_section function. */
4479 if (! info->shared
4480 && h->type == STT_GNU_IFUNC
4481 && h->def_regular)
4482 {
4483 asection *plt;
4484
4485 /* We load the GOT entry with the PLT entry. */
4486 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4487 SPARC_ELF_PUT_WORD (htab, output_bfd,
4488 (plt->output_section->vma
4489 + plt->output_offset + h->plt.offset),
4490 htab->elf.sgot->contents
4491 + (h->got.offset & ~(bfd_vma) 1));
4492 return TRUE;
4493 }
4494 else if (info->shared
4495 && SYMBOL_REFERENCES_LOCAL (info, h))
4496 {
4497 asection *sec = h->root.u.def.section;
4498 if (h->type == STT_GNU_IFUNC)
4499 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4500 else
4501 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4502 rela.r_addend = (h->root.u.def.value
4503 + sec->output_section->vma
4504 + sec->output_offset);
4505 }
4506 else
4507 {
4508 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4509 rela.r_addend = 0;
4510 }
4511
4512 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4513 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4514 sparc_elf_append_rela (output_bfd, srela, &rela);
4515 }
4516
4517 if (h->needs_copy)
4518 {
4519 asection *s;
4520 Elf_Internal_Rela rela;
4521
4522 /* This symbols needs a copy reloc. Set it up. */
4523 BFD_ASSERT (h->dynindx != -1);
4524
4525 s = bfd_get_linker_section (h->root.u.def.section->owner,
4526 ".rela.bss");
4527 BFD_ASSERT (s != NULL);
4528
4529 rela.r_offset = (h->root.u.def.value
4530 + h->root.u.def.section->output_section->vma
4531 + h->root.u.def.section->output_offset);
4532 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4533 rela.r_addend = 0;
4534 sparc_elf_append_rela (output_bfd, s, &rela);
4535 }
4536
4537 /* Mark some specially defined symbols as absolute. On VxWorks,
4538 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4539 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4540 if (sym != NULL
4541 && (h == htab->elf.hdynamic
4542 || (!htab->is_vxworks
4543 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4544 sym->st_shndx = SHN_ABS;
4545
4546 return TRUE;
4547 }
4548
4549 /* Finish up the dynamic sections. */
4550
4551 static bfd_boolean
4552 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4553 bfd *dynobj, asection *sdyn,
4554 asection *splt ATTRIBUTE_UNUSED)
4555 {
4556 struct _bfd_sparc_elf_link_hash_table *htab;
4557 const struct elf_backend_data *bed;
4558 bfd_byte *dyncon, *dynconend;
4559 size_t dynsize;
4560 int stt_regidx = -1;
4561 bfd_boolean abi_64_p;
4562
4563 htab = _bfd_sparc_elf_hash_table (info);
4564 BFD_ASSERT (htab != NULL);
4565 bed = get_elf_backend_data (output_bfd);
4566 dynsize = bed->s->sizeof_dyn;
4567 dynconend = sdyn->contents + sdyn->size;
4568 abi_64_p = ABI_64_P (output_bfd);
4569 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4570 {
4571 Elf_Internal_Dyn dyn;
4572 const char *name;
4573 bfd_boolean size;
4574
4575 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4576
4577 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4578 {
4579 /* On VxWorks, DT_RELASZ should not include the relocations
4580 in .rela.plt. */
4581 if (htab->elf.srelplt)
4582 {
4583 dyn.d_un.d_val -= htab->elf.srelplt->size;
4584 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4585 }
4586 }
4587 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4588 {
4589 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4590 not to the start of the PLT. */
4591 if (htab->elf.sgotplt)
4592 {
4593 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4594 + htab->elf.sgotplt->output_offset);
4595 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4596 }
4597 }
4598 else if (htab->is_vxworks
4599 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4600 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4601 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4602 {
4603 if (stt_regidx == -1)
4604 {
4605 stt_regidx =
4606 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4607 if (stt_regidx == -1)
4608 return FALSE;
4609 }
4610 dyn.d_un.d_val = stt_regidx++;
4611 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4612 }
4613 else
4614 {
4615 switch (dyn.d_tag)
4616 {
4617 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4618 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4619 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4620 default: name = NULL; size = FALSE; break;
4621 }
4622
4623 if (name != NULL)
4624 {
4625 asection *s;
4626
4627 s = bfd_get_section_by_name (output_bfd, name);
4628 if (s == NULL)
4629 dyn.d_un.d_val = 0;
4630 else
4631 {
4632 if (! size)
4633 dyn.d_un.d_ptr = s->vma;
4634 else
4635 dyn.d_un.d_val = s->size;
4636 }
4637 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4638 }
4639 }
4640 }
4641 return TRUE;
4642 }
4643
4644 /* Install the first PLT entry in a VxWorks executable and make sure that
4645 .rela.plt.unloaded relocations have the correct symbol indexes. */
4646
4647 static void
4648 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4649 {
4650 struct _bfd_sparc_elf_link_hash_table *htab;
4651 Elf_Internal_Rela rela;
4652 bfd_vma got_base;
4653 bfd_byte *loc;
4654
4655 htab = _bfd_sparc_elf_hash_table (info);
4656 BFD_ASSERT (htab != NULL);
4657
4658 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4659 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4660 + htab->elf.hgot->root.u.def.section->output_offset
4661 + htab->elf.hgot->root.u.def.value);
4662
4663 /* Install the initial PLT entry. */
4664 bfd_put_32 (output_bfd,
4665 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4666 htab->elf.splt->contents);
4667 bfd_put_32 (output_bfd,
4668 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4669 htab->elf.splt->contents + 4);
4670 bfd_put_32 (output_bfd,
4671 sparc_vxworks_exec_plt0_entry[2],
4672 htab->elf.splt->contents + 8);
4673 bfd_put_32 (output_bfd,
4674 sparc_vxworks_exec_plt0_entry[3],
4675 htab->elf.splt->contents + 12);
4676 bfd_put_32 (output_bfd,
4677 sparc_vxworks_exec_plt0_entry[4],
4678 htab->elf.splt->contents + 16);
4679
4680 loc = htab->srelplt2->contents;
4681
4682 /* Add an unloaded relocation for the initial entry's "sethi". */
4683 rela.r_offset = (htab->elf.splt->output_section->vma
4684 + htab->elf.splt->output_offset);
4685 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4686 rela.r_addend = 8;
4687 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4688 loc += sizeof (Elf32_External_Rela);
4689
4690 /* Likewise the following "or". */
4691 rela.r_offset += 4;
4692 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4693 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4694 loc += sizeof (Elf32_External_Rela);
4695
4696 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4697 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4698 in which symbols were output. */
4699 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4700 {
4701 Elf_Internal_Rela rel;
4702
4703 /* The entry's initial "sethi" (against _G_O_T_). */
4704 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4705 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4706 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4707 loc += sizeof (Elf32_External_Rela);
4708
4709 /* The following "or" (also against _G_O_T_). */
4710 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4711 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4712 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4713 loc += sizeof (Elf32_External_Rela);
4714
4715 /* The .got.plt entry (against _P_L_T_). */
4716 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4717 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4718 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4719 loc += sizeof (Elf32_External_Rela);
4720 }
4721 }
4722
4723 /* Install the first PLT entry in a VxWorks shared object. */
4724
4725 static void
4726 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4727 {
4728 struct _bfd_sparc_elf_link_hash_table *htab;
4729 unsigned int i;
4730
4731 htab = _bfd_sparc_elf_hash_table (info);
4732 BFD_ASSERT (htab != NULL);
4733
4734 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4735 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4736 htab->elf.splt->contents + i * 4);
4737 }
4738
4739 /* Finish up local dynamic symbol handling. We set the contents of
4740 various dynamic sections here. */
4741
4742 static bfd_boolean
4743 finish_local_dynamic_symbol (void **slot, void *inf)
4744 {
4745 struct elf_link_hash_entry *h
4746 = (struct elf_link_hash_entry *) *slot;
4747 struct bfd_link_info *info
4748 = (struct bfd_link_info *) inf;
4749
4750 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4751 h, NULL);
4752 }
4753
4754 bfd_boolean
4755 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4756 {
4757 bfd *dynobj;
4758 asection *sdyn;
4759 struct _bfd_sparc_elf_link_hash_table *htab;
4760
4761 htab = _bfd_sparc_elf_hash_table (info);
4762 BFD_ASSERT (htab != NULL);
4763 dynobj = htab->elf.dynobj;
4764
4765 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4766
4767 if (elf_hash_table (info)->dynamic_sections_created)
4768 {
4769 asection *splt;
4770
4771 splt = htab->elf.splt;
4772 BFD_ASSERT (splt != NULL && sdyn != NULL);
4773
4774 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4775 return FALSE;
4776
4777 /* Initialize the contents of the .plt section. */
4778 if (splt->size > 0)
4779 {
4780 if (htab->is_vxworks)
4781 {
4782 if (info->shared)
4783 sparc_vxworks_finish_shared_plt (output_bfd, info);
4784 else
4785 sparc_vxworks_finish_exec_plt (output_bfd, info);
4786 }
4787 else
4788 {
4789 memset (splt->contents, 0, htab->plt_header_size);
4790 if (!ABI_64_P (output_bfd))
4791 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4792 splt->contents + splt->size - 4);
4793 }
4794 }
4795
4796 if (elf_section_data (splt->output_section) != NULL)
4797 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4798 = ((htab->is_vxworks || !ABI_64_P (output_bfd))
4799 ? 0 : htab->plt_entry_size);
4800 }
4801
4802 /* Set the first entry in the global offset table to the address of
4803 the dynamic section. */
4804 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4805 {
4806 bfd_vma val = (sdyn ?
4807 sdyn->output_section->vma + sdyn->output_offset :
4808 0);
4809
4810 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4811 }
4812
4813 if (htab->elf.sgot)
4814 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4815 SPARC_ELF_WORD_BYTES (htab);
4816
4817 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4818 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4819
4820 return TRUE;
4821 }
4822
4823 \f
4824 /* Set the right machine number for a SPARC ELF file. */
4825
4826 bfd_boolean
4827 _bfd_sparc_elf_object_p (bfd *abfd)
4828 {
4829 if (ABI_64_P (abfd))
4830 {
4831 unsigned long mach = bfd_mach_sparc_v9;
4832
4833 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4834 mach = bfd_mach_sparc_v9b;
4835 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4836 mach = bfd_mach_sparc_v9a;
4837 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4838 }
4839 else
4840 {
4841 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4842 {
4843 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4844 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4845 bfd_mach_sparc_v8plusb);
4846 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4847 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4848 bfd_mach_sparc_v8plusa);
4849 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4850 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4851 bfd_mach_sparc_v8plus);
4852 else
4853 return FALSE;
4854 }
4855 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4856 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4857 bfd_mach_sparc_sparclite_le);
4858 else
4859 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4860 }
4861 }
4862
4863 /* Return address for Ith PLT stub in section PLT, for relocation REL
4864 or (bfd_vma) -1 if it should not be included. */
4865
4866 bfd_vma
4867 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4868 {
4869 if (ABI_64_P (plt->owner))
4870 {
4871 bfd_vma j;
4872
4873 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4874 if (i < PLT64_LARGE_THRESHOLD)
4875 return plt->vma + i * PLT64_ENTRY_SIZE;
4876
4877 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4878 i -= j;
4879 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4880 }
4881 else
4882 return rel->address;
4883 }
4884
4885 /* Merge backend specific data from an object file to the output
4886 object file when linking. */
4887
4888 bfd_boolean
4889 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4890 {
4891 obj_attribute *in_attr, *in_attrs;
4892 obj_attribute *out_attr, *out_attrs;
4893
4894 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4895 {
4896 /* This is the first object. Copy the attributes. */
4897 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4898
4899 /* Use the Tag_null value to indicate the attributes have been
4900 initialized. */
4901 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4902
4903 return TRUE;
4904 }
4905
4906 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4907 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4908
4909 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4910 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4911
4912 out_attr->i |= in_attr->i;
4913 out_attr->type = 1;
4914
4915 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4916 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4917
4918 out_attr->i |= in_attr->i;
4919 out_attr->type = 1;
4920
4921
4922 /* Merge Tag_compatibility attributes and any common GNU ones. */
4923 _bfd_elf_merge_object_attributes (ibfd, obfd);
4924
4925 return TRUE;
4926 }
GDB Binutils - Deliverables
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