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Add support for DragonFlyBSD target.
[binutils.git] / bfd / elfxx-sparc.c
blobf0f79070a368f65c1608ca4a23bdc2ca3e8a74f7
1 /* SPARC-specific support for ELF
2 Copyright 2005, 2006, 2007, 2008, 2009, 2010 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 PTR 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 PTR 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 PTR 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 HIX22 reloc. */
135
136 static bfd_reloc_status_type
137 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 PTR 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 relocation ^= MINUS_ONE;
151 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
152 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
153
154 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
155 return bfd_reloc_overflow;
156 else
157 return bfd_reloc_ok;
158 }
159
160 /* Handle the LOX10 reloc. */
161
162 static bfd_reloc_status_type
163 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
164 PTR data, asection *input_section, bfd *output_bfd,
165 char **error_message ATTRIBUTE_UNUSED)
166 {
167 bfd_vma relocation;
168 bfd_vma insn;
169 bfd_reloc_status_type status;
170
171 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
172 input_section, output_bfd, &relocation, &insn);
173 if (status != bfd_reloc_other)
174 return status;
175
176 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
177 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
178
179 return bfd_reloc_ok;
180 }
181
182 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
183 {
184 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
185 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
186 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
187 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
188 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
189 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
190 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
191 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
192 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
193 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
194 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
195 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
196 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
197 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
198 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
199 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
200 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
201 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
202 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
203 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
204 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),
205 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),
206 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
207 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
208 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
209 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
210 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
211 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
212 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
213 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
214 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
215 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
216 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
217 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
218 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
219 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
220 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
221 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),
222 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),
223 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),
224 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
225 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
226 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),
227 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
228 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
229 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
230 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
231 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
232 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
233 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
234 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
235 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
236 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
237 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
238 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
239 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
240 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),
241 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),
242 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),
243 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),
244 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),
245 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),
246 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),
247 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),
248 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),
249 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),
250 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),
251 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),
252 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),
253 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),
254 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),
255 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),
256 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),
257 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),
258 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),
259 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),
260 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),
261 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),
262 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),
263 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),
264 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),
265 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),
266 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),
267 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),
268 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),
269 };
270 static reloc_howto_type sparc_jmp_irel_howto =
271 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);
272 static reloc_howto_type sparc_irelative_howto =
273 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
274 static reloc_howto_type sparc_vtinherit_howto =
275 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
276 static reloc_howto_type sparc_vtentry_howto =
277 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);
278 static reloc_howto_type sparc_rev32_howto =
279 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
280
281 reloc_howto_type *
282 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
283 bfd_reloc_code_real_type code)
284 {
285 /* We explicitly handle each relocation type in the switch
286 instead of using a lookup table for efficiency. */
287 switch (code)
288 {
289 case BFD_RELOC_NONE:
290 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
291
292 case BFD_RELOC_8:
293 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
294
295 case BFD_RELOC_16:
296 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
297
298 case BFD_RELOC_32:
299 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
300
301 case BFD_RELOC_8_PCREL:
302 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
303
304 case BFD_RELOC_16_PCREL:
305 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
306
307 case BFD_RELOC_32_PCREL:
308 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
309
310 case BFD_RELOC_32_PCREL_S2:
311 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
312
313 case BFD_RELOC_SPARC_WDISP22:
314 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
315
316 case BFD_RELOC_HI22:
317 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
318
319 case BFD_RELOC_SPARC22:
320 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
321
322 case BFD_RELOC_SPARC13:
323 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
324
325 case BFD_RELOC_LO10:
326 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
327
328 case BFD_RELOC_SPARC_GOT10:
329 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
330
331 case BFD_RELOC_SPARC_GOT13:
332 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
333
334 case BFD_RELOC_SPARC_GOT22:
335 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
336
337 case BFD_RELOC_SPARC_PC10:
338 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
339
340 case BFD_RELOC_SPARC_PC22:
341 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
342
343 case BFD_RELOC_SPARC_WPLT30:
344 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
345
346 case BFD_RELOC_SPARC_COPY:
347 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
348
349 case BFD_RELOC_SPARC_GLOB_DAT:
350 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
351
352 case BFD_RELOC_SPARC_JMP_SLOT:
353 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
354
355 case BFD_RELOC_SPARC_RELATIVE:
356 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
357
358 case BFD_RELOC_SPARC_UA32:
359 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
360
361 case BFD_RELOC_SPARC_PLT32:
362 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
363
364 case BFD_RELOC_SPARC_10:
365 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
366
367 case BFD_RELOC_SPARC_11:
368 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
369
370 case BFD_RELOC_SPARC_64:
371 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
372
373 case BFD_RELOC_SPARC_OLO10:
374 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
375
376 case BFD_RELOC_SPARC_HH22:
377 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
378
379 case BFD_RELOC_SPARC_HM10:
380 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
381
382 case BFD_RELOC_SPARC_LM22:
383 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
384
385 case BFD_RELOC_SPARC_PC_HH22:
386 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
387
388 case BFD_RELOC_SPARC_PC_HM10:
389 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
390
391 case BFD_RELOC_SPARC_PC_LM22:
392 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
393
394 case BFD_RELOC_SPARC_WDISP16:
395 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
396
397 case BFD_RELOC_SPARC_WDISP19:
398 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
399
400 case BFD_RELOC_SPARC_7:
401 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
402
403 case BFD_RELOC_SPARC_5:
404 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
405
406 case BFD_RELOC_SPARC_6:
407 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
408
409 case BFD_RELOC_SPARC_DISP64:
410 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
411
412 case BFD_RELOC_SPARC_PLT64:
413 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
414
415 case BFD_RELOC_SPARC_HIX22:
416 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
417
418 case BFD_RELOC_SPARC_LOX10:
419 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
420
421 case BFD_RELOC_SPARC_H44:
422 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
423
424 case BFD_RELOC_SPARC_M44:
425 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
426
427 case BFD_RELOC_SPARC_L44:
428 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
429
430 case BFD_RELOC_SPARC_REGISTER:
431 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
432
433 case BFD_RELOC_SPARC_UA64:
434 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
435
436 case BFD_RELOC_SPARC_UA16:
437 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
438
439 case BFD_RELOC_SPARC_TLS_GD_HI22:
440 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
441
442 case BFD_RELOC_SPARC_TLS_GD_LO10:
443 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
444
445 case BFD_RELOC_SPARC_TLS_GD_ADD:
446 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
447
448 case BFD_RELOC_SPARC_TLS_GD_CALL:
449 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
450
451 case BFD_RELOC_SPARC_TLS_LDM_HI22:
452 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
453
454 case BFD_RELOC_SPARC_TLS_LDM_LO10:
455 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
456
457 case BFD_RELOC_SPARC_TLS_LDM_ADD:
458 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
459
460 case BFD_RELOC_SPARC_TLS_LDM_CALL:
461 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
462
463 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
464 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
465
466 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
467 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
468
469 case BFD_RELOC_SPARC_TLS_LDO_ADD:
470 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
471
472 case BFD_RELOC_SPARC_TLS_IE_HI22:
473 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
474
475 case BFD_RELOC_SPARC_TLS_IE_LO10:
476 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
477
478 case BFD_RELOC_SPARC_TLS_IE_LD:
479 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
480
481 case BFD_RELOC_SPARC_TLS_IE_LDX:
482 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
483
484 case BFD_RELOC_SPARC_TLS_IE_ADD:
485 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
486
487 case BFD_RELOC_SPARC_TLS_LE_HIX22:
488 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
489
490 case BFD_RELOC_SPARC_TLS_LE_LOX10:
491 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
492
493 case BFD_RELOC_SPARC_TLS_DTPMOD32:
494 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
495
496 case BFD_RELOC_SPARC_TLS_DTPMOD64:
497 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
498
499 case BFD_RELOC_SPARC_TLS_DTPOFF32:
500 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
501
502 case BFD_RELOC_SPARC_TLS_DTPOFF64:
503 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
504
505 case BFD_RELOC_SPARC_TLS_TPOFF32:
506 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
507
508 case BFD_RELOC_SPARC_TLS_TPOFF64:
509 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
510
511 case BFD_RELOC_SPARC_GOTDATA_HIX22:
512 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
513
514 case BFD_RELOC_SPARC_GOTDATA_LOX10:
515 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
516
517 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
518 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
519
520 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
521 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
522
523 case BFD_RELOC_SPARC_GOTDATA_OP:
524 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
525
526 case BFD_RELOC_SPARC_JMP_IREL:
527 return &sparc_jmp_irel_howto;
528
529 case BFD_RELOC_SPARC_IRELATIVE:
530 return &sparc_irelative_howto;
531
532 case BFD_RELOC_VTABLE_INHERIT:
533 return &sparc_vtinherit_howto;
534
535 case BFD_RELOC_VTABLE_ENTRY:
536 return &sparc_vtentry_howto;
537
538 case BFD_RELOC_SPARC_REV32:
539 return &sparc_rev32_howto;
540
541 default:
542 break;
543 }
544 bfd_set_error (bfd_error_bad_value);
545 return NULL;
546 }
547
548 reloc_howto_type *
549 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
550 const char *r_name)
551 {
552 unsigned int i;
553
554 for (i = 0;
555 i < (sizeof (_bfd_sparc_elf_howto_table)
556 / sizeof (_bfd_sparc_elf_howto_table[0]));
557 i++)
558 if (_bfd_sparc_elf_howto_table[i].name != NULL
559 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
560 return &_bfd_sparc_elf_howto_table[i];
561
562 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
563 return &sparc_vtinherit_howto;
564 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
565 return &sparc_vtentry_howto;
566 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
567 return &sparc_rev32_howto;
568
569 return NULL;
570 }
571
572 reloc_howto_type *
573 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
574 {
575 switch (r_type)
576 {
577 case R_SPARC_JMP_IREL:
578 return &sparc_jmp_irel_howto;
579
580 case R_SPARC_IRELATIVE:
581 return &sparc_irelative_howto;
582
583 case R_SPARC_GNU_VTINHERIT:
584 return &sparc_vtinherit_howto;
585
586 case R_SPARC_GNU_VTENTRY:
587 return &sparc_vtentry_howto;
588
589 case R_SPARC_REV32:
590 return &sparc_rev32_howto;
591
592 default:
593 if (r_type >= (unsigned int) R_SPARC_max_std)
594 {
595 (*_bfd_error_handler) (_("invalid relocation type %d"),
596 (int) r_type);
597 r_type = R_SPARC_NONE;
598 }
599 return &_bfd_sparc_elf_howto_table[r_type];
600 }
601 }
602
603 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
604 so just take advantage of that. */
605 #define SPARC_ELF_R_TYPE(r_info) \
606 ((r_info) & 0xff)
607
608 void
609 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
610 Elf_Internal_Rela *dst)
611 {
612 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
613
614 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
615 }
616 \f
617
618 /* The nop opcode we use. */
619 #define SPARC_NOP 0x01000000
620
621 #define SPARC_INSN_BYTES 4
622
623 /* The SPARC linker needs to keep track of the number of relocs that it
624 decides to copy as dynamic relocs in check_relocs for each symbol.
625 This is so that it can later discard them if they are found to be
626 unnecessary. We store the information in a field extending the
627 regular ELF linker hash table. */
628
629 struct _bfd_sparc_elf_dyn_relocs
630 {
631 struct _bfd_sparc_elf_dyn_relocs *next;
632
633 /* The input section of the reloc. */
634 asection *sec;
635
636 /* Total number of relocs copied for the input section. */
637 bfd_size_type count;
638
639 /* Number of pc-relative relocs copied for the input section. */
640 bfd_size_type pc_count;
641 };
642
643 /* SPARC ELF linker hash entry. */
644
645 struct _bfd_sparc_elf_link_hash_entry
646 {
647 struct elf_link_hash_entry elf;
648
649 /* Track dynamic relocs copied for this symbol. */
650 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
651
652 #define GOT_UNKNOWN 0
653 #define GOT_NORMAL 1
654 #define GOT_TLS_GD 2
655 #define GOT_TLS_IE 3
656 unsigned char tls_type;
657 };
658
659 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
660
661 struct _bfd_sparc_elf_obj_tdata
662 {
663 struct elf_obj_tdata root;
664
665 /* tls_type for each local got entry. */
666 char *local_got_tls_type;
667
668 /* TRUE if TLS GD relocs has been seen for this object. */
669 bfd_boolean has_tlsgd;
670 };
671
672 #define _bfd_sparc_elf_tdata(abfd) \
673 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
674
675 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
676 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
677
678 #define is_sparc_elf(bfd) \
679 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
680 && elf_tdata (bfd) != NULL \
681 && elf_object_id (bfd) == SPARC_ELF_DATA)
682
683 bfd_boolean
684 _bfd_sparc_elf_mkobject (bfd *abfd)
685 {
686 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
687 SPARC_ELF_DATA);
688 }
689
690 static void
691 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
692 {
693 bfd_put_32 (abfd, val, ptr);
694 }
695
696 static void
697 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
698 {
699 bfd_put_64 (abfd, val, ptr);
700 }
701
702 static void
703 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
704 {
705 const struct elf_backend_data *bed;
706 bfd_byte *loc;
707
708 bed = get_elf_backend_data (abfd);
709 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
710 bed->s->swap_reloca_out (abfd, rel, loc);
711 }
712
713 static bfd_vma
714 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
715 bfd_vma rel_index ATTRIBUTE_UNUSED,
716 bfd_vma type ATTRIBUTE_UNUSED)
717 {
718 return ELF64_R_INFO (rel_index,
719 (in_rel ?
720 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
721 type) : type));
722 }
723
724 static bfd_vma
725 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
726 bfd_vma rel_index, bfd_vma type)
727 {
728 return ELF32_R_INFO (rel_index, type);
729 }
730
731 static bfd_vma
732 sparc_elf_r_symndx_64 (bfd_vma r_info)
733 {
734 bfd_vma r_symndx = ELF32_R_SYM (r_info);
735 return (r_symndx >> 24);
736 }
737
738 static bfd_vma
739 sparc_elf_r_symndx_32 (bfd_vma r_info)
740 {
741 return ELF32_R_SYM (r_info);
742 }
743
744 /* PLT/GOT stuff */
745
746 #define PLT32_ENTRY_SIZE 12
747 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
748
749 /* The first four entries in a 32-bit procedure linkage table are reserved,
750 and the initial contents are unimportant (we zero them out).
751 Subsequent entries look like this. See the SVR4 ABI SPARC
752 supplement to see how this works. */
753
754 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
755 #define PLT32_ENTRY_WORD0 0x03000000
756 /* b,a .plt0. We fill in the offset later. */
757 #define PLT32_ENTRY_WORD1 0x30800000
758 /* nop. */
759 #define PLT32_ENTRY_WORD2 SPARC_NOP
760
761 static int
762 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
763 bfd_vma max ATTRIBUTE_UNUSED,
764 bfd_vma *r_offset)
765 {
766 bfd_put_32 (output_bfd,
767 PLT32_ENTRY_WORD0 + offset,
768 splt->contents + offset);
769 bfd_put_32 (output_bfd,
770 (PLT32_ENTRY_WORD1
771 + (((- (offset + 4)) >> 2) & 0x3fffff)),
772 splt->contents + offset + 4);
773 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
774 splt->contents + offset + 8);
775
776 *r_offset = offset;
777
778 return offset / PLT32_ENTRY_SIZE - 4;
779 }
780
781 /* Both the headers and the entries are icache aligned. */
782 #define PLT64_ENTRY_SIZE 32
783 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
784 #define PLT64_LARGE_THRESHOLD 32768
785
786 static int
787 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
788 bfd_vma max, bfd_vma *r_offset)
789 {
790 unsigned char *entry = splt->contents + offset;
791 const unsigned int nop = SPARC_NOP;
792 int plt_index;
793
794 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
795 {
796 unsigned int sethi, ba;
797
798 *r_offset = offset;
799
800 plt_index = (offset / PLT64_ENTRY_SIZE);
801
802 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
803 ba = 0x30680000
804 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
805
806 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
807 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
808 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
809 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
810 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
811 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
812 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
813 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
814 }
815 else
816 {
817 unsigned char *ptr;
818 unsigned int ldx;
819 int block, last_block, ofs, last_ofs, chunks_this_block;
820 const int insn_chunk_size = (6 * 4);
821 const int ptr_chunk_size = (1 * 8);
822 const int entries_per_block = 160;
823 const int block_size = entries_per_block * (insn_chunk_size
824 + ptr_chunk_size);
825
826 /* Entries 32768 and higher are grouped into blocks of 160.
827 The blocks are further subdivided into 160 sequences of
828 6 instructions and 160 pointers. If a block does not require
829 the full 160 entries, let's say it requires N, then there
830 will be N sequences of 6 instructions and N pointers. */
831
832 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
833 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
834
835 block = offset / block_size;
836 last_block = max / block_size;
837 if (block != last_block)
838 {
839 chunks_this_block = 160;
840 }
841 else
842 {
843 last_ofs = max % block_size;
844 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
845 }
846
847 ofs = offset % block_size;
848
849 plt_index = (PLT64_LARGE_THRESHOLD +
850 (block * 160) +
851 (ofs / insn_chunk_size));
852
853 ptr = splt->contents
854 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
855 + (block * block_size)
856 + (chunks_this_block * insn_chunk_size)
857 + (ofs / insn_chunk_size) * ptr_chunk_size;
858
859 *r_offset = (bfd_vma) (ptr - splt->contents);
860
861 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
862
863 /* mov %o7,%g5
864 call .+8
865 nop
866 ldx [%o7+P],%g1
867 jmpl %o7+%g1,%g1
868 mov %g5,%o7 */
869 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
870 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
871 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
872 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
873 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
874 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
875
876 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
877 }
878
879 return plt_index - 4;
880 }
881
882 /* The format of the first PLT entry in a VxWorks executable. */
883 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
884 {
885 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
886 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
887 0xc4008000, /* ld [ %g2 ], %g2 */
888 0x81c08000, /* jmp %g2 */
889 0x01000000 /* nop */
890 };
891
892 /* The format of subsequent PLT entries. */
893 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
894 {
895 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
896 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
897 0xc2004000, /* ld [ %g1 ], %g1 */
898 0x81c04000, /* jmp %g1 */
899 0x01000000, /* nop */
900 0x03000000, /* sethi %hi(f@pltindex), %g1 */
901 0x10800000, /* b _PLT_resolve */
902 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
903 };
904
905 /* The format of the first PLT entry in a VxWorks shared object. */
906 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
907 {
908 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
909 0x81c08000, /* jmp %g2 */
910 0x01000000 /* nop */
911 };
912
913 /* The format of subsequent PLT entries. */
914 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
915 {
916 0x03000000, /* sethi %hi(f@got), %g1 */
917 0x82106000, /* or %g1, %lo(f@got), %g1 */
918 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
919 0x81c04000, /* jmp %g1 */
920 0x01000000, /* nop */
921 0x03000000, /* sethi %hi(f@pltindex), %g1 */
922 0x10800000, /* b _PLT_resolve */
923 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
924 };
925
926 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
927 htab->put_word(bfd, val, ptr)
928
929 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
930 htab->r_info(in_rel, index, type)
931
932 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
933 htab->r_symndx(r_info)
934
935 #define SPARC_ELF_WORD_BYTES(htab) \
936 htab->bytes_per_word
937
938 #define SPARC_ELF_RELA_BYTES(htab) \
939 htab->bytes_per_rela
940
941 #define SPARC_ELF_DTPOFF_RELOC(htab) \
942 htab->dtpoff_reloc
943
944 #define SPARC_ELF_DTPMOD_RELOC(htab) \
945 htab->dtpmod_reloc
946
947 #define SPARC_ELF_TPOFF_RELOC(htab) \
948 htab->tpoff_reloc
949
950 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
951 htab->build_plt_entry (obfd, splt, off, max, r_off)
952
953 /* Create an entry in an SPARC ELF linker hash table. */
954
955 static struct bfd_hash_entry *
956 link_hash_newfunc (struct bfd_hash_entry *entry,
957 struct bfd_hash_table *table, const char *string)
958 {
959 /* Allocate the structure if it has not already been allocated by a
960 subclass. */
961 if (entry == NULL)
962 {
963 entry = bfd_hash_allocate (table,
964 sizeof (struct _bfd_sparc_elf_link_hash_entry));
965 if (entry == NULL)
966 return entry;
967 }
968
969 /* Call the allocation method of the superclass. */
970 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
971 if (entry != NULL)
972 {
973 struct _bfd_sparc_elf_link_hash_entry *eh;
974
975 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
976 eh->dyn_relocs = NULL;
977 eh->tls_type = GOT_UNKNOWN;
978 }
979
980 return entry;
981 }
982
983 /* The name of the dynamic interpreter. This is put in the .interp
984 section. */
985
986 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
987 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
988
989 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
990 for local symbol so that we can handle local STT_GNU_IFUNC symbols
991 as global symbol. We reuse indx and dynstr_index for local symbol
992 hash since they aren't used by global symbols in this backend. */
993
994 static hashval_t
995 elf_sparc_local_htab_hash (const void *ptr)
996 {
997 struct elf_link_hash_entry *h
998 = (struct elf_link_hash_entry *) ptr;
999 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1000 }
1001
1002 /* Compare local hash entries. */
1003
1004 static int
1005 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1006 {
1007 struct elf_link_hash_entry *h1
1008 = (struct elf_link_hash_entry *) ptr1;
1009 struct elf_link_hash_entry *h2
1010 = (struct elf_link_hash_entry *) ptr2;
1011
1012 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1013 }
1014
1015 /* Find and/or create a hash entry for local symbol. */
1016
1017 static struct elf_link_hash_entry *
1018 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1019 bfd *abfd, const Elf_Internal_Rela *rel,
1020 bfd_boolean create)
1021 {
1022 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1023 asection *sec = abfd->sections;
1024 unsigned long r_symndx;
1025 hashval_t h;
1026 void **slot;
1027
1028 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1029 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1030
1031 e.elf.indx = sec->id;
1032 e.elf.dynstr_index = r_symndx;
1033 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1034 create ? INSERT : NO_INSERT);
1035
1036 if (!slot)
1037 return NULL;
1038
1039 if (*slot)
1040 {
1041 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1042 return &ret->elf;
1043 }
1044
1045 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1046 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1047 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1048 if (ret)
1049 {
1050 memset (ret, 0, sizeof (*ret));
1051 ret->elf.indx = sec->id;
1052 ret->elf.dynstr_index = r_symndx;
1053 ret->elf.dynindx = -1;
1054 ret->elf.plt.offset = (bfd_vma) -1;
1055 ret->elf.got.offset = (bfd_vma) -1;
1056 *slot = ret;
1057 }
1058 return &ret->elf;
1059 }
1060
1061 /* Create a SPARC ELF linker hash table. */
1062
1063 struct bfd_link_hash_table *
1064 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1065 {
1066 struct _bfd_sparc_elf_link_hash_table *ret;
1067 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1068
1069 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1070 if (ret == NULL)
1071 return NULL;
1072
1073 if (ABI_64_P (abfd))
1074 {
1075 ret->put_word = sparc_put_word_64;
1076 ret->r_info = sparc_elf_r_info_64;
1077 ret->r_symndx = sparc_elf_r_symndx_64;
1078 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1079 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1080 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1081 ret->word_align_power = 3;
1082 ret->align_power_max = 4;
1083 ret->bytes_per_word = 8;
1084 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1085 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1086 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1087
1088 ret->build_plt_entry = sparc64_plt_entry_build;
1089 ret->plt_header_size = PLT64_HEADER_SIZE;
1090 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1091 }
1092 else
1093 {
1094 ret->put_word = sparc_put_word_32;
1095 ret->r_info = sparc_elf_r_info_32;
1096 ret->r_symndx = sparc_elf_r_symndx_32;
1097 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1098 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1099 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1100 ret->word_align_power = 2;
1101 ret->align_power_max = 3;
1102 ret->bytes_per_word = 4;
1103 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1104 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1105 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1106
1107 ret->build_plt_entry = sparc32_plt_entry_build;
1108 ret->plt_header_size = PLT32_HEADER_SIZE;
1109 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1110 }
1111
1112 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1113 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1114 SPARC_ELF_DATA))
1115 {
1116 free (ret);
1117 return NULL;
1118 }
1119
1120 ret->loc_hash_table = htab_try_create (1024,
1121 elf_sparc_local_htab_hash,
1122 elf_sparc_local_htab_eq,
1123 NULL);
1124 ret->loc_hash_memory = objalloc_create ();
1125 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1126 {
1127 free (ret);
1128 return NULL;
1129 }
1130
1131 return &ret->elf.root;
1132 }
1133
1134 /* Destroy a SPARC ELF linker hash table. */
1135
1136 void
1137 _bfd_sparc_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
1138 {
1139 struct _bfd_sparc_elf_link_hash_table *htab
1140 = (struct _bfd_sparc_elf_link_hash_table *) hash;
1141
1142 if (htab->loc_hash_table)
1143 htab_delete (htab->loc_hash_table);
1144 if (htab->loc_hash_memory)
1145 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1146 _bfd_generic_link_hash_table_free (hash);
1147 }
1148
1149 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1150 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1151 hash table. */
1152
1153 bfd_boolean
1154 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1155 struct bfd_link_info *info)
1156 {
1157 struct _bfd_sparc_elf_link_hash_table *htab;
1158
1159 htab = _bfd_sparc_elf_hash_table (info);
1160 BFD_ASSERT (htab != NULL);
1161
1162 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1163 return FALSE;
1164
1165 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1166 if (!info->shared)
1167 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1168
1169 if (htab->is_vxworks)
1170 {
1171 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1172 return FALSE;
1173 if (info->shared)
1174 {
1175 htab->plt_header_size
1176 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1177 htab->plt_entry_size
1178 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1179 }
1180 else
1181 {
1182 htab->plt_header_size
1183 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1184 htab->plt_entry_size
1185 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1186 }
1187 }
1188
1189 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1190 || (!info->shared && !htab->srelbss))
1191 abort ();
1192
1193 return TRUE;
1194 }
1195
1196 static bfd_boolean
1197 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1198 {
1199 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1200 struct elf_link_hash_table *htab = elf_hash_table (info);
1201 flagword flags, pltflags;
1202 asection *s;
1203
1204 if (htab->irelifunc != NULL || htab->iplt != NULL)
1205 return TRUE;
1206
1207 flags = bed->dynamic_sec_flags;
1208 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1209
1210 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1211 if (s == NULL
1212 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1213 return FALSE;
1214 htab->iplt = s;
1215
1216 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1217 flags | SEC_READONLY);
1218 if (s == NULL
1219 || ! bfd_set_section_alignment (abfd, s,
1220 bed->s->log_file_align))
1221 return FALSE;
1222 htab->irelplt = s;
1223
1224 return TRUE;
1225 }
1226
1227 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1228
1229 void
1230 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1231 struct elf_link_hash_entry *dir,
1232 struct elf_link_hash_entry *ind)
1233 {
1234 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1235
1236 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1237 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1238
1239 if (eind->dyn_relocs != NULL)
1240 {
1241 if (edir->dyn_relocs != NULL)
1242 {
1243 struct _bfd_sparc_elf_dyn_relocs **pp;
1244 struct _bfd_sparc_elf_dyn_relocs *p;
1245
1246 /* Add reloc counts against the indirect sym to the direct sym
1247 list. Merge any entries against the same section. */
1248 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1249 {
1250 struct _bfd_sparc_elf_dyn_relocs *q;
1251
1252 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1253 if (q->sec == p->sec)
1254 {
1255 q->pc_count += p->pc_count;
1256 q->count += p->count;
1257 *pp = p->next;
1258 break;
1259 }
1260 if (q == NULL)
1261 pp = &p->next;
1262 }
1263 *pp = edir->dyn_relocs;
1264 }
1265
1266 edir->dyn_relocs = eind->dyn_relocs;
1267 eind->dyn_relocs = NULL;
1268 }
1269
1270 if (ind->root.type == bfd_link_hash_indirect
1271 && dir->got.refcount <= 0)
1272 {
1273 edir->tls_type = eind->tls_type;
1274 eind->tls_type = GOT_UNKNOWN;
1275 }
1276 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1277 }
1278
1279 static int
1280 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1281 int r_type, int is_local)
1282 {
1283 if (! ABI_64_P (abfd)
1284 && r_type == R_SPARC_TLS_GD_HI22
1285 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1286 r_type = R_SPARC_REV32;
1287
1288 if (info->shared)
1289 return r_type;
1290
1291 switch (r_type)
1292 {
1293 case R_SPARC_TLS_GD_HI22:
1294 if (is_local)
1295 return R_SPARC_TLS_LE_HIX22;
1296 return R_SPARC_TLS_IE_HI22;
1297 case R_SPARC_TLS_GD_LO10:
1298 if (is_local)
1299 return R_SPARC_TLS_LE_LOX10;
1300 return R_SPARC_TLS_IE_LO10;
1301 case R_SPARC_TLS_IE_HI22:
1302 if (is_local)
1303 return R_SPARC_TLS_LE_HIX22;
1304 return r_type;
1305 case R_SPARC_TLS_IE_LO10:
1306 if (is_local)
1307 return R_SPARC_TLS_LE_LOX10;
1308 return r_type;
1309 case R_SPARC_TLS_LDM_HI22:
1310 return R_SPARC_TLS_LE_HIX22;
1311 case R_SPARC_TLS_LDM_LO10:
1312 return R_SPARC_TLS_LE_LOX10;
1313 }
1314
1315 return r_type;
1316 }
1317 \f
1318 /* Look through the relocs for a section during the first phase, and
1319 allocate space in the global offset table or procedure linkage
1320 table. */
1321
1322 bfd_boolean
1323 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1324 asection *sec, const Elf_Internal_Rela *relocs)
1325 {
1326 struct _bfd_sparc_elf_link_hash_table *htab;
1327 Elf_Internal_Shdr *symtab_hdr;
1328 struct elf_link_hash_entry **sym_hashes;
1329 const Elf_Internal_Rela *rel;
1330 const Elf_Internal_Rela *rel_end;
1331 asection *sreloc;
1332 int num_relocs;
1333 bfd_boolean checked_tlsgd = FALSE;
1334
1335 if (info->relocatable)
1336 return TRUE;
1337
1338 htab = _bfd_sparc_elf_hash_table (info);
1339 BFD_ASSERT (htab != NULL);
1340 symtab_hdr = &elf_symtab_hdr (abfd);
1341 sym_hashes = elf_sym_hashes (abfd);
1342
1343 sreloc = NULL;
1344
1345 if (ABI_64_P (abfd))
1346 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1347 else
1348 num_relocs = sec->reloc_count;
1349
1350 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1351
1352 if (htab->elf.dynobj == NULL)
1353 htab->elf.dynobj = abfd;
1354 if (!create_ifunc_sections (htab->elf.dynobj, info))
1355 return FALSE;
1356
1357 rel_end = relocs + num_relocs;
1358 for (rel = relocs; rel < rel_end; rel++)
1359 {
1360 unsigned int r_type;
1361 unsigned long r_symndx;
1362 struct elf_link_hash_entry *h;
1363 Elf_Internal_Sym *isym;
1364
1365 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1366 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1367
1368 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1369 {
1370 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1371 abfd, r_symndx);
1372 return FALSE;
1373 }
1374
1375 isym = NULL;
1376 if (r_symndx < symtab_hdr->sh_info)
1377 {
1378 /* A local symbol. */
1379 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1380 abfd, r_symndx);
1381 if (isym == NULL)
1382 return FALSE;
1383
1384 /* Check relocation against local STT_GNU_IFUNC symbol. */
1385 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1386 {
1387 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1388 TRUE);
1389 if (h == NULL)
1390 return FALSE;
1391
1392 /* Fake a STT_GNU_IFUNC symbol. */
1393 h->type = STT_GNU_IFUNC;
1394 h->def_regular = 1;
1395 h->ref_regular = 1;
1396 h->forced_local = 1;
1397 h->root.type = bfd_link_hash_defined;
1398 }
1399 else
1400 h = NULL;
1401 }
1402 else
1403 {
1404 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1405 while (h->root.type == bfd_link_hash_indirect
1406 || h->root.type == bfd_link_hash_warning)
1407 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1408 }
1409
1410 if (h && h->type == STT_GNU_IFUNC)
1411 {
1412 if (h->def_regular)
1413 {
1414 h->ref_regular = 1;
1415 h->plt.refcount += 1;
1416 }
1417 }
1418
1419 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1420 with R_SPARC_TLS_GD_HI22. */
1421 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1422 switch (r_type)
1423 {
1424 case R_SPARC_TLS_GD_HI22:
1425 {
1426 const Elf_Internal_Rela *relt;
1427
1428 for (relt = rel + 1; relt < rel_end; relt++)
1429 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1430 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1431 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1432 break;
1433 checked_tlsgd = TRUE;
1434 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1435 }
1436 break;
1437 case R_SPARC_TLS_GD_LO10:
1438 case R_SPARC_TLS_GD_ADD:
1439 case R_SPARC_TLS_GD_CALL:
1440 checked_tlsgd = TRUE;
1441 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1442 break;
1443 }
1444
1445 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1446 switch (r_type)
1447 {
1448 case R_SPARC_TLS_LDM_HI22:
1449 case R_SPARC_TLS_LDM_LO10:
1450 htab->tls_ldm_got.refcount += 1;
1451 break;
1452
1453 case R_SPARC_TLS_LE_HIX22:
1454 case R_SPARC_TLS_LE_LOX10:
1455 if (info->shared)
1456 goto r_sparc_plt32;
1457 break;
1458
1459 case R_SPARC_TLS_IE_HI22:
1460 case R_SPARC_TLS_IE_LO10:
1461 if (info->shared)
1462 info->flags |= DF_STATIC_TLS;
1463 /* Fall through */
1464
1465 case R_SPARC_GOT10:
1466 case R_SPARC_GOT13:
1467 case R_SPARC_GOT22:
1468 case R_SPARC_GOTDATA_HIX22:
1469 case R_SPARC_GOTDATA_LOX10:
1470 case R_SPARC_GOTDATA_OP_HIX22:
1471 case R_SPARC_GOTDATA_OP_LOX10:
1472 case R_SPARC_TLS_GD_HI22:
1473 case R_SPARC_TLS_GD_LO10:
1474 /* This symbol requires a global offset table entry. */
1475 {
1476 int tls_type, old_tls_type;
1477
1478 switch (r_type)
1479 {
1480 default:
1481 case R_SPARC_GOT10:
1482 case R_SPARC_GOT13:
1483 case R_SPARC_GOT22:
1484 case R_SPARC_GOTDATA_OP_HIX22:
1485 case R_SPARC_GOTDATA_OP_LOX10:
1486 tls_type = GOT_NORMAL;
1487 break;
1488 case R_SPARC_TLS_GD_HI22:
1489 case R_SPARC_TLS_GD_LO10:
1490 tls_type = GOT_TLS_GD;
1491 break;
1492 case R_SPARC_TLS_IE_HI22:
1493 case R_SPARC_TLS_IE_LO10:
1494 tls_type = GOT_TLS_IE;
1495 break;
1496 }
1497
1498 if (h != NULL)
1499 {
1500 h->got.refcount += 1;
1501 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1502 }
1503 else
1504 {
1505 bfd_signed_vma *local_got_refcounts;
1506
1507 /* This is a global offset table entry for a local symbol. */
1508 local_got_refcounts = elf_local_got_refcounts (abfd);
1509 if (local_got_refcounts == NULL)
1510 {
1511 bfd_size_type size;
1512
1513 size = symtab_hdr->sh_info;
1514 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1515 local_got_refcounts = ((bfd_signed_vma *)
1516 bfd_zalloc (abfd, size));
1517 if (local_got_refcounts == NULL)
1518 return FALSE;
1519 elf_local_got_refcounts (abfd) = local_got_refcounts;
1520 _bfd_sparc_elf_local_got_tls_type (abfd)
1521 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1522 }
1523 switch (r_type)
1524 {
1525 case R_SPARC_GOTDATA_OP_HIX22:
1526 case R_SPARC_GOTDATA_OP_LOX10:
1527 break;
1528
1529 default:
1530 local_got_refcounts[r_symndx] += 1;
1531 break;
1532 }
1533 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1534 }
1535
1536 /* If a TLS symbol is accessed using IE at least once,
1537 there is no point to use dynamic model for it. */
1538 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1539 && (old_tls_type != GOT_TLS_GD
1540 || tls_type != GOT_TLS_IE))
1541 {
1542 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1543 tls_type = old_tls_type;
1544 else
1545 {
1546 (*_bfd_error_handler)
1547 (_("%B: `%s' accessed both as normal and thread local symbol"),
1548 abfd, h ? h->root.root.string : "<local>");
1549 return FALSE;
1550 }
1551 }
1552
1553 if (old_tls_type != tls_type)
1554 {
1555 if (h != NULL)
1556 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1557 else
1558 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1559 }
1560 }
1561
1562 if (htab->elf.sgot == NULL)
1563 {
1564 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1565 return FALSE;
1566 }
1567 break;
1568
1569 case R_SPARC_TLS_GD_CALL:
1570 case R_SPARC_TLS_LDM_CALL:
1571 if (info->shared)
1572 {
1573 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1574 __tls_get_addr. */
1575 struct bfd_link_hash_entry *bh = NULL;
1576 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1577 "__tls_get_addr", 0,
1578 bfd_und_section_ptr, 0,
1579 NULL, FALSE, FALSE,
1580 &bh))
1581 return FALSE;
1582 h = (struct elf_link_hash_entry *) bh;
1583 }
1584 else
1585 break;
1586 /* Fall through */
1587
1588 case R_SPARC_PLT32:
1589 case R_SPARC_WPLT30:
1590 case R_SPARC_HIPLT22:
1591 case R_SPARC_LOPLT10:
1592 case R_SPARC_PCPLT32:
1593 case R_SPARC_PCPLT22:
1594 case R_SPARC_PCPLT10:
1595 case R_SPARC_PLT64:
1596 /* This symbol requires a procedure linkage table entry. We
1597 actually build the entry in adjust_dynamic_symbol,
1598 because this might be a case of linking PIC code without
1599 linking in any dynamic objects, in which case we don't
1600 need to generate a procedure linkage table after all. */
1601
1602 if (h == NULL)
1603 {
1604 if (! ABI_64_P (abfd))
1605 {
1606 /* The Solaris native assembler will generate a WPLT30
1607 reloc for a local symbol if you assemble a call from
1608 one section to another when using -K pic. We treat
1609 it as WDISP30. */
1610 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1611 goto r_sparc_plt32;
1612 break;
1613 }
1614 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1615 else if (r_type == R_SPARC_WPLT30)
1616 break;
1617
1618 /* It does not make sense to have a procedure linkage
1619 table entry for a local symbol. */
1620 bfd_set_error (bfd_error_bad_value);
1621 return FALSE;
1622 }
1623
1624 h->needs_plt = 1;
1625
1626 {
1627 int this_r_type;
1628
1629 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1630 if (this_r_type == R_SPARC_PLT32
1631 || this_r_type == R_SPARC_PLT64)
1632 goto r_sparc_plt32;
1633 }
1634 h->plt.refcount += 1;
1635 break;
1636
1637 case R_SPARC_PC10:
1638 case R_SPARC_PC22:
1639 case R_SPARC_PC_HH22:
1640 case R_SPARC_PC_HM10:
1641 case R_SPARC_PC_LM22:
1642 if (h != NULL)
1643 h->non_got_ref = 1;
1644
1645 if (h != NULL
1646 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1647 break;
1648 /* Fall through. */
1649
1650 case R_SPARC_DISP8:
1651 case R_SPARC_DISP16:
1652 case R_SPARC_DISP32:
1653 case R_SPARC_DISP64:
1654 case R_SPARC_WDISP30:
1655 case R_SPARC_WDISP22:
1656 case R_SPARC_WDISP19:
1657 case R_SPARC_WDISP16:
1658 case R_SPARC_8:
1659 case R_SPARC_16:
1660 case R_SPARC_32:
1661 case R_SPARC_HI22:
1662 case R_SPARC_22:
1663 case R_SPARC_13:
1664 case R_SPARC_LO10:
1665 case R_SPARC_UA16:
1666 case R_SPARC_UA32:
1667 case R_SPARC_10:
1668 case R_SPARC_11:
1669 case R_SPARC_64:
1670 case R_SPARC_OLO10:
1671 case R_SPARC_HH22:
1672 case R_SPARC_HM10:
1673 case R_SPARC_LM22:
1674 case R_SPARC_7:
1675 case R_SPARC_5:
1676 case R_SPARC_6:
1677 case R_SPARC_HIX22:
1678 case R_SPARC_LOX10:
1679 case R_SPARC_H44:
1680 case R_SPARC_M44:
1681 case R_SPARC_L44:
1682 case R_SPARC_UA64:
1683 if (h != NULL)
1684 h->non_got_ref = 1;
1685
1686 r_sparc_plt32:
1687 if (h != NULL && !info->shared)
1688 {
1689 /* We may need a .plt entry if the function this reloc
1690 refers to is in a shared lib. */
1691 h->plt.refcount += 1;
1692 }
1693
1694 /* If we are creating a shared library, and this is a reloc
1695 against a global symbol, or a non PC relative reloc
1696 against a local symbol, then we need to copy the reloc
1697 into the shared library. However, if we are linking with
1698 -Bsymbolic, we do not need to copy a reloc against a
1699 global symbol which is defined in an object we are
1700 including in the link (i.e., DEF_REGULAR is set). At
1701 this point we have not seen all the input files, so it is
1702 possible that DEF_REGULAR is not set now but will be set
1703 later (it is never cleared). In case of a weak definition,
1704 DEF_REGULAR may be cleared later by a strong definition in
1705 a shared library. We account for that possibility below by
1706 storing information in the relocs_copied field of the hash
1707 table entry. A similar situation occurs when creating
1708 shared libraries and symbol visibility changes render the
1709 symbol local.
1710
1711 If on the other hand, we are creating an executable, we
1712 may need to keep relocations for symbols satisfied by a
1713 dynamic library if we manage to avoid copy relocs for the
1714 symbol. */
1715 if ((info->shared
1716 && (sec->flags & SEC_ALLOC) != 0
1717 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1718 || (h != NULL
1719 && (! SYMBOLIC_BIND (info, h)
1720 || h->root.type == bfd_link_hash_defweak
1721 || !h->def_regular))))
1722 || (!info->shared
1723 && (sec->flags & SEC_ALLOC) != 0
1724 && h != NULL
1725 && (h->root.type == bfd_link_hash_defweak
1726 || !h->def_regular))
1727 || (!info->shared
1728 && h != NULL
1729 && h->type == STT_GNU_IFUNC))
1730 {
1731 struct _bfd_sparc_elf_dyn_relocs *p;
1732 struct _bfd_sparc_elf_dyn_relocs **head;
1733
1734 /* When creating a shared object, we must copy these
1735 relocs into the output file. We create a reloc
1736 section in dynobj and make room for the reloc. */
1737 if (sreloc == NULL)
1738 {
1739 sreloc = _bfd_elf_make_dynamic_reloc_section
1740 (sec, htab->elf.dynobj, htab->word_align_power,
1741 abfd, /*rela?*/ TRUE);
1742
1743 if (sreloc == NULL)
1744 return FALSE;
1745 }
1746
1747 /* If this is a global symbol, we count the number of
1748 relocations we need for this symbol. */
1749 if (h != NULL)
1750 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1751 else
1752 {
1753 /* Track dynamic relocs needed for local syms too.
1754 We really need local syms available to do this
1755 easily. Oh well. */
1756 asection *s;
1757 void *vpp;
1758
1759 BFD_ASSERT (isym != NULL);
1760 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1761 if (s == NULL)
1762 s = sec;
1763
1764 vpp = &elf_section_data (s)->local_dynrel;
1765 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1766 }
1767
1768 p = *head;
1769 if (p == NULL || p->sec != sec)
1770 {
1771 bfd_size_type amt = sizeof *p;
1772 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1773 bfd_alloc (htab->elf.dynobj, amt));
1774 if (p == NULL)
1775 return FALSE;
1776 p->next = *head;
1777 *head = p;
1778 p->sec = sec;
1779 p->count = 0;
1780 p->pc_count = 0;
1781 }
1782
1783 p->count += 1;
1784 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1785 p->pc_count += 1;
1786 }
1787
1788 break;
1789
1790 case R_SPARC_GNU_VTINHERIT:
1791 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1792 return FALSE;
1793 break;
1794
1795 case R_SPARC_GNU_VTENTRY:
1796 BFD_ASSERT (h != NULL);
1797 if (h != NULL
1798 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1799 return FALSE;
1800 break;
1801
1802 case R_SPARC_REGISTER:
1803 /* Nothing to do. */
1804 break;
1805
1806 default:
1807 break;
1808 }
1809 }
1810
1811 return TRUE;
1812 }
1813 \f
1814 asection *
1815 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1816 struct bfd_link_info *info,
1817 Elf_Internal_Rela *rel,
1818 struct elf_link_hash_entry *h,
1819 Elf_Internal_Sym *sym)
1820 {
1821 if (h != NULL)
1822 switch (SPARC_ELF_R_TYPE (rel->r_info))
1823 {
1824 case R_SPARC_GNU_VTINHERIT:
1825 case R_SPARC_GNU_VTENTRY:
1826 return NULL;
1827 }
1828
1829 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1830 }
1831
1832 /* Update the got entry reference counts for the section being removed. */
1833 bfd_boolean
1834 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1835 asection *sec, const Elf_Internal_Rela *relocs)
1836 {
1837 struct _bfd_sparc_elf_link_hash_table *htab;
1838 Elf_Internal_Shdr *symtab_hdr;
1839 struct elf_link_hash_entry **sym_hashes;
1840 bfd_signed_vma *local_got_refcounts;
1841 const Elf_Internal_Rela *rel, *relend;
1842
1843 if (info->relocatable)
1844 return TRUE;
1845
1846 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1847
1848 elf_section_data (sec)->local_dynrel = NULL;
1849
1850 htab = _bfd_sparc_elf_hash_table (info);
1851 BFD_ASSERT (htab != NULL);
1852 symtab_hdr = &elf_symtab_hdr (abfd);
1853 sym_hashes = elf_sym_hashes (abfd);
1854 local_got_refcounts = elf_local_got_refcounts (abfd);
1855
1856 relend = relocs + sec->reloc_count;
1857 for (rel = relocs; rel < relend; rel++)
1858 {
1859 unsigned long r_symndx;
1860 unsigned int r_type;
1861 struct elf_link_hash_entry *h = NULL;
1862
1863 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1864 if (r_symndx >= symtab_hdr->sh_info)
1865 {
1866 struct _bfd_sparc_elf_link_hash_entry *eh;
1867 struct _bfd_sparc_elf_dyn_relocs **pp;
1868 struct _bfd_sparc_elf_dyn_relocs *p;
1869
1870 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1871 while (h->root.type == bfd_link_hash_indirect
1872 || h->root.type == bfd_link_hash_warning)
1873 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1874 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1875 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1876 if (p->sec == sec)
1877 {
1878 /* Everything must go for SEC. */
1879 *pp = p->next;
1880 break;
1881 }
1882 }
1883
1884 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1885 r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL);
1886 switch (r_type)
1887 {
1888 case R_SPARC_TLS_LDM_HI22:
1889 case R_SPARC_TLS_LDM_LO10:
1890 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1891 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1892 break;
1893
1894 case R_SPARC_TLS_GD_HI22:
1895 case R_SPARC_TLS_GD_LO10:
1896 case R_SPARC_TLS_IE_HI22:
1897 case R_SPARC_TLS_IE_LO10:
1898 case R_SPARC_GOT10:
1899 case R_SPARC_GOT13:
1900 case R_SPARC_GOT22:
1901 case R_SPARC_GOTDATA_HIX22:
1902 case R_SPARC_GOTDATA_LOX10:
1903 case R_SPARC_GOTDATA_OP_HIX22:
1904 case R_SPARC_GOTDATA_OP_LOX10:
1905 if (h != NULL)
1906 {
1907 if (h->got.refcount > 0)
1908 h->got.refcount--;
1909 }
1910 else
1911 {
1912 switch (r_type)
1913 {
1914 case R_SPARC_GOTDATA_OP_HIX22:
1915 case R_SPARC_GOTDATA_OP_LOX10:
1916 break;
1917
1918 default:
1919 if (local_got_refcounts[r_symndx] > 0)
1920 local_got_refcounts[r_symndx]--;
1921 break;
1922 }
1923 }
1924 break;
1925
1926 case R_SPARC_PC10:
1927 case R_SPARC_PC22:
1928 case R_SPARC_PC_HH22:
1929 case R_SPARC_PC_HM10:
1930 case R_SPARC_PC_LM22:
1931 if (h != NULL
1932 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1933 break;
1934 /* Fall through. */
1935
1936 case R_SPARC_DISP8:
1937 case R_SPARC_DISP16:
1938 case R_SPARC_DISP32:
1939 case R_SPARC_DISP64:
1940 case R_SPARC_WDISP30:
1941 case R_SPARC_WDISP22:
1942 case R_SPARC_WDISP19:
1943 case R_SPARC_WDISP16:
1944 case R_SPARC_8:
1945 case R_SPARC_16:
1946 case R_SPARC_32:
1947 case R_SPARC_HI22:
1948 case R_SPARC_22:
1949 case R_SPARC_13:
1950 case R_SPARC_LO10:
1951 case R_SPARC_UA16:
1952 case R_SPARC_UA32:
1953 case R_SPARC_PLT32:
1954 case R_SPARC_10:
1955 case R_SPARC_11:
1956 case R_SPARC_64:
1957 case R_SPARC_OLO10:
1958 case R_SPARC_HH22:
1959 case R_SPARC_HM10:
1960 case R_SPARC_LM22:
1961 case R_SPARC_7:
1962 case R_SPARC_5:
1963 case R_SPARC_6:
1964 case R_SPARC_HIX22:
1965 case R_SPARC_LOX10:
1966 case R_SPARC_H44:
1967 case R_SPARC_M44:
1968 case R_SPARC_L44:
1969 case R_SPARC_UA64:
1970 if (info->shared)
1971 break;
1972 /* Fall through. */
1973
1974 case R_SPARC_WPLT30:
1975 if (h != NULL)
1976 {
1977 if (h->plt.refcount > 0)
1978 h->plt.refcount--;
1979 }
1980 break;
1981
1982 default:
1983 break;
1984 }
1985 }
1986
1987 return TRUE;
1988 }
1989
1990 /* Adjust a symbol defined by a dynamic object and referenced by a
1991 regular object. The current definition is in some section of the
1992 dynamic object, but we're not including those sections. We have to
1993 change the definition to something the rest of the link can
1994 understand. */
1995
1996 bfd_boolean
1997 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1998 struct elf_link_hash_entry *h)
1999 {
2000 struct _bfd_sparc_elf_link_hash_table *htab;
2001 struct _bfd_sparc_elf_link_hash_entry * eh;
2002 struct _bfd_sparc_elf_dyn_relocs *p;
2003 asection *s;
2004
2005 htab = _bfd_sparc_elf_hash_table (info);
2006 BFD_ASSERT (htab != NULL);
2007
2008 /* Make sure we know what is going on here. */
2009 BFD_ASSERT (htab->elf.dynobj != NULL
2010 && (h->needs_plt
2011 || h->type == STT_GNU_IFUNC
2012 || h->u.weakdef != NULL
2013 || (h->def_dynamic
2014 && h->ref_regular
2015 && !h->def_regular)));
2016
2017 /* If this is a function, put it in the procedure linkage table. We
2018 will fill in the contents of the procedure linkage table later
2019 (although we could actually do it here). The STT_NOTYPE
2020 condition is a hack specifically for the Oracle libraries
2021 delivered for Solaris; for some inexplicable reason, they define
2022 some of their functions as STT_NOTYPE when they really should be
2023 STT_FUNC. */
2024 if (h->type == STT_FUNC
2025 || h->type == STT_GNU_IFUNC
2026 || h->needs_plt
2027 || (h->type == STT_NOTYPE
2028 && (h->root.type == bfd_link_hash_defined
2029 || h->root.type == bfd_link_hash_defweak)
2030 && (h->root.u.def.section->flags & SEC_CODE) != 0))
2031 {
2032 if (h->plt.refcount <= 0
2033 || (h->type != STT_GNU_IFUNC
2034 && (SYMBOL_CALLS_LOCAL (info, h)
2035 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2036 && h->root.type == bfd_link_hash_undefweak))))
2037 {
2038 /* This case can occur if we saw a WPLT30 reloc in an input
2039 file, but the symbol was never referred to by a dynamic
2040 object, or if all references were garbage collected. In
2041 such a case, we don't actually need to build a procedure
2042 linkage table, and we can just do a WDISP30 reloc instead. */
2043 h->plt.offset = (bfd_vma) -1;
2044 h->needs_plt = 0;
2045 }
2046
2047 return TRUE;
2048 }
2049 else
2050 h->plt.offset = (bfd_vma) -1;
2051
2052 /* If this is a weak symbol, and there is a real definition, the
2053 processor independent code will have arranged for us to see the
2054 real definition first, and we can just use the same value. */
2055 if (h->u.weakdef != NULL)
2056 {
2057 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2058 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2059 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2060 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2061 return TRUE;
2062 }
2063
2064 /* This is a reference to a symbol defined by a dynamic object which
2065 is not a function. */
2066
2067 /* If we are creating a shared library, we must presume that the
2068 only references to the symbol are via the global offset table.
2069 For such cases we need not do anything here; the relocations will
2070 be handled correctly by relocate_section. */
2071 if (info->shared)
2072 return TRUE;
2073
2074 /* If there are no references to this symbol that do not use the
2075 GOT, we don't need to generate a copy reloc. */
2076 if (!h->non_got_ref)
2077 return TRUE;
2078
2079 /* If -z nocopyreloc was given, we won't generate them either. */
2080 if (info->nocopyreloc)
2081 {
2082 h->non_got_ref = 0;
2083 return TRUE;
2084 }
2085
2086 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2087 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2088 {
2089 s = p->sec->output_section;
2090 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2091 break;
2092 }
2093
2094 /* If we didn't find any dynamic relocs in read-only sections, then
2095 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2096 if (p == NULL)
2097 {
2098 h->non_got_ref = 0;
2099 return TRUE;
2100 }
2101
2102 if (h->size == 0)
2103 {
2104 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2105 h->root.root.string);
2106 return TRUE;
2107 }
2108
2109 /* We must allocate the symbol in our .dynbss section, which will
2110 become part of the .bss section of the executable. There will be
2111 an entry for this symbol in the .dynsym section. The dynamic
2112 object will contain position independent code, so all references
2113 from the dynamic object to this symbol will go through the global
2114 offset table. The dynamic linker will use the .dynsym entry to
2115 determine the address it must put in the global offset table, so
2116 both the dynamic object and the regular object will refer to the
2117 same memory location for the variable. */
2118
2119 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2120 to copy the initial value out of the dynamic object and into the
2121 runtime process image. We need to remember the offset into the
2122 .rel.bss section we are going to use. */
2123 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2124 {
2125 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
2126 h->needs_copy = 1;
2127 }
2128
2129 s = htab->sdynbss;
2130
2131 return _bfd_elf_adjust_dynamic_copy (h, s);
2132 }
2133
2134 /* Allocate space in .plt, .got and associated reloc sections for
2135 dynamic relocs. */
2136
2137 static bfd_boolean
2138 allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
2139 {
2140 struct bfd_link_info *info;
2141 struct _bfd_sparc_elf_link_hash_table *htab;
2142 struct _bfd_sparc_elf_link_hash_entry *eh;
2143 struct _bfd_sparc_elf_dyn_relocs *p;
2144
2145 if (h->root.type == bfd_link_hash_indirect)
2146 return TRUE;
2147
2148 if (h->root.type == bfd_link_hash_warning)
2149 /* When warning symbols are created, they **replace** the "real"
2150 entry in the hash table, thus we never get to see the real
2151 symbol in a hash traversal. So look at it now. */
2152 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2153
2154 info = (struct bfd_link_info *) inf;
2155 htab = _bfd_sparc_elf_hash_table (info);
2156 BFD_ASSERT (htab != NULL);
2157
2158 if ((htab->elf.dynamic_sections_created
2159 && h->plt.refcount > 0)
2160 || (h->type == STT_GNU_IFUNC
2161 && h->def_regular
2162 && h->ref_regular))
2163 {
2164 /* Make sure this symbol is output as a dynamic symbol.
2165 Undefined weak syms won't yet be marked as dynamic. */
2166 if (h->dynindx == -1
2167 && !h->forced_local)
2168 {
2169 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2170 return FALSE;
2171 }
2172
2173 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)
2174 || (h->type == STT_GNU_IFUNC
2175 && h->def_regular))
2176 {
2177 asection *s = htab->elf.splt;
2178
2179 if (s == NULL)
2180 s = htab->elf.iplt;
2181
2182 /* Allocate room for the header. */
2183 if (s->size == 0)
2184 {
2185 s->size = htab->plt_header_size;
2186
2187 /* Allocate space for the .rela.plt.unloaded relocations. */
2188 if (htab->is_vxworks && !info->shared)
2189 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2190 }
2191
2192 /* The procedure linkage table size is bounded by the magnitude
2193 of the offset we can describe in the entry. */
2194 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2195 (((bfd_vma)1 << 31) << 1) : 0x400000))
2196 {
2197 bfd_set_error (bfd_error_bad_value);
2198 return FALSE;
2199 }
2200
2201 if (SPARC_ELF_WORD_BYTES(htab) == 8
2202 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2203 {
2204 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2205
2206
2207 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2208
2209 h->plt.offset = (s->size - (off * 8));
2210 }
2211 else
2212 h->plt.offset = s->size;
2213
2214 /* If this symbol is not defined in a regular file, and we are
2215 not generating a shared library, then set the symbol to this
2216 location in the .plt. This is required to make function
2217 pointers compare as equal between the normal executable and
2218 the shared library. */
2219 if (! info->shared
2220 && !h->def_regular)
2221 {
2222 h->root.u.def.section = s;
2223 h->root.u.def.value = h->plt.offset;
2224 }
2225
2226 /* Make room for this entry. */
2227 s->size += htab->plt_entry_size;
2228
2229 /* We also need to make an entry in the .rela.plt section. */
2230 if (s == htab->elf.splt)
2231 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2232 else
2233 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2234
2235 if (htab->is_vxworks)
2236 {
2237 /* Allocate space for the .got.plt entry. */
2238 htab->elf.sgotplt->size += 4;
2239
2240 /* ...and for the .rela.plt.unloaded relocations. */
2241 if (!info->shared)
2242 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2243 }
2244 }
2245 else
2246 {
2247 h->plt.offset = (bfd_vma) -1;
2248 h->needs_plt = 0;
2249 }
2250 }
2251 else
2252 {
2253 h->plt.offset = (bfd_vma) -1;
2254 h->needs_plt = 0;
2255 }
2256
2257 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2258 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2259 if (h->got.refcount > 0
2260 && !info->shared
2261 && h->dynindx == -1
2262 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2263 h->got.offset = (bfd_vma) -1;
2264 else if (h->got.refcount > 0)
2265 {
2266 asection *s;
2267 bfd_boolean dyn;
2268 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2269
2270 /* Make sure this symbol is output as a dynamic symbol.
2271 Undefined weak syms won't yet be marked as dynamic. */
2272 if (h->dynindx == -1
2273 && !h->forced_local)
2274 {
2275 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2276 return FALSE;
2277 }
2278
2279 s = htab->elf.sgot;
2280 h->got.offset = s->size;
2281 s->size += SPARC_ELF_WORD_BYTES (htab);
2282 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2283 if (tls_type == GOT_TLS_GD)
2284 s->size += SPARC_ELF_WORD_BYTES (htab);
2285 dyn = htab->elf.dynamic_sections_created;
2286 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2287 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2288 global. */
2289 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2290 || tls_type == GOT_TLS_IE
2291 || h->type == STT_GNU_IFUNC)
2292 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2293 else if (tls_type == GOT_TLS_GD)
2294 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2295 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2296 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2297 }
2298 else
2299 h->got.offset = (bfd_vma) -1;
2300
2301 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2302 if (eh->dyn_relocs == NULL)
2303 return TRUE;
2304
2305 /* In the shared -Bsymbolic case, discard space allocated for
2306 dynamic pc-relative relocs against symbols which turn out to be
2307 defined in regular objects. For the normal shared case, discard
2308 space for pc-relative relocs that have become local due to symbol
2309 visibility changes. */
2310
2311 if (info->shared)
2312 {
2313 if (SYMBOL_CALLS_LOCAL (info, h))
2314 {
2315 struct _bfd_sparc_elf_dyn_relocs **pp;
2316
2317 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2318 {
2319 p->count -= p->pc_count;
2320 p->pc_count = 0;
2321 if (p->count == 0)
2322 *pp = p->next;
2323 else
2324 pp = &p->next;
2325 }
2326 }
2327
2328 if (htab->is_vxworks)
2329 {
2330 struct _bfd_sparc_elf_dyn_relocs **pp;
2331
2332 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2333 {
2334 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2335 *pp = p->next;
2336 else
2337 pp = &p->next;
2338 }
2339 }
2340
2341 /* Also discard relocs on undefined weak syms with non-default
2342 visibility. */
2343 if (eh->dyn_relocs != NULL
2344 && h->root.type == bfd_link_hash_undefweak)
2345 {
2346 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2347 eh->dyn_relocs = NULL;
2348
2349 /* Make sure undefined weak symbols are output as a dynamic
2350 symbol in PIEs. */
2351 else if (h->dynindx == -1
2352 && !h->forced_local)
2353 {
2354 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2355 return FALSE;
2356 }
2357 }
2358 }
2359 else
2360 {
2361 /* For the non-shared case, discard space for relocs against
2362 symbols which turn out to need copy relocs or are not
2363 dynamic. */
2364
2365 if (!h->non_got_ref
2366 && ((h->def_dynamic
2367 && !h->def_regular)
2368 || (htab->elf.dynamic_sections_created
2369 && (h->root.type == bfd_link_hash_undefweak
2370 || h->root.type == bfd_link_hash_undefined))))
2371 {
2372 /* Make sure this symbol is output as a dynamic symbol.
2373 Undefined weak syms won't yet be marked as dynamic. */
2374 if (h->dynindx == -1
2375 && !h->forced_local)
2376 {
2377 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2378 return FALSE;
2379 }
2380
2381 /* If that succeeded, we know we'll be keeping all the
2382 relocs. */
2383 if (h->dynindx != -1)
2384 goto keep;
2385 }
2386
2387 eh->dyn_relocs = NULL;
2388
2389 keep: ;
2390 }
2391
2392 /* Finally, allocate space. */
2393 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2394 {
2395 asection *sreloc = elf_section_data (p->sec)->sreloc;
2396 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2397 }
2398
2399 return TRUE;
2400 }
2401
2402 /* Allocate space in .plt, .got and associated reloc sections for
2403 local dynamic relocs. */
2404
2405 static bfd_boolean
2406 allocate_local_dynrelocs (void **slot, void *inf)
2407 {
2408 struct elf_link_hash_entry *h
2409 = (struct elf_link_hash_entry *) *slot;
2410
2411 if (h->type != STT_GNU_IFUNC
2412 || !h->def_regular
2413 || !h->ref_regular
2414 || !h->forced_local
2415 || h->root.type != bfd_link_hash_defined)
2416 abort ();
2417
2418 return allocate_dynrelocs (h, inf);
2419 }
2420
2421 /* Find any dynamic relocs that apply to read-only sections. */
2422
2423 static bfd_boolean
2424 readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
2425 {
2426 struct _bfd_sparc_elf_link_hash_entry *eh;
2427 struct _bfd_sparc_elf_dyn_relocs *p;
2428
2429 if (h->root.type == bfd_link_hash_warning)
2430 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2431
2432 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2433 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2434 {
2435 asection *s = p->sec->output_section;
2436
2437 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2438 {
2439 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2440
2441 info->flags |= DF_TEXTREL;
2442
2443 /* Not an error, just cut short the traversal. */
2444 return FALSE;
2445 }
2446 }
2447 return TRUE;
2448 }
2449
2450 /* Return true if the dynamic symbol for a given section should be
2451 omitted when creating a shared library. */
2452
2453 bfd_boolean
2454 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2455 struct bfd_link_info *info,
2456 asection *p)
2457 {
2458 /* We keep the .got section symbol so that explicit relocations
2459 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2460 can be turned into relocations against the .got symbol. */
2461 if (strcmp (p->name, ".got") == 0)
2462 return FALSE;
2463
2464 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2465 }
2466
2467 /* Set the sizes of the dynamic sections. */
2468
2469 bfd_boolean
2470 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2471 struct bfd_link_info *info)
2472 {
2473 struct _bfd_sparc_elf_link_hash_table *htab;
2474 bfd *dynobj;
2475 asection *s;
2476 bfd *ibfd;
2477
2478 htab = _bfd_sparc_elf_hash_table (info);
2479 BFD_ASSERT (htab != NULL);
2480 dynobj = htab->elf.dynobj;
2481 BFD_ASSERT (dynobj != NULL);
2482
2483 if (elf_hash_table (info)->dynamic_sections_created)
2484 {
2485 /* Set the contents of the .interp section to the interpreter. */
2486 if (info->executable)
2487 {
2488 s = bfd_get_section_by_name (dynobj, ".interp");
2489 BFD_ASSERT (s != NULL);
2490 s->size = htab->dynamic_interpreter_size;
2491 s->contents = (unsigned char *) htab->dynamic_interpreter;
2492 }
2493 }
2494
2495 /* Set up .got offsets for local syms, and space for local dynamic
2496 relocs. */
2497 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2498 {
2499 bfd_signed_vma *local_got;
2500 bfd_signed_vma *end_local_got;
2501 char *local_tls_type;
2502 bfd_size_type locsymcount;
2503 Elf_Internal_Shdr *symtab_hdr;
2504 asection *srel;
2505
2506 if (! is_sparc_elf (ibfd))
2507 continue;
2508
2509 for (s = ibfd->sections; s != NULL; s = s->next)
2510 {
2511 struct _bfd_sparc_elf_dyn_relocs *p;
2512
2513 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2514 {
2515 if (!bfd_is_abs_section (p->sec)
2516 && bfd_is_abs_section (p->sec->output_section))
2517 {
2518 /* Input section has been discarded, either because
2519 it is a copy of a linkonce section or due to
2520 linker script /DISCARD/, so we'll be discarding
2521 the relocs too. */
2522 }
2523 else if (htab->is_vxworks
2524 && strcmp (p->sec->output_section->name,
2525 ".tls_vars") == 0)
2526 {
2527 /* Relocations in vxworks .tls_vars sections are
2528 handled specially by the loader. */
2529 }
2530 else if (p->count != 0)
2531 {
2532 srel = elf_section_data (p->sec)->sreloc;
2533 if (!htab->elf.dynamic_sections_created)
2534 srel = htab->elf.irelplt;
2535 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2536 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2537 info->flags |= DF_TEXTREL;
2538 }
2539 }
2540 }
2541
2542 local_got = elf_local_got_refcounts (ibfd);
2543 if (!local_got)
2544 continue;
2545
2546 symtab_hdr = &elf_symtab_hdr (ibfd);
2547 locsymcount = symtab_hdr->sh_info;
2548 end_local_got = local_got + locsymcount;
2549 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2550 s = htab->elf.sgot;
2551 srel = htab->elf.srelgot;
2552 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2553 {
2554 if (*local_got > 0)
2555 {
2556 *local_got = s->size;
2557 s->size += SPARC_ELF_WORD_BYTES (htab);
2558 if (*local_tls_type == GOT_TLS_GD)
2559 s->size += SPARC_ELF_WORD_BYTES (htab);
2560 if (info->shared
2561 || *local_tls_type == GOT_TLS_GD
2562 || *local_tls_type == GOT_TLS_IE)
2563 srel->size += SPARC_ELF_RELA_BYTES (htab);
2564 }
2565 else
2566 *local_got = (bfd_vma) -1;
2567 }
2568 }
2569
2570 if (htab->tls_ldm_got.refcount > 0)
2571 {
2572 /* Allocate 2 got entries and 1 dynamic reloc for
2573 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2574 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2575 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2576 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2577 }
2578 else
2579 htab->tls_ldm_got.offset = -1;
2580
2581 /* Allocate global sym .plt and .got entries, and space for global
2582 sym dynamic relocs. */
2583 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2584
2585 /* Allocate .plt and .got entries, and space for local symbols. */
2586 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2587
2588 if (! ABI_64_P (output_bfd)
2589 && !htab->is_vxworks
2590 && elf_hash_table (info)->dynamic_sections_created)
2591 {
2592 /* Make space for the trailing nop in .plt. */
2593 if (htab->elf.splt->size > 0)
2594 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2595
2596 /* If the .got section is more than 0x1000 bytes, we add
2597 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2598 bit relocations have a greater chance of working.
2599
2600 FIXME: Make this optimization work for 64-bit too. */
2601 if (htab->elf.sgot->size >= 0x1000
2602 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2603 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2604 }
2605
2606 /* The check_relocs and adjust_dynamic_symbol entry points have
2607 determined the sizes of the various dynamic sections. Allocate
2608 memory for them. */
2609 for (s = dynobj->sections; s != NULL; s = s->next)
2610 {
2611 if ((s->flags & SEC_LINKER_CREATED) == 0)
2612 continue;
2613
2614 if (s == htab->elf.splt
2615 || s == htab->elf.sgot
2616 || s == htab->sdynbss
2617 || s == htab->elf.iplt
2618 || s == htab->elf.sgotplt)
2619 {
2620 /* Strip this section if we don't need it; see the
2621 comment below. */
2622 }
2623 else if (CONST_STRNEQ (s->name, ".rela"))
2624 {
2625 if (s->size != 0)
2626 {
2627 /* We use the reloc_count field as a counter if we need
2628 to copy relocs into the output file. */
2629 s->reloc_count = 0;
2630 }
2631 }
2632 else
2633 {
2634 /* It's not one of our sections. */
2635 continue;
2636 }
2637
2638 if (s->size == 0)
2639 {
2640 /* If we don't need this section, strip it from the
2641 output file. This is mostly to handle .rela.bss and
2642 .rela.plt. We must create both sections in
2643 create_dynamic_sections, because they must be created
2644 before the linker maps input sections to output
2645 sections. The linker does that before
2646 adjust_dynamic_symbol is called, and it is that
2647 function which decides whether anything needs to go
2648 into these sections. */
2649 s->flags |= SEC_EXCLUDE;
2650 continue;
2651 }
2652
2653 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2654 continue;
2655
2656 /* Allocate memory for the section contents. Zero the memory
2657 for the benefit of .rela.plt, which has 4 unused entries
2658 at the beginning, and we don't want garbage. */
2659 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2660 if (s->contents == NULL)
2661 return FALSE;
2662 }
2663
2664 if (elf_hash_table (info)->dynamic_sections_created)
2665 {
2666 /* Add some entries to the .dynamic section. We fill in the
2667 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2668 must add the entries now so that we get the correct size for
2669 the .dynamic section. The DT_DEBUG entry is filled in by the
2670 dynamic linker and used by the debugger. */
2671 #define add_dynamic_entry(TAG, VAL) \
2672 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2673
2674 if (info->executable)
2675 {
2676 if (!add_dynamic_entry (DT_DEBUG, 0))
2677 return FALSE;
2678 }
2679
2680 if (htab->elf.srelplt->size != 0)
2681 {
2682 if (!add_dynamic_entry (DT_PLTGOT, 0)
2683 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2684 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2685 || !add_dynamic_entry (DT_JMPREL, 0))
2686 return FALSE;
2687 }
2688
2689 if (!add_dynamic_entry (DT_RELA, 0)
2690 || !add_dynamic_entry (DT_RELASZ, 0)
2691 || !add_dynamic_entry (DT_RELAENT,
2692 SPARC_ELF_RELA_BYTES (htab)))
2693 return FALSE;
2694
2695 /* If any dynamic relocs apply to a read-only section,
2696 then we need a DT_TEXTREL entry. */
2697 if ((info->flags & DF_TEXTREL) == 0)
2698 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2699 (PTR) info);
2700
2701 if (info->flags & DF_TEXTREL)
2702 {
2703 if (!add_dynamic_entry (DT_TEXTREL, 0))
2704 return FALSE;
2705 }
2706
2707 if (ABI_64_P (output_bfd))
2708 {
2709 int reg;
2710 struct _bfd_sparc_elf_app_reg * app_regs;
2711 struct elf_strtab_hash *dynstr;
2712 struct elf_link_hash_table *eht = elf_hash_table (info);
2713
2714 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2715 entries if needed. */
2716 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2717 dynstr = eht->dynstr;
2718
2719 for (reg = 0; reg < 4; reg++)
2720 if (app_regs [reg].name != NULL)
2721 {
2722 struct elf_link_local_dynamic_entry *entry, *e;
2723
2724 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2725 return FALSE;
2726
2727 entry = (struct elf_link_local_dynamic_entry *)
2728 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2729 if (entry == NULL)
2730 return FALSE;
2731
2732 /* We cheat here a little bit: the symbol will not be local, so we
2733 put it at the end of the dynlocal linked list. We will fix it
2734 later on, as we have to fix other fields anyway. */
2735 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2736 entry->isym.st_size = 0;
2737 if (*app_regs [reg].name != '\0')
2738 entry->isym.st_name
2739 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2740 else
2741 entry->isym.st_name = 0;
2742 entry->isym.st_other = 0;
2743 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2744 STT_REGISTER);
2745 entry->isym.st_shndx = app_regs [reg].shndx;
2746 entry->isym.st_target_internal = 0;
2747 entry->next = NULL;
2748 entry->input_bfd = output_bfd;
2749 entry->input_indx = -1;
2750
2751 if (eht->dynlocal == NULL)
2752 eht->dynlocal = entry;
2753 else
2754 {
2755 for (e = eht->dynlocal; e->next; e = e->next)
2756 ;
2757 e->next = entry;
2758 }
2759 eht->dynsymcount++;
2760 }
2761 }
2762 if (htab->is_vxworks
2763 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2764 return FALSE;
2765 }
2766 #undef add_dynamic_entry
2767
2768 return TRUE;
2769 }
2770 \f
2771 bfd_boolean
2772 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2773 {
2774 if (!sec->used_by_bfd)
2775 {
2776 struct _bfd_sparc_elf_section_data *sdata;
2777 bfd_size_type amt = sizeof (*sdata);
2778
2779 sdata = bfd_zalloc (abfd, amt);
2780 if (sdata == NULL)
2781 return FALSE;
2782 sec->used_by_bfd = sdata;
2783 }
2784
2785 return _bfd_elf_new_section_hook (abfd, sec);
2786 }
2787
2788 bfd_boolean
2789 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2790 struct bfd_section *section,
2791 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2792 bfd_boolean *again)
2793 {
2794 if (link_info->relocatable)
2795 (*link_info->callbacks->einfo)
2796 (_("%P%F: --relax and -r may not be used together\n"));
2797
2798 *again = FALSE;
2799 sec_do_relax (section) = 1;
2800 return TRUE;
2801 }
2802 \f
2803 /* Return the base VMA address which should be subtracted from real addresses
2804 when resolving @dtpoff relocation.
2805 This is PT_TLS segment p_vaddr. */
2806
2807 static bfd_vma
2808 dtpoff_base (struct bfd_link_info *info)
2809 {
2810 /* If tls_sec is NULL, we should have signalled an error already. */
2811 if (elf_hash_table (info)->tls_sec == NULL)
2812 return 0;
2813 return elf_hash_table (info)->tls_sec->vma;
2814 }
2815
2816 /* Return the relocation value for @tpoff relocation
2817 if STT_TLS virtual address is ADDRESS. */
2818
2819 static bfd_vma
2820 tpoff (struct bfd_link_info *info, bfd_vma address)
2821 {
2822 struct elf_link_hash_table *htab = elf_hash_table (info);
2823 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2824 bfd_vma static_tls_size;
2825
2826 /* If tls_sec is NULL, we should have signalled an error already. */
2827 if (htab->tls_sec == NULL)
2828 return 0;
2829
2830 /* Consider special static TLS alignment requirements. */
2831 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2832 return address - static_tls_size - htab->tls_sec->vma;
2833 }
2834
2835 /* Return the relocation value for a %gdop relocation. */
2836
2837 static bfd_vma
2838 gdopoff (struct bfd_link_info *info, bfd_vma address)
2839 {
2840 struct elf_link_hash_table *htab = elf_hash_table (info);
2841 bfd_vma got_base;
2842
2843 got_base = (htab->hgot->root.u.def.value
2844 + htab->hgot->root.u.def.section->output_offset
2845 + htab->hgot->root.u.def.section->output_section->vma);
2846
2847 return address - got_base;
2848 }
2849
2850 /* Relocate a SPARC ELF section. */
2851
2852 bfd_boolean
2853 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2854 struct bfd_link_info *info,
2855 bfd *input_bfd,
2856 asection *input_section,
2857 bfd_byte *contents,
2858 Elf_Internal_Rela *relocs,
2859 Elf_Internal_Sym *local_syms,
2860 asection **local_sections)
2861 {
2862 struct _bfd_sparc_elf_link_hash_table *htab;
2863 Elf_Internal_Shdr *symtab_hdr;
2864 struct elf_link_hash_entry **sym_hashes;
2865 bfd_vma *local_got_offsets;
2866 bfd_vma got_base;
2867 asection *sreloc;
2868 Elf_Internal_Rela *rel;
2869 Elf_Internal_Rela *relend;
2870 int num_relocs;
2871 bfd_boolean is_vxworks_tls;
2872
2873 htab = _bfd_sparc_elf_hash_table (info);
2874 BFD_ASSERT (htab != NULL);
2875 symtab_hdr = &elf_symtab_hdr (input_bfd);
2876 sym_hashes = elf_sym_hashes (input_bfd);
2877 local_got_offsets = elf_local_got_offsets (input_bfd);
2878
2879 if (elf_hash_table (info)->hgot == NULL)
2880 got_base = 0;
2881 else
2882 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2883
2884 sreloc = elf_section_data (input_section)->sreloc;
2885 /* We have to handle relocations in vxworks .tls_vars sections
2886 specially, because the dynamic loader is 'weird'. */
2887 is_vxworks_tls = (htab->is_vxworks && info->shared
2888 && !strcmp (input_section->output_section->name,
2889 ".tls_vars"));
2890
2891 rel = relocs;
2892 if (ABI_64_P (output_bfd))
2893 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2894 else
2895 num_relocs = input_section->reloc_count;
2896 relend = relocs + num_relocs;
2897 for (; rel < relend; rel++)
2898 {
2899 int r_type, tls_type;
2900 reloc_howto_type *howto;
2901 unsigned long r_symndx;
2902 struct elf_link_hash_entry *h;
2903 Elf_Internal_Sym *sym;
2904 asection *sec;
2905 bfd_vma relocation, off;
2906 bfd_reloc_status_type r;
2907 bfd_boolean is_plt = FALSE;
2908 bfd_boolean unresolved_reloc;
2909
2910 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2911 if (r_type == R_SPARC_GNU_VTINHERIT
2912 || r_type == R_SPARC_GNU_VTENTRY)
2913 continue;
2914
2915 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2916 {
2917 bfd_set_error (bfd_error_bad_value);
2918 return FALSE;
2919 }
2920 howto = _bfd_sparc_elf_howto_table + r_type;
2921
2922 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2923 h = NULL;
2924 sym = NULL;
2925 sec = NULL;
2926 unresolved_reloc = FALSE;
2927 if (r_symndx < symtab_hdr->sh_info)
2928 {
2929 sym = local_syms + r_symndx;
2930 sec = local_sections[r_symndx];
2931 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2932
2933 if (!info->relocatable
2934 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2935 {
2936 /* Relocate against local STT_GNU_IFUNC symbol. */
2937 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
2938 rel, FALSE);
2939 if (h == NULL)
2940 abort ();
2941
2942 /* Set STT_GNU_IFUNC symbol value. */
2943 h->root.u.def.value = sym->st_value;
2944 h->root.u.def.section = sec;
2945 }
2946 }
2947 else
2948 {
2949 bfd_boolean warned;
2950
2951 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2952 r_symndx, symtab_hdr, sym_hashes,
2953 h, sec, relocation,
2954 unresolved_reloc, warned);
2955 if (warned)
2956 {
2957 /* To avoid generating warning messages about truncated
2958 relocations, set the relocation's address to be the same as
2959 the start of this section. */
2960 if (input_section->output_section != NULL)
2961 relocation = input_section->output_section->vma;
2962 else
2963 relocation = 0;
2964 }
2965 }
2966
2967 if (sec != NULL && elf_discarded_section (sec))
2968 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2969 rel, relend, howto, contents);
2970
2971 if (info->relocatable)
2972 continue;
2973
2974 if (h != NULL
2975 && h->type == STT_GNU_IFUNC
2976 && h->def_regular)
2977 {
2978 asection *plt_sec;
2979 const char *name;
2980
2981 if ((input_section->flags & SEC_ALLOC) == 0
2982 || h->plt.offset == (bfd_vma) -1)
2983 abort ();
2984
2985 plt_sec = htab->elf.splt;
2986 if (! plt_sec)
2987 plt_sec =htab->elf.iplt;
2988
2989 switch (r_type)
2990 {
2991 case R_SPARC_GOTDATA_OP:
2992 continue;
2993
2994 case R_SPARC_GOTDATA_OP_HIX22:
2995 case R_SPARC_GOTDATA_OP_LOX10:
2996 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
2997 ? R_SPARC_GOT22
2998 : R_SPARC_GOT10);
2999 howto = _bfd_sparc_elf_howto_table + r_type;
3000 /* Fall through. */
3001
3002 case R_SPARC_GOT10:
3003 case R_SPARC_GOT13:
3004 case R_SPARC_GOT22:
3005 if (htab->elf.sgot == NULL)
3006 abort ();
3007 off = h->got.offset;
3008 if (off == (bfd_vma) -1)
3009 abort();
3010 relocation = htab->elf.sgot->output_offset + off - got_base;
3011 goto do_relocation;
3012
3013 case R_SPARC_WPLT30:
3014 case R_SPARC_WDISP30:
3015 relocation = (plt_sec->output_section->vma
3016 + plt_sec->output_offset + h->plt.offset);
3017 goto do_relocation;
3018
3019 case R_SPARC_32:
3020 case R_SPARC_64:
3021 if (info->shared && h->non_got_ref)
3022 {
3023 Elf_Internal_Rela outrel;
3024 bfd_vma offset;
3025
3026 offset = _bfd_elf_section_offset (output_bfd, info,
3027 input_section,
3028 rel->r_offset);
3029 if (offset == (bfd_vma) -1
3030 || offset == (bfd_vma) -2)
3031 abort();
3032
3033 outrel.r_offset = (input_section->output_section->vma
3034 + input_section->output_offset
3035 + offset);
3036
3037 if (h->dynindx == -1
3038 || h->forced_local
3039 || info->executable)
3040 {
3041 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3042 0, R_SPARC_IRELATIVE);
3043 outrel.r_addend = relocation + rel->r_addend;
3044 }
3045 else
3046 {
3047 if (h->dynindx == -1)
3048 abort();
3049 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3050 outrel.r_addend = rel->r_addend;
3051 }
3052
3053 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3054 continue;
3055 }
3056
3057 relocation = (plt_sec->output_section->vma
3058 + plt_sec->output_offset + h->plt.offset);
3059 goto do_relocation;
3060
3061 case R_SPARC_HI22:
3062 case R_SPARC_LO10:
3063 /* We should only see such relocs in static links. */
3064 if (info->shared)
3065 abort();
3066 relocation = (plt_sec->output_section->vma
3067 + plt_sec->output_offset + h->plt.offset);
3068 goto do_relocation;
3069
3070 default:
3071 if (h->root.root.string)
3072 name = h->root.root.string;
3073 else
3074 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3075 NULL);
3076 (*_bfd_error_handler)
3077 (_("%B: relocation %s against STT_GNU_IFUNC "
3078 "symbol `%s' isn't handled by %s"), input_bfd,
3079 _bfd_sparc_elf_howto_table[r_type].name,
3080 name, __FUNCTION__);
3081 bfd_set_error (bfd_error_bad_value);
3082 return FALSE;
3083 }
3084 }
3085
3086 switch (r_type)
3087 {
3088 case R_SPARC_GOTDATA_OP_HIX22:
3089 case R_SPARC_GOTDATA_OP_LOX10:
3090 if (SYMBOL_REFERENCES_LOCAL (info, h))
3091 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3092 ? R_SPARC_GOTDATA_HIX22
3093 : R_SPARC_GOTDATA_LOX10);
3094 else
3095 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3096 ? R_SPARC_GOT22
3097 : R_SPARC_GOT10);
3098 howto = _bfd_sparc_elf_howto_table + r_type;
3099 break;
3100
3101 case R_SPARC_GOTDATA_OP:
3102 if (SYMBOL_REFERENCES_LOCAL (info, h))
3103 {
3104 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3105
3106 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3107 relocation = 0x80000000 | (insn & 0x3e07c01f);
3108 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3109 }
3110 continue;
3111 }
3112
3113 switch (r_type)
3114 {
3115 case R_SPARC_GOTDATA_HIX22:
3116 case R_SPARC_GOTDATA_LOX10:
3117 relocation = gdopoff (info, relocation);
3118 break;
3119
3120 case R_SPARC_GOT10:
3121 case R_SPARC_GOT13:
3122 case R_SPARC_GOT22:
3123 /* Relocation is to the entry for this symbol in the global
3124 offset table. */
3125 if (htab->elf.sgot == NULL)
3126 abort ();
3127
3128 if (h != NULL)
3129 {
3130 bfd_boolean dyn;
3131
3132 off = h->got.offset;
3133 BFD_ASSERT (off != (bfd_vma) -1);
3134 dyn = elf_hash_table (info)->dynamic_sections_created;
3135
3136 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3137 || (info->shared
3138 && SYMBOL_REFERENCES_LOCAL (info, h)))
3139 {
3140 /* This is actually a static link, or it is a
3141 -Bsymbolic link and the symbol is defined
3142 locally, or the symbol was forced to be local
3143 because of a version file. We must initialize
3144 this entry in the global offset table. Since the
3145 offset must always be a multiple of 8 for 64-bit
3146 and 4 for 32-bit, we use the least significant bit
3147 to record whether we have initialized it already.
3148
3149 When doing a dynamic link, we create a .rela.got
3150 relocation entry to initialize the value. This
3151 is done in the finish_dynamic_symbol routine. */
3152 if ((off & 1) != 0)
3153 off &= ~1;
3154 else
3155 {
3156 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3157 htab->elf.sgot->contents + off);
3158 h->got.offset |= 1;
3159 }
3160 }
3161 else
3162 unresolved_reloc = FALSE;
3163 }
3164 else
3165 {
3166 BFD_ASSERT (local_got_offsets != NULL
3167 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3168
3169 off = local_got_offsets[r_symndx];
3170
3171 /* The offset must always be a multiple of 8 on 64-bit and
3172 4 on 32-bit. We use the least significant bit to record
3173 whether we have already processed this entry. */
3174 if ((off & 1) != 0)
3175 off &= ~1;
3176 else
3177 {
3178
3179 if (info->shared)
3180 {
3181 asection *s;
3182 Elf_Internal_Rela outrel;
3183
3184 /* We need to generate a R_SPARC_RELATIVE reloc
3185 for the dynamic linker. */
3186 s = htab->elf.srelgot;
3187 BFD_ASSERT (s != NULL);
3188
3189 outrel.r_offset = (htab->elf.sgot->output_section->vma
3190 + htab->elf.sgot->output_offset
3191 + off);
3192 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3193 0, R_SPARC_RELATIVE);
3194 outrel.r_addend = relocation;
3195 relocation = 0;
3196 sparc_elf_append_rela (output_bfd, s, &outrel);
3197 }
3198
3199 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3200 htab->elf.sgot->contents + off);
3201 local_got_offsets[r_symndx] |= 1;
3202 }
3203 }
3204 relocation = htab->elf.sgot->output_offset + off - got_base;
3205 break;
3206
3207 case R_SPARC_PLT32:
3208 case R_SPARC_PLT64:
3209 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3210 {
3211 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3212 goto r_sparc_plt32;
3213 }
3214 /* Fall through. */
3215
3216 case R_SPARC_WPLT30:
3217 case R_SPARC_HIPLT22:
3218 case R_SPARC_LOPLT10:
3219 case R_SPARC_PCPLT32:
3220 case R_SPARC_PCPLT22:
3221 case R_SPARC_PCPLT10:
3222 r_sparc_wplt30:
3223 /* Relocation is to the entry for this symbol in the
3224 procedure linkage table. */
3225
3226 if (! ABI_64_P (output_bfd))
3227 {
3228 /* The Solaris native assembler will generate a WPLT30 reloc
3229 for a local symbol if you assemble a call from one
3230 section to another when using -K pic. We treat it as
3231 WDISP30. */
3232 if (h == NULL)
3233 break;
3234 }
3235 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3236 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3237 break;
3238 else
3239 {
3240 BFD_ASSERT (h != NULL);
3241 }
3242
3243 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3244 {
3245 /* We didn't make a PLT entry for this symbol. This
3246 happens when statically linking PIC code, or when
3247 using -Bsymbolic. */
3248 break;
3249 }
3250
3251 relocation = (htab->elf.splt->output_section->vma
3252 + htab->elf.splt->output_offset
3253 + h->plt.offset);
3254 unresolved_reloc = FALSE;
3255 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3256 {
3257 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3258 is_plt = TRUE;
3259 goto r_sparc_plt32;
3260 }
3261 break;
3262
3263 case R_SPARC_PC10:
3264 case R_SPARC_PC22:
3265 case R_SPARC_PC_HH22:
3266 case R_SPARC_PC_HM10:
3267 case R_SPARC_PC_LM22:
3268 if (h != NULL
3269 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3270 break;
3271 /* Fall through. */
3272 case R_SPARC_DISP8:
3273 case R_SPARC_DISP16:
3274 case R_SPARC_DISP32:
3275 case R_SPARC_DISP64:
3276 case R_SPARC_WDISP30:
3277 case R_SPARC_WDISP22:
3278 case R_SPARC_WDISP19:
3279 case R_SPARC_WDISP16:
3280 case R_SPARC_8:
3281 case R_SPARC_16:
3282 case R_SPARC_32:
3283 case R_SPARC_HI22:
3284 case R_SPARC_22:
3285 case R_SPARC_13:
3286 case R_SPARC_LO10:
3287 case R_SPARC_UA16:
3288 case R_SPARC_UA32:
3289 case R_SPARC_10:
3290 case R_SPARC_11:
3291 case R_SPARC_64:
3292 case R_SPARC_OLO10:
3293 case R_SPARC_HH22:
3294 case R_SPARC_HM10:
3295 case R_SPARC_LM22:
3296 case R_SPARC_7:
3297 case R_SPARC_5:
3298 case R_SPARC_6:
3299 case R_SPARC_HIX22:
3300 case R_SPARC_LOX10:
3301 case R_SPARC_H44:
3302 case R_SPARC_M44:
3303 case R_SPARC_L44:
3304 case R_SPARC_UA64:
3305 r_sparc_plt32:
3306 if ((input_section->flags & SEC_ALLOC) == 0
3307 || is_vxworks_tls)
3308 break;
3309
3310 if ((info->shared
3311 && (h == NULL
3312 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3313 || h->root.type != bfd_link_hash_undefweak)
3314 && (! howto->pc_relative
3315 || !SYMBOL_CALLS_LOCAL (info, h)))
3316 || (!info->shared
3317 && h != NULL
3318 && h->dynindx != -1
3319 && !h->non_got_ref
3320 && ((h->def_dynamic
3321 && !h->def_regular)
3322 || h->root.type == bfd_link_hash_undefweak
3323 || h->root.type == bfd_link_hash_undefined)))
3324 {
3325 Elf_Internal_Rela outrel;
3326 bfd_boolean skip, relocate = FALSE;
3327
3328 /* When generating a shared object, these relocations
3329 are copied into the output file to be resolved at run
3330 time. */
3331
3332 BFD_ASSERT (sreloc != NULL);
3333
3334 skip = FALSE;
3335
3336 outrel.r_offset =
3337 _bfd_elf_section_offset (output_bfd, info, input_section,
3338 rel->r_offset);
3339 if (outrel.r_offset == (bfd_vma) -1)
3340 skip = TRUE;
3341 else if (outrel.r_offset == (bfd_vma) -2)
3342 skip = TRUE, relocate = TRUE;
3343 outrel.r_offset += (input_section->output_section->vma
3344 + input_section->output_offset);
3345
3346 /* Optimize unaligned reloc usage now that we know where
3347 it finally resides. */
3348 switch (r_type)
3349 {
3350 case R_SPARC_16:
3351 if (outrel.r_offset & 1)
3352 r_type = R_SPARC_UA16;
3353 break;
3354 case R_SPARC_UA16:
3355 if (!(outrel.r_offset & 1))
3356 r_type = R_SPARC_16;
3357 break;
3358 case R_SPARC_32:
3359 if (outrel.r_offset & 3)
3360 r_type = R_SPARC_UA32;
3361 break;
3362 case R_SPARC_UA32:
3363 if (!(outrel.r_offset & 3))
3364 r_type = R_SPARC_32;
3365 break;
3366 case R_SPARC_64:
3367 if (outrel.r_offset & 7)
3368 r_type = R_SPARC_UA64;
3369 break;
3370 case R_SPARC_UA64:
3371 if (!(outrel.r_offset & 7))
3372 r_type = R_SPARC_64;
3373 break;
3374 case R_SPARC_DISP8:
3375 case R_SPARC_DISP16:
3376 case R_SPARC_DISP32:
3377 case R_SPARC_DISP64:
3378 /* If the symbol is not dynamic, we should not keep
3379 a dynamic relocation. But an .rela.* slot has been
3380 allocated for it, output R_SPARC_NONE.
3381 FIXME: Add code tracking needed dynamic relocs as
3382 e.g. i386 has. */
3383 if (h->dynindx == -1)
3384 skip = TRUE, relocate = TRUE;
3385 break;
3386 }
3387
3388 if (skip)
3389 memset (&outrel, 0, sizeof outrel);
3390 /* h->dynindx may be -1 if the symbol was marked to
3391 become local. */
3392 else if (h != NULL &&
3393 h->dynindx != -1
3394 && (! is_plt
3395 || !info->shared
3396 || !SYMBOLIC_BIND (info, h)
3397 || !h->def_regular))
3398 {
3399 BFD_ASSERT (h->dynindx != -1);
3400 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3401 outrel.r_addend = rel->r_addend;
3402 }
3403 else
3404 {
3405 if (r_type == R_SPARC_32 || r_type == R_SPARC_64)
3406 {
3407 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3408 0, R_SPARC_RELATIVE);
3409 outrel.r_addend = relocation + rel->r_addend;
3410 }
3411 else
3412 {
3413 long indx;
3414
3415 outrel.r_addend = relocation + rel->r_addend;
3416
3417 if (is_plt)
3418 sec = htab->elf.splt;
3419
3420 if (bfd_is_abs_section (sec))
3421 indx = 0;
3422 else if (sec == NULL || sec->owner == NULL)
3423 {
3424 bfd_set_error (bfd_error_bad_value);
3425 return FALSE;
3426 }
3427 else
3428 {
3429 asection *osec;
3430
3431 /* We are turning this relocation into one
3432 against a section symbol. It would be
3433 proper to subtract the symbol's value,
3434 osec->vma, from the emitted reloc addend,
3435 but ld.so expects buggy relocs. */
3436 osec = sec->output_section;
3437 indx = elf_section_data (osec)->dynindx;
3438
3439 if (indx == 0)
3440 {
3441 osec = htab->elf.text_index_section;
3442 indx = elf_section_data (osec)->dynindx;
3443 }
3444
3445 /* FIXME: we really should be able to link non-pic
3446 shared libraries. */
3447 if (indx == 0)
3448 {
3449 BFD_FAIL ();
3450 (*_bfd_error_handler)
3451 (_("%B: probably compiled without -fPIC?"),
3452 input_bfd);
3453 bfd_set_error (bfd_error_bad_value);
3454 return FALSE;
3455 }
3456 }
3457
3458 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3459 r_type);
3460 }
3461 }
3462
3463 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3464
3465 /* This reloc will be computed at runtime, so there's no
3466 need to do anything now. */
3467 if (! relocate)
3468 continue;
3469 }
3470 break;
3471
3472 case R_SPARC_TLS_GD_HI22:
3473 if (! ABI_64_P (input_bfd)
3474 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3475 {
3476 /* R_SPARC_REV32 used the same reloc number as
3477 R_SPARC_TLS_GD_HI22. */
3478 r_type = R_SPARC_REV32;
3479 break;
3480 }
3481 /* Fall through */
3482
3483 case R_SPARC_TLS_GD_LO10:
3484 case R_SPARC_TLS_IE_HI22:
3485 case R_SPARC_TLS_IE_LO10:
3486 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3487 tls_type = GOT_UNKNOWN;
3488 if (h == NULL && local_got_offsets)
3489 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3490 else if (h != NULL)
3491 {
3492 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3493 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3494 switch (SPARC_ELF_R_TYPE (rel->r_info))
3495 {
3496 case R_SPARC_TLS_GD_HI22:
3497 case R_SPARC_TLS_IE_HI22:
3498 r_type = R_SPARC_TLS_LE_HIX22;
3499 break;
3500 default:
3501 r_type = R_SPARC_TLS_LE_LOX10;
3502 break;
3503 }
3504 }
3505 if (tls_type == GOT_TLS_IE)
3506 switch (r_type)
3507 {
3508 case R_SPARC_TLS_GD_HI22:
3509 r_type = R_SPARC_TLS_IE_HI22;
3510 break;
3511 case R_SPARC_TLS_GD_LO10:
3512 r_type = R_SPARC_TLS_IE_LO10;
3513 break;
3514 }
3515
3516 if (r_type == R_SPARC_TLS_LE_HIX22)
3517 {
3518 relocation = tpoff (info, relocation);
3519 break;
3520 }
3521 if (r_type == R_SPARC_TLS_LE_LOX10)
3522 {
3523 /* Change add into xor. */
3524 relocation = tpoff (info, relocation);
3525 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3526 contents + rel->r_offset)
3527 | 0x80182000), contents + rel->r_offset);
3528 break;
3529 }
3530
3531 if (h != NULL)
3532 {
3533 off = h->got.offset;
3534 h->got.offset |= 1;
3535 }
3536 else
3537 {
3538 BFD_ASSERT (local_got_offsets != NULL);
3539 off = local_got_offsets[r_symndx];
3540 local_got_offsets[r_symndx] |= 1;
3541 }
3542
3543 r_sparc_tlsldm:
3544 if (htab->elf.sgot == NULL)
3545 abort ();
3546
3547 if ((off & 1) != 0)
3548 off &= ~1;
3549 else
3550 {
3551 Elf_Internal_Rela outrel;
3552 int dr_type, indx;
3553
3554 if (htab->elf.srelgot == NULL)
3555 abort ();
3556
3557 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3558 htab->elf.sgot->contents + off);
3559 outrel.r_offset = (htab->elf.sgot->output_section->vma
3560 + htab->elf.sgot->output_offset + off);
3561 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3562 if (r_type == R_SPARC_TLS_IE_HI22
3563 || r_type == R_SPARC_TLS_IE_LO10)
3564 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3565 else
3566 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3567 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3568 outrel.r_addend = relocation - dtpoff_base (info);
3569 else
3570 outrel.r_addend = 0;
3571 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3572 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3573
3574 if (r_type == R_SPARC_TLS_GD_HI22
3575 || r_type == R_SPARC_TLS_GD_LO10)
3576 {
3577 if (indx == 0)
3578 {
3579 BFD_ASSERT (! unresolved_reloc);
3580 SPARC_ELF_PUT_WORD (htab, output_bfd,
3581 relocation - dtpoff_base (info),
3582 (htab->elf.sgot->contents + off
3583 + SPARC_ELF_WORD_BYTES (htab)));
3584 }
3585 else
3586 {
3587 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3588 (htab->elf.sgot->contents + off
3589 + SPARC_ELF_WORD_BYTES (htab)));
3590 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3591 SPARC_ELF_DTPOFF_RELOC (htab));
3592 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3593 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3594 &outrel);
3595 }
3596 }
3597 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3598 {
3599 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3600 (htab->elf.sgot->contents + off
3601 + SPARC_ELF_WORD_BYTES (htab)));
3602 }
3603 }
3604
3605 if (off >= (bfd_vma) -2)
3606 abort ();
3607
3608 relocation = htab->elf.sgot->output_offset + off - got_base;
3609 unresolved_reloc = FALSE;
3610 howto = _bfd_sparc_elf_howto_table + r_type;
3611 break;
3612
3613 case R_SPARC_TLS_LDM_HI22:
3614 case R_SPARC_TLS_LDM_LO10:
3615 if (! info->shared)
3616 {
3617 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3618 continue;
3619 }
3620 off = htab->tls_ldm_got.offset;
3621 htab->tls_ldm_got.offset |= 1;
3622 goto r_sparc_tlsldm;
3623
3624 case R_SPARC_TLS_LDO_HIX22:
3625 case R_SPARC_TLS_LDO_LOX10:
3626 if (info->shared)
3627 {
3628 relocation -= dtpoff_base (info);
3629 break;
3630 }
3631
3632 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3633 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3634 /* Fall through. */
3635
3636 case R_SPARC_TLS_LE_HIX22:
3637 case R_SPARC_TLS_LE_LOX10:
3638 if (info->shared)
3639 {
3640 Elf_Internal_Rela outrel;
3641 bfd_boolean skip;
3642
3643 BFD_ASSERT (sreloc != NULL);
3644 skip = FALSE;
3645 outrel.r_offset =
3646 _bfd_elf_section_offset (output_bfd, info, input_section,
3647 rel->r_offset);
3648 if (outrel.r_offset == (bfd_vma) -1)
3649 skip = TRUE;
3650 else if (outrel.r_offset == (bfd_vma) -2)
3651 skip = TRUE;
3652 outrel.r_offset += (input_section->output_section->vma
3653 + input_section->output_offset);
3654 if (skip)
3655 memset (&outrel, 0, sizeof outrel);
3656 else
3657 {
3658 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3659 outrel.r_addend = relocation - dtpoff_base (info)
3660 + rel->r_addend;
3661 }
3662
3663 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3664 continue;
3665 }
3666 relocation = tpoff (info, relocation);
3667 break;
3668
3669 case R_SPARC_TLS_LDM_CALL:
3670 if (! info->shared)
3671 {
3672 /* mov %g0, %o0 */
3673 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3674 continue;
3675 }
3676 /* Fall through */
3677
3678 case R_SPARC_TLS_GD_CALL:
3679 tls_type = GOT_UNKNOWN;
3680 if (h == NULL && local_got_offsets)
3681 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3682 else if (h != NULL)
3683 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3684 if (! info->shared
3685 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3686 {
3687 bfd_vma insn;
3688
3689 if (!info->shared && (h == NULL || h->dynindx == -1))
3690 {
3691 /* GD -> LE */
3692 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3693 continue;
3694 }
3695
3696 /* GD -> IE */
3697 if (rel + 1 < relend
3698 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3699 && rel[1].r_offset == rel->r_offset + 4
3700 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3701 && (((insn = bfd_get_32 (input_bfd,
3702 contents + rel[1].r_offset))
3703 >> 25) & 0x1f) == 8)
3704 {
3705 /* We have
3706 call __tls_get_addr, %tgd_call(foo)
3707 add %reg1, %reg2, %o0, %tgd_add(foo)
3708 and change it into IE:
3709 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3710 add %g7, %o0, %o0, %tie_add(foo).
3711 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3712 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3713 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3714 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3715 contents + rel->r_offset);
3716 bfd_put_32 (output_bfd, 0x9001c008,
3717 contents + rel->r_offset + 4);
3718 rel++;
3719 continue;
3720 }
3721
3722 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
3723 continue;
3724 }
3725
3726 h = (struct elf_link_hash_entry *)
3727 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3728 FALSE, TRUE);
3729 BFD_ASSERT (h != NULL);
3730 r_type = R_SPARC_WPLT30;
3731 howto = _bfd_sparc_elf_howto_table + r_type;
3732 goto r_sparc_wplt30;
3733
3734 case R_SPARC_TLS_GD_ADD:
3735 tls_type = GOT_UNKNOWN;
3736 if (h == NULL && local_got_offsets)
3737 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3738 else if (h != NULL)
3739 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3740 if (! info->shared || tls_type == GOT_TLS_IE)
3741 {
3742 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3743 changed into IE:
3744 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3745 or LE:
3746 add %g7, %reg2, %reg3. */
3747 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3748 if ((h != NULL && h->dynindx != -1) || info->shared)
3749 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3750 else
3751 relocation = (insn & ~0x7c000) | 0x1c000;
3752 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3753 }
3754 continue;
3755
3756 case R_SPARC_TLS_LDM_ADD:
3757 if (! info->shared)
3758 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3759 continue;
3760
3761 case R_SPARC_TLS_LDO_ADD:
3762 if (! info->shared)
3763 {
3764 /* Change rs1 into %g7. */
3765 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3766 insn = (insn & ~0x7c000) | 0x1c000;
3767 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3768 }
3769 continue;
3770
3771 case R_SPARC_TLS_IE_LD:
3772 case R_SPARC_TLS_IE_LDX:
3773 if (! info->shared && (h == NULL || h->dynindx == -1))
3774 {
3775 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3776 int rs2 = insn & 0x1f;
3777 int rd = (insn >> 25) & 0x1f;
3778
3779 if (rs2 == rd)
3780 relocation = SPARC_NOP;
3781 else
3782 relocation = 0x80100000 | (insn & 0x3e00001f);
3783 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3784 }
3785 continue;
3786
3787 case R_SPARC_TLS_IE_ADD:
3788 /* Totally useless relocation. */
3789 continue;
3790
3791 case R_SPARC_TLS_DTPOFF32:
3792 case R_SPARC_TLS_DTPOFF64:
3793 relocation -= dtpoff_base (info);
3794 break;
3795
3796 default:
3797 break;
3798 }
3799
3800 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3801 because such sections are not SEC_ALLOC and thus ld.so will
3802 not process them. */
3803 if (unresolved_reloc
3804 && !((input_section->flags & SEC_DEBUGGING) != 0
3805 && h->def_dynamic))
3806 (*_bfd_error_handler)
3807 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3808 input_bfd,
3809 input_section,
3810 (long) rel->r_offset,
3811 howto->name,
3812 h->root.root.string);
3813
3814 r = bfd_reloc_continue;
3815 if (r_type == R_SPARC_OLO10)
3816 {
3817 bfd_vma x;
3818
3819 if (! ABI_64_P (output_bfd))
3820 abort ();
3821
3822 relocation += rel->r_addend;
3823 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3824
3825 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3826 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3827 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3828
3829 r = bfd_check_overflow (howto->complain_on_overflow,
3830 howto->bitsize, howto->rightshift,
3831 bfd_arch_bits_per_address (input_bfd),
3832 relocation);
3833 }
3834 else if (r_type == R_SPARC_WDISP16)
3835 {
3836 bfd_vma x;
3837
3838 relocation += rel->r_addend;
3839 relocation -= (input_section->output_section->vma
3840 + input_section->output_offset);
3841 relocation -= rel->r_offset;
3842
3843 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3844 x |= ((((relocation >> 2) & 0xc000) << 6)
3845 | ((relocation >> 2) & 0x3fff));
3846 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3847
3848 r = bfd_check_overflow (howto->complain_on_overflow,
3849 howto->bitsize, howto->rightshift,
3850 bfd_arch_bits_per_address (input_bfd),
3851 relocation);
3852 }
3853 else if (r_type == R_SPARC_REV32)
3854 {
3855 bfd_vma x;
3856
3857 relocation = relocation + rel->r_addend;
3858
3859 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3860 x = x + relocation;
3861 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3862 r = bfd_reloc_ok;
3863 }
3864 else if (r_type == R_SPARC_TLS_LDO_HIX22
3865 || r_type == R_SPARC_TLS_LE_HIX22)
3866 {
3867 bfd_vma x;
3868
3869 relocation += rel->r_addend;
3870 if (r_type == R_SPARC_TLS_LE_HIX22)
3871 relocation ^= MINUS_ONE;
3872
3873 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3874 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3875 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3876 r = bfd_reloc_ok;
3877 }
3878 else if (r_type == R_SPARC_TLS_LDO_LOX10
3879 || r_type == R_SPARC_TLS_LE_LOX10)
3880 {
3881 bfd_vma x;
3882
3883 relocation += rel->r_addend;
3884 relocation &= 0x3ff;
3885 if (r_type == R_SPARC_TLS_LE_LOX10)
3886 relocation |= 0x1c00;
3887
3888 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3889 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3890 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3891
3892 r = bfd_reloc_ok;
3893 }
3894 else if (r_type == R_SPARC_HIX22
3895 || r_type == R_SPARC_GOTDATA_HIX22)
3896 {
3897 bfd_vma x;
3898
3899 relocation += rel->r_addend;
3900 if (r_type == R_SPARC_HIX22
3901 || (bfd_signed_vma) relocation < 0)
3902 relocation = relocation ^ MINUS_ONE;
3903
3904 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3905 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3906 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3907
3908 r = bfd_check_overflow (howto->complain_on_overflow,
3909 howto->bitsize, howto->rightshift,
3910 bfd_arch_bits_per_address (input_bfd),
3911 relocation);
3912 }
3913 else if (r_type == R_SPARC_LOX10
3914 || r_type == R_SPARC_GOTDATA_LOX10)
3915 {
3916 bfd_vma x;
3917
3918 relocation += rel->r_addend;
3919 if (r_type == R_SPARC_LOX10
3920 || (bfd_signed_vma) relocation < 0)
3921 relocation = (relocation & 0x3ff) | 0x1c00;
3922 else
3923 relocation = (relocation & 0x3ff);
3924
3925 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3926 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3927 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3928
3929 r = bfd_reloc_ok;
3930 }
3931 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
3932 && sec_do_relax (input_section)
3933 && rel->r_offset + 4 < input_section->size)
3934 {
3935 #define G0 0
3936 #define O7 15
3937 #define XCC (2 << 20)
3938 #define COND(x) (((x)&0xf)<<25)
3939 #define CONDA COND(0x8)
3940 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
3941 #define INSN_BA (F2(0,2) | CONDA)
3942 #define INSN_OR F3(2, 0x2, 0)
3943 #define INSN_NOP F2(0,4)
3944
3945 bfd_vma x, y;
3946
3947 /* If the instruction is a call with either:
3948 restore
3949 arithmetic instruction with rd == %o7
3950 where rs1 != %o7 and rs2 if it is register != %o7
3951 then we can optimize if the call destination is near
3952 by changing the call into a branch always. */
3953 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3954 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3955 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
3956 {
3957 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
3958 || ((y & OP3(0x28)) == 0 /* arithmetic */
3959 && (y & RD(~0)) == RD(O7)))
3960 && (y & RS1(~0)) != RS1(O7)
3961 && ((y & F3I(~0))
3962 || (y & RS2(~0)) != RS2(O7)))
3963 {
3964 bfd_vma reloc;
3965
3966 reloc = relocation + rel->r_addend - rel->r_offset;
3967 reloc -= (input_section->output_section->vma
3968 + input_section->output_offset);
3969
3970 /* Ensure the branch fits into simm22. */
3971 if ((reloc & 3) == 0
3972 && ((reloc & ~(bfd_vma)0x7fffff) == 0
3973 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
3974 {
3975 reloc >>= 2;
3976
3977 /* Check whether it fits into simm19. */
3978 if (((reloc & 0x3c0000) == 0
3979 || (reloc & 0x3c0000) == 0x3c0000)
3980 && (ABI_64_P (output_bfd)
3981 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
3982 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
3983 else
3984 x = INSN_BA | (reloc & 0x3fffff); /* ba */
3985 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3986 r = bfd_reloc_ok;
3987 if (rel->r_offset >= 4
3988 && (y & (0xffffffff ^ RS1(~0)))
3989 == (INSN_OR | RD(O7) | RS2(G0)))
3990 {
3991 bfd_vma z;
3992 unsigned int reg;
3993
3994 z = bfd_get_32 (input_bfd,
3995 contents + rel->r_offset - 4);
3996 if ((z & (0xffffffff ^ RD(~0)))
3997 != (INSN_OR | RS1(O7) | RS2(G0)))
3998 break;
3999
4000 /* The sequence was
4001 or %o7, %g0, %rN
4002 call foo
4003 or %rN, %g0, %o7
4004
4005 If call foo was replaced with ba, replace
4006 or %rN, %g0, %o7 with nop. */
4007
4008 reg = (y & RS1(~0)) >> 14;
4009 if (reg != ((z & RD(~0)) >> 25)
4010 || reg == G0 || reg == O7)
4011 break;
4012
4013 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4014 contents + rel->r_offset + 4);
4015 }
4016
4017 }
4018 }
4019 }
4020 }
4021
4022 if (r == bfd_reloc_continue)
4023 {
4024 do_relocation:
4025 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4026 contents, rel->r_offset,
4027 relocation, rel->r_addend);
4028 }
4029 if (r != bfd_reloc_ok)
4030 {
4031 switch (r)
4032 {
4033 default:
4034 case bfd_reloc_outofrange:
4035 abort ();
4036 case bfd_reloc_overflow:
4037 {
4038 const char *name;
4039
4040 /* The Solaris native linker silently disregards overflows.
4041 We don't, but this breaks stabs debugging info, whose
4042 relocations are only 32-bits wide. Ignore overflows in
4043 this case and also for discarded entries. */
4044 if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32)
4045 && (((input_section->flags & SEC_DEBUGGING) != 0
4046 && strcmp (bfd_section_name (input_bfd,
4047 input_section),
4048 ".stab") == 0)
4049 || _bfd_elf_section_offset (output_bfd, info,
4050 input_section,
4051 rel->r_offset)
4052 == (bfd_vma)-1))
4053 break;
4054
4055 if (h != NULL)
4056 {
4057 /* Assume this is a call protected by other code that
4058 detect the symbol is undefined. If this is the case,
4059 we can safely ignore the overflow. If not, the
4060 program is hosed anyway, and a little warning isn't
4061 going to help. */
4062 if (h->root.type == bfd_link_hash_undefweak
4063 && howto->pc_relative)
4064 break;
4065
4066 name = NULL;
4067 }
4068 else
4069 {
4070 name = bfd_elf_string_from_elf_section (input_bfd,
4071 symtab_hdr->sh_link,
4072 sym->st_name);
4073 if (name == NULL)
4074 return FALSE;
4075 if (*name == '\0')
4076 name = bfd_section_name (input_bfd, sec);
4077 }
4078 if (! ((*info->callbacks->reloc_overflow)
4079 (info, (h ? &h->root : NULL), name, howto->name,
4080 (bfd_vma) 0, input_bfd, input_section,
4081 rel->r_offset)))
4082 return FALSE;
4083 }
4084 break;
4085 }
4086 }
4087 }
4088
4089 return TRUE;
4090 }
4091
4092 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4093 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4094 is the offset of the associated .got.plt entry from
4095 _GLOBAL_OFFSET_TABLE_. */
4096
4097 static void
4098 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4099 bfd_vma plt_offset, bfd_vma plt_index,
4100 bfd_vma got_offset)
4101 {
4102 bfd_vma got_base;
4103 const bfd_vma *plt_entry;
4104 struct _bfd_sparc_elf_link_hash_table *htab;
4105 bfd_byte *loc;
4106 Elf_Internal_Rela rela;
4107
4108 htab = _bfd_sparc_elf_hash_table (info);
4109 BFD_ASSERT (htab != NULL);
4110
4111 if (info->shared)
4112 {
4113 plt_entry = sparc_vxworks_shared_plt_entry;
4114 got_base = 0;
4115 }
4116 else
4117 {
4118 plt_entry = sparc_vxworks_exec_plt_entry;
4119 got_base = (htab->elf.hgot->root.u.def.value
4120 + htab->elf.hgot->root.u.def.section->output_offset
4121 + htab->elf.hgot->root.u.def.section->output_section->vma);
4122 }
4123
4124 /* Fill in the entry in the procedure linkage table. */
4125 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4126 htab->elf.splt->contents + plt_offset);
4127 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4128 htab->elf.splt->contents + plt_offset + 4);
4129 bfd_put_32 (output_bfd, plt_entry[2],
4130 htab->elf.splt->contents + plt_offset + 8);
4131 bfd_put_32 (output_bfd, plt_entry[3],
4132 htab->elf.splt->contents + plt_offset + 12);
4133 bfd_put_32 (output_bfd, plt_entry[4],
4134 htab->elf.splt->contents + plt_offset + 16);
4135 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4136 htab->elf.splt->contents + plt_offset + 20);
4137 /* PC-relative displacement for a branch to the start of
4138 the PLT section. */
4139 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4140 & 0x003fffff),
4141 htab->elf.splt->contents + plt_offset + 24);
4142 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4143 htab->elf.splt->contents + plt_offset + 28);
4144
4145 /* Fill in the .got.plt entry, pointing initially at the
4146 second half of the PLT entry. */
4147 BFD_ASSERT (htab->elf.sgotplt != NULL);
4148 bfd_put_32 (output_bfd,
4149 htab->elf.splt->output_section->vma
4150 + htab->elf.splt->output_offset
4151 + plt_offset + 20,
4152 htab->elf.sgotplt->contents + got_offset);
4153
4154 /* Add relocations to .rela.plt.unloaded. */
4155 if (!info->shared)
4156 {
4157 loc = (htab->srelplt2->contents
4158 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4159
4160 /* Relocate the initial sethi. */
4161 rela.r_offset = (htab->elf.splt->output_section->vma
4162 + htab->elf.splt->output_offset
4163 + plt_offset);
4164 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4165 rela.r_addend = got_offset;
4166 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4167 loc += sizeof (Elf32_External_Rela);
4168
4169 /* Likewise the following or. */
4170 rela.r_offset += 4;
4171 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4172 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4173 loc += sizeof (Elf32_External_Rela);
4174
4175 /* Relocate the .got.plt entry. */
4176 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4177 + htab->elf.sgotplt->output_offset
4178 + got_offset);
4179 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4180 rela.r_addend = plt_offset + 20;
4181 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4182 }
4183 }
4184
4185 /* Finish up dynamic symbol handling. We set the contents of various
4186 dynamic sections here. */
4187
4188 bfd_boolean
4189 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4190 struct bfd_link_info *info,
4191 struct elf_link_hash_entry *h,
4192 Elf_Internal_Sym *sym)
4193 {
4194 struct _bfd_sparc_elf_link_hash_table *htab;
4195 const struct elf_backend_data *bed;
4196
4197 htab = _bfd_sparc_elf_hash_table (info);
4198 BFD_ASSERT (htab != NULL);
4199 bed = get_elf_backend_data (output_bfd);
4200
4201 if (h->plt.offset != (bfd_vma) -1)
4202 {
4203 asection *splt;
4204 asection *srela;
4205 Elf_Internal_Rela rela;
4206 bfd_byte *loc;
4207 bfd_vma r_offset, got_offset;
4208 int rela_index;
4209
4210 /* When building a static executable, use .iplt and
4211 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4212 if (htab->elf.splt != NULL)
4213 {
4214 splt = htab->elf.splt;
4215 srela = htab->elf.srelplt;
4216 }
4217 else
4218 {
4219 splt = htab->elf.iplt;
4220 srela = htab->elf.irelplt;
4221 }
4222
4223 if (splt == NULL || srela == NULL)
4224 abort ();
4225
4226 /* Fill in the entry in the .rela.plt section. */
4227 if (htab->is_vxworks)
4228 {
4229 /* Work out the index of this PLT entry. */
4230 rela_index = ((h->plt.offset - htab->plt_header_size)
4231 / htab->plt_entry_size);
4232
4233 /* Calculate the offset of the associated .got.plt entry.
4234 The first three entries are reserved. */
4235 got_offset = (rela_index + 3) * 4;
4236
4237 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4238 rela_index, got_offset);
4239
4240
4241 /* On VxWorks, the relocation points to the .got.plt entry,
4242 not the .plt entry. */
4243 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4244 + htab->elf.sgotplt->output_offset
4245 + got_offset);
4246 rela.r_addend = 0;
4247 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4248 R_SPARC_JMP_SLOT);
4249 }
4250 else
4251 {
4252 bfd_boolean ifunc = FALSE;
4253
4254 /* Fill in the entry in the procedure linkage table. */
4255 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4256 h->plt.offset, splt->size,
4257 &r_offset);
4258
4259 if (h == NULL
4260 || h->dynindx == -1
4261 || ((info->executable
4262 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4263 && h->def_regular
4264 && h->type == STT_GNU_IFUNC))
4265 {
4266 ifunc = TRUE;
4267 BFD_ASSERT (h == NULL
4268 || (h->type == STT_GNU_IFUNC
4269 && h->def_regular
4270 && (h->root.type == bfd_link_hash_defined
4271 || h->root.type == bfd_link_hash_defweak)));
4272 }
4273
4274 rela.r_offset = r_offset
4275 + (splt->output_section->vma + splt->output_offset);
4276 if (ABI_64_P (output_bfd)
4277 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4278 {
4279 if (ifunc)
4280 {
4281 rela.r_addend = (h->root.u.def.section->output_section->vma
4282 + h->root.u.def.section->output_offset
4283 + h->root.u.def.value);
4284 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4285 R_SPARC_IRELATIVE);
4286 }
4287 else
4288 {
4289 rela.r_addend = (-(h->plt.offset + 4)
4290 - splt->output_section->vma
4291 - splt->output_offset);
4292 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4293 R_SPARC_JMP_SLOT);
4294 }
4295 }
4296 else
4297 {
4298 if (ifunc)
4299 {
4300 rela.r_addend = (h->root.u.def.section->output_section->vma
4301 + h->root.u.def.section->output_offset
4302 + h->root.u.def.value);
4303 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4304 R_SPARC_JMP_IREL);
4305 }
4306 else
4307 {
4308 rela.r_addend = 0;
4309 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4310 R_SPARC_JMP_SLOT);
4311 }
4312 }
4313 }
4314
4315 /* Adjust for the first 4 reserved elements in the .plt section
4316 when setting the offset in the .rela.plt section.
4317 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4318 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4319
4320 loc = srela->contents;
4321 loc += rela_index * bed->s->sizeof_rela;
4322 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4323
4324 if (!h->def_regular)
4325 {
4326 /* Mark the symbol as undefined, rather than as defined in
4327 the .plt section. Leave the value alone. */
4328 sym->st_shndx = SHN_UNDEF;
4329 /* If the symbol is weak, we do need to clear the value.
4330 Otherwise, the PLT entry would provide a definition for
4331 the symbol even if the symbol wasn't defined anywhere,
4332 and so the symbol would never be NULL. */
4333 if (!h->ref_regular_nonweak)
4334 sym->st_value = 0;
4335 }
4336 }
4337
4338 if (h->got.offset != (bfd_vma) -1
4339 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4340 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4341 {
4342 asection *sgot;
4343 asection *srela;
4344 Elf_Internal_Rela rela;
4345
4346 /* This symbol has an entry in the GOT. Set it up. */
4347
4348 sgot = htab->elf.sgot;
4349 srela = htab->elf.srelgot;
4350 BFD_ASSERT (sgot != NULL && srela != NULL);
4351
4352 rela.r_offset = (sgot->output_section->vma
4353 + sgot->output_offset
4354 + (h->got.offset &~ (bfd_vma) 1));
4355
4356 /* If this is a -Bsymbolic link, and the symbol is defined
4357 locally, we just want to emit a RELATIVE reloc. Likewise if
4358 the symbol was forced to be local because of a version file.
4359 The entry in the global offset table will already have been
4360 initialized in the relocate_section function. */
4361 if (! info->shared
4362 && h->type == STT_GNU_IFUNC
4363 && h->def_regular)
4364 {
4365 asection *plt;
4366
4367 /* We load the GOT entry with the PLT entry. */
4368 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4369 SPARC_ELF_PUT_WORD (htab, output_bfd,
4370 (plt->output_section->vma
4371 + plt->output_offset + h->plt.offset),
4372 htab->elf.sgot->contents
4373 + (h->got.offset & ~(bfd_vma) 1));
4374 return TRUE;
4375 }
4376 else if (info->shared
4377 && SYMBOL_REFERENCES_LOCAL (info, h))
4378 {
4379 asection *sec = h->root.u.def.section;
4380 if (h->type == STT_GNU_IFUNC)
4381 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4382 else
4383 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4384 rela.r_addend = (h->root.u.def.value
4385 + sec->output_section->vma
4386 + sec->output_offset);
4387 }
4388 else
4389 {
4390 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4391 rela.r_addend = 0;
4392 }
4393
4394 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4395 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4396 sparc_elf_append_rela (output_bfd, srela, &rela);
4397 }
4398
4399 if (h->needs_copy)
4400 {
4401 asection *s;
4402 Elf_Internal_Rela rela;
4403
4404 /* This symbols needs a copy reloc. Set it up. */
4405 BFD_ASSERT (h->dynindx != -1);
4406
4407 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4408 ".rela.bss");
4409 BFD_ASSERT (s != NULL);
4410
4411 rela.r_offset = (h->root.u.def.value
4412 + h->root.u.def.section->output_section->vma
4413 + h->root.u.def.section->output_offset);
4414 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4415 rela.r_addend = 0;
4416 sparc_elf_append_rela (output_bfd, s, &rela);
4417 }
4418
4419 /* Mark some specially defined symbols as absolute. On VxWorks,
4420 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4421 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4422 if (sym != NULL
4423 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4424 || (!htab->is_vxworks
4425 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4426 sym->st_shndx = SHN_ABS;
4427
4428 return TRUE;
4429 }
4430
4431 /* Finish up the dynamic sections. */
4432
4433 static bfd_boolean
4434 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4435 bfd *dynobj, asection *sdyn,
4436 asection *splt ATTRIBUTE_UNUSED)
4437 {
4438 struct _bfd_sparc_elf_link_hash_table *htab;
4439 const struct elf_backend_data *bed;
4440 bfd_byte *dyncon, *dynconend;
4441 size_t dynsize;
4442 int stt_regidx = -1;
4443 bfd_boolean abi_64_p;
4444
4445 htab = _bfd_sparc_elf_hash_table (info);
4446 BFD_ASSERT (htab != NULL);
4447 bed = get_elf_backend_data (output_bfd);
4448 dynsize = bed->s->sizeof_dyn;
4449 dynconend = sdyn->contents + sdyn->size;
4450 abi_64_p = ABI_64_P (output_bfd);
4451 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4452 {
4453 Elf_Internal_Dyn dyn;
4454 const char *name;
4455 bfd_boolean size;
4456
4457 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4458
4459 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4460 {
4461 /* On VxWorks, DT_RELASZ should not include the relocations
4462 in .rela.plt. */
4463 if (htab->elf.srelplt)
4464 {
4465 dyn.d_un.d_val -= htab->elf.srelplt->size;
4466 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4467 }
4468 }
4469 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4470 {
4471 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4472 not to the start of the PLT. */
4473 if (htab->elf.sgotplt)
4474 {
4475 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4476 + htab->elf.sgotplt->output_offset);
4477 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4478 }
4479 }
4480 else if (htab->is_vxworks
4481 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4482 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4483 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4484 {
4485 if (stt_regidx == -1)
4486 {
4487 stt_regidx =
4488 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4489 if (stt_regidx == -1)
4490 return FALSE;
4491 }
4492 dyn.d_un.d_val = stt_regidx++;
4493 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4494 }
4495 else
4496 {
4497 switch (dyn.d_tag)
4498 {
4499 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4500 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4501 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4502 default: name = NULL; size = FALSE; break;
4503 }
4504
4505 if (name != NULL)
4506 {
4507 asection *s;
4508
4509 s = bfd_get_section_by_name (output_bfd, name);
4510 if (s == NULL)
4511 dyn.d_un.d_val = 0;
4512 else
4513 {
4514 if (! size)
4515 dyn.d_un.d_ptr = s->vma;
4516 else
4517 dyn.d_un.d_val = s->size;
4518 }
4519 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4520 }
4521 }
4522 }
4523 return TRUE;
4524 }
4525
4526 /* Install the first PLT entry in a VxWorks executable and make sure that
4527 .rela.plt.unloaded relocations have the correct symbol indexes. */
4528
4529 static void
4530 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4531 {
4532 struct _bfd_sparc_elf_link_hash_table *htab;
4533 Elf_Internal_Rela rela;
4534 bfd_vma got_base;
4535 bfd_byte *loc;
4536
4537 htab = _bfd_sparc_elf_hash_table (info);
4538 BFD_ASSERT (htab != NULL);
4539
4540 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4541 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4542 + htab->elf.hgot->root.u.def.section->output_offset
4543 + htab->elf.hgot->root.u.def.value);
4544
4545 /* Install the initial PLT entry. */
4546 bfd_put_32 (output_bfd,
4547 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4548 htab->elf.splt->contents);
4549 bfd_put_32 (output_bfd,
4550 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4551 htab->elf.splt->contents + 4);
4552 bfd_put_32 (output_bfd,
4553 sparc_vxworks_exec_plt0_entry[2],
4554 htab->elf.splt->contents + 8);
4555 bfd_put_32 (output_bfd,
4556 sparc_vxworks_exec_plt0_entry[3],
4557 htab->elf.splt->contents + 12);
4558 bfd_put_32 (output_bfd,
4559 sparc_vxworks_exec_plt0_entry[4],
4560 htab->elf.splt->contents + 16);
4561
4562 loc = htab->srelplt2->contents;
4563
4564 /* Add an unloaded relocation for the initial entry's "sethi". */
4565 rela.r_offset = (htab->elf.splt->output_section->vma
4566 + htab->elf.splt->output_offset);
4567 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4568 rela.r_addend = 8;
4569 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4570 loc += sizeof (Elf32_External_Rela);
4571
4572 /* Likewise the following "or". */
4573 rela.r_offset += 4;
4574 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4575 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4576 loc += sizeof (Elf32_External_Rela);
4577
4578 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4579 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4580 in which symbols were output. */
4581 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4582 {
4583 Elf_Internal_Rela rel;
4584
4585 /* The entry's initial "sethi" (against _G_O_T_). */
4586 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4587 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4588 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4589 loc += sizeof (Elf32_External_Rela);
4590
4591 /* The following "or" (also against _G_O_T_). */
4592 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4593 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4594 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4595 loc += sizeof (Elf32_External_Rela);
4596
4597 /* The .got.plt entry (against _P_L_T_). */
4598 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4599 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4600 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4601 loc += sizeof (Elf32_External_Rela);
4602 }
4603 }
4604
4605 /* Install the first PLT entry in a VxWorks shared object. */
4606
4607 static void
4608 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4609 {
4610 struct _bfd_sparc_elf_link_hash_table *htab;
4611 unsigned int i;
4612
4613 htab = _bfd_sparc_elf_hash_table (info);
4614 BFD_ASSERT (htab != NULL);
4615
4616 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4617 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4618 htab->elf.splt->contents + i * 4);
4619 }
4620
4621 /* Finish up local dynamic symbol handling. We set the contents of
4622 various dynamic sections here. */
4623
4624 static bfd_boolean
4625 finish_local_dynamic_symbol (void **slot, void *inf)
4626 {
4627 struct elf_link_hash_entry *h
4628 = (struct elf_link_hash_entry *) *slot;
4629 struct bfd_link_info *info
4630 = (struct bfd_link_info *) inf;
4631
4632 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4633 h, NULL);
4634 }
4635
4636 bfd_boolean
4637 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4638 {
4639 bfd *dynobj;
4640 asection *sdyn;
4641 struct _bfd_sparc_elf_link_hash_table *htab;
4642
4643 htab = _bfd_sparc_elf_hash_table (info);
4644 BFD_ASSERT (htab != NULL);
4645 dynobj = htab->elf.dynobj;
4646
4647 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4648
4649 if (elf_hash_table (info)->dynamic_sections_created)
4650 {
4651 asection *splt;
4652
4653 splt = bfd_get_section_by_name (dynobj, ".plt");
4654 BFD_ASSERT (splt != NULL && sdyn != NULL);
4655
4656 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4657 return FALSE;
4658
4659 /* Initialize the contents of the .plt section. */
4660 if (splt->size > 0)
4661 {
4662 if (htab->is_vxworks)
4663 {
4664 if (info->shared)
4665 sparc_vxworks_finish_shared_plt (output_bfd, info);
4666 else
4667 sparc_vxworks_finish_exec_plt (output_bfd, info);
4668 }
4669 else
4670 {
4671 memset (splt->contents, 0, htab->plt_header_size);
4672 if (!ABI_64_P (output_bfd))
4673 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4674 splt->contents + splt->size - 4);
4675 }
4676 }
4677
4678 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4679 = (htab->is_vxworks || !ABI_64_P (output_bfd))
4680 ? 0 : htab->plt_entry_size;
4681 }
4682
4683 /* Set the first entry in the global offset table to the address of
4684 the dynamic section. */
4685 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4686 {
4687 bfd_vma val = (sdyn ?
4688 sdyn->output_section->vma + sdyn->output_offset :
4689 0);
4690
4691 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4692 }
4693
4694 if (htab->elf.sgot)
4695 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4696 SPARC_ELF_WORD_BYTES (htab);
4697
4698 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4699 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4700
4701 return TRUE;
4702 }
4703
4704 \f
4705 /* Set the right machine number for a SPARC ELF file. */
4706
4707 bfd_boolean
4708 _bfd_sparc_elf_object_p (bfd *abfd)
4709 {
4710 if (ABI_64_P (abfd))
4711 {
4712 unsigned long mach = bfd_mach_sparc_v9;
4713
4714 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4715 mach = bfd_mach_sparc_v9b;
4716 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4717 mach = bfd_mach_sparc_v9a;
4718 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4719 }
4720 else
4721 {
4722 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4723 {
4724 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4725 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4726 bfd_mach_sparc_v8plusb);
4727 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4728 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4729 bfd_mach_sparc_v8plusa);
4730 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4731 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4732 bfd_mach_sparc_v8plus);
4733 else
4734 return FALSE;
4735 }
4736 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4737 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4738 bfd_mach_sparc_sparclite_le);
4739 else
4740 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4741 }
4742 }
4743
4744 /* Return address for Ith PLT stub in section PLT, for relocation REL
4745 or (bfd_vma) -1 if it should not be included. */
4746
4747 bfd_vma
4748 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4749 {
4750 if (ABI_64_P (plt->owner))
4751 {
4752 bfd_vma j;
4753
4754 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4755 if (i < PLT64_LARGE_THRESHOLD)
4756 return plt->vma + i * PLT64_ENTRY_SIZE;
4757
4758 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4759 i -= j;
4760 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4761 }
4762 else
4763 return rel->address;
4764 }
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