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[binutils.git] / bfd / elfxx-sparc.c
blob7b815557ff029b7f7fc897c212f5ed535b6c00c0
1 /* SPARC-specific support for ELF
2 Copyright 2005, 2006, 2007, 2008 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
35 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
36 #define MINUS_ONE (~ (bfd_vma) 0)
37
38 #define ABI_64_P(abfd) \
39 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
40
41 /* The relocation "howto" table. */
42
43 /* Utility for performing the standard initial work of an instruction
44 relocation.
45 *PRELOCATION will contain the relocated item.
46 *PINSN will contain the instruction from the input stream.
47 If the result is `bfd_reloc_other' the caller can continue with
48 performing the relocation. Otherwise it must stop and return the
49 value to its caller. */
50
51 static bfd_reloc_status_type
52 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
53 PTR data, asection *input_section, bfd *output_bfd,
54 bfd_vma *prelocation, bfd_vma *pinsn)
55 {
56 bfd_vma relocation;
57 reloc_howto_type *howto = reloc_entry->howto;
58
59 if (output_bfd != (bfd *) NULL
60 && (symbol->flags & BSF_SECTION_SYM) == 0
61 && (! howto->partial_inplace
62 || reloc_entry->addend == 0))
63 {
64 reloc_entry->address += input_section->output_offset;
65 return bfd_reloc_ok;
66 }
67
68 /* This works because partial_inplace is FALSE. */
69 if (output_bfd != NULL)
70 return bfd_reloc_continue;
71
72 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
73 return bfd_reloc_outofrange;
74
75 relocation = (symbol->value
76 + symbol->section->output_section->vma
77 + symbol->section->output_offset);
78 relocation += reloc_entry->addend;
79 if (howto->pc_relative)
80 {
81 relocation -= (input_section->output_section->vma
82 + input_section->output_offset);
83 relocation -= reloc_entry->address;
84 }
85
86 *prelocation = relocation;
87 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
88 return bfd_reloc_other;
89 }
90
91 /* For unsupported relocs. */
92
93 static bfd_reloc_status_type
94 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
95 arelent *reloc_entry ATTRIBUTE_UNUSED,
96 asymbol *symbol ATTRIBUTE_UNUSED,
97 PTR data ATTRIBUTE_UNUSED,
98 asection *input_section ATTRIBUTE_UNUSED,
99 bfd *output_bfd ATTRIBUTE_UNUSED,
100 char **error_message ATTRIBUTE_UNUSED)
101 {
102 return bfd_reloc_notsupported;
103 }
104
105 /* Handle the WDISP16 reloc. */
106
107 static bfd_reloc_status_type
108 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
109 PTR data, asection *input_section, bfd *output_bfd,
110 char **error_message ATTRIBUTE_UNUSED)
111 {
112 bfd_vma relocation;
113 bfd_vma insn;
114 bfd_reloc_status_type status;
115
116 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
117 input_section, output_bfd, &relocation, &insn);
118 if (status != bfd_reloc_other)
119 return status;
120
121 insn &= ~ (bfd_vma) 0x303fff;
122 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
123 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
124
125 if ((bfd_signed_vma) relocation < - 0x40000
126 || (bfd_signed_vma) relocation > 0x3ffff)
127 return bfd_reloc_overflow;
128 else
129 return bfd_reloc_ok;
130 }
131
132 /* Handle the HIX22 reloc. */
133
134 static bfd_reloc_status_type
135 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
136 PTR data, asection *input_section, bfd *output_bfd,
137 char **error_message ATTRIBUTE_UNUSED)
138 {
139 bfd_vma relocation;
140 bfd_vma insn;
141 bfd_reloc_status_type status;
142
143 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
144 input_section, output_bfd, &relocation, &insn);
145 if (status != bfd_reloc_other)
146 return status;
147
148 relocation ^= MINUS_ONE;
149 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
150 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
151
152 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
153 return bfd_reloc_overflow;
154 else
155 return bfd_reloc_ok;
156 }
157
158 /* Handle the LOX10 reloc. */
159
160 static bfd_reloc_status_type
161 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
162 PTR data, asection *input_section, bfd *output_bfd,
163 char **error_message ATTRIBUTE_UNUSED)
164 {
165 bfd_vma relocation;
166 bfd_vma insn;
167 bfd_reloc_status_type status;
168
169 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
170 input_section, output_bfd, &relocation, &insn);
171 if (status != bfd_reloc_other)
172 return status;
173
174 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
175 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
176
177 return bfd_reloc_ok;
178 }
179
180 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
181 {
182 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
183 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
184 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
185 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
186 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
187 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
188 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
189 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
190 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
191 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
192 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
193 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
194 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
195 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
196 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
197 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
198 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
199 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
200 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
201 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
202 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),
203 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),
204 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
205 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
206 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
207 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
208 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
209 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
210 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
211 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
212 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
213 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
214 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
215 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
216 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
217 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
218 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
219 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),
220 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),
221 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),
222 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
223 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
224 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),
225 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
226 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
227 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
228 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
229 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
230 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
231 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
232 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
233 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
234 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
235 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
236 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
237 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
238 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),
239 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),
240 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),
241 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),
242 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),
243 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),
244 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),
245 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),
246 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),
247 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),
248 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),
249 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),
250 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),
251 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),
252 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),
253 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),
254 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),
255 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),
256 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),
257 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),
258 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),
259 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),
260 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),
261 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),
262 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),
263 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),
264 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),
265 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),
266 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),
267 };
268 static reloc_howto_type sparc_vtinherit_howto =
269 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
270 static reloc_howto_type sparc_vtentry_howto =
271 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);
272 static reloc_howto_type sparc_rev32_howto =
273 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
274
275 struct elf_reloc_map {
276 bfd_reloc_code_real_type bfd_reloc_val;
277 unsigned char elf_reloc_val;
278 };
279
280 static const struct elf_reloc_map sparc_reloc_map[] =
281 {
282 { BFD_RELOC_NONE, R_SPARC_NONE, },
283 { BFD_RELOC_16, R_SPARC_16, },
284 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
285 { BFD_RELOC_8, R_SPARC_8 },
286 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
287 { BFD_RELOC_CTOR, R_SPARC_64 },
288 { BFD_RELOC_32, R_SPARC_32 },
289 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
290 { BFD_RELOC_HI22, R_SPARC_HI22 },
291 { BFD_RELOC_LO10, R_SPARC_LO10, },
292 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
293 { BFD_RELOC_64_PCREL, R_SPARC_DISP64 },
294 { BFD_RELOC_SPARC22, R_SPARC_22 },
295 { BFD_RELOC_SPARC13, R_SPARC_13 },
296 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
297 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
298 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
299 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
300 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
301 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
302 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
303 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
304 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
305 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
306 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
307 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
308 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
309 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
310 { BFD_RELOC_SPARC_10, R_SPARC_10 },
311 { BFD_RELOC_SPARC_11, R_SPARC_11 },
312 { BFD_RELOC_SPARC_64, R_SPARC_64 },
313 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
314 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
315 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
316 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
317 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
318 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
319 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
320 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
321 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
322 { BFD_RELOC_SPARC_7, R_SPARC_7 },
323 { BFD_RELOC_SPARC_5, R_SPARC_5 },
324 { BFD_RELOC_SPARC_6, R_SPARC_6 },
325 { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 },
326 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 },
327 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 },
328 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD },
329 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL },
330 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 },
331 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 },
332 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD },
333 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL },
334 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 },
335 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 },
336 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD },
337 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 },
338 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 },
339 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD },
340 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX },
341 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD },
342 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 },
343 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 },
344 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 },
345 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 },
346 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 },
347 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 },
348 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 },
349 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 },
350 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
351 { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 },
352 { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 },
353 { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 },
354 { BFD_RELOC_SPARC_H44, R_SPARC_H44 },
355 { BFD_RELOC_SPARC_M44, R_SPARC_M44 },
356 { BFD_RELOC_SPARC_L44, R_SPARC_L44 },
357 { BFD_RELOC_SPARC_GOTDATA_HIX22, R_SPARC_GOTDATA_HIX22 },
358 { BFD_RELOC_SPARC_GOTDATA_LOX10, R_SPARC_GOTDATA_LOX10 },
359 { BFD_RELOC_SPARC_GOTDATA_OP_HIX22, R_SPARC_GOTDATA_OP_HIX22 },
360 { BFD_RELOC_SPARC_GOTDATA_OP_LOX10, R_SPARC_GOTDATA_OP_LOX10 },
361 { BFD_RELOC_SPARC_GOTDATA_OP, R_SPARC_GOTDATA_OP },
362 { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER },
363 { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
364 { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
365 { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 },
366 };
367
368 reloc_howto_type *
369 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
370 bfd_reloc_code_real_type code)
371 {
372 unsigned int i;
373
374 switch (code)
375 {
376 case BFD_RELOC_VTABLE_INHERIT:
377 return &sparc_vtinherit_howto;
378
379 case BFD_RELOC_VTABLE_ENTRY:
380 return &sparc_vtentry_howto;
381
382 case BFD_RELOC_SPARC_REV32:
383 return &sparc_rev32_howto;
384
385 default:
386 for (i = 0;
387 i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map);
388 i++)
389 {
390 if (sparc_reloc_map[i].bfd_reloc_val == code)
391 return (_bfd_sparc_elf_howto_table
392 + (int) sparc_reloc_map[i].elf_reloc_val);
393 }
394 }
395 bfd_set_error (bfd_error_bad_value);
396 return NULL;
397 }
398
399 reloc_howto_type *
400 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
401 const char *r_name)
402 {
403 unsigned int i;
404
405 for (i = 0;
406 i < (sizeof (_bfd_sparc_elf_howto_table)
407 / sizeof (_bfd_sparc_elf_howto_table[0]));
408 i++)
409 if (_bfd_sparc_elf_howto_table[i].name != NULL
410 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
411 return &_bfd_sparc_elf_howto_table[i];
412
413 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
414 return &sparc_vtinherit_howto;
415 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
416 return &sparc_vtentry_howto;
417 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
418 return &sparc_rev32_howto;
419
420 return NULL;
421 }
422
423 reloc_howto_type *
424 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
425 {
426 switch (r_type)
427 {
428 case R_SPARC_GNU_VTINHERIT:
429 return &sparc_vtinherit_howto;
430
431 case R_SPARC_GNU_VTENTRY:
432 return &sparc_vtentry_howto;
433
434 case R_SPARC_REV32:
435 return &sparc_rev32_howto;
436
437 default:
438 if (r_type >= (unsigned int) R_SPARC_max_std)
439 {
440 (*_bfd_error_handler) (_("invalid relocation type %d"),
441 (int) r_type);
442 r_type = R_SPARC_NONE;
443 }
444 return &_bfd_sparc_elf_howto_table[r_type];
445 }
446 }
447
448 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
449 so just take advantage of that. */
450 #define SPARC_ELF_R_TYPE(r_info) \
451 ((r_info) & 0xff)
452
453 void
454 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
455 Elf_Internal_Rela *dst)
456 {
457 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
458
459 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
460 }
461 \f
462
463 /* The nop opcode we use. */
464 #define SPARC_NOP 0x01000000
465
466 #define SPARC_INSN_BYTES 4
467
468 /* The SPARC linker needs to keep track of the number of relocs that it
469 decides to copy as dynamic relocs in check_relocs for each symbol.
470 This is so that it can later discard them if they are found to be
471 unnecessary. We store the information in a field extending the
472 regular ELF linker hash table. */
473
474 struct _bfd_sparc_elf_dyn_relocs
475 {
476 struct _bfd_sparc_elf_dyn_relocs *next;
477
478 /* The input section of the reloc. */
479 asection *sec;
480
481 /* Total number of relocs copied for the input section. */
482 bfd_size_type count;
483
484 /* Number of pc-relative relocs copied for the input section. */
485 bfd_size_type pc_count;
486 };
487
488 /* SPARC ELF linker hash entry. */
489
490 struct _bfd_sparc_elf_link_hash_entry
491 {
492 struct elf_link_hash_entry elf;
493
494 /* Track dynamic relocs copied for this symbol. */
495 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
496
497 #define GOT_UNKNOWN 0
498 #define GOT_NORMAL 1
499 #define GOT_TLS_GD 2
500 #define GOT_TLS_IE 3
501 unsigned char tls_type;
502 };
503
504 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
505
506 struct _bfd_sparc_elf_obj_tdata
507 {
508 struct elf_obj_tdata root;
509
510 /* tls_type for each local got entry. */
511 char *local_got_tls_type;
512
513 /* TRUE if TLS GD relocs has been seen for this object. */
514 bfd_boolean has_tlsgd;
515 };
516
517 #define _bfd_sparc_elf_tdata(abfd) \
518 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
519
520 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
521 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
522
523 #define is_sparc_elf(bfd) \
524 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
525 && elf_tdata (bfd) != NULL \
526 && elf_object_id (bfd) == SPARC_ELF_TDATA)
527
528 bfd_boolean
529 _bfd_sparc_elf_mkobject (bfd *abfd)
530 {
531 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
532 SPARC_ELF_TDATA);
533 }
534
535 static void
536 sparc_put_word_32 (bfd *bfd, bfd_vma val, void *ptr)
537 {
538 bfd_put_32 (bfd, val, ptr);
539 }
540
541 static void
542 sparc_put_word_64 (bfd *bfd, bfd_vma val, void *ptr)
543 {
544 bfd_put_64 (bfd, val, ptr);
545 }
546
547 static void
548 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
549 {
550 const struct elf_backend_data *bed;
551 bfd_byte *loc;
552
553 bed = get_elf_backend_data (abfd);
554 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
555 bed->s->swap_reloca_out (abfd, rel, loc);
556 }
557
558 static bfd_vma
559 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
560 bfd_vma index ATTRIBUTE_UNUSED,
561 bfd_vma type ATTRIBUTE_UNUSED)
562 {
563 return ELF64_R_INFO (index,
564 (in_rel ?
565 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
566 type) : type));
567 }
568
569 static bfd_vma
570 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
571 bfd_vma index, bfd_vma type)
572 {
573 return ELF32_R_INFO (index, type);
574 }
575
576 static bfd_vma
577 sparc_elf_r_symndx_64 (bfd_vma r_info)
578 {
579 bfd_vma r_symndx = ELF32_R_SYM (r_info);
580 return (r_symndx >> 24);
581 }
582
583 static bfd_vma
584 sparc_elf_r_symndx_32 (bfd_vma r_info)
585 {
586 return ELF32_R_SYM (r_info);
587 }
588
589 /* PLT/GOT stuff */
590
591 #define PLT32_ENTRY_SIZE 12
592 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
593
594 /* The first four entries in a 32-bit procedure linkage table are reserved,
595 and the initial contents are unimportant (we zero them out).
596 Subsequent entries look like this. See the SVR4 ABI SPARC
597 supplement to see how this works. */
598
599 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
600 #define PLT32_ENTRY_WORD0 0x03000000
601 /* b,a .plt0. We fill in the offset later. */
602 #define PLT32_ENTRY_WORD1 0x30800000
603 /* nop. */
604 #define PLT32_ENTRY_WORD2 SPARC_NOP
605
606 static int
607 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
608 bfd_vma max ATTRIBUTE_UNUSED,
609 bfd_vma *r_offset)
610 {
611 bfd_put_32 (output_bfd,
612 PLT32_ENTRY_WORD0 + offset,
613 splt->contents + offset);
614 bfd_put_32 (output_bfd,
615 (PLT32_ENTRY_WORD1
616 + (((- (offset + 4)) >> 2) & 0x3fffff)),
617 splt->contents + offset + 4);
618 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
619 splt->contents + offset + 8);
620
621 *r_offset = offset;
622
623 return offset / PLT32_ENTRY_SIZE - 4;
624 }
625
626 /* Both the headers and the entries are icache aligned. */
627 #define PLT64_ENTRY_SIZE 32
628 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
629 #define PLT64_LARGE_THRESHOLD 32768
630
631 static int
632 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
633 bfd_vma max, bfd_vma *r_offset)
634 {
635 unsigned char *entry = splt->contents + offset;
636 const unsigned int nop = SPARC_NOP;
637 int index;
638
639 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
640 {
641 unsigned int sethi, ba;
642
643 *r_offset = offset;
644
645 index = (offset / PLT64_ENTRY_SIZE);
646
647 sethi = 0x03000000 | (index * PLT64_ENTRY_SIZE);
648 ba = 0x30680000
649 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
650
651 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
652 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
653 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
654 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
655 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
656 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
657 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
658 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
659 }
660 else
661 {
662 unsigned char *ptr;
663 unsigned int ldx;
664 int block, last_block, ofs, last_ofs, chunks_this_block;
665 const int insn_chunk_size = (6 * 4);
666 const int ptr_chunk_size = (1 * 8);
667 const int entries_per_block = 160;
668 const int block_size = entries_per_block * (insn_chunk_size
669 + ptr_chunk_size);
670
671 /* Entries 32768 and higher are grouped into blocks of 160.
672 The blocks are further subdivided into 160 sequences of
673 6 instructions and 160 pointers. If a block does not require
674 the full 160 entries, let's say it requires N, then there
675 will be N sequences of 6 instructions and N pointers. */
676
677 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
678 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
679
680 block = offset / block_size;
681 last_block = max / block_size;
682 if (block != last_block)
683 {
684 chunks_this_block = 160;
685 }
686 else
687 {
688 last_ofs = max % block_size;
689 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
690 }
691
692 ofs = offset % block_size;
693
694 index = (PLT64_LARGE_THRESHOLD +
695 (block * 160) +
696 (ofs / insn_chunk_size));
697
698 ptr = splt->contents
699 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
700 + (block * block_size)
701 + (chunks_this_block * insn_chunk_size)
702 + (ofs / insn_chunk_size) * ptr_chunk_size;
703
704 *r_offset = (bfd_vma) (ptr - splt->contents);
705
706 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
707
708 /* mov %o7,%g5
709 call .+8
710 nop
711 ldx [%o7+P],%g1
712 jmpl %o7+%g1,%g1
713 mov %g5,%o7 */
714 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
715 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
716 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
717 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
718 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
719 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
720
721 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
722 }
723
724 return index - 4;
725 }
726
727 /* The format of the first PLT entry in a VxWorks executable. */
728 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
729 {
730 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
731 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
732 0xc4008000, /* ld [ %g2 ], %g2 */
733 0x81c08000, /* jmp %g2 */
734 0x01000000 /* nop */
735 };
736
737 /* The format of subsequent PLT entries. */
738 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
739 {
740 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
741 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
742 0xc2004000, /* ld [ %g1 ], %g1 */
743 0x81c04000, /* jmp %g1 */
744 0x01000000, /* nop */
745 0x03000000, /* sethi %hi(f@pltindex), %g1 */
746 0x10800000, /* b _PLT_resolve */
747 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
748 };
749
750 /* The format of the first PLT entry in a VxWorks shared object. */
751 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
752 {
753 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
754 0x81c08000, /* jmp %g2 */
755 0x01000000 /* nop */
756 };
757
758 /* The format of subsequent PLT entries. */
759 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
760 {
761 0x03000000, /* sethi %hi(f@got), %g1 */
762 0x82106000, /* or %g1, %lo(f@got), %g1 */
763 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
764 0x81c04000, /* jmp %g1 */
765 0x01000000, /* nop */
766 0x03000000, /* sethi %hi(f@pltindex), %g1 */
767 0x10800000, /* b _PLT_resolve */
768 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
769 };
770
771 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
772 htab->put_word(bfd, val, ptr)
773
774 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
775 htab->r_info(in_rel, index, type)
776
777 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
778 htab->r_symndx(r_info)
779
780 #define SPARC_ELF_WORD_BYTES(htab) \
781 htab->bytes_per_word
782
783 #define SPARC_ELF_RELA_BYTES(htab) \
784 htab->bytes_per_rela
785
786 #define SPARC_ELF_DTPOFF_RELOC(htab) \
787 htab->dtpoff_reloc
788
789 #define SPARC_ELF_DTPMOD_RELOC(htab) \
790 htab->dtpmod_reloc
791
792 #define SPARC_ELF_TPOFF_RELOC(htab) \
793 htab->tpoff_reloc
794
795 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
796 htab->build_plt_entry (obfd, splt, off, max, r_off)
797
798 /* Create an entry in an SPARC ELF linker hash table. */
799
800 static struct bfd_hash_entry *
801 link_hash_newfunc (struct bfd_hash_entry *entry,
802 struct bfd_hash_table *table, const char *string)
803 {
804 /* Allocate the structure if it has not already been allocated by a
805 subclass. */
806 if (entry == NULL)
807 {
808 entry = bfd_hash_allocate (table,
809 sizeof (struct _bfd_sparc_elf_link_hash_entry));
810 if (entry == NULL)
811 return entry;
812 }
813
814 /* Call the allocation method of the superclass. */
815 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
816 if (entry != NULL)
817 {
818 struct _bfd_sparc_elf_link_hash_entry *eh;
819
820 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
821 eh->dyn_relocs = NULL;
822 eh->tls_type = GOT_UNKNOWN;
823 }
824
825 return entry;
826 }
827
828 /* The name of the dynamic interpreter. This is put in the .interp
829 section. */
830
831 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
832 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
833
834 /* Create a SPARC ELF linker hash table. */
835
836 struct bfd_link_hash_table *
837 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
838 {
839 struct _bfd_sparc_elf_link_hash_table *ret;
840 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
841
842 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
843 if (ret == NULL)
844 return NULL;
845
846 if (ABI_64_P (abfd))
847 {
848 ret->put_word = sparc_put_word_64;
849 ret->r_info = sparc_elf_r_info_64;
850 ret->r_symndx = sparc_elf_r_symndx_64;
851 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
852 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
853 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
854 ret->word_align_power = 3;
855 ret->align_power_max = 4;
856 ret->bytes_per_word = 8;
857 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
858 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
859 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
860 }
861 else
862 {
863 ret->put_word = sparc_put_word_32;
864 ret->r_info = sparc_elf_r_info_32;
865 ret->r_symndx = sparc_elf_r_symndx_32;
866 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
867 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
868 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
869 ret->word_align_power = 2;
870 ret->align_power_max = 3;
871 ret->bytes_per_word = 4;
872 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
873 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
874 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
875 }
876
877 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
878 sizeof (struct _bfd_sparc_elf_link_hash_entry)))
879 {
880 free (ret);
881 return NULL;
882 }
883
884 return &ret->elf.root;
885 }
886
887 /* Create .got and .rela.got sections in DYNOBJ, and set up
888 shortcuts to them in our hash table. */
889
890 static bfd_boolean
891 create_got_section (bfd *dynobj, struct bfd_link_info *info)
892 {
893 struct _bfd_sparc_elf_link_hash_table *htab;
894
895 if (! _bfd_elf_create_got_section (dynobj, info))
896 return FALSE;
897
898 htab = _bfd_sparc_elf_hash_table (info);
899 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
900 BFD_ASSERT (htab->sgot != NULL);
901
902 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
903 SEC_ALLOC
904 | SEC_LOAD
905 | SEC_HAS_CONTENTS
906 | SEC_IN_MEMORY
907 | SEC_LINKER_CREATED
908 | SEC_READONLY);
909 if (htab->srelgot == NULL
910 || ! bfd_set_section_alignment (dynobj, htab->srelgot,
911 htab->word_align_power))
912 return FALSE;
913
914 if (htab->is_vxworks)
915 {
916 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
917 if (!htab->sgotplt)
918 return FALSE;
919 }
920
921 return TRUE;
922 }
923
924 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
925 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
926 hash table. */
927
928 bfd_boolean
929 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
930 struct bfd_link_info *info)
931 {
932 struct _bfd_sparc_elf_link_hash_table *htab;
933
934 htab = _bfd_sparc_elf_hash_table (info);
935 if (!htab->sgot && !create_got_section (dynobj, info))
936 return FALSE;
937
938 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
939 return FALSE;
940
941 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
942 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
943 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
944 if (!info->shared)
945 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
946
947 if (htab->is_vxworks)
948 {
949 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
950 return FALSE;
951 if (info->shared)
952 {
953 htab->plt_header_size
954 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
955 htab->plt_entry_size
956 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
957 }
958 else
959 {
960 htab->plt_header_size
961 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
962 htab->plt_entry_size
963 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
964 }
965 }
966 else
967 {
968 if (ABI_64_P (dynobj))
969 {
970 htab->build_plt_entry = sparc64_plt_entry_build;
971 htab->plt_header_size = PLT64_HEADER_SIZE;
972 htab->plt_entry_size = PLT64_ENTRY_SIZE;
973 }
974 else
975 {
976 htab->build_plt_entry = sparc32_plt_entry_build;
977 htab->plt_header_size = PLT32_HEADER_SIZE;
978 htab->plt_entry_size = PLT32_ENTRY_SIZE;
979 }
980 }
981
982 if (!htab->splt || !htab->srelplt || !htab->sdynbss
983 || (!info->shared && !htab->srelbss))
984 abort ();
985
986 return TRUE;
987 }
988
989 /* Copy the extra info we tack onto an elf_link_hash_entry. */
990
991 void
992 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
993 struct elf_link_hash_entry *dir,
994 struct elf_link_hash_entry *ind)
995 {
996 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
997
998 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
999 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1000
1001 if (eind->dyn_relocs != NULL)
1002 {
1003 if (edir->dyn_relocs != NULL)
1004 {
1005 struct _bfd_sparc_elf_dyn_relocs **pp;
1006 struct _bfd_sparc_elf_dyn_relocs *p;
1007
1008 /* Add reloc counts against the indirect sym to the direct sym
1009 list. Merge any entries against the same section. */
1010 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1011 {
1012 struct _bfd_sparc_elf_dyn_relocs *q;
1013
1014 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1015 if (q->sec == p->sec)
1016 {
1017 q->pc_count += p->pc_count;
1018 q->count += p->count;
1019 *pp = p->next;
1020 break;
1021 }
1022 if (q == NULL)
1023 pp = &p->next;
1024 }
1025 *pp = edir->dyn_relocs;
1026 }
1027
1028 edir->dyn_relocs = eind->dyn_relocs;
1029 eind->dyn_relocs = NULL;
1030 }
1031
1032 if (ind->root.type == bfd_link_hash_indirect
1033 && dir->got.refcount <= 0)
1034 {
1035 edir->tls_type = eind->tls_type;
1036 eind->tls_type = GOT_UNKNOWN;
1037 }
1038 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1039 }
1040
1041 static int
1042 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1043 int r_type, int is_local)
1044 {
1045 if (! ABI_64_P (abfd)
1046 && r_type == R_SPARC_TLS_GD_HI22
1047 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1048 r_type = R_SPARC_REV32;
1049
1050 if (info->shared)
1051 return r_type;
1052
1053 switch (r_type)
1054 {
1055 case R_SPARC_TLS_GD_HI22:
1056 if (is_local)
1057 return R_SPARC_TLS_LE_HIX22;
1058 return R_SPARC_TLS_IE_HI22;
1059 case R_SPARC_TLS_GD_LO10:
1060 if (is_local)
1061 return R_SPARC_TLS_LE_LOX10;
1062 return R_SPARC_TLS_IE_LO10;
1063 case R_SPARC_TLS_IE_HI22:
1064 if (is_local)
1065 return R_SPARC_TLS_LE_HIX22;
1066 return r_type;
1067 case R_SPARC_TLS_IE_LO10:
1068 if (is_local)
1069 return R_SPARC_TLS_LE_LOX10;
1070 return r_type;
1071 case R_SPARC_TLS_LDM_HI22:
1072 return R_SPARC_TLS_LE_HIX22;
1073 case R_SPARC_TLS_LDM_LO10:
1074 return R_SPARC_TLS_LE_LOX10;
1075 }
1076
1077 return r_type;
1078 }
1079 \f
1080 /* Look through the relocs for a section during the first phase, and
1081 allocate space in the global offset table or procedure linkage
1082 table. */
1083
1084 bfd_boolean
1085 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1086 asection *sec, const Elf_Internal_Rela *relocs)
1087 {
1088 struct _bfd_sparc_elf_link_hash_table *htab;
1089 Elf_Internal_Shdr *symtab_hdr;
1090 struct elf_link_hash_entry **sym_hashes;
1091 bfd_vma *local_got_offsets;
1092 const Elf_Internal_Rela *rel;
1093 const Elf_Internal_Rela *rel_end;
1094 asection *sreloc;
1095 int num_relocs;
1096 bfd_boolean checked_tlsgd = FALSE;
1097
1098 if (info->relocatable)
1099 return TRUE;
1100
1101 htab = _bfd_sparc_elf_hash_table (info);
1102 symtab_hdr = &elf_symtab_hdr (abfd);
1103 sym_hashes = elf_sym_hashes (abfd);
1104 local_got_offsets = elf_local_got_offsets (abfd);
1105
1106 sreloc = NULL;
1107
1108 if (ABI_64_P (abfd))
1109 num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr);
1110 else
1111 num_relocs = sec->reloc_count;
1112
1113 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1114
1115 rel_end = relocs + num_relocs;
1116 for (rel = relocs; rel < rel_end; rel++)
1117 {
1118 unsigned int r_type;
1119 unsigned long r_symndx;
1120 struct elf_link_hash_entry *h;
1121
1122 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1123 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1124
1125 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1126 {
1127 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1128 abfd, r_symndx);
1129 return FALSE;
1130 }
1131
1132 if (r_symndx < symtab_hdr->sh_info)
1133 h = NULL;
1134 else
1135 {
1136 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1137 while (h->root.type == bfd_link_hash_indirect
1138 || h->root.type == bfd_link_hash_warning)
1139 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1140 }
1141
1142 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1143 with R_SPARC_TLS_GD_HI22. */
1144 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1145 switch (r_type)
1146 {
1147 case R_SPARC_TLS_GD_HI22:
1148 {
1149 const Elf_Internal_Rela *relt;
1150
1151 for (relt = rel + 1; relt < rel_end; relt++)
1152 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1153 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1154 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1155 break;
1156 checked_tlsgd = TRUE;
1157 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1158 }
1159 break;
1160 case R_SPARC_TLS_GD_LO10:
1161 case R_SPARC_TLS_GD_ADD:
1162 case R_SPARC_TLS_GD_CALL:
1163 checked_tlsgd = TRUE;
1164 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1165 break;
1166 }
1167
1168 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1169 switch (r_type)
1170 {
1171 case R_SPARC_TLS_LDM_HI22:
1172 case R_SPARC_TLS_LDM_LO10:
1173 htab->tls_ldm_got.refcount += 1;
1174 break;
1175
1176 case R_SPARC_TLS_LE_HIX22:
1177 case R_SPARC_TLS_LE_LOX10:
1178 if (info->shared)
1179 goto r_sparc_plt32;
1180 break;
1181
1182 case R_SPARC_TLS_IE_HI22:
1183 case R_SPARC_TLS_IE_LO10:
1184 if (info->shared)
1185 info->flags |= DF_STATIC_TLS;
1186 /* Fall through */
1187
1188 case R_SPARC_GOT10:
1189 case R_SPARC_GOT13:
1190 case R_SPARC_GOT22:
1191 case R_SPARC_GOTDATA_HIX22:
1192 case R_SPARC_GOTDATA_LOX10:
1193 case R_SPARC_GOTDATA_OP_HIX22:
1194 case R_SPARC_GOTDATA_OP_LOX10:
1195 case R_SPARC_TLS_GD_HI22:
1196 case R_SPARC_TLS_GD_LO10:
1197 /* This symbol requires a global offset table entry. */
1198 {
1199 int tls_type, old_tls_type;
1200
1201 switch (r_type)
1202 {
1203 default:
1204 case R_SPARC_GOT10:
1205 case R_SPARC_GOT13:
1206 case R_SPARC_GOT22:
1207 case R_SPARC_GOTDATA_HIX22:
1208 case R_SPARC_GOTDATA_LOX10:
1209 case R_SPARC_GOTDATA_OP_HIX22:
1210 case R_SPARC_GOTDATA_OP_LOX10:
1211 tls_type = GOT_NORMAL;
1212 break;
1213 case R_SPARC_TLS_GD_HI22:
1214 case R_SPARC_TLS_GD_LO10:
1215 tls_type = GOT_TLS_GD;
1216 break;
1217 case R_SPARC_TLS_IE_HI22:
1218 case R_SPARC_TLS_IE_LO10:
1219 tls_type = GOT_TLS_IE;
1220 break;
1221 }
1222
1223 if (h != NULL)
1224 {
1225 h->got.refcount += 1;
1226 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1227 }
1228 else
1229 {
1230 bfd_signed_vma *local_got_refcounts;
1231
1232 /* This is a global offset table entry for a local symbol. */
1233 local_got_refcounts = elf_local_got_refcounts (abfd);
1234 if (local_got_refcounts == NULL)
1235 {
1236 bfd_size_type size;
1237
1238 size = symtab_hdr->sh_info;
1239 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1240 local_got_refcounts = ((bfd_signed_vma *)
1241 bfd_zalloc (abfd, size));
1242 if (local_got_refcounts == NULL)
1243 return FALSE;
1244 elf_local_got_refcounts (abfd) = local_got_refcounts;
1245 _bfd_sparc_elf_local_got_tls_type (abfd)
1246 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1247 }
1248 local_got_refcounts[r_symndx] += 1;
1249 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1250 }
1251
1252 /* If a TLS symbol is accessed using IE at least once,
1253 there is no point to use dynamic model for it. */
1254 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1255 && (old_tls_type != GOT_TLS_GD
1256 || tls_type != GOT_TLS_IE))
1257 {
1258 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1259 tls_type = old_tls_type;
1260 else
1261 {
1262 (*_bfd_error_handler)
1263 (_("%B: `%s' accessed both as normal and thread local symbol"),
1264 abfd, h ? h->root.root.string : "<local>");
1265 return FALSE;
1266 }
1267 }
1268
1269 if (old_tls_type != tls_type)
1270 {
1271 if (h != NULL)
1272 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1273 else
1274 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1275 }
1276 }
1277
1278 if (htab->sgot == NULL)
1279 {
1280 if (htab->elf.dynobj == NULL)
1281 htab->elf.dynobj = abfd;
1282 if (!create_got_section (htab->elf.dynobj, info))
1283 return FALSE;
1284 }
1285 break;
1286
1287 case R_SPARC_TLS_GD_CALL:
1288 case R_SPARC_TLS_LDM_CALL:
1289 if (info->shared)
1290 {
1291 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1292 __tls_get_addr. */
1293 struct bfd_link_hash_entry *bh = NULL;
1294 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1295 "__tls_get_addr", 0,
1296 bfd_und_section_ptr, 0,
1297 NULL, FALSE, FALSE,
1298 &bh))
1299 return FALSE;
1300 h = (struct elf_link_hash_entry *) bh;
1301 }
1302 else
1303 break;
1304 /* Fall through */
1305
1306 case R_SPARC_PLT32:
1307 case R_SPARC_WPLT30:
1308 case R_SPARC_HIPLT22:
1309 case R_SPARC_LOPLT10:
1310 case R_SPARC_PCPLT32:
1311 case R_SPARC_PCPLT22:
1312 case R_SPARC_PCPLT10:
1313 case R_SPARC_PLT64:
1314 /* This symbol requires a procedure linkage table entry. We
1315 actually build the entry in adjust_dynamic_symbol,
1316 because this might be a case of linking PIC code without
1317 linking in any dynamic objects, in which case we don't
1318 need to generate a procedure linkage table after all. */
1319
1320 if (h == NULL)
1321 {
1322 if (! ABI_64_P (abfd))
1323 {
1324 /* The Solaris native assembler will generate a WPLT30
1325 reloc for a local symbol if you assemble a call from
1326 one section to another when using -K pic. We treat
1327 it as WDISP30. */
1328 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1329 goto r_sparc_plt32;
1330 break;
1331 }
1332
1333 /* It does not make sense to have a procedure linkage
1334 table entry for a local symbol. */
1335 bfd_set_error (bfd_error_bad_value);
1336 return FALSE;
1337 }
1338
1339 h->needs_plt = 1;
1340
1341 {
1342 int this_r_type;
1343
1344 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1345 if (this_r_type == R_SPARC_PLT32
1346 || this_r_type == R_SPARC_PLT64)
1347 goto r_sparc_plt32;
1348 }
1349 h->plt.refcount += 1;
1350 break;
1351
1352 case R_SPARC_PC10:
1353 case R_SPARC_PC22:
1354 case R_SPARC_PC_HH22:
1355 case R_SPARC_PC_HM10:
1356 case R_SPARC_PC_LM22:
1357 if (h != NULL)
1358 h->non_got_ref = 1;
1359
1360 if (h != NULL
1361 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1362 break;
1363 /* Fall through. */
1364
1365 case R_SPARC_DISP8:
1366 case R_SPARC_DISP16:
1367 case R_SPARC_DISP32:
1368 case R_SPARC_DISP64:
1369 case R_SPARC_WDISP30:
1370 case R_SPARC_WDISP22:
1371 case R_SPARC_WDISP19:
1372 case R_SPARC_WDISP16:
1373 case R_SPARC_8:
1374 case R_SPARC_16:
1375 case R_SPARC_32:
1376 case R_SPARC_HI22:
1377 case R_SPARC_22:
1378 case R_SPARC_13:
1379 case R_SPARC_LO10:
1380 case R_SPARC_UA16:
1381 case R_SPARC_UA32:
1382 case R_SPARC_10:
1383 case R_SPARC_11:
1384 case R_SPARC_64:
1385 case R_SPARC_OLO10:
1386 case R_SPARC_HH22:
1387 case R_SPARC_HM10:
1388 case R_SPARC_LM22:
1389 case R_SPARC_7:
1390 case R_SPARC_5:
1391 case R_SPARC_6:
1392 case R_SPARC_HIX22:
1393 case R_SPARC_LOX10:
1394 case R_SPARC_H44:
1395 case R_SPARC_M44:
1396 case R_SPARC_L44:
1397 case R_SPARC_UA64:
1398 if (h != NULL)
1399 h->non_got_ref = 1;
1400
1401 r_sparc_plt32:
1402 if (h != NULL && !info->shared)
1403 {
1404 /* We may need a .plt entry if the function this reloc
1405 refers to is in a shared lib. */
1406 h->plt.refcount += 1;
1407 }
1408
1409 /* If we are creating a shared library, and this is a reloc
1410 against a global symbol, or a non PC relative reloc
1411 against a local symbol, then we need to copy the reloc
1412 into the shared library. However, if we are linking with
1413 -Bsymbolic, we do not need to copy a reloc against a
1414 global symbol which is defined in an object we are
1415 including in the link (i.e., DEF_REGULAR is set). At
1416 this point we have not seen all the input files, so it is
1417 possible that DEF_REGULAR is not set now but will be set
1418 later (it is never cleared). In case of a weak definition,
1419 DEF_REGULAR may be cleared later by a strong definition in
1420 a shared library. We account for that possibility below by
1421 storing information in the relocs_copied field of the hash
1422 table entry. A similar situation occurs when creating
1423 shared libraries and symbol visibility changes render the
1424 symbol local.
1425
1426 If on the other hand, we are creating an executable, we
1427 may need to keep relocations for symbols satisfied by a
1428 dynamic library if we manage to avoid copy relocs for the
1429 symbol. */
1430 if ((info->shared
1431 && (sec->flags & SEC_ALLOC) != 0
1432 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1433 || (h != NULL
1434 && (! info->symbolic
1435 || h->root.type == bfd_link_hash_defweak
1436 || !h->def_regular))))
1437 || (!info->shared
1438 && (sec->flags & SEC_ALLOC) != 0
1439 && h != NULL
1440 && (h->root.type == bfd_link_hash_defweak
1441 || !h->def_regular)))
1442 {
1443 struct _bfd_sparc_elf_dyn_relocs *p;
1444 struct _bfd_sparc_elf_dyn_relocs **head;
1445
1446 /* When creating a shared object, we must copy these
1447 relocs into the output file. We create a reloc
1448 section in dynobj and make room for the reloc. */
1449 if (sreloc == NULL)
1450 {
1451 const char *name;
1452 bfd *dynobj;
1453
1454 name = (bfd_elf_string_from_elf_section
1455 (abfd,
1456 elf_elfheader (abfd)->e_shstrndx,
1457 elf_section_data (sec)->rel_hdr.sh_name));
1458 if (name == NULL)
1459 return FALSE;
1460
1461 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
1462 && strcmp (bfd_get_section_name (abfd, sec),
1463 name + 5) == 0);
1464
1465 if (htab->elf.dynobj == NULL)
1466 htab->elf.dynobj = abfd;
1467 dynobj = htab->elf.dynobj;
1468
1469 sreloc = bfd_get_section_by_name (dynobj, name);
1470 if (sreloc == NULL)
1471 {
1472 flagword flags;
1473
1474 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1475 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1476 if ((sec->flags & SEC_ALLOC) != 0)
1477 flags |= SEC_ALLOC | SEC_LOAD;
1478 sreloc = bfd_make_section_with_flags (dynobj,
1479 name,
1480 flags);
1481 if (sreloc == NULL
1482 || ! bfd_set_section_alignment (dynobj, sreloc,
1483 htab->word_align_power))
1484 return FALSE;
1485 }
1486 elf_section_data (sec)->sreloc = sreloc;
1487 }
1488
1489 /* If this is a global symbol, we count the number of
1490 relocations we need for this symbol. */
1491 if (h != NULL)
1492 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1493 else
1494 {
1495 /* Track dynamic relocs needed for local syms too.
1496 We really need local syms available to do this
1497 easily. Oh well. */
1498
1499 asection *s;
1500 void *vpp;
1501
1502 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1503 sec, r_symndx);
1504 if (s == NULL)
1505 return FALSE;
1506
1507 vpp = &elf_section_data (s)->local_dynrel;
1508 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1509 }
1510
1511 p = *head;
1512 if (p == NULL || p->sec != sec)
1513 {
1514 bfd_size_type amt = sizeof *p;
1515 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1516 bfd_alloc (htab->elf.dynobj, amt));
1517 if (p == NULL)
1518 return FALSE;
1519 p->next = *head;
1520 *head = p;
1521 p->sec = sec;
1522 p->count = 0;
1523 p->pc_count = 0;
1524 }
1525
1526 p->count += 1;
1527 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1528 p->pc_count += 1;
1529 }
1530
1531 break;
1532
1533 case R_SPARC_GNU_VTINHERIT:
1534 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1535 return FALSE;
1536 break;
1537
1538 case R_SPARC_GNU_VTENTRY:
1539 BFD_ASSERT (h != NULL);
1540 if (h != NULL
1541 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1542 return FALSE;
1543 break;
1544
1545 case R_SPARC_REGISTER:
1546 /* Nothing to do. */
1547 break;
1548
1549 default:
1550 break;
1551 }
1552 }
1553
1554 return TRUE;
1555 }
1556 \f
1557 asection *
1558 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1559 struct bfd_link_info *info,
1560 Elf_Internal_Rela *rel,
1561 struct elf_link_hash_entry *h,
1562 Elf_Internal_Sym *sym)
1563 {
1564 if (h != NULL)
1565 switch (SPARC_ELF_R_TYPE (rel->r_info))
1566 {
1567 case R_SPARC_GNU_VTINHERIT:
1568 case R_SPARC_GNU_VTENTRY:
1569 return NULL;
1570 }
1571
1572 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1573 }
1574
1575 /* Update the got entry reference counts for the section being removed. */
1576 bfd_boolean
1577 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1578 asection *sec, const Elf_Internal_Rela *relocs)
1579 {
1580 struct _bfd_sparc_elf_link_hash_table *htab;
1581 Elf_Internal_Shdr *symtab_hdr;
1582 struct elf_link_hash_entry **sym_hashes;
1583 bfd_signed_vma *local_got_refcounts;
1584 const Elf_Internal_Rela *rel, *relend;
1585
1586 if (info->relocatable)
1587 return TRUE;
1588
1589 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1590
1591 elf_section_data (sec)->local_dynrel = NULL;
1592
1593 htab = _bfd_sparc_elf_hash_table (info);
1594 symtab_hdr = &elf_symtab_hdr (abfd);
1595 sym_hashes = elf_sym_hashes (abfd);
1596 local_got_refcounts = elf_local_got_refcounts (abfd);
1597
1598 relend = relocs + sec->reloc_count;
1599 for (rel = relocs; rel < relend; rel++)
1600 {
1601 unsigned long r_symndx;
1602 unsigned int r_type;
1603 struct elf_link_hash_entry *h = NULL;
1604
1605 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1606 if (r_symndx >= symtab_hdr->sh_info)
1607 {
1608 struct _bfd_sparc_elf_link_hash_entry *eh;
1609 struct _bfd_sparc_elf_dyn_relocs **pp;
1610 struct _bfd_sparc_elf_dyn_relocs *p;
1611
1612 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1613 while (h->root.type == bfd_link_hash_indirect
1614 || h->root.type == bfd_link_hash_warning)
1615 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1616 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1617 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1618 if (p->sec == sec)
1619 {
1620 /* Everything must go for SEC. */
1621 *pp = p->next;
1622 break;
1623 }
1624 }
1625
1626 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1627 r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL);
1628 switch (r_type)
1629 {
1630 case R_SPARC_TLS_LDM_HI22:
1631 case R_SPARC_TLS_LDM_LO10:
1632 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1633 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1634 break;
1635
1636 case R_SPARC_TLS_GD_HI22:
1637 case R_SPARC_TLS_GD_LO10:
1638 case R_SPARC_TLS_IE_HI22:
1639 case R_SPARC_TLS_IE_LO10:
1640 case R_SPARC_GOT10:
1641 case R_SPARC_GOT13:
1642 case R_SPARC_GOT22:
1643 case R_SPARC_GOTDATA_HIX22:
1644 case R_SPARC_GOTDATA_LOX10:
1645 case R_SPARC_GOTDATA_OP_HIX22:
1646 case R_SPARC_GOTDATA_OP_LOX10:
1647 if (h != NULL)
1648 {
1649 if (h->got.refcount > 0)
1650 h->got.refcount--;
1651 }
1652 else
1653 {
1654 if (local_got_refcounts[r_symndx] > 0)
1655 local_got_refcounts[r_symndx]--;
1656 }
1657 break;
1658
1659 case R_SPARC_PC10:
1660 case R_SPARC_PC22:
1661 case R_SPARC_PC_HH22:
1662 case R_SPARC_PC_HM10:
1663 case R_SPARC_PC_LM22:
1664 if (h != NULL
1665 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1666 break;
1667 /* Fall through. */
1668
1669 case R_SPARC_DISP8:
1670 case R_SPARC_DISP16:
1671 case R_SPARC_DISP32:
1672 case R_SPARC_DISP64:
1673 case R_SPARC_WDISP30:
1674 case R_SPARC_WDISP22:
1675 case R_SPARC_WDISP19:
1676 case R_SPARC_WDISP16:
1677 case R_SPARC_8:
1678 case R_SPARC_16:
1679 case R_SPARC_32:
1680 case R_SPARC_HI22:
1681 case R_SPARC_22:
1682 case R_SPARC_13:
1683 case R_SPARC_LO10:
1684 case R_SPARC_UA16:
1685 case R_SPARC_UA32:
1686 case R_SPARC_PLT32:
1687 case R_SPARC_10:
1688 case R_SPARC_11:
1689 case R_SPARC_64:
1690 case R_SPARC_OLO10:
1691 case R_SPARC_HH22:
1692 case R_SPARC_HM10:
1693 case R_SPARC_LM22:
1694 case R_SPARC_7:
1695 case R_SPARC_5:
1696 case R_SPARC_6:
1697 case R_SPARC_HIX22:
1698 case R_SPARC_LOX10:
1699 case R_SPARC_H44:
1700 case R_SPARC_M44:
1701 case R_SPARC_L44:
1702 case R_SPARC_UA64:
1703 if (info->shared)
1704 break;
1705 /* Fall through. */
1706
1707 case R_SPARC_WPLT30:
1708 if (h != NULL)
1709 {
1710 if (h->plt.refcount > 0)
1711 h->plt.refcount--;
1712 }
1713 break;
1714
1715 default:
1716 break;
1717 }
1718 }
1719
1720 return TRUE;
1721 }
1722
1723 /* Adjust a symbol defined by a dynamic object and referenced by a
1724 regular object. The current definition is in some section of the
1725 dynamic object, but we're not including those sections. We have to
1726 change the definition to something the rest of the link can
1727 understand. */
1728
1729 bfd_boolean
1730 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1731 struct elf_link_hash_entry *h)
1732 {
1733 struct _bfd_sparc_elf_link_hash_table *htab;
1734 struct _bfd_sparc_elf_link_hash_entry * eh;
1735 struct _bfd_sparc_elf_dyn_relocs *p;
1736 asection *s;
1737
1738 htab = _bfd_sparc_elf_hash_table (info);
1739
1740 /* Make sure we know what is going on here. */
1741 BFD_ASSERT (htab->elf.dynobj != NULL
1742 && (h->needs_plt
1743 || h->u.weakdef != NULL
1744 || (h->def_dynamic
1745 && h->ref_regular
1746 && !h->def_regular)));
1747
1748 /* If this is a function, put it in the procedure linkage table. We
1749 will fill in the contents of the procedure linkage table later
1750 (although we could actually do it here). The STT_NOTYPE
1751 condition is a hack specifically for the Oracle libraries
1752 delivered for Solaris; for some inexplicable reason, they define
1753 some of their functions as STT_NOTYPE when they really should be
1754 STT_FUNC. */
1755 if (h->type == STT_FUNC
1756 || h->needs_plt
1757 || (h->type == STT_NOTYPE
1758 && (h->root.type == bfd_link_hash_defined
1759 || h->root.type == bfd_link_hash_defweak)
1760 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1761 {
1762 if (h->plt.refcount <= 0
1763 || (! info->shared
1764 && !h->def_dynamic
1765 && !h->ref_dynamic
1766 && h->root.type != bfd_link_hash_undefweak
1767 && h->root.type != bfd_link_hash_undefined))
1768 {
1769 /* This case can occur if we saw a WPLT30 reloc in an input
1770 file, but the symbol was never referred to by a dynamic
1771 object, or if all references were garbage collected. In
1772 such a case, we don't actually need to build a procedure
1773 linkage table, and we can just do a WDISP30 reloc instead. */
1774 h->plt.offset = (bfd_vma) -1;
1775 h->needs_plt = 0;
1776 }
1777
1778 return TRUE;
1779 }
1780 else
1781 h->plt.offset = (bfd_vma) -1;
1782
1783 /* If this is a weak symbol, and there is a real definition, the
1784 processor independent code will have arranged for us to see the
1785 real definition first, and we can just use the same value. */
1786 if (h->u.weakdef != NULL)
1787 {
1788 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1789 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1790 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1791 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1792 return TRUE;
1793 }
1794
1795 /* This is a reference to a symbol defined by a dynamic object which
1796 is not a function. */
1797
1798 /* If we are creating a shared library, we must presume that the
1799 only references to the symbol are via the global offset table.
1800 For such cases we need not do anything here; the relocations will
1801 be handled correctly by relocate_section. */
1802 if (info->shared)
1803 return TRUE;
1804
1805 /* If there are no references to this symbol that do not use the
1806 GOT, we don't need to generate a copy reloc. */
1807 if (!h->non_got_ref)
1808 return TRUE;
1809
1810 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1811 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1812 {
1813 s = p->sec->output_section;
1814 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1815 break;
1816 }
1817
1818 /* If we didn't find any dynamic relocs in read-only sections, then
1819 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1820 if (p == NULL)
1821 {
1822 h->non_got_ref = 0;
1823 return TRUE;
1824 }
1825
1826 if (h->size == 0)
1827 {
1828 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1829 h->root.root.string);
1830 return TRUE;
1831 }
1832
1833 /* We must allocate the symbol in our .dynbss section, which will
1834 become part of the .bss section of the executable. There will be
1835 an entry for this symbol in the .dynsym section. The dynamic
1836 object will contain position independent code, so all references
1837 from the dynamic object to this symbol will go through the global
1838 offset table. The dynamic linker will use the .dynsym entry to
1839 determine the address it must put in the global offset table, so
1840 both the dynamic object and the regular object will refer to the
1841 same memory location for the variable. */
1842
1843 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1844 to copy the initial value out of the dynamic object and into the
1845 runtime process image. We need to remember the offset into the
1846 .rel.bss section we are going to use. */
1847 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1848 {
1849 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
1850 h->needs_copy = 1;
1851 }
1852
1853 s = htab->sdynbss;
1854
1855 return _bfd_elf_adjust_dynamic_copy (h, s);
1856 }
1857
1858 /* Allocate space in .plt, .got and associated reloc sections for
1859 dynamic relocs. */
1860
1861 static bfd_boolean
1862 allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
1863 {
1864 struct bfd_link_info *info;
1865 struct _bfd_sparc_elf_link_hash_table *htab;
1866 struct _bfd_sparc_elf_link_hash_entry *eh;
1867 struct _bfd_sparc_elf_dyn_relocs *p;
1868
1869 if (h->root.type == bfd_link_hash_indirect)
1870 return TRUE;
1871
1872 if (h->root.type == bfd_link_hash_warning)
1873 /* When warning symbols are created, they **replace** the "real"
1874 entry in the hash table, thus we never get to see the real
1875 symbol in a hash traversal. So look at it now. */
1876 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1877
1878 info = (struct bfd_link_info *) inf;
1879 htab = _bfd_sparc_elf_hash_table (info);
1880
1881 if (htab->elf.dynamic_sections_created
1882 && h->plt.refcount > 0)
1883 {
1884 /* Make sure this symbol is output as a dynamic symbol.
1885 Undefined weak syms won't yet be marked as dynamic. */
1886 if (h->dynindx == -1
1887 && !h->forced_local)
1888 {
1889 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1890 return FALSE;
1891 }
1892
1893 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1894 {
1895 asection *s = htab->splt;
1896
1897 /* Allocate room for the header. */
1898 if (s->size == 0)
1899 {
1900 s->size = htab->plt_header_size;
1901
1902 /* Allocate space for the .rela.plt.unloaded relocations. */
1903 if (htab->is_vxworks && !info->shared)
1904 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
1905 }
1906
1907 /* The procedure linkage table size is bounded by the magnitude
1908 of the offset we can describe in the entry. */
1909 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
1910 (((bfd_vma)1 << 31) << 1) : 0x400000))
1911 {
1912 bfd_set_error (bfd_error_bad_value);
1913 return FALSE;
1914 }
1915
1916 if (SPARC_ELF_WORD_BYTES(htab) == 8
1917 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
1918 {
1919 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
1920
1921
1922 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
1923
1924 h->plt.offset = (s->size - (off * 8));
1925 }
1926 else
1927 h->plt.offset = s->size;
1928
1929 /* If this symbol is not defined in a regular file, and we are
1930 not generating a shared library, then set the symbol to this
1931 location in the .plt. This is required to make function
1932 pointers compare as equal between the normal executable and
1933 the shared library. */
1934 if (! info->shared
1935 && !h->def_regular)
1936 {
1937 h->root.u.def.section = s;
1938 h->root.u.def.value = h->plt.offset;
1939 }
1940
1941 /* Make room for this entry. */
1942 s->size += htab->plt_entry_size;
1943
1944 /* We also need to make an entry in the .rela.plt section. */
1945 htab->srelplt->size += SPARC_ELF_RELA_BYTES (htab);
1946
1947 if (htab->is_vxworks)
1948 {
1949 /* Allocate space for the .got.plt entry. */
1950 htab->sgotplt->size += 4;
1951
1952 /* ...and for the .rela.plt.unloaded relocations. */
1953 if (!info->shared)
1954 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
1955 }
1956 }
1957 else
1958 {
1959 h->plt.offset = (bfd_vma) -1;
1960 h->needs_plt = 0;
1961 }
1962 }
1963 else
1964 {
1965 h->plt.offset = (bfd_vma) -1;
1966 h->needs_plt = 0;
1967 }
1968
1969 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1970 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1971 if (h->got.refcount > 0
1972 && !info->shared
1973 && h->dynindx == -1
1974 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
1975 h->got.offset = (bfd_vma) -1;
1976 else if (h->got.refcount > 0)
1977 {
1978 asection *s;
1979 bfd_boolean dyn;
1980 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1981
1982 /* Make sure this symbol is output as a dynamic symbol.
1983 Undefined weak syms won't yet be marked as dynamic. */
1984 if (h->dynindx == -1
1985 && !h->forced_local)
1986 {
1987 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1988 return FALSE;
1989 }
1990
1991 s = htab->sgot;
1992 h->got.offset = s->size;
1993 s->size += SPARC_ELF_WORD_BYTES (htab);
1994 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1995 if (tls_type == GOT_TLS_GD)
1996 s->size += SPARC_ELF_WORD_BYTES (htab);
1997 dyn = htab->elf.dynamic_sections_created;
1998 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1999 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2000 global. */
2001 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2002 || tls_type == GOT_TLS_IE)
2003 htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2004 else if (tls_type == GOT_TLS_GD)
2005 htab->srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2006 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2007 htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2008 }
2009 else
2010 h->got.offset = (bfd_vma) -1;
2011
2012 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2013 if (eh->dyn_relocs == NULL)
2014 return TRUE;
2015
2016 /* In the shared -Bsymbolic case, discard space allocated for
2017 dynamic pc-relative relocs against symbols which turn out to be
2018 defined in regular objects. For the normal shared case, discard
2019 space for pc-relative relocs that have become local due to symbol
2020 visibility changes. */
2021
2022 if (info->shared)
2023 {
2024 if (h->def_regular
2025 && (h->forced_local
2026 || info->symbolic))
2027 {
2028 struct _bfd_sparc_elf_dyn_relocs **pp;
2029
2030 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2031 {
2032 p->count -= p->pc_count;
2033 p->pc_count = 0;
2034 if (p->count == 0)
2035 *pp = p->next;
2036 else
2037 pp = &p->next;
2038 }
2039 }
2040
2041 if (htab->is_vxworks)
2042 {
2043 struct _bfd_sparc_elf_dyn_relocs **pp;
2044
2045 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2046 {
2047 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2048 *pp = p->next;
2049 else
2050 pp = &p->next;
2051 }
2052 }
2053
2054 /* Also discard relocs on undefined weak syms with non-default
2055 visibility. */
2056 if (eh->dyn_relocs != NULL
2057 && h->root.type == bfd_link_hash_undefweak)
2058 {
2059 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2060 eh->dyn_relocs = NULL;
2061
2062 /* Make sure undefined weak symbols are output as a dynamic
2063 symbol in PIEs. */
2064 else if (h->dynindx == -1
2065 && !h->forced_local)
2066 {
2067 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2068 return FALSE;
2069 }
2070 }
2071 }
2072 else
2073 {
2074 /* For the non-shared case, discard space for relocs against
2075 symbols which turn out to need copy relocs or are not
2076 dynamic. */
2077
2078 if (!h->non_got_ref
2079 && ((h->def_dynamic
2080 && !h->def_regular)
2081 || (htab->elf.dynamic_sections_created
2082 && (h->root.type == bfd_link_hash_undefweak
2083 || h->root.type == bfd_link_hash_undefined))))
2084 {
2085 /* Make sure this symbol is output as a dynamic symbol.
2086 Undefined weak syms won't yet be marked as dynamic. */
2087 if (h->dynindx == -1
2088 && !h->forced_local)
2089 {
2090 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2091 return FALSE;
2092 }
2093
2094 /* If that succeeded, we know we'll be keeping all the
2095 relocs. */
2096 if (h->dynindx != -1)
2097 goto keep;
2098 }
2099
2100 eh->dyn_relocs = NULL;
2101
2102 keep: ;
2103 }
2104
2105 /* Finally, allocate space. */
2106 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2107 {
2108 asection *sreloc = elf_section_data (p->sec)->sreloc;
2109 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2110 }
2111
2112 return TRUE;
2113 }
2114
2115 /* Find any dynamic relocs that apply to read-only sections. */
2116
2117 static bfd_boolean
2118 readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
2119 {
2120 struct _bfd_sparc_elf_link_hash_entry *eh;
2121 struct _bfd_sparc_elf_dyn_relocs *p;
2122
2123 if (h->root.type == bfd_link_hash_warning)
2124 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2125
2126 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2127 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2128 {
2129 asection *s = p->sec->output_section;
2130
2131 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2132 {
2133 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2134
2135 info->flags |= DF_TEXTREL;
2136
2137 /* Not an error, just cut short the traversal. */
2138 return FALSE;
2139 }
2140 }
2141 return TRUE;
2142 }
2143
2144 /* Return true if the dynamic symbol for a given section should be
2145 omitted when creating a shared library. */
2146
2147 bfd_boolean
2148 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2149 struct bfd_link_info *info,
2150 asection *p)
2151 {
2152 /* We keep the .got section symbol so that explicit relocations
2153 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2154 can be turned into relocations against the .got symbol. */
2155 if (strcmp (p->name, ".got") == 0)
2156 return FALSE;
2157
2158 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2159 }
2160
2161 /* Set the sizes of the dynamic sections. */
2162
2163 bfd_boolean
2164 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2165 struct bfd_link_info *info)
2166 {
2167 struct _bfd_sparc_elf_link_hash_table *htab;
2168 bfd *dynobj;
2169 asection *s;
2170 bfd *ibfd;
2171
2172 htab = _bfd_sparc_elf_hash_table (info);
2173 dynobj = htab->elf.dynobj;
2174 BFD_ASSERT (dynobj != NULL);
2175
2176 if (elf_hash_table (info)->dynamic_sections_created)
2177 {
2178 /* Set the contents of the .interp section to the interpreter. */
2179 if (info->executable)
2180 {
2181 s = bfd_get_section_by_name (dynobj, ".interp");
2182 BFD_ASSERT (s != NULL);
2183 s->size = htab->dynamic_interpreter_size;
2184 s->contents = (unsigned char *) htab->dynamic_interpreter;
2185 }
2186 }
2187
2188 /* Set up .got offsets for local syms, and space for local dynamic
2189 relocs. */
2190 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2191 {
2192 bfd_signed_vma *local_got;
2193 bfd_signed_vma *end_local_got;
2194 char *local_tls_type;
2195 bfd_size_type locsymcount;
2196 Elf_Internal_Shdr *symtab_hdr;
2197 asection *srel;
2198
2199 if (! is_sparc_elf (ibfd))
2200 continue;
2201
2202 for (s = ibfd->sections; s != NULL; s = s->next)
2203 {
2204 struct _bfd_sparc_elf_dyn_relocs *p;
2205
2206 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2207 {
2208 if (!bfd_is_abs_section (p->sec)
2209 && bfd_is_abs_section (p->sec->output_section))
2210 {
2211 /* Input section has been discarded, either because
2212 it is a copy of a linkonce section or due to
2213 linker script /DISCARD/, so we'll be discarding
2214 the relocs too. */
2215 }
2216 else if (htab->is_vxworks
2217 && strcmp (p->sec->output_section->name,
2218 ".tls_vars") == 0)
2219 {
2220 /* Relocations in vxworks .tls_vars sections are
2221 handled specially by the loader. */
2222 }
2223 else if (p->count != 0)
2224 {
2225 srel = elf_section_data (p->sec)->sreloc;
2226 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2227 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2228 info->flags |= DF_TEXTREL;
2229 }
2230 }
2231 }
2232
2233 local_got = elf_local_got_refcounts (ibfd);
2234 if (!local_got)
2235 continue;
2236
2237 symtab_hdr = &elf_symtab_hdr (ibfd);
2238 locsymcount = symtab_hdr->sh_info;
2239 end_local_got = local_got + locsymcount;
2240 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2241 s = htab->sgot;
2242 srel = htab->srelgot;
2243 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2244 {
2245 if (*local_got > 0)
2246 {
2247 *local_got = s->size;
2248 s->size += SPARC_ELF_WORD_BYTES (htab);
2249 if (*local_tls_type == GOT_TLS_GD)
2250 s->size += SPARC_ELF_WORD_BYTES (htab);
2251 if (info->shared
2252 || *local_tls_type == GOT_TLS_GD
2253 || *local_tls_type == GOT_TLS_IE)
2254 srel->size += SPARC_ELF_RELA_BYTES (htab);
2255 }
2256 else
2257 *local_got = (bfd_vma) -1;
2258 }
2259 }
2260
2261 if (htab->tls_ldm_got.refcount > 0)
2262 {
2263 /* Allocate 2 got entries and 1 dynamic reloc for
2264 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2265 htab->tls_ldm_got.offset = htab->sgot->size;
2266 htab->sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2267 htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2268 }
2269 else
2270 htab->tls_ldm_got.offset = -1;
2271
2272 /* Allocate global sym .plt and .got entries, and space for global
2273 sym dynamic relocs. */
2274 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2275
2276 if (! ABI_64_P (output_bfd)
2277 && !htab->is_vxworks
2278 && elf_hash_table (info)->dynamic_sections_created)
2279 {
2280 /* Make space for the trailing nop in .plt. */
2281 if (htab->splt->size > 0)
2282 htab->splt->size += 1 * SPARC_INSN_BYTES;
2283
2284 /* If the .got section is more than 0x1000 bytes, we add
2285 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2286 bit relocations have a greater chance of working.
2287
2288 FIXME: Make this optimization work for 64-bit too. */
2289 if (htab->sgot->size >= 0x1000
2290 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2291 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2292 }
2293
2294 /* The check_relocs and adjust_dynamic_symbol entry points have
2295 determined the sizes of the various dynamic sections. Allocate
2296 memory for them. */
2297 for (s = dynobj->sections; s != NULL; s = s->next)
2298 {
2299 if ((s->flags & SEC_LINKER_CREATED) == 0)
2300 continue;
2301
2302 if (s == htab->splt
2303 || s == htab->sgot
2304 || s == htab->sdynbss
2305 || s == htab->sgotplt)
2306 {
2307 /* Strip this section if we don't need it; see the
2308 comment below. */
2309 }
2310 else if (CONST_STRNEQ (s->name, ".rela"))
2311 {
2312 if (s->size != 0)
2313 {
2314 /* We use the reloc_count field as a counter if we need
2315 to copy relocs into the output file. */
2316 s->reloc_count = 0;
2317 }
2318 }
2319 else
2320 {
2321 /* It's not one of our sections. */
2322 continue;
2323 }
2324
2325 if (s->size == 0)
2326 {
2327 /* If we don't need this section, strip it from the
2328 output file. This is mostly to handle .rela.bss and
2329 .rela.plt. We must create both sections in
2330 create_dynamic_sections, because they must be created
2331 before the linker maps input sections to output
2332 sections. The linker does that before
2333 adjust_dynamic_symbol is called, and it is that
2334 function which decides whether anything needs to go
2335 into these sections. */
2336 s->flags |= SEC_EXCLUDE;
2337 continue;
2338 }
2339
2340 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2341 continue;
2342
2343 /* Allocate memory for the section contents. Zero the memory
2344 for the benefit of .rela.plt, which has 4 unused entries
2345 at the beginning, and we don't want garbage. */
2346 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2347 if (s->contents == NULL)
2348 return FALSE;
2349 }
2350
2351 if (elf_hash_table (info)->dynamic_sections_created)
2352 {
2353 /* Add some entries to the .dynamic section. We fill in the
2354 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2355 must add the entries now so that we get the correct size for
2356 the .dynamic section. The DT_DEBUG entry is filled in by the
2357 dynamic linker and used by the debugger. */
2358 #define add_dynamic_entry(TAG, VAL) \
2359 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2360
2361 if (info->executable)
2362 {
2363 if (!add_dynamic_entry (DT_DEBUG, 0))
2364 return FALSE;
2365 }
2366
2367 if (htab->srelplt->size != 0)
2368 {
2369 if (!add_dynamic_entry (DT_PLTGOT, 0)
2370 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2371 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2372 || !add_dynamic_entry (DT_JMPREL, 0))
2373 return FALSE;
2374 }
2375
2376 if (!add_dynamic_entry (DT_RELA, 0)
2377 || !add_dynamic_entry (DT_RELASZ, 0)
2378 || !add_dynamic_entry (DT_RELAENT,
2379 SPARC_ELF_RELA_BYTES (htab)))
2380 return FALSE;
2381
2382 /* If any dynamic relocs apply to a read-only section,
2383 then we need a DT_TEXTREL entry. */
2384 if ((info->flags & DF_TEXTREL) == 0)
2385 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2386 (PTR) info);
2387
2388 if (info->flags & DF_TEXTREL)
2389 {
2390 if (!add_dynamic_entry (DT_TEXTREL, 0))
2391 return FALSE;
2392 }
2393
2394 if (ABI_64_P (output_bfd))
2395 {
2396 int reg;
2397 struct _bfd_sparc_elf_app_reg * app_regs;
2398 struct elf_strtab_hash *dynstr;
2399 struct elf_link_hash_table *eht = elf_hash_table (info);
2400
2401 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2402 entries if needed. */
2403 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2404 dynstr = eht->dynstr;
2405
2406 for (reg = 0; reg < 4; reg++)
2407 if (app_regs [reg].name != NULL)
2408 {
2409 struct elf_link_local_dynamic_entry *entry, *e;
2410
2411 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2412 return FALSE;
2413
2414 entry = (struct elf_link_local_dynamic_entry *)
2415 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2416 if (entry == NULL)
2417 return FALSE;
2418
2419 /* We cheat here a little bit: the symbol will not be local, so we
2420 put it at the end of the dynlocal linked list. We will fix it
2421 later on, as we have to fix other fields anyway. */
2422 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2423 entry->isym.st_size = 0;
2424 if (*app_regs [reg].name != '\0')
2425 entry->isym.st_name
2426 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2427 else
2428 entry->isym.st_name = 0;
2429 entry->isym.st_other = 0;
2430 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2431 STT_REGISTER);
2432 entry->isym.st_shndx = app_regs [reg].shndx;
2433 entry->next = NULL;
2434 entry->input_bfd = output_bfd;
2435 entry->input_indx = -1;
2436
2437 if (eht->dynlocal == NULL)
2438 eht->dynlocal = entry;
2439 else
2440 {
2441 for (e = eht->dynlocal; e->next; e = e->next)
2442 ;
2443 e->next = entry;
2444 }
2445 eht->dynsymcount++;
2446 }
2447 }
2448 if (htab->is_vxworks
2449 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2450 return FALSE;
2451 }
2452 #undef add_dynamic_entry
2453
2454 return TRUE;
2455 }
2456 \f
2457 bfd_boolean
2458 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2459 {
2460 if (!sec->used_by_bfd)
2461 {
2462 struct _bfd_sparc_elf_section_data *sdata;
2463 bfd_size_type amt = sizeof (*sdata);
2464
2465 sdata = bfd_zalloc (abfd, amt);
2466 if (sdata == NULL)
2467 return FALSE;
2468 sec->used_by_bfd = sdata;
2469 }
2470
2471 return _bfd_elf_new_section_hook (abfd, sec);
2472 }
2473
2474 bfd_boolean
2475 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2476 struct bfd_section *section,
2477 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2478 bfd_boolean *again)
2479 {
2480 *again = FALSE;
2481 sec_do_relax (section) = 1;
2482 return TRUE;
2483 }
2484 \f
2485 /* Return the base VMA address which should be subtracted from real addresses
2486 when resolving @dtpoff relocation.
2487 This is PT_TLS segment p_vaddr. */
2488
2489 static bfd_vma
2490 dtpoff_base (struct bfd_link_info *info)
2491 {
2492 /* If tls_sec is NULL, we should have signalled an error already. */
2493 if (elf_hash_table (info)->tls_sec == NULL)
2494 return 0;
2495 return elf_hash_table (info)->tls_sec->vma;
2496 }
2497
2498 /* Return the relocation value for @tpoff relocation
2499 if STT_TLS virtual address is ADDRESS. */
2500
2501 static bfd_vma
2502 tpoff (struct bfd_link_info *info, bfd_vma address)
2503 {
2504 struct elf_link_hash_table *htab = elf_hash_table (info);
2505
2506 /* If tls_sec is NULL, we should have signalled an error already. */
2507 if (htab->tls_sec == NULL)
2508 return 0;
2509 return address - htab->tls_size - htab->tls_sec->vma;
2510 }
2511
2512 /* Relocate a SPARC ELF section. */
2513
2514 bfd_boolean
2515 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2516 struct bfd_link_info *info,
2517 bfd *input_bfd,
2518 asection *input_section,
2519 bfd_byte *contents,
2520 Elf_Internal_Rela *relocs,
2521 Elf_Internal_Sym *local_syms,
2522 asection **local_sections)
2523 {
2524 struct _bfd_sparc_elf_link_hash_table *htab;
2525 Elf_Internal_Shdr *symtab_hdr;
2526 struct elf_link_hash_entry **sym_hashes;
2527 bfd_vma *local_got_offsets;
2528 bfd_vma got_base;
2529 asection *sreloc;
2530 Elf_Internal_Rela *rel;
2531 Elf_Internal_Rela *relend;
2532 int num_relocs;
2533 bfd_boolean is_vxworks_tls;
2534
2535 htab = _bfd_sparc_elf_hash_table (info);
2536 symtab_hdr = &elf_symtab_hdr (input_bfd);
2537 sym_hashes = elf_sym_hashes (input_bfd);
2538 local_got_offsets = elf_local_got_offsets (input_bfd);
2539
2540 if (elf_hash_table (info)->hgot == NULL)
2541 got_base = 0;
2542 else
2543 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2544
2545 sreloc = elf_section_data (input_section)->sreloc;
2546 /* We have to handle relocations in vxworks .tls_vars sections
2547 specially, because the dynamic loader is 'weird'. */
2548 is_vxworks_tls = (htab->is_vxworks && info->shared
2549 && !strcmp (input_section->output_section->name,
2550 ".tls_vars"));
2551
2552 rel = relocs;
2553 if (ABI_64_P (output_bfd))
2554 num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr);
2555 else
2556 num_relocs = input_section->reloc_count;
2557 relend = relocs + num_relocs;
2558 for (; rel < relend; rel++)
2559 {
2560 int r_type, tls_type;
2561 reloc_howto_type *howto;
2562 unsigned long r_symndx;
2563 struct elf_link_hash_entry *h;
2564 Elf_Internal_Sym *sym;
2565 asection *sec;
2566 bfd_vma relocation, off;
2567 bfd_reloc_status_type r;
2568 bfd_boolean is_plt = FALSE;
2569 bfd_boolean unresolved_reloc;
2570
2571 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2572 if (r_type == R_SPARC_GNU_VTINHERIT
2573 || r_type == R_SPARC_GNU_VTENTRY)
2574 continue;
2575
2576 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2577 {
2578 bfd_set_error (bfd_error_bad_value);
2579 return FALSE;
2580 }
2581 howto = _bfd_sparc_elf_howto_table + r_type;
2582
2583 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2584 h = NULL;
2585 sym = NULL;
2586 sec = NULL;
2587 unresolved_reloc = FALSE;
2588 if (r_symndx < symtab_hdr->sh_info)
2589 {
2590 sym = local_syms + r_symndx;
2591 sec = local_sections[r_symndx];
2592 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2593 }
2594 else
2595 {
2596 bfd_boolean warned;
2597
2598 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2599 r_symndx, symtab_hdr, sym_hashes,
2600 h, sec, relocation,
2601 unresolved_reloc, warned);
2602 if (warned)
2603 {
2604 /* To avoid generating warning messages about truncated
2605 relocations, set the relocation's address to be the same as
2606 the start of this section. */
2607 if (input_section->output_section != NULL)
2608 relocation = input_section->output_section->vma;
2609 else
2610 relocation = 0;
2611 }
2612 }
2613
2614 if (sec != NULL && elf_discarded_section (sec))
2615 {
2616 /* For relocs against symbols from removed linkonce
2617 sections, or sections discarded by a linker script, we
2618 just want the section contents zeroed. Avoid any
2619 special processing. */
2620 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2621 rel->r_info = 0;
2622 rel->r_addend = 0;
2623 continue;
2624 }
2625
2626 if (info->relocatable)
2627 continue;
2628
2629 switch (r_type)
2630 {
2631 case R_SPARC_GOTDATA_HIX22:
2632 case R_SPARC_GOTDATA_LOX10:
2633 case R_SPARC_GOTDATA_OP_HIX22:
2634 case R_SPARC_GOTDATA_OP_LOX10:
2635 /* We don't support these code transformation optimizations
2636 yet, so just leave the sequence alone and treat as
2637 GOT22/GOT10. */
2638 if (r_type == R_SPARC_GOTDATA_HIX22
2639 || r_type == R_SPARC_GOTDATA_OP_HIX22)
2640 r_type = R_SPARC_GOT22;
2641 else
2642 r_type = R_SPARC_GOT10;
2643 /* Fall through. */
2644
2645 case R_SPARC_GOT10:
2646 case R_SPARC_GOT13:
2647 case R_SPARC_GOT22:
2648 /* Relocation is to the entry for this symbol in the global
2649 offset table. */
2650 if (htab->sgot == NULL)
2651 abort ();
2652
2653 if (h != NULL)
2654 {
2655 bfd_boolean dyn;
2656
2657 off = h->got.offset;
2658 BFD_ASSERT (off != (bfd_vma) -1);
2659 dyn = elf_hash_table (info)->dynamic_sections_created;
2660
2661 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2662 || (info->shared
2663 && (info->symbolic
2664 || h->dynindx == -1
2665 || h->forced_local)
2666 && h->def_regular))
2667 {
2668 /* This is actually a static link, or it is a
2669 -Bsymbolic link and the symbol is defined
2670 locally, or the symbol was forced to be local
2671 because of a version file. We must initialize
2672 this entry in the global offset table. Since the
2673 offset must always be a multiple of 8 for 64-bit
2674 and 4 for 32-bit, we use the least significant bit
2675 to record whether we have initialized it already.
2676
2677 When doing a dynamic link, we create a .rela.got
2678 relocation entry to initialize the value. This
2679 is done in the finish_dynamic_symbol routine. */
2680 if ((off & 1) != 0)
2681 off &= ~1;
2682 else
2683 {
2684 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
2685 htab->sgot->contents + off);
2686 h->got.offset |= 1;
2687 }
2688 }
2689 else
2690 unresolved_reloc = FALSE;
2691 }
2692 else
2693 {
2694 BFD_ASSERT (local_got_offsets != NULL
2695 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2696
2697 off = local_got_offsets[r_symndx];
2698
2699 /* The offset must always be a multiple of 8 on 64-bit and
2700 4 on 32-bit. We use the least significant bit to record
2701 whether we have already processed this entry. */
2702 if ((off & 1) != 0)
2703 off &= ~1;
2704 else
2705 {
2706
2707 if (info->shared)
2708 {
2709 asection *s;
2710 Elf_Internal_Rela outrel;
2711
2712 /* We need to generate a R_SPARC_RELATIVE reloc
2713 for the dynamic linker. */
2714 s = htab->srelgot;
2715 BFD_ASSERT (s != NULL);
2716
2717 outrel.r_offset = (htab->sgot->output_section->vma
2718 + htab->sgot->output_offset
2719 + off);
2720 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
2721 0, R_SPARC_RELATIVE);
2722 outrel.r_addend = relocation;
2723 relocation = 0;
2724 sparc_elf_append_rela (output_bfd, s, &outrel);
2725 }
2726
2727 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
2728 htab->sgot->contents + off);
2729 local_got_offsets[r_symndx] |= 1;
2730 }
2731 }
2732 relocation = htab->sgot->output_offset + off - got_base;
2733 break;
2734
2735 case R_SPARC_PLT32:
2736 case R_SPARC_PLT64:
2737 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2738 {
2739 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
2740 goto r_sparc_plt32;
2741 }
2742 /* Fall through. */
2743
2744 case R_SPARC_WPLT30:
2745 case R_SPARC_HIPLT22:
2746 case R_SPARC_LOPLT10:
2747 case R_SPARC_PCPLT32:
2748 case R_SPARC_PCPLT22:
2749 case R_SPARC_PCPLT10:
2750 r_sparc_wplt30:
2751 /* Relocation is to the entry for this symbol in the
2752 procedure linkage table. */
2753
2754 if (! ABI_64_P (output_bfd))
2755 {
2756 /* The Solaris native assembler will generate a WPLT30 reloc
2757 for a local symbol if you assemble a call from one
2758 section to another when using -K pic. We treat it as
2759 WDISP30. */
2760 if (h == NULL)
2761 break;
2762 }
2763 else
2764 {
2765 BFD_ASSERT (h != NULL);
2766 }
2767
2768 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
2769 {
2770 /* We didn't make a PLT entry for this symbol. This
2771 happens when statically linking PIC code, or when
2772 using -Bsymbolic. */
2773 break;
2774 }
2775
2776 relocation = (htab->splt->output_section->vma
2777 + htab->splt->output_offset
2778 + h->plt.offset);
2779 unresolved_reloc = FALSE;
2780 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
2781 {
2782 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
2783 is_plt = TRUE;
2784 goto r_sparc_plt32;
2785 }
2786 break;
2787
2788 case R_SPARC_PC10:
2789 case R_SPARC_PC22:
2790 case R_SPARC_PC_HH22:
2791 case R_SPARC_PC_HM10:
2792 case R_SPARC_PC_LM22:
2793 if (h != NULL
2794 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2795 break;
2796 /* Fall through. */
2797 case R_SPARC_DISP8:
2798 case R_SPARC_DISP16:
2799 case R_SPARC_DISP32:
2800 case R_SPARC_DISP64:
2801 case R_SPARC_WDISP30:
2802 case R_SPARC_WDISP22:
2803 case R_SPARC_WDISP19:
2804 case R_SPARC_WDISP16:
2805 case R_SPARC_8:
2806 case R_SPARC_16:
2807 case R_SPARC_32:
2808 case R_SPARC_HI22:
2809 case R_SPARC_22:
2810 case R_SPARC_13:
2811 case R_SPARC_LO10:
2812 case R_SPARC_UA16:
2813 case R_SPARC_UA32:
2814 case R_SPARC_10:
2815 case R_SPARC_11:
2816 case R_SPARC_64:
2817 case R_SPARC_OLO10:
2818 case R_SPARC_HH22:
2819 case R_SPARC_HM10:
2820 case R_SPARC_LM22:
2821 case R_SPARC_7:
2822 case R_SPARC_5:
2823 case R_SPARC_6:
2824 case R_SPARC_HIX22:
2825 case R_SPARC_LOX10:
2826 case R_SPARC_H44:
2827 case R_SPARC_M44:
2828 case R_SPARC_L44:
2829 case R_SPARC_UA64:
2830 r_sparc_plt32:
2831 if ((input_section->flags & SEC_ALLOC) == 0
2832 || is_vxworks_tls)
2833 break;
2834
2835 if ((info->shared
2836 && (h == NULL
2837 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2838 || h->root.type != bfd_link_hash_undefweak)
2839 && (! howto->pc_relative
2840 || (h != NULL
2841 && h->dynindx != -1
2842 && (! info->symbolic
2843 || !h->def_regular))))
2844 || (!info->shared
2845 && h != NULL
2846 && h->dynindx != -1
2847 && !h->non_got_ref
2848 && ((h->def_dynamic
2849 && !h->def_regular)
2850 || h->root.type == bfd_link_hash_undefweak
2851 || h->root.type == bfd_link_hash_undefined)))
2852 {
2853 Elf_Internal_Rela outrel;
2854 bfd_boolean skip, relocate = FALSE;
2855
2856 /* When generating a shared object, these relocations
2857 are copied into the output file to be resolved at run
2858 time. */
2859
2860 BFD_ASSERT (sreloc != NULL);
2861
2862 skip = FALSE;
2863
2864 outrel.r_offset =
2865 _bfd_elf_section_offset (output_bfd, info, input_section,
2866 rel->r_offset);
2867 if (outrel.r_offset == (bfd_vma) -1)
2868 skip = TRUE;
2869 else if (outrel.r_offset == (bfd_vma) -2)
2870 skip = TRUE, relocate = TRUE;
2871 outrel.r_offset += (input_section->output_section->vma
2872 + input_section->output_offset);
2873
2874 /* Optimize unaligned reloc usage now that we know where
2875 it finally resides. */
2876 switch (r_type)
2877 {
2878 case R_SPARC_16:
2879 if (outrel.r_offset & 1)
2880 r_type = R_SPARC_UA16;
2881 break;
2882 case R_SPARC_UA16:
2883 if (!(outrel.r_offset & 1))
2884 r_type = R_SPARC_16;
2885 break;
2886 case R_SPARC_32:
2887 if (outrel.r_offset & 3)
2888 r_type = R_SPARC_UA32;
2889 break;
2890 case R_SPARC_UA32:
2891 if (!(outrel.r_offset & 3))
2892 r_type = R_SPARC_32;
2893 break;
2894 case R_SPARC_64:
2895 if (outrel.r_offset & 7)
2896 r_type = R_SPARC_UA64;
2897 break;
2898 case R_SPARC_UA64:
2899 if (!(outrel.r_offset & 7))
2900 r_type = R_SPARC_64;
2901 break;
2902 case R_SPARC_DISP8:
2903 case R_SPARC_DISP16:
2904 case R_SPARC_DISP32:
2905 case R_SPARC_DISP64:
2906 /* If the symbol is not dynamic, we should not keep
2907 a dynamic relocation. But an .rela.* slot has been
2908 allocated for it, output R_SPARC_NONE.
2909 FIXME: Add code tracking needed dynamic relocs as
2910 e.g. i386 has. */
2911 if (h->dynindx == -1)
2912 skip = TRUE, relocate = TRUE;
2913 break;
2914 }
2915
2916 if (skip)
2917 memset (&outrel, 0, sizeof outrel);
2918 /* h->dynindx may be -1 if the symbol was marked to
2919 become local. */
2920 else if (h != NULL && ! is_plt
2921 && ((! info->symbolic && h->dynindx != -1)
2922 || !h->def_regular))
2923 {
2924 BFD_ASSERT (h->dynindx != -1);
2925 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
2926 outrel.r_addend = rel->r_addend;
2927 }
2928 else
2929 {
2930 if (r_type == R_SPARC_32 || r_type == R_SPARC_64)
2931 {
2932 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
2933 0, R_SPARC_RELATIVE);
2934 outrel.r_addend = relocation + rel->r_addend;
2935 }
2936 else
2937 {
2938 long indx;
2939
2940 outrel.r_addend = relocation + rel->r_addend;
2941
2942 if (is_plt)
2943 sec = htab->splt;
2944
2945 if (bfd_is_abs_section (sec))
2946 indx = 0;
2947 else if (sec == NULL || sec->owner == NULL)
2948 {
2949 bfd_set_error (bfd_error_bad_value);
2950 return FALSE;
2951 }
2952 else
2953 {
2954 asection *osec;
2955
2956 /* We are turning this relocation into one
2957 against a section symbol. It would be
2958 proper to subtract the symbol's value,
2959 osec->vma, from the emitted reloc addend,
2960 but ld.so expects buggy relocs. */
2961 osec = sec->output_section;
2962 indx = elf_section_data (osec)->dynindx;
2963
2964 if (indx == 0)
2965 {
2966 osec = htab->elf.text_index_section;
2967 indx = elf_section_data (osec)->dynindx;
2968 }
2969
2970 /* FIXME: we really should be able to link non-pic
2971 shared libraries. */
2972 if (indx == 0)
2973 {
2974 BFD_FAIL ();
2975 (*_bfd_error_handler)
2976 (_("%B: probably compiled without -fPIC?"),
2977 input_bfd);
2978 bfd_set_error (bfd_error_bad_value);
2979 return FALSE;
2980 }
2981 }
2982
2983 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
2984 r_type);
2985 }
2986 }
2987
2988 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
2989
2990 /* This reloc will be computed at runtime, so there's no
2991 need to do anything now. */
2992 if (! relocate)
2993 continue;
2994 }
2995 break;
2996
2997 case R_SPARC_TLS_GD_HI22:
2998 if (! ABI_64_P (input_bfd)
2999 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3000 {
3001 /* R_SPARC_REV32 used the same reloc number as
3002 R_SPARC_TLS_GD_HI22. */
3003 r_type = R_SPARC_REV32;
3004 break;
3005 }
3006 /* Fall through */
3007
3008 case R_SPARC_TLS_GD_LO10:
3009 case R_SPARC_TLS_IE_HI22:
3010 case R_SPARC_TLS_IE_LO10:
3011 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3012 tls_type = GOT_UNKNOWN;
3013 if (h == NULL && local_got_offsets)
3014 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3015 else if (h != NULL)
3016 {
3017 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3018 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3019 switch (SPARC_ELF_R_TYPE (rel->r_info))
3020 {
3021 case R_SPARC_TLS_GD_HI22:
3022 case R_SPARC_TLS_IE_HI22:
3023 r_type = R_SPARC_TLS_LE_HIX22;
3024 break;
3025 default:
3026 r_type = R_SPARC_TLS_LE_LOX10;
3027 break;
3028 }
3029 }
3030 if (tls_type == GOT_TLS_IE)
3031 switch (r_type)
3032 {
3033 case R_SPARC_TLS_GD_HI22:
3034 r_type = R_SPARC_TLS_IE_HI22;
3035 break;
3036 case R_SPARC_TLS_GD_LO10:
3037 r_type = R_SPARC_TLS_IE_LO10;
3038 break;
3039 }
3040
3041 if (r_type == R_SPARC_TLS_LE_HIX22)
3042 {
3043 relocation = tpoff (info, relocation);
3044 break;
3045 }
3046 if (r_type == R_SPARC_TLS_LE_LOX10)
3047 {
3048 /* Change add into xor. */
3049 relocation = tpoff (info, relocation);
3050 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3051 contents + rel->r_offset)
3052 | 0x80182000), contents + rel->r_offset);
3053 break;
3054 }
3055
3056 if (h != NULL)
3057 {
3058 off = h->got.offset;
3059 h->got.offset |= 1;
3060 }
3061 else
3062 {
3063 BFD_ASSERT (local_got_offsets != NULL);
3064 off = local_got_offsets[r_symndx];
3065 local_got_offsets[r_symndx] |= 1;
3066 }
3067
3068 r_sparc_tlsldm:
3069 if (htab->sgot == NULL)
3070 abort ();
3071
3072 if ((off & 1) != 0)
3073 off &= ~1;
3074 else
3075 {
3076 Elf_Internal_Rela outrel;
3077 int dr_type, indx;
3078
3079 if (htab->srelgot == NULL)
3080 abort ();
3081
3082 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, htab->sgot->contents + off);
3083 outrel.r_offset = (htab->sgot->output_section->vma
3084 + htab->sgot->output_offset + off);
3085 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3086 if (r_type == R_SPARC_TLS_IE_HI22
3087 || r_type == R_SPARC_TLS_IE_LO10)
3088 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3089 else
3090 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3091 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3092 outrel.r_addend = relocation - dtpoff_base (info);
3093 else
3094 outrel.r_addend = 0;
3095 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3096 sparc_elf_append_rela (output_bfd, htab->srelgot, &outrel);
3097
3098 if (r_type == R_SPARC_TLS_GD_HI22
3099 || r_type == R_SPARC_TLS_GD_LO10)
3100 {
3101 if (indx == 0)
3102 {
3103 BFD_ASSERT (! unresolved_reloc);
3104 SPARC_ELF_PUT_WORD (htab, output_bfd,
3105 relocation - dtpoff_base (info),
3106 (htab->sgot->contents + off
3107 + SPARC_ELF_WORD_BYTES (htab)));
3108 }
3109 else
3110 {
3111 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3112 (htab->sgot->contents + off
3113 + SPARC_ELF_WORD_BYTES (htab)));
3114 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3115 SPARC_ELF_DTPOFF_RELOC (htab));
3116 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3117 sparc_elf_append_rela (output_bfd, htab->srelgot,
3118 &outrel);
3119 }
3120 }
3121 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3122 {
3123 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3124 (htab->sgot->contents + off
3125 + SPARC_ELF_WORD_BYTES (htab)));
3126 }
3127 }
3128
3129 if (off >= (bfd_vma) -2)
3130 abort ();
3131
3132 relocation = htab->sgot->output_offset + off - got_base;
3133 unresolved_reloc = FALSE;
3134 howto = _bfd_sparc_elf_howto_table + r_type;
3135 break;
3136
3137 case R_SPARC_TLS_LDM_HI22:
3138 case R_SPARC_TLS_LDM_LO10:
3139 if (! info->shared)
3140 {
3141 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3142 continue;
3143 }
3144 off = htab->tls_ldm_got.offset;
3145 htab->tls_ldm_got.offset |= 1;
3146 goto r_sparc_tlsldm;
3147
3148 case R_SPARC_TLS_LDO_HIX22:
3149 case R_SPARC_TLS_LDO_LOX10:
3150 if (info->shared)
3151 {
3152 relocation -= dtpoff_base (info);
3153 break;
3154 }
3155
3156 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3157 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3158 /* Fall through. */
3159
3160 case R_SPARC_TLS_LE_HIX22:
3161 case R_SPARC_TLS_LE_LOX10:
3162 if (info->shared)
3163 {
3164 Elf_Internal_Rela outrel;
3165 bfd_boolean skip, relocate = FALSE;
3166
3167 BFD_ASSERT (sreloc != NULL);
3168 skip = FALSE;
3169 outrel.r_offset =
3170 _bfd_elf_section_offset (output_bfd, info, input_section,
3171 rel->r_offset);
3172 if (outrel.r_offset == (bfd_vma) -1)
3173 skip = TRUE;
3174 else if (outrel.r_offset == (bfd_vma) -2)
3175 skip = TRUE, relocate = TRUE;
3176 outrel.r_offset += (input_section->output_section->vma
3177 + input_section->output_offset);
3178 if (skip)
3179 memset (&outrel, 0, sizeof outrel);
3180 else
3181 {
3182 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3183 outrel.r_addend = relocation - dtpoff_base (info)
3184 + rel->r_addend;
3185 }
3186
3187 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3188 continue;
3189 }
3190 relocation = tpoff (info, relocation);
3191 break;
3192
3193 case R_SPARC_TLS_LDM_CALL:
3194 if (! info->shared)
3195 {
3196 /* mov %g0, %o0 */
3197 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3198 continue;
3199 }
3200 /* Fall through */
3201
3202 case R_SPARC_TLS_GD_CALL:
3203 tls_type = GOT_UNKNOWN;
3204 if (h == NULL && local_got_offsets)
3205 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3206 else if (h != NULL)
3207 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3208 if (! info->shared
3209 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3210 {
3211 bfd_vma insn;
3212
3213 if (!info->shared && (h == NULL || h->dynindx == -1))
3214 {
3215 /* GD -> LE */
3216 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3217 continue;
3218 }
3219
3220 /* GD -> IE */
3221 if (rel + 1 < relend
3222 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3223 && rel[1].r_offset == rel->r_offset + 4
3224 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3225 && (((insn = bfd_get_32 (input_bfd,
3226 contents + rel[1].r_offset))
3227 >> 25) & 0x1f) == 8)
3228 {
3229 /* We have
3230 call __tls_get_addr, %tgd_call(foo)
3231 add %reg1, %reg2, %o0, %tgd_add(foo)
3232 and change it into IE:
3233 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3234 add %g7, %o0, %o0, %tie_add(foo).
3235 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3236 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3237 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3238 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3239 contents + rel->r_offset);
3240 bfd_put_32 (output_bfd, 0x9001c008,
3241 contents + rel->r_offset + 4);
3242 rel++;
3243 continue;
3244 }
3245
3246 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
3247 continue;
3248 }
3249
3250 h = (struct elf_link_hash_entry *)
3251 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3252 FALSE, TRUE);
3253 BFD_ASSERT (h != NULL);
3254 r_type = R_SPARC_WPLT30;
3255 howto = _bfd_sparc_elf_howto_table + r_type;
3256 goto r_sparc_wplt30;
3257
3258 case R_SPARC_TLS_GD_ADD:
3259 tls_type = GOT_UNKNOWN;
3260 if (h == NULL && local_got_offsets)
3261 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3262 else if (h != NULL)
3263 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3264 if (! info->shared || tls_type == GOT_TLS_IE)
3265 {
3266 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3267 changed into IE:
3268 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3269 or LE:
3270 add %g7, %reg2, %reg3. */
3271 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3272 if ((h != NULL && h->dynindx != -1) || info->shared)
3273 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3274 else
3275 relocation = (insn & ~0x7c000) | 0x1c000;
3276 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3277 }
3278 continue;
3279
3280 case R_SPARC_TLS_LDM_ADD:
3281 if (! info->shared)
3282 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3283 continue;
3284
3285 case R_SPARC_TLS_LDO_ADD:
3286 if (! info->shared)
3287 {
3288 /* Change rs1 into %g7. */
3289 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3290 insn = (insn & ~0x7c000) | 0x1c000;
3291 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3292 }
3293 continue;
3294
3295 case R_SPARC_GOTDATA_OP:
3296 /* We don't support gotdata code transformation optimizations
3297 yet, so simply leave the sequence as-is. */
3298 continue;
3299
3300 case R_SPARC_TLS_IE_LD:
3301 case R_SPARC_TLS_IE_LDX:
3302 if (! info->shared && (h == NULL || h->dynindx == -1))
3303 {
3304 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3305 int rs2 = insn & 0x1f;
3306 int rd = (insn >> 25) & 0x1f;
3307
3308 if (rs2 == rd)
3309 relocation = SPARC_NOP;
3310 else
3311 relocation = 0x80100000 | (insn & 0x3e00001f);
3312 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3313 }
3314 continue;
3315
3316 case R_SPARC_TLS_IE_ADD:
3317 /* Totally useless relocation. */
3318 continue;
3319
3320 case R_SPARC_TLS_DTPOFF32:
3321 case R_SPARC_TLS_DTPOFF64:
3322 relocation -= dtpoff_base (info);
3323 break;
3324
3325 default:
3326 break;
3327 }
3328
3329 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3330 because such sections are not SEC_ALLOC and thus ld.so will
3331 not process them. */
3332 if (unresolved_reloc
3333 && !((input_section->flags & SEC_DEBUGGING) != 0
3334 && h->def_dynamic))
3335 (*_bfd_error_handler)
3336 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3337 input_bfd,
3338 input_section,
3339 (long) rel->r_offset,
3340 howto->name,
3341 h->root.root.string);
3342
3343 r = bfd_reloc_continue;
3344 if (r_type == R_SPARC_OLO10)
3345 {
3346 bfd_vma x;
3347
3348 if (! ABI_64_P (output_bfd))
3349 abort ();
3350
3351 relocation += rel->r_addend;
3352 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3353
3354 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3355 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3356 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3357
3358 r = bfd_check_overflow (howto->complain_on_overflow,
3359 howto->bitsize, howto->rightshift,
3360 bfd_arch_bits_per_address (input_bfd),
3361 relocation);
3362 }
3363 else if (r_type == R_SPARC_WDISP16)
3364 {
3365 bfd_vma x;
3366
3367 relocation += rel->r_addend;
3368 relocation -= (input_section->output_section->vma
3369 + input_section->output_offset);
3370 relocation -= rel->r_offset;
3371
3372 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3373 x |= ((((relocation >> 2) & 0xc000) << 6)
3374 | ((relocation >> 2) & 0x3fff));
3375 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3376
3377 r = bfd_check_overflow (howto->complain_on_overflow,
3378 howto->bitsize, howto->rightshift,
3379 bfd_arch_bits_per_address (input_bfd),
3380 relocation);
3381 }
3382 else if (r_type == R_SPARC_REV32)
3383 {
3384 bfd_vma x;
3385
3386 relocation = relocation + rel->r_addend;
3387
3388 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3389 x = x + relocation;
3390 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3391 r = bfd_reloc_ok;
3392 }
3393 else if (r_type == R_SPARC_TLS_LDO_HIX22
3394 || r_type == R_SPARC_TLS_LE_HIX22)
3395 {
3396 bfd_vma x;
3397
3398 relocation += rel->r_addend;
3399 if (r_type == R_SPARC_TLS_LE_HIX22)
3400 relocation ^= MINUS_ONE;
3401
3402 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3403 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3404 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3405 r = bfd_reloc_ok;
3406 }
3407 else if (r_type == R_SPARC_TLS_LDO_LOX10
3408 || r_type == R_SPARC_TLS_LE_LOX10)
3409 {
3410 bfd_vma x;
3411
3412 relocation += rel->r_addend;
3413 relocation &= 0x3ff;
3414 if (r_type == R_SPARC_TLS_LE_LOX10)
3415 relocation |= 0x1c00;
3416
3417 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3418 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3419 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3420
3421 r = bfd_reloc_ok;
3422 }
3423 else if (r_type == R_SPARC_HIX22)
3424 {
3425 bfd_vma x;
3426
3427 relocation += rel->r_addend;
3428 relocation = relocation ^ MINUS_ONE;
3429
3430 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3431 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3432 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3433
3434 r = bfd_check_overflow (howto->complain_on_overflow,
3435 howto->bitsize, howto->rightshift,
3436 bfd_arch_bits_per_address (input_bfd),
3437 relocation);
3438 }
3439 else if (r_type == R_SPARC_LOX10)
3440 {
3441 bfd_vma x;
3442
3443 relocation += rel->r_addend;
3444 relocation = (relocation & 0x3ff) | 0x1c00;
3445
3446 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3447 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3448 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3449
3450 r = bfd_reloc_ok;
3451 }
3452 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
3453 && sec_do_relax (input_section)
3454 && rel->r_offset + 4 < input_section->size)
3455 {
3456 #define G0 0
3457 #define O7 15
3458 #define XCC (2 << 20)
3459 #define COND(x) (((x)&0xf)<<25)
3460 #define CONDA COND(0x8)
3461 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
3462 #define INSN_BA (F2(0,2) | CONDA)
3463 #define INSN_OR F3(2, 0x2, 0)
3464 #define INSN_NOP F2(0,4)
3465
3466 bfd_vma x, y;
3467
3468 /* If the instruction is a call with either:
3469 restore
3470 arithmetic instruction with rd == %o7
3471 where rs1 != %o7 and rs2 if it is register != %o7
3472 then we can optimize if the call destination is near
3473 by changing the call into a branch always. */
3474 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3475 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3476 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
3477 {
3478 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
3479 || ((y & OP3(0x28)) == 0 /* arithmetic */
3480 && (y & RD(~0)) == RD(O7)))
3481 && (y & RS1(~0)) != RS1(O7)
3482 && ((y & F3I(~0))
3483 || (y & RS2(~0)) != RS2(O7)))
3484 {
3485 bfd_vma reloc;
3486
3487 reloc = relocation + rel->r_addend - rel->r_offset;
3488 reloc -= (input_section->output_section->vma
3489 + input_section->output_offset);
3490
3491 /* Ensure the branch fits into simm22. */
3492 if ((reloc & 3) == 0
3493 && ((reloc & ~(bfd_vma)0x7fffff) == 0
3494 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
3495 {
3496 reloc >>= 2;
3497
3498 /* Check whether it fits into simm19. */
3499 if (((reloc & 0x3c0000) == 0
3500 || (reloc & 0x3c0000) == 0x3c0000)
3501 && (ABI_64_P (output_bfd)
3502 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
3503 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
3504 else
3505 x = INSN_BA | (reloc & 0x3fffff); /* ba */
3506 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3507 r = bfd_reloc_ok;
3508 if (rel->r_offset >= 4
3509 && (y & (0xffffffff ^ RS1(~0)))
3510 == (INSN_OR | RD(O7) | RS2(G0)))
3511 {
3512 bfd_vma z;
3513 unsigned int reg;
3514
3515 z = bfd_get_32 (input_bfd,
3516 contents + rel->r_offset - 4);
3517 if ((z & (0xffffffff ^ RD(~0)))
3518 != (INSN_OR | RS1(O7) | RS2(G0)))
3519 break;
3520
3521 /* The sequence was
3522 or %o7, %g0, %rN
3523 call foo
3524 or %rN, %g0, %o7
3525
3526 If call foo was replaced with ba, replace
3527 or %rN, %g0, %o7 with nop. */
3528
3529 reg = (y & RS1(~0)) >> 14;
3530 if (reg != ((z & RD(~0)) >> 25)
3531 || reg == G0 || reg == O7)
3532 break;
3533
3534 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
3535 contents + rel->r_offset + 4);
3536 }
3537
3538 }
3539 }
3540 }
3541 }
3542
3543 if (r == bfd_reloc_continue)
3544 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3545 contents, rel->r_offset,
3546 relocation, rel->r_addend);
3547
3548 if (r != bfd_reloc_ok)
3549 {
3550 switch (r)
3551 {
3552 default:
3553 case bfd_reloc_outofrange:
3554 abort ();
3555 case bfd_reloc_overflow:
3556 {
3557 const char *name;
3558
3559 /* The Solaris native linker silently disregards overflows.
3560 We don't, but this breaks stabs debugging info, whose
3561 relocations are only 32-bits wide. Ignore overflows in
3562 this case and also for discarded entries. */
3563 if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32)
3564 && (((input_section->flags & SEC_DEBUGGING) != 0
3565 && strcmp (bfd_section_name (input_bfd,
3566 input_section),
3567 ".stab") == 0)
3568 || _bfd_elf_section_offset (output_bfd, info,
3569 input_section,
3570 rel->r_offset)
3571 == (bfd_vma)-1))
3572 break;
3573
3574 if (h != NULL)
3575 {
3576 /* Assume this is a call protected by other code that
3577 detect the symbol is undefined. If this is the case,
3578 we can safely ignore the overflow. If not, the
3579 program is hosed anyway, and a little warning isn't
3580 going to help. */
3581 if (h->root.type == bfd_link_hash_undefweak
3582 && howto->pc_relative)
3583 break;
3584
3585 name = NULL;
3586 }
3587 else
3588 {
3589 name = bfd_elf_string_from_elf_section (input_bfd,
3590 symtab_hdr->sh_link,
3591 sym->st_name);
3592 if (name == NULL)
3593 return FALSE;
3594 if (*name == '\0')
3595 name = bfd_section_name (input_bfd, sec);
3596 }
3597 if (! ((*info->callbacks->reloc_overflow)
3598 (info, (h ? &h->root : NULL), name, howto->name,
3599 (bfd_vma) 0, input_bfd, input_section,
3600 rel->r_offset)))
3601 return FALSE;
3602 }
3603 break;
3604 }
3605 }
3606 }
3607
3608 return TRUE;
3609 }
3610
3611 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
3612 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
3613 is the offset of the associated .got.plt entry from
3614 _GLOBAL_OFFSET_TABLE_. */
3615
3616 static void
3617 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
3618 bfd_vma plt_offset, bfd_vma plt_index,
3619 bfd_vma got_offset)
3620 {
3621 bfd_vma got_base;
3622 const bfd_vma *plt_entry;
3623 struct _bfd_sparc_elf_link_hash_table *htab;
3624 bfd_byte *loc;
3625 Elf_Internal_Rela rela;
3626
3627 htab = _bfd_sparc_elf_hash_table (info);
3628 if (info->shared)
3629 {
3630 plt_entry = sparc_vxworks_shared_plt_entry;
3631 got_base = 0;
3632 }
3633 else
3634 {
3635 plt_entry = sparc_vxworks_exec_plt_entry;
3636 got_base = (htab->elf.hgot->root.u.def.value
3637 + htab->elf.hgot->root.u.def.section->output_offset
3638 + htab->elf.hgot->root.u.def.section->output_section->vma);
3639 }
3640
3641 /* Fill in the entry in the procedure linkage table. */
3642 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
3643 htab->splt->contents + plt_offset);
3644 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
3645 htab->splt->contents + plt_offset + 4);
3646 bfd_put_32 (output_bfd, plt_entry[2],
3647 htab->splt->contents + plt_offset + 8);
3648 bfd_put_32 (output_bfd, plt_entry[3],
3649 htab->splt->contents + plt_offset + 12);
3650 bfd_put_32 (output_bfd, plt_entry[4],
3651 htab->splt->contents + plt_offset + 16);
3652 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
3653 htab->splt->contents + plt_offset + 20);
3654 /* PC-relative displacement for a branch to the start of
3655 the PLT section. */
3656 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
3657 & 0x003fffff),
3658 htab->splt->contents + plt_offset + 24);
3659 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
3660 htab->splt->contents + plt_offset + 28);
3661
3662 /* Fill in the .got.plt entry, pointing initially at the
3663 second half of the PLT entry. */
3664 BFD_ASSERT (htab->sgotplt != NULL);
3665 bfd_put_32 (output_bfd,
3666 htab->splt->output_section->vma
3667 + htab->splt->output_offset
3668 + plt_offset + 20,
3669 htab->sgotplt->contents + got_offset);
3670
3671 /* Add relocations to .rela.plt.unloaded. */
3672 if (!info->shared)
3673 {
3674 loc = (htab->srelplt2->contents
3675 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
3676
3677 /* Relocate the initial sethi. */
3678 rela.r_offset = (htab->splt->output_section->vma
3679 + htab->splt->output_offset
3680 + plt_offset);
3681 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
3682 rela.r_addend = got_offset;
3683 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3684 loc += sizeof (Elf32_External_Rela);
3685
3686 /* Likewise the following or. */
3687 rela.r_offset += 4;
3688 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
3689 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3690 loc += sizeof (Elf32_External_Rela);
3691
3692 /* Relocate the .got.plt entry. */
3693 rela.r_offset = (htab->sgotplt->output_section->vma
3694 + htab->sgotplt->output_offset
3695 + got_offset);
3696 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
3697 rela.r_addend = plt_offset + 20;
3698 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3699 }
3700 }
3701
3702 /* Finish up dynamic symbol handling. We set the contents of various
3703 dynamic sections here. */
3704
3705 bfd_boolean
3706 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
3707 struct bfd_link_info *info,
3708 struct elf_link_hash_entry *h,
3709 Elf_Internal_Sym *sym)
3710 {
3711 bfd *dynobj;
3712 struct _bfd_sparc_elf_link_hash_table *htab;
3713 const struct elf_backend_data *bed;
3714
3715 htab = _bfd_sparc_elf_hash_table (info);
3716 dynobj = htab->elf.dynobj;
3717 bed = get_elf_backend_data (output_bfd);
3718
3719 if (h->plt.offset != (bfd_vma) -1)
3720 {
3721 asection *splt;
3722 asection *srela;
3723 Elf_Internal_Rela rela;
3724 bfd_byte *loc;
3725 bfd_vma r_offset, got_offset;
3726 int rela_index;
3727
3728 /* This symbol has an entry in the PLT. Set it up. */
3729
3730 BFD_ASSERT (h->dynindx != -1);
3731
3732 splt = htab->splt;
3733 srela = htab->srelplt;
3734 BFD_ASSERT (splt != NULL && srela != NULL);
3735
3736 /* Fill in the entry in the .rela.plt section. */
3737 if (htab->is_vxworks)
3738 {
3739 /* Work out the index of this PLT entry. */
3740 rela_index = ((h->plt.offset - htab->plt_header_size)
3741 / htab->plt_entry_size);
3742
3743 /* Calculate the offset of the associated .got.plt entry.
3744 The first three entries are reserved. */
3745 got_offset = (rela_index + 3) * 4;
3746
3747 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
3748 rela_index, got_offset);
3749
3750
3751 /* On VxWorks, the relocation points to the .got.plt entry,
3752 not the .plt entry. */
3753 rela.r_offset = (htab->sgotplt->output_section->vma
3754 + htab->sgotplt->output_offset
3755 + got_offset);
3756 rela.r_addend = 0;
3757 }
3758 else
3759 {
3760 /* Fill in the entry in the procedure linkage table. */
3761 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
3762 h->plt.offset, splt->size,
3763 &r_offset);
3764
3765 rela.r_offset = r_offset
3766 + (splt->output_section->vma + splt->output_offset);
3767 if (! ABI_64_P (output_bfd)
3768 || h->plt.offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
3769 {
3770 rela.r_addend = 0;
3771 }
3772 else
3773 {
3774 rela.r_addend = (-(h->plt.offset + 4)
3775 - splt->output_section->vma
3776 - splt->output_offset);
3777 }
3778 }
3779 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_JMP_SLOT);
3780
3781 /* Adjust for the first 4 reserved elements in the .plt section
3782 when setting the offset in the .rela.plt section.
3783 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
3784 thus .plt[4] has corresponding .rela.plt[0] and so on. */
3785
3786 loc = srela->contents;
3787 loc += rela_index * bed->s->sizeof_rela;
3788 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3789
3790 if (!h->def_regular)
3791 {
3792 /* Mark the symbol as undefined, rather than as defined in
3793 the .plt section. Leave the value alone. */
3794 sym->st_shndx = SHN_UNDEF;
3795 /* If the symbol is weak, we do need to clear the value.
3796 Otherwise, the PLT entry would provide a definition for
3797 the symbol even if the symbol wasn't defined anywhere,
3798 and so the symbol would never be NULL. */
3799 if (!h->ref_regular_nonweak)
3800 sym->st_value = 0;
3801 }
3802 }
3803
3804 if (h->got.offset != (bfd_vma) -1
3805 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3806 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3807 {
3808 asection *sgot;
3809 asection *srela;
3810 Elf_Internal_Rela rela;
3811
3812 /* This symbol has an entry in the GOT. Set it up. */
3813
3814 sgot = htab->sgot;
3815 srela = htab->srelgot;
3816 BFD_ASSERT (sgot != NULL && srela != NULL);
3817
3818 rela.r_offset = (sgot->output_section->vma
3819 + sgot->output_offset
3820 + (h->got.offset &~ (bfd_vma) 1));
3821
3822 /* If this is a -Bsymbolic link, and the symbol is defined
3823 locally, we just want to emit a RELATIVE reloc. Likewise if
3824 the symbol was forced to be local because of a version file.
3825 The entry in the global offset table will already have been
3826 initialized in the relocate_section function. */
3827 if (info->shared
3828 && (info->symbolic || h->dynindx == -1)
3829 && h->def_regular)
3830 {
3831 asection *sec = h->root.u.def.section;
3832 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
3833 rela.r_addend = (h->root.u.def.value
3834 + sec->output_section->vma
3835 + sec->output_offset);
3836 }
3837 else
3838 {
3839 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
3840 rela.r_addend = 0;
3841 }
3842
3843 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3844 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3845 sparc_elf_append_rela (output_bfd, srela, &rela);
3846 }
3847
3848 if (h->needs_copy)
3849 {
3850 asection *s;
3851 Elf_Internal_Rela rela;
3852
3853 /* This symbols needs a copy reloc. Set it up. */
3854 BFD_ASSERT (h->dynindx != -1);
3855
3856 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3857 ".rela.bss");
3858 BFD_ASSERT (s != NULL);
3859
3860 rela.r_offset = (h->root.u.def.value
3861 + h->root.u.def.section->output_section->vma
3862 + h->root.u.def.section->output_offset);
3863 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
3864 rela.r_addend = 0;
3865 sparc_elf_append_rela (output_bfd, s, &rela);
3866 }
3867
3868 /* Mark some specially defined symbols as absolute. On VxWorks,
3869 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
3870 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
3871 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3872 || (!htab->is_vxworks
3873 && (h == htab->elf.hgot || h == htab->elf.hplt)))
3874 sym->st_shndx = SHN_ABS;
3875
3876 return TRUE;
3877 }
3878
3879 /* Finish up the dynamic sections. */
3880
3881 static bfd_boolean
3882 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3883 bfd *dynobj, asection *sdyn,
3884 asection *splt ATTRIBUTE_UNUSED)
3885 {
3886 struct _bfd_sparc_elf_link_hash_table *htab;
3887 const struct elf_backend_data *bed;
3888 bfd_byte *dyncon, *dynconend;
3889 size_t dynsize;
3890 int stt_regidx = -1;
3891 bfd_boolean abi_64_p;
3892
3893 htab = _bfd_sparc_elf_hash_table (info);
3894 bed = get_elf_backend_data (output_bfd);
3895 dynsize = bed->s->sizeof_dyn;
3896 dynconend = sdyn->contents + sdyn->size;
3897 abi_64_p = ABI_64_P (output_bfd);
3898 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
3899 {
3900 Elf_Internal_Dyn dyn;
3901 const char *name;
3902 bfd_boolean size;
3903
3904 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
3905
3906 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
3907 {
3908 /* On VxWorks, DT_RELASZ should not include the relocations
3909 in .rela.plt. */
3910 if (htab->srelplt)
3911 {
3912 dyn.d_un.d_val -= htab->srelplt->size;
3913 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3914 }
3915 }
3916 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
3917 {
3918 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
3919 not to the start of the PLT. */
3920 if (htab->sgotplt)
3921 {
3922 dyn.d_un.d_val = (htab->sgotplt->output_section->vma
3923 + htab->sgotplt->output_offset);
3924 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3925 }
3926 }
3927 else if (htab->is_vxworks
3928 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
3929 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3930 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
3931 {
3932 if (stt_regidx == -1)
3933 {
3934 stt_regidx =
3935 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
3936 if (stt_regidx == -1)
3937 return FALSE;
3938 }
3939 dyn.d_un.d_val = stt_regidx++;
3940 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3941 }
3942 else
3943 {
3944 switch (dyn.d_tag)
3945 {
3946 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3947 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3948 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3949 default: name = NULL; size = FALSE; break;
3950 }
3951
3952 if (name != NULL)
3953 {
3954 asection *s;
3955
3956 s = bfd_get_section_by_name (output_bfd, name);
3957 if (s == NULL)
3958 dyn.d_un.d_val = 0;
3959 else
3960 {
3961 if (! size)
3962 dyn.d_un.d_ptr = s->vma;
3963 else
3964 dyn.d_un.d_val = s->size;
3965 }
3966 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3967 }
3968 }
3969 }
3970 return TRUE;
3971 }
3972
3973 /* Install the first PLT entry in a VxWorks executable and make sure that
3974 .rela.plt.unloaded relocations have the correct symbol indexes. */
3975
3976 static void
3977 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
3978 {
3979 struct _bfd_sparc_elf_link_hash_table *htab;
3980 Elf_Internal_Rela rela;
3981 bfd_vma got_base;
3982 bfd_byte *loc;
3983
3984 htab = _bfd_sparc_elf_hash_table (info);
3985
3986 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
3987 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
3988 + htab->elf.hgot->root.u.def.section->output_offset
3989 + htab->elf.hgot->root.u.def.value);
3990
3991 /* Install the initial PLT entry. */
3992 bfd_put_32 (output_bfd,
3993 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
3994 htab->splt->contents);
3995 bfd_put_32 (output_bfd,
3996 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
3997 htab->splt->contents + 4);
3998 bfd_put_32 (output_bfd,
3999 sparc_vxworks_exec_plt0_entry[2],
4000 htab->splt->contents + 8);
4001 bfd_put_32 (output_bfd,
4002 sparc_vxworks_exec_plt0_entry[3],
4003 htab->splt->contents + 12);
4004 bfd_put_32 (output_bfd,
4005 sparc_vxworks_exec_plt0_entry[4],
4006 htab->splt->contents + 16);
4007
4008 loc = htab->srelplt2->contents;
4009
4010 /* Add an unloaded relocation for the initial entry's "sethi". */
4011 rela.r_offset = (htab->splt->output_section->vma
4012 + htab->splt->output_offset);
4013 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4014 rela.r_addend = 8;
4015 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4016 loc += sizeof (Elf32_External_Rela);
4017
4018 /* Likewise the following "or". */
4019 rela.r_offset += 4;
4020 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4021 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4022 loc += sizeof (Elf32_External_Rela);
4023
4024 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4025 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4026 in which symbols were output. */
4027 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4028 {
4029 Elf_Internal_Rela rel;
4030
4031 /* The entry's initial "sethi" (against _G_O_T_). */
4032 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4033 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4034 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4035 loc += sizeof (Elf32_External_Rela);
4036
4037 /* The following "or" (also against _G_O_T_). */
4038 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4039 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4040 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4041 loc += sizeof (Elf32_External_Rela);
4042
4043 /* The .got.plt entry (against _P_L_T_). */
4044 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4045 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4046 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4047 loc += sizeof (Elf32_External_Rela);
4048 }
4049 }
4050
4051 /* Install the first PLT entry in a VxWorks shared object. */
4052
4053 static void
4054 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4055 {
4056 struct _bfd_sparc_elf_link_hash_table *htab;
4057 unsigned int i;
4058
4059 htab = _bfd_sparc_elf_hash_table (info);
4060 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4061 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4062 htab->splt->contents + i * 4);
4063 }
4064
4065 bfd_boolean
4066 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4067 {
4068 bfd *dynobj;
4069 asection *sdyn;
4070 struct _bfd_sparc_elf_link_hash_table *htab;
4071
4072 htab = _bfd_sparc_elf_hash_table (info);
4073 dynobj = htab->elf.dynobj;
4074
4075 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4076
4077 if (elf_hash_table (info)->dynamic_sections_created)
4078 {
4079 asection *splt;
4080
4081 splt = bfd_get_section_by_name (dynobj, ".plt");
4082 BFD_ASSERT (splt != NULL && sdyn != NULL);
4083
4084 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4085 return FALSE;
4086
4087 /* Initialize the contents of the .plt section. */
4088 if (splt->size > 0)
4089 {
4090 if (htab->is_vxworks)
4091 {
4092 if (info->shared)
4093 sparc_vxworks_finish_shared_plt (output_bfd, info);
4094 else
4095 sparc_vxworks_finish_exec_plt (output_bfd, info);
4096 }
4097 else
4098 {
4099 memset (splt->contents, 0, htab->plt_header_size);
4100 if (!ABI_64_P (output_bfd))
4101 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4102 splt->contents + splt->size - 4);
4103 }
4104 }
4105
4106 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4107 = (htab->is_vxworks || !ABI_64_P (output_bfd))
4108 ? 0 : htab->plt_entry_size;
4109 }
4110
4111 /* Set the first entry in the global offset table to the address of
4112 the dynamic section. */
4113 if (htab->sgot && htab->sgot->size > 0)
4114 {
4115 bfd_vma val = (sdyn ?
4116 sdyn->output_section->vma + sdyn->output_offset :
4117 0);
4118
4119 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->sgot->contents);
4120 }
4121
4122 if (htab->sgot)
4123 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize =
4124 SPARC_ELF_WORD_BYTES (htab);
4125
4126 return TRUE;
4127 }
4128
4129 \f
4130 /* Set the right machine number for a SPARC ELF file. */
4131
4132 bfd_boolean
4133 _bfd_sparc_elf_object_p (bfd *abfd)
4134 {
4135 if (ABI_64_P (abfd))
4136 {
4137 unsigned long mach = bfd_mach_sparc_v9;
4138
4139 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4140 mach = bfd_mach_sparc_v9b;
4141 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4142 mach = bfd_mach_sparc_v9a;
4143 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4144 }
4145 else
4146 {
4147 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4148 {
4149 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4150 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4151 bfd_mach_sparc_v8plusb);
4152 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4153 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4154 bfd_mach_sparc_v8plusa);
4155 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4156 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4157 bfd_mach_sparc_v8plus);
4158 else
4159 return FALSE;
4160 }
4161 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4162 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4163 bfd_mach_sparc_sparclite_le);
4164 else
4165 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4166 }
4167 }
4168
4169 /* Return address for Ith PLT stub in section PLT, for relocation REL
4170 or (bfd_vma) -1 if it should not be included. */
4171
4172 bfd_vma
4173 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4174 {
4175 if (ABI_64_P (plt->owner))
4176 {
4177 bfd_vma j;
4178
4179 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4180 if (i < PLT64_LARGE_THRESHOLD)
4181 return plt->vma + i * PLT64_ENTRY_SIZE;
4182
4183 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4184 i -= j;
4185 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4186 }
4187 else
4188 return rel->address;
4189 }
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