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