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* section.c (bfd_get_section_contents): Detect and handle the case
[binutils.git] / bfd / elfxx-sparc.c
blob6449f3b764e6b6ce91a7f548ca0173a3050ec9f2
1 /* SPARC-specific support for ELF
2 Copyright 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* This file handles functionality common to the different SPARC ABI's. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34
35 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
36 #define MINUS_ONE (~ (bfd_vma) 0)
37
38 #define ABI_64_P(abfd) \
39 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
40
41 /* The relocation "howto" table. */
42
43 /* Utility for performing the standard initial work of an instruction
44 relocation.
45 *PRELOCATION will contain the relocated item.
46 *PINSN will contain the instruction from the input stream.
47 If the result is `bfd_reloc_other' the caller can continue with
48 performing the relocation. Otherwise it must stop and return the
49 value to its caller. */
50
51 static bfd_reloc_status_type
52 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
53 PTR data, asection *input_section, bfd *output_bfd,
54 bfd_vma *prelocation, bfd_vma *pinsn)
55 {
56 bfd_vma relocation;
57 reloc_howto_type *howto = reloc_entry->howto;
58
59 if (output_bfd != (bfd *) NULL
60 && (symbol->flags & BSF_SECTION_SYM) == 0
61 && (! howto->partial_inplace
62 || reloc_entry->addend == 0))
63 {
64 reloc_entry->address += input_section->output_offset;
65 return bfd_reloc_ok;
66 }
67
68 /* This works because partial_inplace is FALSE. */
69 if (output_bfd != NULL)
70 return bfd_reloc_continue;
71
72 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
73 return bfd_reloc_outofrange;
74
75 relocation = (symbol->value
76 + symbol->section->output_section->vma
77 + symbol->section->output_offset);
78 relocation += reloc_entry->addend;
79 if (howto->pc_relative)
80 {
81 relocation -= (input_section->output_section->vma
82 + input_section->output_offset);
83 relocation -= reloc_entry->address;
84 }
85
86 *prelocation = relocation;
87 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
88 return bfd_reloc_other;
89 }
90
91 /* For unsupported relocs. */
92
93 static bfd_reloc_status_type
94 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
95 arelent *reloc_entry ATTRIBUTE_UNUSED,
96 asymbol *symbol ATTRIBUTE_UNUSED,
97 PTR data ATTRIBUTE_UNUSED,
98 asection *input_section ATTRIBUTE_UNUSED,
99 bfd *output_bfd ATTRIBUTE_UNUSED,
100 char **error_message ATTRIBUTE_UNUSED)
101 {
102 return bfd_reloc_notsupported;
103 }
104
105 /* Handle the WDISP16 reloc. */
106
107 static bfd_reloc_status_type
108 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
109 PTR data, asection *input_section, bfd *output_bfd,
110 char **error_message ATTRIBUTE_UNUSED)
111 {
112 bfd_vma relocation;
113 bfd_vma insn;
114 bfd_reloc_status_type status;
115
116 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
117 input_section, output_bfd, &relocation, &insn);
118 if (status != bfd_reloc_other)
119 return status;
120
121 insn &= ~ (bfd_vma) 0x303fff;
122 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
123 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
124
125 if ((bfd_signed_vma) relocation < - 0x40000
126 || (bfd_signed_vma) relocation > 0x3ffff)
127 return bfd_reloc_overflow;
128 else
129 return bfd_reloc_ok;
130 }
131
132 /* Handle the HIX22 reloc. */
133
134 static bfd_reloc_status_type
135 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
136 PTR data, asection *input_section, bfd *output_bfd,
137 char **error_message ATTRIBUTE_UNUSED)
138 {
139 bfd_vma relocation;
140 bfd_vma insn;
141 bfd_reloc_status_type status;
142
143 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
144 input_section, output_bfd, &relocation, &insn);
145 if (status != bfd_reloc_other)
146 return status;
147
148 relocation ^= MINUS_ONE;
149 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
150 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
151
152 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
153 return bfd_reloc_overflow;
154 else
155 return bfd_reloc_ok;
156 }
157
158 /* Handle the LOX10 reloc. */
159
160 static bfd_reloc_status_type
161 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
162 PTR data, asection *input_section, bfd *output_bfd,
163 char **error_message ATTRIBUTE_UNUSED)
164 {
165 bfd_vma relocation;
166 bfd_vma insn;
167 bfd_reloc_status_type status;
168
169 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
170 input_section, output_bfd, &relocation, &insn);
171 if (status != bfd_reloc_other)
172 return status;
173
174 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
175 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
176
177 return bfd_reloc_ok;
178 }
179
180 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
181 {
182 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
183 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
184 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
185 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
186 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
187 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
188 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
189 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
190 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
191 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
192 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
193 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
194 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
195 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
196 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
197 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
198 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
199 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
200 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
201 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
202 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
203 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
204 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
205 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
206 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
207 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
208 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
209 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
210 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
211 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
212 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
213 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
214 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
215 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
216 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
217 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
218 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
219 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE),
220 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE),
221 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
223 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
224 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
225 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
226 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
227 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
228 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
229 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
230 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
231 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
232 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
233 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
234 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
235 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
236 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
237 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
238 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
239 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
240 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
241 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
242 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
243 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
244 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
245 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
246 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
247 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
248 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
249 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
250 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
251 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
252 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
253 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
254 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
255 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
256 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
257 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
258 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
259 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE),
260 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
261 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE),
262 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE),
263 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE),
264 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE),
265 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE),
266 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE),
267 };
268 static reloc_howto_type sparc_vtinherit_howto =
269 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
270 static reloc_howto_type sparc_vtentry_howto =
271 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
272 static reloc_howto_type sparc_rev32_howto =
273 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
274
275 struct elf_reloc_map {
276 bfd_reloc_code_real_type bfd_reloc_val;
277 unsigned char elf_reloc_val;
278 };
279
280 static const struct elf_reloc_map sparc_reloc_map[] =
281 {
282 { BFD_RELOC_NONE, R_SPARC_NONE, },
283 { BFD_RELOC_16, R_SPARC_16, },
284 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
285 { BFD_RELOC_8, R_SPARC_8 },
286 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
287 { BFD_RELOC_CTOR, R_SPARC_64 },
288 { BFD_RELOC_32, R_SPARC_32 },
289 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
290 { BFD_RELOC_HI22, R_SPARC_HI22 },
291 { BFD_RELOC_LO10, R_SPARC_LO10, },
292 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
293 { BFD_RELOC_64_PCREL, R_SPARC_DISP64 },
294 { BFD_RELOC_SPARC22, R_SPARC_22 },
295 { BFD_RELOC_SPARC13, R_SPARC_13 },
296 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
297 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
298 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
299 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
300 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
301 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
302 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
303 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
304 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
305 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
306 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
307 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
308 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
309 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
310 { BFD_RELOC_SPARC_10, R_SPARC_10 },
311 { BFD_RELOC_SPARC_11, R_SPARC_11 },
312 { BFD_RELOC_SPARC_64, R_SPARC_64 },
313 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
314 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
315 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
316 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
317 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
318 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
319 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
320 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
321 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
322 { BFD_RELOC_SPARC_7, R_SPARC_7 },
323 { BFD_RELOC_SPARC_5, R_SPARC_5 },
324 { BFD_RELOC_SPARC_6, R_SPARC_6 },
325 { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 },
326 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 },
327 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 },
328 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD },
329 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL },
330 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 },
331 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 },
332 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD },
333 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL },
334 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 },
335 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 },
336 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD },
337 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 },
338 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 },
339 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD },
340 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX },
341 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD },
342 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 },
343 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 },
344 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 },
345 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 },
346 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 },
347 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 },
348 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 },
349 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 },
350 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
351 { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 },
352 { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 },
353 { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 },
354 { BFD_RELOC_SPARC_H44, R_SPARC_H44 },
355 { BFD_RELOC_SPARC_M44, R_SPARC_M44 },
356 { BFD_RELOC_SPARC_L44, R_SPARC_L44 },
357 { BFD_RELOC_SPARC_GOTDATA_HIX22, R_SPARC_GOTDATA_HIX22 },
358 { BFD_RELOC_SPARC_GOTDATA_LOX10, R_SPARC_GOTDATA_LOX10 },
359 { BFD_RELOC_SPARC_GOTDATA_OP_HIX22, R_SPARC_GOTDATA_OP_HIX22 },
360 { BFD_RELOC_SPARC_GOTDATA_OP_LOX10, R_SPARC_GOTDATA_OP_LOX10 },
361 { BFD_RELOC_SPARC_GOTDATA_OP, R_SPARC_GOTDATA_OP },
362 { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER },
363 { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
364 { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
365 { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 },
366 };
367
368 reloc_howto_type *
369 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
370 bfd_reloc_code_real_type code)
371 {
372 unsigned int i;
373
374 switch (code)
375 {
376 case BFD_RELOC_VTABLE_INHERIT:
377 return &sparc_vtinherit_howto;
378
379 case BFD_RELOC_VTABLE_ENTRY:
380 return &sparc_vtentry_howto;
381
382 case BFD_RELOC_SPARC_REV32:
383 return &sparc_rev32_howto;
384
385 default:
386 for (i = 0;
387 i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map);
388 i++)
389 {
390 if (sparc_reloc_map[i].bfd_reloc_val == code)
391 return (_bfd_sparc_elf_howto_table
392 + (int) sparc_reloc_map[i].elf_reloc_val);
393 }
394 }
395 bfd_set_error (bfd_error_bad_value);
396 return NULL;
397 }
398
399 reloc_howto_type *
400 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
401 const char *r_name)
402 {
403 unsigned int i;
404
405 for (i = 0;
406 i < (sizeof (_bfd_sparc_elf_howto_table)
407 / sizeof (_bfd_sparc_elf_howto_table[0]));
408 i++)
409 if (_bfd_sparc_elf_howto_table[i].name != NULL
410 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
411 return &_bfd_sparc_elf_howto_table[i];
412
413 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
414 return &sparc_vtinherit_howto;
415 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
416 return &sparc_vtentry_howto;
417 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
418 return &sparc_rev32_howto;
419
420 return NULL;
421 }
422
423 reloc_howto_type *
424 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
425 {
426 switch (r_type)
427 {
428 case R_SPARC_GNU_VTINHERIT:
429 return &sparc_vtinherit_howto;
430
431 case R_SPARC_GNU_VTENTRY:
432 return &sparc_vtentry_howto;
433
434 case R_SPARC_REV32:
435 return &sparc_rev32_howto;
436
437 default:
438 if (r_type >= (unsigned int) R_SPARC_max_std)
439 {
440 (*_bfd_error_handler) (_("invalid relocation type %d"),
441 (int) r_type);
442 r_type = R_SPARC_NONE;
443 }
444 return &_bfd_sparc_elf_howto_table[r_type];
445 }
446 }
447
448 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
449 so just take advantage of that. */
450 #define SPARC_ELF_R_TYPE(r_info) \
451 ((r_info) & 0xff)
452
453 void
454 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
455 Elf_Internal_Rela *dst)
456 {
457 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
458
459 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
460 }
461 \f
462
463 /* The nop opcode we use. */
464 #define SPARC_NOP 0x01000000
465
466 #define SPARC_INSN_BYTES 4
467
468 /* The SPARC linker needs to keep track of the number of relocs that it
469 decides to copy as dynamic relocs in check_relocs for each symbol.
470 This is so that it can later discard them if they are found to be
471 unnecessary. We store the information in a field extending the
472 regular ELF linker hash table. */
473
474 struct _bfd_sparc_elf_dyn_relocs
475 {
476 struct _bfd_sparc_elf_dyn_relocs *next;
477
478 /* The input section of the reloc. */
479 asection *sec;
480
481 /* Total number of relocs copied for the input section. */
482 bfd_size_type count;
483
484 /* Number of pc-relative relocs copied for the input section. */
485 bfd_size_type pc_count;
486 };
487
488 /* SPARC ELF linker hash entry. */
489
490 struct _bfd_sparc_elf_link_hash_entry
491 {
492 struct elf_link_hash_entry elf;
493
494 /* Track dynamic relocs copied for this symbol. */
495 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
496
497 #define GOT_UNKNOWN 0
498 #define GOT_NORMAL 1
499 #define GOT_TLS_GD 2
500 #define GOT_TLS_IE 3
501 unsigned char tls_type;
502 };
503
504 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
505
506 struct _bfd_sparc_elf_obj_tdata
507 {
508 struct elf_obj_tdata root;
509
510 /* tls_type for each local got entry. */
511 char *local_got_tls_type;
512
513 /* TRUE if TLS GD relocs has been seen for this object. */
514 bfd_boolean has_tlsgd;
515 };
516
517 #define _bfd_sparc_elf_tdata(abfd) \
518 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
519
520 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
521 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
522
523 #define is_sparc_elf(bfd) \
524 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
525 && elf_tdata (bfd) != NULL \
526 && elf_object_id (bfd) == SPARC_ELF_TDATA)
527
528 bfd_boolean
529 _bfd_sparc_elf_mkobject (bfd *abfd)
530 {
531 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
532 SPARC_ELF_TDATA);
533 }
534
535 static void
536 sparc_put_word_32 (bfd *bfd, bfd_vma val, void *ptr)
537 {
538 bfd_put_32 (bfd, val, ptr);
539 }
540
541 static void
542 sparc_put_word_64 (bfd *bfd, bfd_vma val, void *ptr)
543 {
544 bfd_put_64 (bfd, val, ptr);
545 }
546
547 static void
548 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
549 {
550 const struct elf_backend_data *bed;
551 bfd_byte *loc;
552
553 bed = get_elf_backend_data (abfd);
554 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
555 bed->s->swap_reloca_out (abfd, rel, loc);
556 }
557
558 static bfd_vma
559 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
560 bfd_vma index ATTRIBUTE_UNUSED,
561 bfd_vma type ATTRIBUTE_UNUSED)
562 {
563 return ELF64_R_INFO (index,
564 (in_rel ?
565 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
566 type) : type));
567 }
568
569 static bfd_vma
570 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
571 bfd_vma index, bfd_vma type)
572 {
573 return ELF32_R_INFO (index, type);
574 }
575
576 static bfd_vma
577 sparc_elf_r_symndx_64 (bfd_vma r_info)
578 {
579 bfd_vma r_symndx = ELF32_R_SYM (r_info);
580 return (r_symndx >> 24);
581 }
582
583 static bfd_vma
584 sparc_elf_r_symndx_32 (bfd_vma r_info)
585 {
586 return ELF32_R_SYM (r_info);
587 }
588
589 /* PLT/GOT stuff */
590
591 #define PLT32_ENTRY_SIZE 12
592 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
593
594 /* The first four entries in a 32-bit procedure linkage table are reserved,
595 and the initial contents are unimportant (we zero them out).
596 Subsequent entries look like this. See the SVR4 ABI SPARC
597 supplement to see how this works. */
598
599 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
600 #define PLT32_ENTRY_WORD0 0x03000000
601 /* b,a .plt0. We fill in the offset later. */
602 #define PLT32_ENTRY_WORD1 0x30800000
603 /* nop. */
604 #define PLT32_ENTRY_WORD2 SPARC_NOP
605
606 static int
607 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
608 bfd_vma max ATTRIBUTE_UNUSED,
609 bfd_vma *r_offset)
610 {
611 bfd_put_32 (output_bfd,
612 PLT32_ENTRY_WORD0 + offset,
613 splt->contents + offset);
614 bfd_put_32 (output_bfd,
615 (PLT32_ENTRY_WORD1
616 + (((- (offset + 4)) >> 2) & 0x3fffff)),
617 splt->contents + offset + 4);
618 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
619 splt->contents + offset + 8);
620
621 *r_offset = offset;
622
623 return offset / PLT32_ENTRY_SIZE - 4;
624 }
625
626 /* Both the headers and the entries are icache aligned. */
627 #define PLT64_ENTRY_SIZE 32
628 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
629 #define PLT64_LARGE_THRESHOLD 32768
630
631 static int
632 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
633 bfd_vma max, bfd_vma *r_offset)
634 {
635 unsigned char *entry = splt->contents + offset;
636 const unsigned int nop = SPARC_NOP;
637 int index;
638
639 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
640 {
641 unsigned int sethi, ba;
642
643 *r_offset = offset;
644
645 index = (offset / PLT64_ENTRY_SIZE);
646
647 sethi = 0x03000000 | (index * PLT64_ENTRY_SIZE);
648 ba = 0x30680000
649 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
650
651 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
652 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
653 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
654 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
655 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
656 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
657 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
658 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
659 }
660 else
661 {
662 unsigned char *ptr;
663 unsigned int ldx;
664 int block, last_block, ofs, last_ofs, chunks_this_block;
665 const int insn_chunk_size = (6 * 4);
666 const int ptr_chunk_size = (1 * 8);
667 const int entries_per_block = 160;
668 const int block_size = entries_per_block * (insn_chunk_size
669 + ptr_chunk_size);
670
671 /* Entries 32768 and higher are grouped into blocks of 160.
672 The blocks are further subdivided into 160 sequences of
673 6 instructions and 160 pointers. If a block does not require
674 the full 160 entries, let's say it requires N, then there
675 will be N sequences of 6 instructions and N pointers. */
676
677 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
678 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
679
680 block = offset / block_size;
681 last_block = max / block_size;
682 if (block != last_block)
683 {
684 chunks_this_block = 160;
685 }
686 else
687 {
688 last_ofs = max % block_size;
689 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
690 }
691
692 ofs = offset % block_size;
693
694 index = (PLT64_LARGE_THRESHOLD +
695 (block * 160) +
696 (ofs / insn_chunk_size));
697
698 ptr = splt->contents
699 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
700 + (block * block_size)
701 + (chunks_this_block * insn_chunk_size)
702 + (ofs / insn_chunk_size) * ptr_chunk_size;
703
704 *r_offset = (bfd_vma) (ptr - splt->contents);
705
706 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
707
708 /* mov %o7,%g5
709 call .+8
710 nop
711 ldx [%o7+P],%g1
712 jmpl %o7+%g1,%g1
713 mov %g5,%o7 */
714 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
715 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
716 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
717 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
718 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
719 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
720
721 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
722 }
723
724 return index - 4;
725 }
726
727 /* The format of the first PLT entry in a VxWorks executable. */
728 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
729 {
730 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
731 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
732 0xc4008000, /* ld [ %g2 ], %g2 */
733 0x81c08000, /* jmp %g2 */
734 0x01000000 /* nop */
735 };
736
737 /* The format of subsequent PLT entries. */
738 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
739 {
740 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
741 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
742 0xc2004000, /* ld [ %g1 ], %g1 */
743 0x81c04000, /* jmp %g1 */
744 0x01000000, /* nop */
745 0x03000000, /* sethi %hi(f@pltindex), %g1 */
746 0x10800000, /* b _PLT_resolve */
747 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
748 };
749
750 /* The format of the first PLT entry in a VxWorks shared object. */
751 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
752 {
753 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
754 0x81c08000, /* jmp %g2 */
755 0x01000000 /* nop */
756 };
757
758 /* The format of subsequent PLT entries. */
759 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
760 {
761 0x03000000, /* sethi %hi(f@got), %g1 */
762 0x82106000, /* or %g1, %lo(f@got), %g1 */
763 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
764 0x81c04000, /* jmp %g1 */
765 0x01000000, /* nop */
766 0x03000000, /* sethi %hi(f@pltindex), %g1 */
767 0x10800000, /* b _PLT_resolve */
768 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
769 };
770
771 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
772 htab->put_word(bfd, val, ptr)
773
774 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
775 htab->r_info(in_rel, index, type)
776
777 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
778 htab->r_symndx(r_info)
779
780 #define SPARC_ELF_WORD_BYTES(htab) \
781 htab->bytes_per_word
782
783 #define SPARC_ELF_RELA_BYTES(htab) \
784 htab->bytes_per_rela
785
786 #define SPARC_ELF_DTPOFF_RELOC(htab) \
787 htab->dtpoff_reloc
788
789 #define SPARC_ELF_DTPMOD_RELOC(htab) \
790 htab->dtpmod_reloc
791
792 #define SPARC_ELF_TPOFF_RELOC(htab) \
793 htab->tpoff_reloc
794
795 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
796 htab->build_plt_entry (obfd, splt, off, max, r_off)
797
798 /* Create an entry in an SPARC ELF linker hash table. */
799
800 static struct bfd_hash_entry *
801 link_hash_newfunc (struct bfd_hash_entry *entry,
802 struct bfd_hash_table *table, const char *string)
803 {
804 /* Allocate the structure if it has not already been allocated by a
805 subclass. */
806 if (entry == NULL)
807 {
808 entry = bfd_hash_allocate (table,
809 sizeof (struct _bfd_sparc_elf_link_hash_entry));
810 if (entry == NULL)
811 return entry;
812 }
813
814 /* Call the allocation method of the superclass. */
815 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
816 if (entry != NULL)
817 {
818 struct _bfd_sparc_elf_link_hash_entry *eh;
819
820 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
821 eh->dyn_relocs = NULL;
822 eh->tls_type = GOT_UNKNOWN;
823 }
824
825 return entry;
826 }
827
828 /* The name of the dynamic interpreter. This is put in the .interp
829 section. */
830
831 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
832 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
833
834 /* Create a SPARC ELF linker hash table. */
835
836 struct bfd_link_hash_table *
837 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
838 {
839 struct _bfd_sparc_elf_link_hash_table *ret;
840 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
841
842 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
843 if (ret == NULL)
844 return NULL;
845
846 if (ABI_64_P (abfd))
847 {
848 ret->put_word = sparc_put_word_64;
849 ret->r_info = sparc_elf_r_info_64;
850 ret->r_symndx = sparc_elf_r_symndx_64;
851 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
852 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
853 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
854 ret->word_align_power = 3;
855 ret->align_power_max = 4;
856 ret->bytes_per_word = 8;
857 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
858 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
859 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
860 }
861 else
862 {
863 ret->put_word = sparc_put_word_32;
864 ret->r_info = sparc_elf_r_info_32;
865 ret->r_symndx = sparc_elf_r_symndx_32;
866 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
867 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
868 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
869 ret->word_align_power = 2;
870 ret->align_power_max = 3;
871 ret->bytes_per_word = 4;
872 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
873 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
874 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
875 }
876
877 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
878 sizeof (struct _bfd_sparc_elf_link_hash_entry)))
879 {
880 free (ret);
881 return NULL;
882 }
883
884 return &ret->elf.root;
885 }
886
887 /* Create .got and .rela.got sections in DYNOBJ, and set up
888 shortcuts to them in our hash table. */
889
890 static bfd_boolean
891 create_got_section (bfd *dynobj, struct bfd_link_info *info)
892 {
893 struct _bfd_sparc_elf_link_hash_table *htab;
894
895 if (! _bfd_elf_create_got_section (dynobj, info))
896 return FALSE;
897
898 htab = _bfd_sparc_elf_hash_table (info);
899 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
900 BFD_ASSERT (htab->sgot != NULL);
901
902 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
903 SEC_ALLOC
904 | SEC_LOAD
905 | SEC_HAS_CONTENTS
906 | SEC_IN_MEMORY
907 | SEC_LINKER_CREATED
908 | SEC_READONLY);
909 if (htab->srelgot == NULL
910 || ! bfd_set_section_alignment (dynobj, htab->srelgot,
911 htab->word_align_power))
912 return FALSE;
913
914 if (htab->is_vxworks)
915 {
916 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
917 if (!htab->sgotplt)
918 return FALSE;
919 }
920
921 return TRUE;
922 }
923
924 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
925 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
926 hash table. */
927
928 bfd_boolean
929 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
930 struct bfd_link_info *info)
931 {
932 struct _bfd_sparc_elf_link_hash_table *htab;
933
934 htab = _bfd_sparc_elf_hash_table (info);
935 if (!htab->sgot && !create_got_section (dynobj, info))
936 return FALSE;
937
938 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
939 return FALSE;
940
941 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
942 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
943 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
944 if (!info->shared)
945 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
946
947 if (htab->is_vxworks)
948 {
949 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
950 return FALSE;
951 if (info->shared)
952 {
953 htab->plt_header_size
954 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
955 htab->plt_entry_size
956 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
957 }
958 else
959 {
960 htab->plt_header_size
961 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
962 htab->plt_entry_size
963 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
964 }
965 }
966 else
967 {
968 if (ABI_64_P (dynobj))
969 {
970 htab->build_plt_entry = sparc64_plt_entry_build;
971 htab->plt_header_size = PLT64_HEADER_SIZE;
972 htab->plt_entry_size = PLT64_ENTRY_SIZE;
973 }
974 else
975 {
976 htab->build_plt_entry = sparc32_plt_entry_build;
977 htab->plt_header_size = PLT32_HEADER_SIZE;
978 htab->plt_entry_size = PLT32_ENTRY_SIZE;
979 }
980 }
981
982 if (!htab->splt || !htab->srelplt || !htab->sdynbss
983 || (!info->shared && !htab->srelbss))
984 abort ();
985
986 return TRUE;
987 }
988
989 /* Copy the extra info we tack onto an elf_link_hash_entry. */
990
991 void
992 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
993 struct elf_link_hash_entry *dir,
994 struct elf_link_hash_entry *ind)
995 {
996 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
997
998 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
999 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1000
1001 if (eind->dyn_relocs != NULL)
1002 {
1003 if (edir->dyn_relocs != NULL)
1004 {
1005 struct _bfd_sparc_elf_dyn_relocs **pp;
1006 struct _bfd_sparc_elf_dyn_relocs *p;
1007
1008 /* Add reloc counts against the indirect sym to the direct sym
1009 list. Merge any entries against the same section. */
1010 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1011 {
1012 struct _bfd_sparc_elf_dyn_relocs *q;
1013
1014 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1015 if (q->sec == p->sec)
1016 {
1017 q->pc_count += p->pc_count;
1018 q->count += p->count;
1019 *pp = p->next;
1020 break;
1021 }
1022 if (q == NULL)
1023 pp = &p->next;
1024 }
1025 *pp = edir->dyn_relocs;
1026 }
1027
1028 edir->dyn_relocs = eind->dyn_relocs;
1029 eind->dyn_relocs = NULL;
1030 }
1031
1032 if (ind->root.type == bfd_link_hash_indirect
1033 && dir->got.refcount <= 0)
1034 {
1035 edir->tls_type = eind->tls_type;
1036 eind->tls_type = GOT_UNKNOWN;
1037 }
1038 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1039 }
1040
1041 static int
1042 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1043 int r_type, int is_local)
1044 {
1045 if (! ABI_64_P (abfd)
1046 && r_type == R_SPARC_TLS_GD_HI22
1047 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1048 r_type = R_SPARC_REV32;
1049
1050 if (info->shared)
1051 return r_type;
1052
1053 switch (r_type)
1054 {
1055 case R_SPARC_TLS_GD_HI22:
1056 if (is_local)
1057 return R_SPARC_TLS_LE_HIX22;
1058 return R_SPARC_TLS_IE_HI22;
1059 case R_SPARC_TLS_GD_LO10:
1060 if (is_local)
1061 return R_SPARC_TLS_LE_LOX10;
1062 return R_SPARC_TLS_IE_LO10;
1063 case R_SPARC_TLS_IE_HI22:
1064 if (is_local)
1065 return R_SPARC_TLS_LE_HIX22;
1066 return r_type;
1067 case R_SPARC_TLS_IE_LO10:
1068 if (is_local)
1069 return R_SPARC_TLS_LE_LOX10;
1070 return r_type;
1071 case R_SPARC_TLS_LDM_HI22:
1072 return R_SPARC_TLS_LE_HIX22;
1073 case R_SPARC_TLS_LDM_LO10:
1074 return R_SPARC_TLS_LE_LOX10;
1075 }
1076
1077 return r_type;
1078 }
1079 \f
1080 /* Look through the relocs for a section during the first phase, and
1081 allocate space in the global offset table or procedure linkage
1082 table. */
1083
1084 bfd_boolean
1085 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1086 asection *sec, const Elf_Internal_Rela *relocs)
1087 {
1088 struct _bfd_sparc_elf_link_hash_table *htab;
1089 Elf_Internal_Shdr *symtab_hdr;
1090 struct elf_link_hash_entry **sym_hashes;
1091 bfd_vma *local_got_offsets;
1092 const Elf_Internal_Rela *rel;
1093 const Elf_Internal_Rela *rel_end;
1094 asection *sreloc;
1095 int num_relocs;
1096 bfd_boolean checked_tlsgd = FALSE;
1097
1098 if (info->relocatable)
1099 return TRUE;
1100
1101 htab = _bfd_sparc_elf_hash_table (info);
1102 symtab_hdr = &elf_symtab_hdr (abfd);
1103 sym_hashes = elf_sym_hashes (abfd);
1104 local_got_offsets = elf_local_got_offsets (abfd);
1105
1106 sreloc = NULL;
1107
1108 if (ABI_64_P (abfd))
1109 num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr);
1110 else
1111 num_relocs = sec->reloc_count;
1112
1113 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1114
1115 rel_end = relocs + num_relocs;
1116 for (rel = relocs; rel < rel_end; rel++)
1117 {
1118 unsigned int r_type;
1119 unsigned long r_symndx;
1120 struct elf_link_hash_entry *h;
1121
1122 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1123 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1124
1125 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1126 {
1127 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1128 abfd, r_symndx);
1129 return FALSE;
1130 }
1131
1132 if (r_symndx < symtab_hdr->sh_info)
1133 h = NULL;
1134 else
1135 {
1136 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1137 while (h->root.type == bfd_link_hash_indirect
1138 || h->root.type == bfd_link_hash_warning)
1139 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1140 }
1141
1142 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1143 with R_SPARC_TLS_GD_HI22. */
1144 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1145 switch (r_type)
1146 {
1147 case R_SPARC_TLS_GD_HI22:
1148 {
1149 const Elf_Internal_Rela *relt;
1150
1151 for (relt = rel + 1; relt < rel_end; relt++)
1152 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1153 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1154 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1155 break;
1156 checked_tlsgd = TRUE;
1157 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1158 }
1159 break;
1160 case R_SPARC_TLS_GD_LO10:
1161 case R_SPARC_TLS_GD_ADD:
1162 case R_SPARC_TLS_GD_CALL:
1163 checked_tlsgd = TRUE;
1164 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1165 break;
1166 }
1167
1168 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1169 switch (r_type)
1170 {
1171 case R_SPARC_TLS_LDM_HI22:
1172 case R_SPARC_TLS_LDM_LO10:
1173 htab->tls_ldm_got.refcount += 1;
1174 break;
1175
1176 case R_SPARC_TLS_LE_HIX22:
1177 case R_SPARC_TLS_LE_LOX10:
1178 if (info->shared)
1179 goto r_sparc_plt32;
1180 break;
1181
1182 case R_SPARC_TLS_IE_HI22:
1183 case R_SPARC_TLS_IE_LO10:
1184 if (info->shared)
1185 info->flags |= DF_STATIC_TLS;
1186 /* Fall through */
1187
1188 case R_SPARC_GOT10:
1189 case R_SPARC_GOT13:
1190 case R_SPARC_GOT22:
1191 case R_SPARC_GOTDATA_HIX22:
1192 case R_SPARC_GOTDATA_LOX10:
1193 case R_SPARC_GOTDATA_OP_HIX22:
1194 case R_SPARC_GOTDATA_OP_LOX10:
1195 case R_SPARC_TLS_GD_HI22:
1196 case R_SPARC_TLS_GD_LO10:
1197 /* This symbol requires a global offset table entry. */
1198 {
1199 int tls_type, old_tls_type;
1200
1201 switch (r_type)
1202 {
1203 default:
1204 case R_SPARC_GOT10:
1205 case R_SPARC_GOT13:
1206 case R_SPARC_GOT22:
1207 case R_SPARC_GOTDATA_HIX22:
1208 case R_SPARC_GOTDATA_LOX10:
1209 case R_SPARC_GOTDATA_OP_HIX22:
1210 case R_SPARC_GOTDATA_OP_LOX10:
1211 tls_type = GOT_NORMAL;
1212 break;
1213 case R_SPARC_TLS_GD_HI22:
1214 case R_SPARC_TLS_GD_LO10:
1215 tls_type = GOT_TLS_GD;
1216 break;
1217 case R_SPARC_TLS_IE_HI22:
1218 case R_SPARC_TLS_IE_LO10:
1219 tls_type = GOT_TLS_IE;
1220 break;
1221 }
1222
1223 if (h != NULL)
1224 {
1225 h->got.refcount += 1;
1226 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1227 }
1228 else
1229 {
1230 bfd_signed_vma *local_got_refcounts;
1231
1232 /* This is a global offset table entry for a local symbol. */
1233 local_got_refcounts = elf_local_got_refcounts (abfd);
1234 if (local_got_refcounts == NULL)
1235 {
1236 bfd_size_type size;
1237
1238 size = symtab_hdr->sh_info;
1239 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1240 local_got_refcounts = ((bfd_signed_vma *)
1241 bfd_zalloc (abfd, size));
1242 if (local_got_refcounts == NULL)
1243 return FALSE;
1244 elf_local_got_refcounts (abfd) = local_got_refcounts;
1245 _bfd_sparc_elf_local_got_tls_type (abfd)
1246 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1247 }
1248 local_got_refcounts[r_symndx] += 1;
1249 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1250 }
1251
1252 /* If a TLS symbol is accessed using IE at least once,
1253 there is no point to use dynamic model for it. */
1254 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1255 && (old_tls_type != GOT_TLS_GD
1256 || tls_type != GOT_TLS_IE))
1257 {
1258 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1259 tls_type = old_tls_type;
1260 else
1261 {
1262 (*_bfd_error_handler)
1263 (_("%B: `%s' accessed both as normal and thread local symbol"),
1264 abfd, h ? h->root.root.string : "<local>");
1265 return FALSE;
1266 }
1267 }
1268
1269 if (old_tls_type != tls_type)
1270 {
1271 if (h != NULL)
1272 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1273 else
1274 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1275 }
1276 }
1277
1278 if (htab->sgot == NULL)
1279 {
1280 if (htab->elf.dynobj == NULL)
1281 htab->elf.dynobj = abfd;
1282 if (!create_got_section (htab->elf.dynobj, info))
1283 return FALSE;
1284 }
1285 break;
1286
1287 case R_SPARC_TLS_GD_CALL:
1288 case R_SPARC_TLS_LDM_CALL:
1289 if (info->shared)
1290 {
1291 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1292 __tls_get_addr. */
1293 struct bfd_link_hash_entry *bh = NULL;
1294 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1295 "__tls_get_addr", 0,
1296 bfd_und_section_ptr, 0,
1297 NULL, FALSE, FALSE,
1298 &bh))
1299 return FALSE;
1300 h = (struct elf_link_hash_entry *) bh;
1301 }
1302 else
1303 break;
1304 /* Fall through */
1305
1306 case R_SPARC_PLT32:
1307 case R_SPARC_WPLT30:
1308 case R_SPARC_HIPLT22:
1309 case R_SPARC_LOPLT10:
1310 case R_SPARC_PCPLT32:
1311 case R_SPARC_PCPLT22:
1312 case R_SPARC_PCPLT10:
1313 case R_SPARC_PLT64:
1314 /* This symbol requires a procedure linkage table entry. We
1315 actually build the entry in adjust_dynamic_symbol,
1316 because this might be a case of linking PIC code without
1317 linking in any dynamic objects, in which case we don't
1318 need to generate a procedure linkage table after all. */
1319
1320 if (h == NULL)
1321 {
1322 if (! ABI_64_P (abfd))
1323 {
1324 /* The Solaris native assembler will generate a WPLT30
1325 reloc for a local symbol if you assemble a call from
1326 one section to another when using -K pic. We treat
1327 it as WDISP30. */
1328 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1329 goto r_sparc_plt32;
1330 break;
1331 }
1332 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1333 else if (r_type == R_SPARC_WPLT30)
1334 break;
1335
1336 /* It does not make sense to have a procedure linkage
1337 table entry for a local symbol. */
1338 bfd_set_error (bfd_error_bad_value);
1339 return FALSE;
1340 }
1341
1342 h->needs_plt = 1;
1343
1344 {
1345 int this_r_type;
1346
1347 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1348 if (this_r_type == R_SPARC_PLT32
1349 || this_r_type == R_SPARC_PLT64)
1350 goto r_sparc_plt32;
1351 }
1352 h->plt.refcount += 1;
1353 break;
1354
1355 case R_SPARC_PC10:
1356 case R_SPARC_PC22:
1357 case R_SPARC_PC_HH22:
1358 case R_SPARC_PC_HM10:
1359 case R_SPARC_PC_LM22:
1360 if (h != NULL)
1361 h->non_got_ref = 1;
1362
1363 if (h != NULL
1364 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1365 break;
1366 /* Fall through. */
1367
1368 case R_SPARC_DISP8:
1369 case R_SPARC_DISP16:
1370 case R_SPARC_DISP32:
1371 case R_SPARC_DISP64:
1372 case R_SPARC_WDISP30:
1373 case R_SPARC_WDISP22:
1374 case R_SPARC_WDISP19:
1375 case R_SPARC_WDISP16:
1376 case R_SPARC_8:
1377 case R_SPARC_16:
1378 case R_SPARC_32:
1379 case R_SPARC_HI22:
1380 case R_SPARC_22:
1381 case R_SPARC_13:
1382 case R_SPARC_LO10:
1383 case R_SPARC_UA16:
1384 case R_SPARC_UA32:
1385 case R_SPARC_10:
1386 case R_SPARC_11:
1387 case R_SPARC_64:
1388 case R_SPARC_OLO10:
1389 case R_SPARC_HH22:
1390 case R_SPARC_HM10:
1391 case R_SPARC_LM22:
1392 case R_SPARC_7:
1393 case R_SPARC_5:
1394 case R_SPARC_6:
1395 case R_SPARC_HIX22:
1396 case R_SPARC_LOX10:
1397 case R_SPARC_H44:
1398 case R_SPARC_M44:
1399 case R_SPARC_L44:
1400 case R_SPARC_UA64:
1401 if (h != NULL)
1402 h->non_got_ref = 1;
1403
1404 r_sparc_plt32:
1405 if (h != NULL && !info->shared)
1406 {
1407 /* We may need a .plt entry if the function this reloc
1408 refers to is in a shared lib. */
1409 h->plt.refcount += 1;
1410 }
1411
1412 /* If we are creating a shared library, and this is a reloc
1413 against a global symbol, or a non PC relative reloc
1414 against a local symbol, then we need to copy the reloc
1415 into the shared library. However, if we are linking with
1416 -Bsymbolic, we do not need to copy a reloc against a
1417 global symbol which is defined in an object we are
1418 including in the link (i.e., DEF_REGULAR is set). At
1419 this point we have not seen all the input files, so it is
1420 possible that DEF_REGULAR is not set now but will be set
1421 later (it is never cleared). In case of a weak definition,
1422 DEF_REGULAR may be cleared later by a strong definition in
1423 a shared library. We account for that possibility below by
1424 storing information in the relocs_copied field of the hash
1425 table entry. A similar situation occurs when creating
1426 shared libraries and symbol visibility changes render the
1427 symbol local.
1428
1429 If on the other hand, we are creating an executable, we
1430 may need to keep relocations for symbols satisfied by a
1431 dynamic library if we manage to avoid copy relocs for the
1432 symbol. */
1433 if ((info->shared
1434 && (sec->flags & SEC_ALLOC) != 0
1435 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1436 || (h != NULL
1437 && (! info->symbolic
1438 || h->root.type == bfd_link_hash_defweak
1439 || !h->def_regular))))
1440 || (!info->shared
1441 && (sec->flags & SEC_ALLOC) != 0
1442 && h != NULL
1443 && (h->root.type == bfd_link_hash_defweak
1444 || !h->def_regular)))
1445 {
1446 struct _bfd_sparc_elf_dyn_relocs *p;
1447 struct _bfd_sparc_elf_dyn_relocs **head;
1448
1449 /* When creating a shared object, we must copy these
1450 relocs into the output file. We create a reloc
1451 section in dynobj and make room for the reloc. */
1452 if (sreloc == NULL)
1453 {
1454 if (htab->elf.dynobj == NULL)
1455 htab->elf.dynobj = abfd;
1456
1457 sreloc = _bfd_elf_make_dynamic_reloc_section
1458 (sec, htab->elf.dynobj, htab->word_align_power,
1459 abfd, /*rela?*/ TRUE);
1460
1461 if (sreloc == NULL)
1462 return FALSE;
1463 }
1464
1465 /* If this is a global symbol, we count the number of
1466 relocations we need for this symbol. */
1467 if (h != NULL)
1468 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1469 else
1470 {
1471 /* Track dynamic relocs needed for local syms too.
1472 We really need local syms available to do this
1473 easily. Oh well. */
1474
1475 asection *s;
1476 void *vpp;
1477
1478 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1479 sec, r_symndx);
1480 if (s == NULL)
1481 return FALSE;
1482
1483 vpp = &elf_section_data (s)->local_dynrel;
1484 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1485 }
1486
1487 p = *head;
1488 if (p == NULL || p->sec != sec)
1489 {
1490 bfd_size_type amt = sizeof *p;
1491 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1492 bfd_alloc (htab->elf.dynobj, amt));
1493 if (p == NULL)
1494 return FALSE;
1495 p->next = *head;
1496 *head = p;
1497 p->sec = sec;
1498 p->count = 0;
1499 p->pc_count = 0;
1500 }
1501
1502 p->count += 1;
1503 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1504 p->pc_count += 1;
1505 }
1506
1507 break;
1508
1509 case R_SPARC_GNU_VTINHERIT:
1510 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1511 return FALSE;
1512 break;
1513
1514 case R_SPARC_GNU_VTENTRY:
1515 BFD_ASSERT (h != NULL);
1516 if (h != NULL
1517 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1518 return FALSE;
1519 break;
1520
1521 case R_SPARC_REGISTER:
1522 /* Nothing to do. */
1523 break;
1524
1525 default:
1526 break;
1527 }
1528 }
1529
1530 return TRUE;
1531 }
1532 \f
1533 asection *
1534 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1535 struct bfd_link_info *info,
1536 Elf_Internal_Rela *rel,
1537 struct elf_link_hash_entry *h,
1538 Elf_Internal_Sym *sym)
1539 {
1540 if (h != NULL)
1541 switch (SPARC_ELF_R_TYPE (rel->r_info))
1542 {
1543 case R_SPARC_GNU_VTINHERIT:
1544 case R_SPARC_GNU_VTENTRY:
1545 return NULL;
1546 }
1547
1548 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1549 }
1550
1551 /* Update the got entry reference counts for the section being removed. */
1552 bfd_boolean
1553 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1554 asection *sec, const Elf_Internal_Rela *relocs)
1555 {
1556 struct _bfd_sparc_elf_link_hash_table *htab;
1557 Elf_Internal_Shdr *symtab_hdr;
1558 struct elf_link_hash_entry **sym_hashes;
1559 bfd_signed_vma *local_got_refcounts;
1560 const Elf_Internal_Rela *rel, *relend;
1561
1562 if (info->relocatable)
1563 return TRUE;
1564
1565 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1566
1567 elf_section_data (sec)->local_dynrel = NULL;
1568
1569 htab = _bfd_sparc_elf_hash_table (info);
1570 symtab_hdr = &elf_symtab_hdr (abfd);
1571 sym_hashes = elf_sym_hashes (abfd);
1572 local_got_refcounts = elf_local_got_refcounts (abfd);
1573
1574 relend = relocs + sec->reloc_count;
1575 for (rel = relocs; rel < relend; rel++)
1576 {
1577 unsigned long r_symndx;
1578 unsigned int r_type;
1579 struct elf_link_hash_entry *h = NULL;
1580
1581 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1582 if (r_symndx >= symtab_hdr->sh_info)
1583 {
1584 struct _bfd_sparc_elf_link_hash_entry *eh;
1585 struct _bfd_sparc_elf_dyn_relocs **pp;
1586 struct _bfd_sparc_elf_dyn_relocs *p;
1587
1588 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1589 while (h->root.type == bfd_link_hash_indirect
1590 || h->root.type == bfd_link_hash_warning)
1591 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1592 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1593 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1594 if (p->sec == sec)
1595 {
1596 /* Everything must go for SEC. */
1597 *pp = p->next;
1598 break;
1599 }
1600 }
1601
1602 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1603 r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL);
1604 switch (r_type)
1605 {
1606 case R_SPARC_TLS_LDM_HI22:
1607 case R_SPARC_TLS_LDM_LO10:
1608 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1609 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1610 break;
1611
1612 case R_SPARC_TLS_GD_HI22:
1613 case R_SPARC_TLS_GD_LO10:
1614 case R_SPARC_TLS_IE_HI22:
1615 case R_SPARC_TLS_IE_LO10:
1616 case R_SPARC_GOT10:
1617 case R_SPARC_GOT13:
1618 case R_SPARC_GOT22:
1619 case R_SPARC_GOTDATA_HIX22:
1620 case R_SPARC_GOTDATA_LOX10:
1621 case R_SPARC_GOTDATA_OP_HIX22:
1622 case R_SPARC_GOTDATA_OP_LOX10:
1623 if (h != NULL)
1624 {
1625 if (h->got.refcount > 0)
1626 h->got.refcount--;
1627 }
1628 else
1629 {
1630 if (local_got_refcounts[r_symndx] > 0)
1631 local_got_refcounts[r_symndx]--;
1632 }
1633 break;
1634
1635 case R_SPARC_PC10:
1636 case R_SPARC_PC22:
1637 case R_SPARC_PC_HH22:
1638 case R_SPARC_PC_HM10:
1639 case R_SPARC_PC_LM22:
1640 if (h != NULL
1641 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1642 break;
1643 /* Fall through. */
1644
1645 case R_SPARC_DISP8:
1646 case R_SPARC_DISP16:
1647 case R_SPARC_DISP32:
1648 case R_SPARC_DISP64:
1649 case R_SPARC_WDISP30:
1650 case R_SPARC_WDISP22:
1651 case R_SPARC_WDISP19:
1652 case R_SPARC_WDISP16:
1653 case R_SPARC_8:
1654 case R_SPARC_16:
1655 case R_SPARC_32:
1656 case R_SPARC_HI22:
1657 case R_SPARC_22:
1658 case R_SPARC_13:
1659 case R_SPARC_LO10:
1660 case R_SPARC_UA16:
1661 case R_SPARC_UA32:
1662 case R_SPARC_PLT32:
1663 case R_SPARC_10:
1664 case R_SPARC_11:
1665 case R_SPARC_64:
1666 case R_SPARC_OLO10:
1667 case R_SPARC_HH22:
1668 case R_SPARC_HM10:
1669 case R_SPARC_LM22:
1670 case R_SPARC_7:
1671 case R_SPARC_5:
1672 case R_SPARC_6:
1673 case R_SPARC_HIX22:
1674 case R_SPARC_LOX10:
1675 case R_SPARC_H44:
1676 case R_SPARC_M44:
1677 case R_SPARC_L44:
1678 case R_SPARC_UA64:
1679 if (info->shared)
1680 break;
1681 /* Fall through. */
1682
1683 case R_SPARC_WPLT30:
1684 if (h != NULL)
1685 {
1686 if (h->plt.refcount > 0)
1687 h->plt.refcount--;
1688 }
1689 break;
1690
1691 default:
1692 break;
1693 }
1694 }
1695
1696 return TRUE;
1697 }
1698
1699 /* Adjust a symbol defined by a dynamic object and referenced by a
1700 regular object. The current definition is in some section of the
1701 dynamic object, but we're not including those sections. We have to
1702 change the definition to something the rest of the link can
1703 understand. */
1704
1705 bfd_boolean
1706 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1707 struct elf_link_hash_entry *h)
1708 {
1709 struct _bfd_sparc_elf_link_hash_table *htab;
1710 struct _bfd_sparc_elf_link_hash_entry * eh;
1711 struct _bfd_sparc_elf_dyn_relocs *p;
1712 asection *s;
1713
1714 htab = _bfd_sparc_elf_hash_table (info);
1715
1716 /* Make sure we know what is going on here. */
1717 BFD_ASSERT (htab->elf.dynobj != NULL
1718 && (h->needs_plt
1719 || h->u.weakdef != NULL
1720 || (h->def_dynamic
1721 && h->ref_regular
1722 && !h->def_regular)));
1723
1724 /* If this is a function, put it in the procedure linkage table. We
1725 will fill in the contents of the procedure linkage table later
1726 (although we could actually do it here). The STT_NOTYPE
1727 condition is a hack specifically for the Oracle libraries
1728 delivered for Solaris; for some inexplicable reason, they define
1729 some of their functions as STT_NOTYPE when they really should be
1730 STT_FUNC. */
1731 if (h->type == STT_FUNC
1732 || h->needs_plt
1733 || (h->type == STT_NOTYPE
1734 && (h->root.type == bfd_link_hash_defined
1735 || h->root.type == bfd_link_hash_defweak)
1736 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1737 {
1738 if (h->plt.refcount <= 0
1739 || (! info->shared
1740 && !h->def_dynamic
1741 && !h->ref_dynamic
1742 && h->root.type != bfd_link_hash_undefweak
1743 && h->root.type != bfd_link_hash_undefined))
1744 {
1745 /* This case can occur if we saw a WPLT30 reloc in an input
1746 file, but the symbol was never referred to by a dynamic
1747 object, or if all references were garbage collected. In
1748 such a case, we don't actually need to build a procedure
1749 linkage table, and we can just do a WDISP30 reloc instead. */
1750 h->plt.offset = (bfd_vma) -1;
1751 h->needs_plt = 0;
1752 }
1753
1754 return TRUE;
1755 }
1756 else
1757 h->plt.offset = (bfd_vma) -1;
1758
1759 /* If this is a weak symbol, and there is a real definition, the
1760 processor independent code will have arranged for us to see the
1761 real definition first, and we can just use the same value. */
1762 if (h->u.weakdef != NULL)
1763 {
1764 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1765 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1766 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1767 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1768 return TRUE;
1769 }
1770
1771 /* This is a reference to a symbol defined by a dynamic object which
1772 is not a function. */
1773
1774 /* If we are creating a shared library, we must presume that the
1775 only references to the symbol are via the global offset table.
1776 For such cases we need not do anything here; the relocations will
1777 be handled correctly by relocate_section. */
1778 if (info->shared)
1779 return TRUE;
1780
1781 /* If there are no references to this symbol that do not use the
1782 GOT, we don't need to generate a copy reloc. */
1783 if (!h->non_got_ref)
1784 return TRUE;
1785
1786 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1787 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1788 {
1789 s = p->sec->output_section;
1790 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1791 break;
1792 }
1793
1794 /* If we didn't find any dynamic relocs in read-only sections, then
1795 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1796 if (p == NULL)
1797 {
1798 h->non_got_ref = 0;
1799 return TRUE;
1800 }
1801
1802 if (h->size == 0)
1803 {
1804 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1805 h->root.root.string);
1806 return TRUE;
1807 }
1808
1809 /* We must allocate the symbol in our .dynbss section, which will
1810 become part of the .bss section of the executable. There will be
1811 an entry for this symbol in the .dynsym section. The dynamic
1812 object will contain position independent code, so all references
1813 from the dynamic object to this symbol will go through the global
1814 offset table. The dynamic linker will use the .dynsym entry to
1815 determine the address it must put in the global offset table, so
1816 both the dynamic object and the regular object will refer to the
1817 same memory location for the variable. */
1818
1819 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1820 to copy the initial value out of the dynamic object and into the
1821 runtime process image. We need to remember the offset into the
1822 .rel.bss section we are going to use. */
1823 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1824 {
1825 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
1826 h->needs_copy = 1;
1827 }
1828
1829 s = htab->sdynbss;
1830
1831 return _bfd_elf_adjust_dynamic_copy (h, s);
1832 }
1833
1834 /* Allocate space in .plt, .got and associated reloc sections for
1835 dynamic relocs. */
1836
1837 static bfd_boolean
1838 allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
1839 {
1840 struct bfd_link_info *info;
1841 struct _bfd_sparc_elf_link_hash_table *htab;
1842 struct _bfd_sparc_elf_link_hash_entry *eh;
1843 struct _bfd_sparc_elf_dyn_relocs *p;
1844
1845 if (h->root.type == bfd_link_hash_indirect)
1846 return TRUE;
1847
1848 if (h->root.type == bfd_link_hash_warning)
1849 /* When warning symbols are created, they **replace** the "real"
1850 entry in the hash table, thus we never get to see the real
1851 symbol in a hash traversal. So look at it now. */
1852 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1853
1854 info = (struct bfd_link_info *) inf;
1855 htab = _bfd_sparc_elf_hash_table (info);
1856
1857 if (htab->elf.dynamic_sections_created
1858 && h->plt.refcount > 0)
1859 {
1860 /* Make sure this symbol is output as a dynamic symbol.
1861 Undefined weak syms won't yet be marked as dynamic. */
1862 if (h->dynindx == -1
1863 && !h->forced_local)
1864 {
1865 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1866 return FALSE;
1867 }
1868
1869 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1870 {
1871 asection *s = htab->splt;
1872
1873 /* Allocate room for the header. */
1874 if (s->size == 0)
1875 {
1876 s->size = htab->plt_header_size;
1877
1878 /* Allocate space for the .rela.plt.unloaded relocations. */
1879 if (htab->is_vxworks && !info->shared)
1880 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
1881 }
1882
1883 /* The procedure linkage table size is bounded by the magnitude
1884 of the offset we can describe in the entry. */
1885 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
1886 (((bfd_vma)1 << 31) << 1) : 0x400000))
1887 {
1888 bfd_set_error (bfd_error_bad_value);
1889 return FALSE;
1890 }
1891
1892 if (SPARC_ELF_WORD_BYTES(htab) == 8
1893 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
1894 {
1895 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
1896
1897
1898 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
1899
1900 h->plt.offset = (s->size - (off * 8));
1901 }
1902 else
1903 h->plt.offset = s->size;
1904
1905 /* If this symbol is not defined in a regular file, and we are
1906 not generating a shared library, then set the symbol to this
1907 location in the .plt. This is required to make function
1908 pointers compare as equal between the normal executable and
1909 the shared library. */
1910 if (! info->shared
1911 && !h->def_regular)
1912 {
1913 h->root.u.def.section = s;
1914 h->root.u.def.value = h->plt.offset;
1915 }
1916
1917 /* Make room for this entry. */
1918 s->size += htab->plt_entry_size;
1919
1920 /* We also need to make an entry in the .rela.plt section. */
1921 htab->srelplt->size += SPARC_ELF_RELA_BYTES (htab);
1922
1923 if (htab->is_vxworks)
1924 {
1925 /* Allocate space for the .got.plt entry. */
1926 htab->sgotplt->size += 4;
1927
1928 /* ...and for the .rela.plt.unloaded relocations. */
1929 if (!info->shared)
1930 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
1931 }
1932 }
1933 else
1934 {
1935 h->plt.offset = (bfd_vma) -1;
1936 h->needs_plt = 0;
1937 }
1938 }
1939 else
1940 {
1941 h->plt.offset = (bfd_vma) -1;
1942 h->needs_plt = 0;
1943 }
1944
1945 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1946 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1947 if (h->got.refcount > 0
1948 && !info->shared
1949 && h->dynindx == -1
1950 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
1951 h->got.offset = (bfd_vma) -1;
1952 else if (h->got.refcount > 0)
1953 {
1954 asection *s;
1955 bfd_boolean dyn;
1956 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1957
1958 /* Make sure this symbol is output as a dynamic symbol.
1959 Undefined weak syms won't yet be marked as dynamic. */
1960 if (h->dynindx == -1
1961 && !h->forced_local)
1962 {
1963 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1964 return FALSE;
1965 }
1966
1967 s = htab->sgot;
1968 h->got.offset = s->size;
1969 s->size += SPARC_ELF_WORD_BYTES (htab);
1970 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1971 if (tls_type == GOT_TLS_GD)
1972 s->size += SPARC_ELF_WORD_BYTES (htab);
1973 dyn = htab->elf.dynamic_sections_created;
1974 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1975 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
1976 global. */
1977 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1978 || tls_type == GOT_TLS_IE)
1979 htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab);
1980 else if (tls_type == GOT_TLS_GD)
1981 htab->srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
1982 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
1983 htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab);
1984 }
1985 else
1986 h->got.offset = (bfd_vma) -1;
1987
1988 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1989 if (eh->dyn_relocs == NULL)
1990 return TRUE;
1991
1992 /* In the shared -Bsymbolic case, discard space allocated for
1993 dynamic pc-relative relocs against symbols which turn out to be
1994 defined in regular objects. For the normal shared case, discard
1995 space for pc-relative relocs that have become local due to symbol
1996 visibility changes. */
1997
1998 if (info->shared)
1999 {
2000 if (h->def_regular
2001 && (h->forced_local
2002 || info->symbolic))
2003 {
2004 struct _bfd_sparc_elf_dyn_relocs **pp;
2005
2006 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2007 {
2008 p->count -= p->pc_count;
2009 p->pc_count = 0;
2010 if (p->count == 0)
2011 *pp = p->next;
2012 else
2013 pp = &p->next;
2014 }
2015 }
2016
2017 if (htab->is_vxworks)
2018 {
2019 struct _bfd_sparc_elf_dyn_relocs **pp;
2020
2021 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2022 {
2023 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2024 *pp = p->next;
2025 else
2026 pp = &p->next;
2027 }
2028 }
2029
2030 /* Also discard relocs on undefined weak syms with non-default
2031 visibility. */
2032 if (eh->dyn_relocs != NULL
2033 && h->root.type == bfd_link_hash_undefweak)
2034 {
2035 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2036 eh->dyn_relocs = NULL;
2037
2038 /* Make sure undefined weak symbols are output as a dynamic
2039 symbol in PIEs. */
2040 else if (h->dynindx == -1
2041 && !h->forced_local)
2042 {
2043 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2044 return FALSE;
2045 }
2046 }
2047 }
2048 else
2049 {
2050 /* For the non-shared case, discard space for relocs against
2051 symbols which turn out to need copy relocs or are not
2052 dynamic. */
2053
2054 if (!h->non_got_ref
2055 && ((h->def_dynamic
2056 && !h->def_regular)
2057 || (htab->elf.dynamic_sections_created
2058 && (h->root.type == bfd_link_hash_undefweak
2059 || h->root.type == bfd_link_hash_undefined))))
2060 {
2061 /* Make sure this symbol is output as a dynamic symbol.
2062 Undefined weak syms won't yet be marked as dynamic. */
2063 if (h->dynindx == -1
2064 && !h->forced_local)
2065 {
2066 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2067 return FALSE;
2068 }
2069
2070 /* If that succeeded, we know we'll be keeping all the
2071 relocs. */
2072 if (h->dynindx != -1)
2073 goto keep;
2074 }
2075
2076 eh->dyn_relocs = NULL;
2077
2078 keep: ;
2079 }
2080
2081 /* Finally, allocate space. */
2082 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2083 {
2084 asection *sreloc = elf_section_data (p->sec)->sreloc;
2085 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2086 }
2087
2088 return TRUE;
2089 }
2090
2091 /* Find any dynamic relocs that apply to read-only sections. */
2092
2093 static bfd_boolean
2094 readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
2095 {
2096 struct _bfd_sparc_elf_link_hash_entry *eh;
2097 struct _bfd_sparc_elf_dyn_relocs *p;
2098
2099 if (h->root.type == bfd_link_hash_warning)
2100 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2101
2102 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2103 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2104 {
2105 asection *s = p->sec->output_section;
2106
2107 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2108 {
2109 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2110
2111 info->flags |= DF_TEXTREL;
2112
2113 /* Not an error, just cut short the traversal. */
2114 return FALSE;
2115 }
2116 }
2117 return TRUE;
2118 }
2119
2120 /* Return true if the dynamic symbol for a given section should be
2121 omitted when creating a shared library. */
2122
2123 bfd_boolean
2124 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2125 struct bfd_link_info *info,
2126 asection *p)
2127 {
2128 /* We keep the .got section symbol so that explicit relocations
2129 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2130 can be turned into relocations against the .got symbol. */
2131 if (strcmp (p->name, ".got") == 0)
2132 return FALSE;
2133
2134 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2135 }
2136
2137 /* Set the sizes of the dynamic sections. */
2138
2139 bfd_boolean
2140 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2141 struct bfd_link_info *info)
2142 {
2143 struct _bfd_sparc_elf_link_hash_table *htab;
2144 bfd *dynobj;
2145 asection *s;
2146 bfd *ibfd;
2147
2148 htab = _bfd_sparc_elf_hash_table (info);
2149 dynobj = htab->elf.dynobj;
2150 BFD_ASSERT (dynobj != NULL);
2151
2152 if (elf_hash_table (info)->dynamic_sections_created)
2153 {
2154 /* Set the contents of the .interp section to the interpreter. */
2155 if (info->executable)
2156 {
2157 s = bfd_get_section_by_name (dynobj, ".interp");
2158 BFD_ASSERT (s != NULL);
2159 s->size = htab->dynamic_interpreter_size;
2160 s->contents = (unsigned char *) htab->dynamic_interpreter;
2161 }
2162 }
2163
2164 /* Set up .got offsets for local syms, and space for local dynamic
2165 relocs. */
2166 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2167 {
2168 bfd_signed_vma *local_got;
2169 bfd_signed_vma *end_local_got;
2170 char *local_tls_type;
2171 bfd_size_type locsymcount;
2172 Elf_Internal_Shdr *symtab_hdr;
2173 asection *srel;
2174
2175 if (! is_sparc_elf (ibfd))
2176 continue;
2177
2178 for (s = ibfd->sections; s != NULL; s = s->next)
2179 {
2180 struct _bfd_sparc_elf_dyn_relocs *p;
2181
2182 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2183 {
2184 if (!bfd_is_abs_section (p->sec)
2185 && bfd_is_abs_section (p->sec->output_section))
2186 {
2187 /* Input section has been discarded, either because
2188 it is a copy of a linkonce section or due to
2189 linker script /DISCARD/, so we'll be discarding
2190 the relocs too. */
2191 }
2192 else if (htab->is_vxworks
2193 && strcmp (p->sec->output_section->name,
2194 ".tls_vars") == 0)
2195 {
2196 /* Relocations in vxworks .tls_vars sections are
2197 handled specially by the loader. */
2198 }
2199 else if (p->count != 0)
2200 {
2201 srel = elf_section_data (p->sec)->sreloc;
2202 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2203 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2204 info->flags |= DF_TEXTREL;
2205 }
2206 }
2207 }
2208
2209 local_got = elf_local_got_refcounts (ibfd);
2210 if (!local_got)
2211 continue;
2212
2213 symtab_hdr = &elf_symtab_hdr (ibfd);
2214 locsymcount = symtab_hdr->sh_info;
2215 end_local_got = local_got + locsymcount;
2216 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2217 s = htab->sgot;
2218 srel = htab->srelgot;
2219 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2220 {
2221 if (*local_got > 0)
2222 {
2223 *local_got = s->size;
2224 s->size += SPARC_ELF_WORD_BYTES (htab);
2225 if (*local_tls_type == GOT_TLS_GD)
2226 s->size += SPARC_ELF_WORD_BYTES (htab);
2227 if (info->shared
2228 || *local_tls_type == GOT_TLS_GD
2229 || *local_tls_type == GOT_TLS_IE)
2230 srel->size += SPARC_ELF_RELA_BYTES (htab);
2231 }
2232 else
2233 *local_got = (bfd_vma) -1;
2234 }
2235 }
2236
2237 if (htab->tls_ldm_got.refcount > 0)
2238 {
2239 /* Allocate 2 got entries and 1 dynamic reloc for
2240 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2241 htab->tls_ldm_got.offset = htab->sgot->size;
2242 htab->sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2243 htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2244 }
2245 else
2246 htab->tls_ldm_got.offset = -1;
2247
2248 /* Allocate global sym .plt and .got entries, and space for global
2249 sym dynamic relocs. */
2250 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2251
2252 if (! ABI_64_P (output_bfd)
2253 && !htab->is_vxworks
2254 && elf_hash_table (info)->dynamic_sections_created)
2255 {
2256 /* Make space for the trailing nop in .plt. */
2257 if (htab->splt->size > 0)
2258 htab->splt->size += 1 * SPARC_INSN_BYTES;
2259
2260 /* If the .got section is more than 0x1000 bytes, we add
2261 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2262 bit relocations have a greater chance of working.
2263
2264 FIXME: Make this optimization work for 64-bit too. */
2265 if (htab->sgot->size >= 0x1000
2266 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2267 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2268 }
2269
2270 /* The check_relocs and adjust_dynamic_symbol entry points have
2271 determined the sizes of the various dynamic sections. Allocate
2272 memory for them. */
2273 for (s = dynobj->sections; s != NULL; s = s->next)
2274 {
2275 if ((s->flags & SEC_LINKER_CREATED) == 0)
2276 continue;
2277
2278 if (s == htab->splt
2279 || s == htab->sgot
2280 || s == htab->sdynbss
2281 || s == htab->sgotplt)
2282 {
2283 /* Strip this section if we don't need it; see the
2284 comment below. */
2285 }
2286 else if (CONST_STRNEQ (s->name, ".rela"))
2287 {
2288 if (s->size != 0)
2289 {
2290 /* We use the reloc_count field as a counter if we need
2291 to copy relocs into the output file. */
2292 s->reloc_count = 0;
2293 }
2294 }
2295 else
2296 {
2297 /* It's not one of our sections. */
2298 continue;
2299 }
2300
2301 if (s->size == 0)
2302 {
2303 /* If we don't need this section, strip it from the
2304 output file. This is mostly to handle .rela.bss and
2305 .rela.plt. We must create both sections in
2306 create_dynamic_sections, because they must be created
2307 before the linker maps input sections to output
2308 sections. The linker does that before
2309 adjust_dynamic_symbol is called, and it is that
2310 function which decides whether anything needs to go
2311 into these sections. */
2312 s->flags |= SEC_EXCLUDE;
2313 continue;
2314 }
2315
2316 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2317 continue;
2318
2319 /* Allocate memory for the section contents. Zero the memory
2320 for the benefit of .rela.plt, which has 4 unused entries
2321 at the beginning, and we don't want garbage. */
2322 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2323 if (s->contents == NULL)
2324 return FALSE;
2325 }
2326
2327 if (elf_hash_table (info)->dynamic_sections_created)
2328 {
2329 /* Add some entries to the .dynamic section. We fill in the
2330 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2331 must add the entries now so that we get the correct size for
2332 the .dynamic section. The DT_DEBUG entry is filled in by the
2333 dynamic linker and used by the debugger. */
2334 #define add_dynamic_entry(TAG, VAL) \
2335 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2336
2337 if (info->executable)
2338 {
2339 if (!add_dynamic_entry (DT_DEBUG, 0))
2340 return FALSE;
2341 }
2342
2343 if (htab->srelplt->size != 0)
2344 {
2345 if (!add_dynamic_entry (DT_PLTGOT, 0)
2346 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2347 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2348 || !add_dynamic_entry (DT_JMPREL, 0))
2349 return FALSE;
2350 }
2351
2352 if (!add_dynamic_entry (DT_RELA, 0)
2353 || !add_dynamic_entry (DT_RELASZ, 0)
2354 || !add_dynamic_entry (DT_RELAENT,
2355 SPARC_ELF_RELA_BYTES (htab)))
2356 return FALSE;
2357
2358 /* If any dynamic relocs apply to a read-only section,
2359 then we need a DT_TEXTREL entry. */
2360 if ((info->flags & DF_TEXTREL) == 0)
2361 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2362 (PTR) info);
2363
2364 if (info->flags & DF_TEXTREL)
2365 {
2366 if (!add_dynamic_entry (DT_TEXTREL, 0))
2367 return FALSE;
2368 }
2369
2370 if (ABI_64_P (output_bfd))
2371 {
2372 int reg;
2373 struct _bfd_sparc_elf_app_reg * app_regs;
2374 struct elf_strtab_hash *dynstr;
2375 struct elf_link_hash_table *eht = elf_hash_table (info);
2376
2377 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2378 entries if needed. */
2379 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2380 dynstr = eht->dynstr;
2381
2382 for (reg = 0; reg < 4; reg++)
2383 if (app_regs [reg].name != NULL)
2384 {
2385 struct elf_link_local_dynamic_entry *entry, *e;
2386
2387 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2388 return FALSE;
2389
2390 entry = (struct elf_link_local_dynamic_entry *)
2391 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2392 if (entry == NULL)
2393 return FALSE;
2394
2395 /* We cheat here a little bit: the symbol will not be local, so we
2396 put it at the end of the dynlocal linked list. We will fix it
2397 later on, as we have to fix other fields anyway. */
2398 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2399 entry->isym.st_size = 0;
2400 if (*app_regs [reg].name != '\0')
2401 entry->isym.st_name
2402 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2403 else
2404 entry->isym.st_name = 0;
2405 entry->isym.st_other = 0;
2406 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2407 STT_REGISTER);
2408 entry->isym.st_shndx = app_regs [reg].shndx;
2409 entry->next = NULL;
2410 entry->input_bfd = output_bfd;
2411 entry->input_indx = -1;
2412
2413 if (eht->dynlocal == NULL)
2414 eht->dynlocal = entry;
2415 else
2416 {
2417 for (e = eht->dynlocal; e->next; e = e->next)
2418 ;
2419 e->next = entry;
2420 }
2421 eht->dynsymcount++;
2422 }
2423 }
2424 if (htab->is_vxworks
2425 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2426 return FALSE;
2427 }
2428 #undef add_dynamic_entry
2429
2430 return TRUE;
2431 }
2432 \f
2433 bfd_boolean
2434 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2435 {
2436 if (!sec->used_by_bfd)
2437 {
2438 struct _bfd_sparc_elf_section_data *sdata;
2439 bfd_size_type amt = sizeof (*sdata);
2440
2441 sdata = bfd_zalloc (abfd, amt);
2442 if (sdata == NULL)
2443 return FALSE;
2444 sec->used_by_bfd = sdata;
2445 }
2446
2447 return _bfd_elf_new_section_hook (abfd, sec);
2448 }
2449
2450 bfd_boolean
2451 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2452 struct bfd_section *section,
2453 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2454 bfd_boolean *again)
2455 {
2456 *again = FALSE;
2457 sec_do_relax (section) = 1;
2458 return TRUE;
2459 }
2460 \f
2461 /* Return the base VMA address which should be subtracted from real addresses
2462 when resolving @dtpoff relocation.
2463 This is PT_TLS segment p_vaddr. */
2464
2465 static bfd_vma
2466 dtpoff_base (struct bfd_link_info *info)
2467 {
2468 /* If tls_sec is NULL, we should have signalled an error already. */
2469 if (elf_hash_table (info)->tls_sec == NULL)
2470 return 0;
2471 return elf_hash_table (info)->tls_sec->vma;
2472 }
2473
2474 /* Return the relocation value for @tpoff relocation
2475 if STT_TLS virtual address is ADDRESS. */
2476
2477 static bfd_vma
2478 tpoff (struct bfd_link_info *info, bfd_vma address)
2479 {
2480 struct elf_link_hash_table *htab = elf_hash_table (info);
2481
2482 /* If tls_sec is NULL, we should have signalled an error already. */
2483 if (htab->tls_sec == NULL)
2484 return 0;
2485 return address - htab->tls_size - htab->tls_sec->vma;
2486 }
2487
2488 /* Relocate a SPARC ELF section. */
2489
2490 bfd_boolean
2491 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2492 struct bfd_link_info *info,
2493 bfd *input_bfd,
2494 asection *input_section,
2495 bfd_byte *contents,
2496 Elf_Internal_Rela *relocs,
2497 Elf_Internal_Sym *local_syms,
2498 asection **local_sections)
2499 {
2500 struct _bfd_sparc_elf_link_hash_table *htab;
2501 Elf_Internal_Shdr *symtab_hdr;
2502 struct elf_link_hash_entry **sym_hashes;
2503 bfd_vma *local_got_offsets;
2504 bfd_vma got_base;
2505 asection *sreloc;
2506 Elf_Internal_Rela *rel;
2507 Elf_Internal_Rela *relend;
2508 int num_relocs;
2509 bfd_boolean is_vxworks_tls;
2510
2511 htab = _bfd_sparc_elf_hash_table (info);
2512 symtab_hdr = &elf_symtab_hdr (input_bfd);
2513 sym_hashes = elf_sym_hashes (input_bfd);
2514 local_got_offsets = elf_local_got_offsets (input_bfd);
2515
2516 if (elf_hash_table (info)->hgot == NULL)
2517 got_base = 0;
2518 else
2519 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2520
2521 sreloc = elf_section_data (input_section)->sreloc;
2522 /* We have to handle relocations in vxworks .tls_vars sections
2523 specially, because the dynamic loader is 'weird'. */
2524 is_vxworks_tls = (htab->is_vxworks && info->shared
2525 && !strcmp (input_section->output_section->name,
2526 ".tls_vars"));
2527
2528 rel = relocs;
2529 if (ABI_64_P (output_bfd))
2530 num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr);
2531 else
2532 num_relocs = input_section->reloc_count;
2533 relend = relocs + num_relocs;
2534 for (; rel < relend; rel++)
2535 {
2536 int r_type, tls_type;
2537 reloc_howto_type *howto;
2538 unsigned long r_symndx;
2539 struct elf_link_hash_entry *h;
2540 Elf_Internal_Sym *sym;
2541 asection *sec;
2542 bfd_vma relocation, off;
2543 bfd_reloc_status_type r;
2544 bfd_boolean is_plt = FALSE;
2545 bfd_boolean unresolved_reloc;
2546
2547 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2548 if (r_type == R_SPARC_GNU_VTINHERIT
2549 || r_type == R_SPARC_GNU_VTENTRY)
2550 continue;
2551
2552 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2553 {
2554 bfd_set_error (bfd_error_bad_value);
2555 return FALSE;
2556 }
2557 howto = _bfd_sparc_elf_howto_table + r_type;
2558
2559 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2560 h = NULL;
2561 sym = NULL;
2562 sec = NULL;
2563 unresolved_reloc = FALSE;
2564 if (r_symndx < symtab_hdr->sh_info)
2565 {
2566 sym = local_syms + r_symndx;
2567 sec = local_sections[r_symndx];
2568 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2569 }
2570 else
2571 {
2572 bfd_boolean warned;
2573
2574 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2575 r_symndx, symtab_hdr, sym_hashes,
2576 h, sec, relocation,
2577 unresolved_reloc, warned);
2578 if (warned)
2579 {
2580 /* To avoid generating warning messages about truncated
2581 relocations, set the relocation's address to be the same as
2582 the start of this section. */
2583 if (input_section->output_section != NULL)
2584 relocation = input_section->output_section->vma;
2585 else
2586 relocation = 0;
2587 }
2588 }
2589
2590 if (sec != NULL && elf_discarded_section (sec))
2591 {
2592 /* For relocs against symbols from removed linkonce
2593 sections, or sections discarded by a linker script, we
2594 just want the section contents zeroed. Avoid any
2595 special processing. */
2596 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2597 rel->r_info = 0;
2598 rel->r_addend = 0;
2599 continue;
2600 }
2601
2602 if (info->relocatable)
2603 continue;
2604
2605 switch (r_type)
2606 {
2607 case R_SPARC_GOTDATA_HIX22:
2608 case R_SPARC_GOTDATA_LOX10:
2609 case R_SPARC_GOTDATA_OP_HIX22:
2610 case R_SPARC_GOTDATA_OP_LOX10:
2611 /* We don't support these code transformation optimizations
2612 yet, so just leave the sequence alone and treat as
2613 GOT22/GOT10. */
2614 if (r_type == R_SPARC_GOTDATA_HIX22
2615 || r_type == R_SPARC_GOTDATA_OP_HIX22)
2616 r_type = R_SPARC_GOT22;
2617 else
2618 r_type = R_SPARC_GOT10;
2619 /* Fall through. */
2620
2621 case R_SPARC_GOT10:
2622 case R_SPARC_GOT13:
2623 case R_SPARC_GOT22:
2624 /* Relocation is to the entry for this symbol in the global
2625 offset table. */
2626 if (htab->sgot == NULL)
2627 abort ();
2628
2629 if (h != NULL)
2630 {
2631 bfd_boolean dyn;
2632
2633 off = h->got.offset;
2634 BFD_ASSERT (off != (bfd_vma) -1);
2635 dyn = elf_hash_table (info)->dynamic_sections_created;
2636
2637 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2638 || (info->shared
2639 && (info->symbolic
2640 || h->dynindx == -1
2641 || h->forced_local)
2642 && h->def_regular))
2643 {
2644 /* This is actually a static link, or it is a
2645 -Bsymbolic link and the symbol is defined
2646 locally, or the symbol was forced to be local
2647 because of a version file. We must initialize
2648 this entry in the global offset table. Since the
2649 offset must always be a multiple of 8 for 64-bit
2650 and 4 for 32-bit, we use the least significant bit
2651 to record whether we have initialized it already.
2652
2653 When doing a dynamic link, we create a .rela.got
2654 relocation entry to initialize the value. This
2655 is done in the finish_dynamic_symbol routine. */
2656 if ((off & 1) != 0)
2657 off &= ~1;
2658 else
2659 {
2660 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
2661 htab->sgot->contents + off);
2662 h->got.offset |= 1;
2663 }
2664 }
2665 else
2666 unresolved_reloc = FALSE;
2667 }
2668 else
2669 {
2670 BFD_ASSERT (local_got_offsets != NULL
2671 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2672
2673 off = local_got_offsets[r_symndx];
2674
2675 /* The offset must always be a multiple of 8 on 64-bit and
2676 4 on 32-bit. We use the least significant bit to record
2677 whether we have already processed this entry. */
2678 if ((off & 1) != 0)
2679 off &= ~1;
2680 else
2681 {
2682
2683 if (info->shared)
2684 {
2685 asection *s;
2686 Elf_Internal_Rela outrel;
2687
2688 /* We need to generate a R_SPARC_RELATIVE reloc
2689 for the dynamic linker. */
2690 s = htab->srelgot;
2691 BFD_ASSERT (s != NULL);
2692
2693 outrel.r_offset = (htab->sgot->output_section->vma
2694 + htab->sgot->output_offset
2695 + off);
2696 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
2697 0, R_SPARC_RELATIVE);
2698 outrel.r_addend = relocation;
2699 relocation = 0;
2700 sparc_elf_append_rela (output_bfd, s, &outrel);
2701 }
2702
2703 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
2704 htab->sgot->contents + off);
2705 local_got_offsets[r_symndx] |= 1;
2706 }
2707 }
2708 relocation = htab->sgot->output_offset + off - got_base;
2709 break;
2710
2711 case R_SPARC_PLT32:
2712 case R_SPARC_PLT64:
2713 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2714 {
2715 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
2716 goto r_sparc_plt32;
2717 }
2718 /* Fall through. */
2719
2720 case R_SPARC_WPLT30:
2721 case R_SPARC_HIPLT22:
2722 case R_SPARC_LOPLT10:
2723 case R_SPARC_PCPLT32:
2724 case R_SPARC_PCPLT22:
2725 case R_SPARC_PCPLT10:
2726 r_sparc_wplt30:
2727 /* Relocation is to the entry for this symbol in the
2728 procedure linkage table. */
2729
2730 if (! ABI_64_P (output_bfd))
2731 {
2732 /* The Solaris native assembler will generate a WPLT30 reloc
2733 for a local symbol if you assemble a call from one
2734 section to another when using -K pic. We treat it as
2735 WDISP30. */
2736 if (h == NULL)
2737 break;
2738 }
2739 /* PR 7027: We need similar behaviour for 64-bit binaries. */
2740 else if (r_type == R_SPARC_WPLT30 && h == NULL)
2741 break;
2742 else
2743 {
2744 BFD_ASSERT (h != NULL);
2745 }
2746
2747 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
2748 {
2749 /* We didn't make a PLT entry for this symbol. This
2750 happens when statically linking PIC code, or when
2751 using -Bsymbolic. */
2752 break;
2753 }
2754
2755 relocation = (htab->splt->output_section->vma
2756 + htab->splt->output_offset
2757 + h->plt.offset);
2758 unresolved_reloc = FALSE;
2759 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
2760 {
2761 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
2762 is_plt = TRUE;
2763 goto r_sparc_plt32;
2764 }
2765 break;
2766
2767 case R_SPARC_PC10:
2768 case R_SPARC_PC22:
2769 case R_SPARC_PC_HH22:
2770 case R_SPARC_PC_HM10:
2771 case R_SPARC_PC_LM22:
2772 if (h != NULL
2773 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2774 break;
2775 /* Fall through. */
2776 case R_SPARC_DISP8:
2777 case R_SPARC_DISP16:
2778 case R_SPARC_DISP32:
2779 case R_SPARC_DISP64:
2780 case R_SPARC_WDISP30:
2781 case R_SPARC_WDISP22:
2782 case R_SPARC_WDISP19:
2783 case R_SPARC_WDISP16:
2784 case R_SPARC_8:
2785 case R_SPARC_16:
2786 case R_SPARC_32:
2787 case R_SPARC_HI22:
2788 case R_SPARC_22:
2789 case R_SPARC_13:
2790 case R_SPARC_LO10:
2791 case R_SPARC_UA16:
2792 case R_SPARC_UA32:
2793 case R_SPARC_10:
2794 case R_SPARC_11:
2795 case R_SPARC_64:
2796 case R_SPARC_OLO10:
2797 case R_SPARC_HH22:
2798 case R_SPARC_HM10:
2799 case R_SPARC_LM22:
2800 case R_SPARC_7:
2801 case R_SPARC_5:
2802 case R_SPARC_6:
2803 case R_SPARC_HIX22:
2804 case R_SPARC_LOX10:
2805 case R_SPARC_H44:
2806 case R_SPARC_M44:
2807 case R_SPARC_L44:
2808 case R_SPARC_UA64:
2809 r_sparc_plt32:
2810 if ((input_section->flags & SEC_ALLOC) == 0
2811 || is_vxworks_tls)
2812 break;
2813
2814 if ((info->shared
2815 && (h == NULL
2816 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2817 || h->root.type != bfd_link_hash_undefweak)
2818 && (! howto->pc_relative
2819 || (h != NULL
2820 && h->dynindx != -1
2821 && (! info->symbolic
2822 || !h->def_regular))))
2823 || (!info->shared
2824 && h != NULL
2825 && h->dynindx != -1
2826 && !h->non_got_ref
2827 && ((h->def_dynamic
2828 && !h->def_regular)
2829 || h->root.type == bfd_link_hash_undefweak
2830 || h->root.type == bfd_link_hash_undefined)))
2831 {
2832 Elf_Internal_Rela outrel;
2833 bfd_boolean skip, relocate = FALSE;
2834
2835 /* When generating a shared object, these relocations
2836 are copied into the output file to be resolved at run
2837 time. */
2838
2839 BFD_ASSERT (sreloc != NULL);
2840
2841 skip = FALSE;
2842
2843 outrel.r_offset =
2844 _bfd_elf_section_offset (output_bfd, info, input_section,
2845 rel->r_offset);
2846 if (outrel.r_offset == (bfd_vma) -1)
2847 skip = TRUE;
2848 else if (outrel.r_offset == (bfd_vma) -2)
2849 skip = TRUE, relocate = TRUE;
2850 outrel.r_offset += (input_section->output_section->vma
2851 + input_section->output_offset);
2852
2853 /* Optimize unaligned reloc usage now that we know where
2854 it finally resides. */
2855 switch (r_type)
2856 {
2857 case R_SPARC_16:
2858 if (outrel.r_offset & 1)
2859 r_type = R_SPARC_UA16;
2860 break;
2861 case R_SPARC_UA16:
2862 if (!(outrel.r_offset & 1))
2863 r_type = R_SPARC_16;
2864 break;
2865 case R_SPARC_32:
2866 if (outrel.r_offset & 3)
2867 r_type = R_SPARC_UA32;
2868 break;
2869 case R_SPARC_UA32:
2870 if (!(outrel.r_offset & 3))
2871 r_type = R_SPARC_32;
2872 break;
2873 case R_SPARC_64:
2874 if (outrel.r_offset & 7)
2875 r_type = R_SPARC_UA64;
2876 break;
2877 case R_SPARC_UA64:
2878 if (!(outrel.r_offset & 7))
2879 r_type = R_SPARC_64;
2880 break;
2881 case R_SPARC_DISP8:
2882 case R_SPARC_DISP16:
2883 case R_SPARC_DISP32:
2884 case R_SPARC_DISP64:
2885 /* If the symbol is not dynamic, we should not keep
2886 a dynamic relocation. But an .rela.* slot has been
2887 allocated for it, output R_SPARC_NONE.
2888 FIXME: Add code tracking needed dynamic relocs as
2889 e.g. i386 has. */
2890 if (h->dynindx == -1)
2891 skip = TRUE, relocate = TRUE;
2892 break;
2893 }
2894
2895 if (skip)
2896 memset (&outrel, 0, sizeof outrel);
2897 /* h->dynindx may be -1 if the symbol was marked to
2898 become local. */
2899 else if (h != NULL && ! is_plt
2900 && ((! info->symbolic && h->dynindx != -1)
2901 || !h->def_regular))
2902 {
2903 BFD_ASSERT (h->dynindx != -1);
2904 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
2905 outrel.r_addend = rel->r_addend;
2906 }
2907 else
2908 {
2909 if (r_type == R_SPARC_32 || r_type == R_SPARC_64)
2910 {
2911 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
2912 0, R_SPARC_RELATIVE);
2913 outrel.r_addend = relocation + rel->r_addend;
2914 }
2915 else
2916 {
2917 long indx;
2918
2919 outrel.r_addend = relocation + rel->r_addend;
2920
2921 if (is_plt)
2922 sec = htab->splt;
2923
2924 if (bfd_is_abs_section (sec))
2925 indx = 0;
2926 else if (sec == NULL || sec->owner == NULL)
2927 {
2928 bfd_set_error (bfd_error_bad_value);
2929 return FALSE;
2930 }
2931 else
2932 {
2933 asection *osec;
2934
2935 /* We are turning this relocation into one
2936 against a section symbol. It would be
2937 proper to subtract the symbol's value,
2938 osec->vma, from the emitted reloc addend,
2939 but ld.so expects buggy relocs. */
2940 osec = sec->output_section;
2941 indx = elf_section_data (osec)->dynindx;
2942
2943 if (indx == 0)
2944 {
2945 osec = htab->elf.text_index_section;
2946 indx = elf_section_data (osec)->dynindx;
2947 }
2948
2949 /* FIXME: we really should be able to link non-pic
2950 shared libraries. */
2951 if (indx == 0)
2952 {
2953 BFD_FAIL ();
2954 (*_bfd_error_handler)
2955 (_("%B: probably compiled without -fPIC?"),
2956 input_bfd);
2957 bfd_set_error (bfd_error_bad_value);
2958 return FALSE;
2959 }
2960 }
2961
2962 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
2963 r_type);
2964 }
2965 }
2966
2967 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
2968
2969 /* This reloc will be computed at runtime, so there's no
2970 need to do anything now. */
2971 if (! relocate)
2972 continue;
2973 }
2974 break;
2975
2976 case R_SPARC_TLS_GD_HI22:
2977 if (! ABI_64_P (input_bfd)
2978 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
2979 {
2980 /* R_SPARC_REV32 used the same reloc number as
2981 R_SPARC_TLS_GD_HI22. */
2982 r_type = R_SPARC_REV32;
2983 break;
2984 }
2985 /* Fall through */
2986
2987 case R_SPARC_TLS_GD_LO10:
2988 case R_SPARC_TLS_IE_HI22:
2989 case R_SPARC_TLS_IE_LO10:
2990 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
2991 tls_type = GOT_UNKNOWN;
2992 if (h == NULL && local_got_offsets)
2993 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
2994 else if (h != NULL)
2995 {
2996 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2997 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
2998 switch (SPARC_ELF_R_TYPE (rel->r_info))
2999 {
3000 case R_SPARC_TLS_GD_HI22:
3001 case R_SPARC_TLS_IE_HI22:
3002 r_type = R_SPARC_TLS_LE_HIX22;
3003 break;
3004 default:
3005 r_type = R_SPARC_TLS_LE_LOX10;
3006 break;
3007 }
3008 }
3009 if (tls_type == GOT_TLS_IE)
3010 switch (r_type)
3011 {
3012 case R_SPARC_TLS_GD_HI22:
3013 r_type = R_SPARC_TLS_IE_HI22;
3014 break;
3015 case R_SPARC_TLS_GD_LO10:
3016 r_type = R_SPARC_TLS_IE_LO10;
3017 break;
3018 }
3019
3020 if (r_type == R_SPARC_TLS_LE_HIX22)
3021 {
3022 relocation = tpoff (info, relocation);
3023 break;
3024 }
3025 if (r_type == R_SPARC_TLS_LE_LOX10)
3026 {
3027 /* Change add into xor. */
3028 relocation = tpoff (info, relocation);
3029 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3030 contents + rel->r_offset)
3031 | 0x80182000), contents + rel->r_offset);
3032 break;
3033 }
3034
3035 if (h != NULL)
3036 {
3037 off = h->got.offset;
3038 h->got.offset |= 1;
3039 }
3040 else
3041 {
3042 BFD_ASSERT (local_got_offsets != NULL);
3043 off = local_got_offsets[r_symndx];
3044 local_got_offsets[r_symndx] |= 1;
3045 }
3046
3047 r_sparc_tlsldm:
3048 if (htab->sgot == NULL)
3049 abort ();
3050
3051 if ((off & 1) != 0)
3052 off &= ~1;
3053 else
3054 {
3055 Elf_Internal_Rela outrel;
3056 int dr_type, indx;
3057
3058 if (htab->srelgot == NULL)
3059 abort ();
3060
3061 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, htab->sgot->contents + off);
3062 outrel.r_offset = (htab->sgot->output_section->vma
3063 + htab->sgot->output_offset + off);
3064 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3065 if (r_type == R_SPARC_TLS_IE_HI22
3066 || r_type == R_SPARC_TLS_IE_LO10)
3067 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3068 else
3069 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3070 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3071 outrel.r_addend = relocation - dtpoff_base (info);
3072 else
3073 outrel.r_addend = 0;
3074 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3075 sparc_elf_append_rela (output_bfd, htab->srelgot, &outrel);
3076
3077 if (r_type == R_SPARC_TLS_GD_HI22
3078 || r_type == R_SPARC_TLS_GD_LO10)
3079 {
3080 if (indx == 0)
3081 {
3082 BFD_ASSERT (! unresolved_reloc);
3083 SPARC_ELF_PUT_WORD (htab, output_bfd,
3084 relocation - dtpoff_base (info),
3085 (htab->sgot->contents + off
3086 + SPARC_ELF_WORD_BYTES (htab)));
3087 }
3088 else
3089 {
3090 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3091 (htab->sgot->contents + off
3092 + SPARC_ELF_WORD_BYTES (htab)));
3093 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3094 SPARC_ELF_DTPOFF_RELOC (htab));
3095 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3096 sparc_elf_append_rela (output_bfd, htab->srelgot,
3097 &outrel);
3098 }
3099 }
3100 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3101 {
3102 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3103 (htab->sgot->contents + off
3104 + SPARC_ELF_WORD_BYTES (htab)));
3105 }
3106 }
3107
3108 if (off >= (bfd_vma) -2)
3109 abort ();
3110
3111 relocation = htab->sgot->output_offset + off - got_base;
3112 unresolved_reloc = FALSE;
3113 howto = _bfd_sparc_elf_howto_table + r_type;
3114 break;
3115
3116 case R_SPARC_TLS_LDM_HI22:
3117 case R_SPARC_TLS_LDM_LO10:
3118 if (! info->shared)
3119 {
3120 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3121 continue;
3122 }
3123 off = htab->tls_ldm_got.offset;
3124 htab->tls_ldm_got.offset |= 1;
3125 goto r_sparc_tlsldm;
3126
3127 case R_SPARC_TLS_LDO_HIX22:
3128 case R_SPARC_TLS_LDO_LOX10:
3129 if (info->shared)
3130 {
3131 relocation -= dtpoff_base (info);
3132 break;
3133 }
3134
3135 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3136 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3137 /* Fall through. */
3138
3139 case R_SPARC_TLS_LE_HIX22:
3140 case R_SPARC_TLS_LE_LOX10:
3141 if (info->shared)
3142 {
3143 Elf_Internal_Rela outrel;
3144 bfd_boolean skip, relocate = FALSE;
3145
3146 BFD_ASSERT (sreloc != NULL);
3147 skip = FALSE;
3148 outrel.r_offset =
3149 _bfd_elf_section_offset (output_bfd, info, input_section,
3150 rel->r_offset);
3151 if (outrel.r_offset == (bfd_vma) -1)
3152 skip = TRUE;
3153 else if (outrel.r_offset == (bfd_vma) -2)
3154 skip = TRUE, relocate = TRUE;
3155 outrel.r_offset += (input_section->output_section->vma
3156 + input_section->output_offset);
3157 if (skip)
3158 memset (&outrel, 0, sizeof outrel);
3159 else
3160 {
3161 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3162 outrel.r_addend = relocation - dtpoff_base (info)
3163 + rel->r_addend;
3164 }
3165
3166 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3167 continue;
3168 }
3169 relocation = tpoff (info, relocation);
3170 break;
3171
3172 case R_SPARC_TLS_LDM_CALL:
3173 if (! info->shared)
3174 {
3175 /* mov %g0, %o0 */
3176 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3177 continue;
3178 }
3179 /* Fall through */
3180
3181 case R_SPARC_TLS_GD_CALL:
3182 tls_type = GOT_UNKNOWN;
3183 if (h == NULL && local_got_offsets)
3184 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3185 else if (h != NULL)
3186 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3187 if (! info->shared
3188 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3189 {
3190 bfd_vma insn;
3191
3192 if (!info->shared && (h == NULL || h->dynindx == -1))
3193 {
3194 /* GD -> LE */
3195 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3196 continue;
3197 }
3198
3199 /* GD -> IE */
3200 if (rel + 1 < relend
3201 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3202 && rel[1].r_offset == rel->r_offset + 4
3203 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3204 && (((insn = bfd_get_32 (input_bfd,
3205 contents + rel[1].r_offset))
3206 >> 25) & 0x1f) == 8)
3207 {
3208 /* We have
3209 call __tls_get_addr, %tgd_call(foo)
3210 add %reg1, %reg2, %o0, %tgd_add(foo)
3211 and change it into IE:
3212 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3213 add %g7, %o0, %o0, %tie_add(foo).
3214 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3215 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3216 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3217 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3218 contents + rel->r_offset);
3219 bfd_put_32 (output_bfd, 0x9001c008,
3220 contents + rel->r_offset + 4);
3221 rel++;
3222 continue;
3223 }
3224
3225 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
3226 continue;
3227 }
3228
3229 h = (struct elf_link_hash_entry *)
3230 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3231 FALSE, TRUE);
3232 BFD_ASSERT (h != NULL);
3233 r_type = R_SPARC_WPLT30;
3234 howto = _bfd_sparc_elf_howto_table + r_type;
3235 goto r_sparc_wplt30;
3236
3237 case R_SPARC_TLS_GD_ADD:
3238 tls_type = GOT_UNKNOWN;
3239 if (h == NULL && local_got_offsets)
3240 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3241 else if (h != NULL)
3242 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3243 if (! info->shared || tls_type == GOT_TLS_IE)
3244 {
3245 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3246 changed into IE:
3247 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3248 or LE:
3249 add %g7, %reg2, %reg3. */
3250 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3251 if ((h != NULL && h->dynindx != -1) || info->shared)
3252 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3253 else
3254 relocation = (insn & ~0x7c000) | 0x1c000;
3255 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3256 }
3257 continue;
3258
3259 case R_SPARC_TLS_LDM_ADD:
3260 if (! info->shared)
3261 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3262 continue;
3263
3264 case R_SPARC_TLS_LDO_ADD:
3265 if (! info->shared)
3266 {
3267 /* Change rs1 into %g7. */
3268 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3269 insn = (insn & ~0x7c000) | 0x1c000;
3270 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3271 }
3272 continue;
3273
3274 case R_SPARC_GOTDATA_OP:
3275 /* We don't support gotdata code transformation optimizations
3276 yet, so simply leave the sequence as-is. */
3277 continue;
3278
3279 case R_SPARC_TLS_IE_LD:
3280 case R_SPARC_TLS_IE_LDX:
3281 if (! info->shared && (h == NULL || h->dynindx == -1))
3282 {
3283 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3284 int rs2 = insn & 0x1f;
3285 int rd = (insn >> 25) & 0x1f;
3286
3287 if (rs2 == rd)
3288 relocation = SPARC_NOP;
3289 else
3290 relocation = 0x80100000 | (insn & 0x3e00001f);
3291 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3292 }
3293 continue;
3294
3295 case R_SPARC_TLS_IE_ADD:
3296 /* Totally useless relocation. */
3297 continue;
3298
3299 case R_SPARC_TLS_DTPOFF32:
3300 case R_SPARC_TLS_DTPOFF64:
3301 relocation -= dtpoff_base (info);
3302 break;
3303
3304 default:
3305 break;
3306 }
3307
3308 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3309 because such sections are not SEC_ALLOC and thus ld.so will
3310 not process them. */
3311 if (unresolved_reloc
3312 && !((input_section->flags & SEC_DEBUGGING) != 0
3313 && h->def_dynamic))
3314 (*_bfd_error_handler)
3315 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3316 input_bfd,
3317 input_section,
3318 (long) rel->r_offset,
3319 howto->name,
3320 h->root.root.string);
3321
3322 r = bfd_reloc_continue;
3323 if (r_type == R_SPARC_OLO10)
3324 {
3325 bfd_vma x;
3326
3327 if (! ABI_64_P (output_bfd))
3328 abort ();
3329
3330 relocation += rel->r_addend;
3331 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3332
3333 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3334 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3335 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3336
3337 r = bfd_check_overflow (howto->complain_on_overflow,
3338 howto->bitsize, howto->rightshift,
3339 bfd_arch_bits_per_address (input_bfd),
3340 relocation);
3341 }
3342 else if (r_type == R_SPARC_WDISP16)
3343 {
3344 bfd_vma x;
3345
3346 relocation += rel->r_addend;
3347 relocation -= (input_section->output_section->vma
3348 + input_section->output_offset);
3349 relocation -= rel->r_offset;
3350
3351 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3352 x |= ((((relocation >> 2) & 0xc000) << 6)
3353 | ((relocation >> 2) & 0x3fff));
3354 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3355
3356 r = bfd_check_overflow (howto->complain_on_overflow,
3357 howto->bitsize, howto->rightshift,
3358 bfd_arch_bits_per_address (input_bfd),
3359 relocation);
3360 }
3361 else if (r_type == R_SPARC_REV32)
3362 {
3363 bfd_vma x;
3364
3365 relocation = relocation + rel->r_addend;
3366
3367 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3368 x = x + relocation;
3369 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3370 r = bfd_reloc_ok;
3371 }
3372 else if (r_type == R_SPARC_TLS_LDO_HIX22
3373 || r_type == R_SPARC_TLS_LE_HIX22)
3374 {
3375 bfd_vma x;
3376
3377 relocation += rel->r_addend;
3378 if (r_type == R_SPARC_TLS_LE_HIX22)
3379 relocation ^= MINUS_ONE;
3380
3381 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3382 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3383 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3384 r = bfd_reloc_ok;
3385 }
3386 else if (r_type == R_SPARC_TLS_LDO_LOX10
3387 || r_type == R_SPARC_TLS_LE_LOX10)
3388 {
3389 bfd_vma x;
3390
3391 relocation += rel->r_addend;
3392 relocation &= 0x3ff;
3393 if (r_type == R_SPARC_TLS_LE_LOX10)
3394 relocation |= 0x1c00;
3395
3396 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3397 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3398 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3399
3400 r = bfd_reloc_ok;
3401 }
3402 else if (r_type == R_SPARC_HIX22)
3403 {
3404 bfd_vma x;
3405
3406 relocation += rel->r_addend;
3407 relocation = relocation ^ MINUS_ONE;
3408
3409 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3410 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3411 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3412
3413 r = bfd_check_overflow (howto->complain_on_overflow,
3414 howto->bitsize, howto->rightshift,
3415 bfd_arch_bits_per_address (input_bfd),
3416 relocation);
3417 }
3418 else if (r_type == R_SPARC_LOX10)
3419 {
3420 bfd_vma x;
3421
3422 relocation += rel->r_addend;
3423 relocation = (relocation & 0x3ff) | 0x1c00;
3424
3425 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3426 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3427 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3428
3429 r = bfd_reloc_ok;
3430 }
3431 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
3432 && sec_do_relax (input_section)
3433 && rel->r_offset + 4 < input_section->size)
3434 {
3435 #define G0 0
3436 #define O7 15
3437 #define XCC (2 << 20)
3438 #define COND(x) (((x)&0xf)<<25)
3439 #define CONDA COND(0x8)
3440 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
3441 #define INSN_BA (F2(0,2) | CONDA)
3442 #define INSN_OR F3(2, 0x2, 0)
3443 #define INSN_NOP F2(0,4)
3444
3445 bfd_vma x, y;
3446
3447 /* If the instruction is a call with either:
3448 restore
3449 arithmetic instruction with rd == %o7
3450 where rs1 != %o7 and rs2 if it is register != %o7
3451 then we can optimize if the call destination is near
3452 by changing the call into a branch always. */
3453 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3454 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3455 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
3456 {
3457 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
3458 || ((y & OP3(0x28)) == 0 /* arithmetic */
3459 && (y & RD(~0)) == RD(O7)))
3460 && (y & RS1(~0)) != RS1(O7)
3461 && ((y & F3I(~0))
3462 || (y & RS2(~0)) != RS2(O7)))
3463 {
3464 bfd_vma reloc;
3465
3466 reloc = relocation + rel->r_addend - rel->r_offset;
3467 reloc -= (input_section->output_section->vma
3468 + input_section->output_offset);
3469
3470 /* Ensure the branch fits into simm22. */
3471 if ((reloc & 3) == 0
3472 && ((reloc & ~(bfd_vma)0x7fffff) == 0
3473 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
3474 {
3475 reloc >>= 2;
3476
3477 /* Check whether it fits into simm19. */
3478 if (((reloc & 0x3c0000) == 0
3479 || (reloc & 0x3c0000) == 0x3c0000)
3480 && (ABI_64_P (output_bfd)
3481 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
3482 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
3483 else
3484 x = INSN_BA | (reloc & 0x3fffff); /* ba */
3485 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3486 r = bfd_reloc_ok;
3487 if (rel->r_offset >= 4
3488 && (y & (0xffffffff ^ RS1(~0)))
3489 == (INSN_OR | RD(O7) | RS2(G0)))
3490 {
3491 bfd_vma z;
3492 unsigned int reg;
3493
3494 z = bfd_get_32 (input_bfd,
3495 contents + rel->r_offset - 4);
3496 if ((z & (0xffffffff ^ RD(~0)))
3497 != (INSN_OR | RS1(O7) | RS2(G0)))
3498 break;
3499
3500 /* The sequence was
3501 or %o7, %g0, %rN
3502 call foo
3503 or %rN, %g0, %o7
3504
3505 If call foo was replaced with ba, replace
3506 or %rN, %g0, %o7 with nop. */
3507
3508 reg = (y & RS1(~0)) >> 14;
3509 if (reg != ((z & RD(~0)) >> 25)
3510 || reg == G0 || reg == O7)
3511 break;
3512
3513 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
3514 contents + rel->r_offset + 4);
3515 }
3516
3517 }
3518 }
3519 }
3520 }
3521
3522 if (r == bfd_reloc_continue)
3523 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3524 contents, rel->r_offset,
3525 relocation, rel->r_addend);
3526
3527 if (r != bfd_reloc_ok)
3528 {
3529 switch (r)
3530 {
3531 default:
3532 case bfd_reloc_outofrange:
3533 abort ();
3534 case bfd_reloc_overflow:
3535 {
3536 const char *name;
3537
3538 /* The Solaris native linker silently disregards overflows.
3539 We don't, but this breaks stabs debugging info, whose
3540 relocations are only 32-bits wide. Ignore overflows in
3541 this case and also for discarded entries. */
3542 if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32)
3543 && (((input_section->flags & SEC_DEBUGGING) != 0
3544 && strcmp (bfd_section_name (input_bfd,
3545 input_section),
3546 ".stab") == 0)
3547 || _bfd_elf_section_offset (output_bfd, info,
3548 input_section,
3549 rel->r_offset)
3550 == (bfd_vma)-1))
3551 break;
3552
3553 if (h != NULL)
3554 {
3555 /* Assume this is a call protected by other code that
3556 detect the symbol is undefined. If this is the case,
3557 we can safely ignore the overflow. If not, the
3558 program is hosed anyway, and a little warning isn't
3559 going to help. */
3560 if (h->root.type == bfd_link_hash_undefweak
3561 && howto->pc_relative)
3562 break;
3563
3564 name = NULL;
3565 }
3566 else
3567 {
3568 name = bfd_elf_string_from_elf_section (input_bfd,
3569 symtab_hdr->sh_link,
3570 sym->st_name);
3571 if (name == NULL)
3572 return FALSE;
3573 if (*name == '\0')
3574 name = bfd_section_name (input_bfd, sec);
3575 }
3576 if (! ((*info->callbacks->reloc_overflow)
3577 (info, (h ? &h->root : NULL), name, howto->name,
3578 (bfd_vma) 0, input_bfd, input_section,
3579 rel->r_offset)))
3580 return FALSE;
3581 }
3582 break;
3583 }
3584 }
3585 }
3586
3587 return TRUE;
3588 }
3589
3590 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
3591 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
3592 is the offset of the associated .got.plt entry from
3593 _GLOBAL_OFFSET_TABLE_. */
3594
3595 static void
3596 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
3597 bfd_vma plt_offset, bfd_vma plt_index,
3598 bfd_vma got_offset)
3599 {
3600 bfd_vma got_base;
3601 const bfd_vma *plt_entry;
3602 struct _bfd_sparc_elf_link_hash_table *htab;
3603 bfd_byte *loc;
3604 Elf_Internal_Rela rela;
3605
3606 htab = _bfd_sparc_elf_hash_table (info);
3607 if (info->shared)
3608 {
3609 plt_entry = sparc_vxworks_shared_plt_entry;
3610 got_base = 0;
3611 }
3612 else
3613 {
3614 plt_entry = sparc_vxworks_exec_plt_entry;
3615 got_base = (htab->elf.hgot->root.u.def.value
3616 + htab->elf.hgot->root.u.def.section->output_offset
3617 + htab->elf.hgot->root.u.def.section->output_section->vma);
3618 }
3619
3620 /* Fill in the entry in the procedure linkage table. */
3621 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
3622 htab->splt->contents + plt_offset);
3623 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
3624 htab->splt->contents + plt_offset + 4);
3625 bfd_put_32 (output_bfd, plt_entry[2],
3626 htab->splt->contents + plt_offset + 8);
3627 bfd_put_32 (output_bfd, plt_entry[3],
3628 htab->splt->contents + plt_offset + 12);
3629 bfd_put_32 (output_bfd, plt_entry[4],
3630 htab->splt->contents + plt_offset + 16);
3631 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
3632 htab->splt->contents + plt_offset + 20);
3633 /* PC-relative displacement for a branch to the start of
3634 the PLT section. */
3635 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
3636 & 0x003fffff),
3637 htab->splt->contents + plt_offset + 24);
3638 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
3639 htab->splt->contents + plt_offset + 28);
3640
3641 /* Fill in the .got.plt entry, pointing initially at the
3642 second half of the PLT entry. */
3643 BFD_ASSERT (htab->sgotplt != NULL);
3644 bfd_put_32 (output_bfd,
3645 htab->splt->output_section->vma
3646 + htab->splt->output_offset
3647 + plt_offset + 20,
3648 htab->sgotplt->contents + got_offset);
3649
3650 /* Add relocations to .rela.plt.unloaded. */
3651 if (!info->shared)
3652 {
3653 loc = (htab->srelplt2->contents
3654 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
3655
3656 /* Relocate the initial sethi. */
3657 rela.r_offset = (htab->splt->output_section->vma
3658 + htab->splt->output_offset
3659 + plt_offset);
3660 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
3661 rela.r_addend = got_offset;
3662 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3663 loc += sizeof (Elf32_External_Rela);
3664
3665 /* Likewise the following or. */
3666 rela.r_offset += 4;
3667 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
3668 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3669 loc += sizeof (Elf32_External_Rela);
3670
3671 /* Relocate the .got.plt entry. */
3672 rela.r_offset = (htab->sgotplt->output_section->vma
3673 + htab->sgotplt->output_offset
3674 + got_offset);
3675 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
3676 rela.r_addend = plt_offset + 20;
3677 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3678 }
3679 }
3680
3681 /* Finish up dynamic symbol handling. We set the contents of various
3682 dynamic sections here. */
3683
3684 bfd_boolean
3685 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
3686 struct bfd_link_info *info,
3687 struct elf_link_hash_entry *h,
3688 Elf_Internal_Sym *sym)
3689 {
3690 bfd *dynobj;
3691 struct _bfd_sparc_elf_link_hash_table *htab;
3692 const struct elf_backend_data *bed;
3693
3694 htab = _bfd_sparc_elf_hash_table (info);
3695 dynobj = htab->elf.dynobj;
3696 bed = get_elf_backend_data (output_bfd);
3697
3698 if (h->plt.offset != (bfd_vma) -1)
3699 {
3700 asection *splt;
3701 asection *srela;
3702 Elf_Internal_Rela rela;
3703 bfd_byte *loc;
3704 bfd_vma r_offset, got_offset;
3705 int rela_index;
3706
3707 /* This symbol has an entry in the PLT. Set it up. */
3708
3709 BFD_ASSERT (h->dynindx != -1);
3710
3711 splt = htab->splt;
3712 srela = htab->srelplt;
3713 BFD_ASSERT (splt != NULL && srela != NULL);
3714
3715 /* Fill in the entry in the .rela.plt section. */
3716 if (htab->is_vxworks)
3717 {
3718 /* Work out the index of this PLT entry. */
3719 rela_index = ((h->plt.offset - htab->plt_header_size)
3720 / htab->plt_entry_size);
3721
3722 /* Calculate the offset of the associated .got.plt entry.
3723 The first three entries are reserved. */
3724 got_offset = (rela_index + 3) * 4;
3725
3726 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
3727 rela_index, got_offset);
3728
3729
3730 /* On VxWorks, the relocation points to the .got.plt entry,
3731 not the .plt entry. */
3732 rela.r_offset = (htab->sgotplt->output_section->vma
3733 + htab->sgotplt->output_offset
3734 + got_offset);
3735 rela.r_addend = 0;
3736 }
3737 else
3738 {
3739 /* Fill in the entry in the procedure linkage table. */
3740 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
3741 h->plt.offset, splt->size,
3742 &r_offset);
3743
3744 rela.r_offset = r_offset
3745 + (splt->output_section->vma + splt->output_offset);
3746 if (! ABI_64_P (output_bfd)
3747 || h->plt.offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
3748 {
3749 rela.r_addend = 0;
3750 }
3751 else
3752 {
3753 rela.r_addend = (-(h->plt.offset + 4)
3754 - splt->output_section->vma
3755 - splt->output_offset);
3756 }
3757 }
3758 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_JMP_SLOT);
3759
3760 /* Adjust for the first 4 reserved elements in the .plt section
3761 when setting the offset in the .rela.plt section.
3762 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
3763 thus .plt[4] has corresponding .rela.plt[0] and so on. */
3764
3765 loc = srela->contents;
3766 loc += rela_index * bed->s->sizeof_rela;
3767 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3768
3769 if (!h->def_regular)
3770 {
3771 /* Mark the symbol as undefined, rather than as defined in
3772 the .plt section. Leave the value alone. */
3773 sym->st_shndx = SHN_UNDEF;
3774 /* If the symbol is weak, we do need to clear the value.
3775 Otherwise, the PLT entry would provide a definition for
3776 the symbol even if the symbol wasn't defined anywhere,
3777 and so the symbol would never be NULL. */
3778 if (!h->ref_regular_nonweak)
3779 sym->st_value = 0;
3780 }
3781 }
3782
3783 if (h->got.offset != (bfd_vma) -1
3784 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3785 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3786 {
3787 asection *sgot;
3788 asection *srela;
3789 Elf_Internal_Rela rela;
3790
3791 /* This symbol has an entry in the GOT. Set it up. */
3792
3793 sgot = htab->sgot;
3794 srela = htab->srelgot;
3795 BFD_ASSERT (sgot != NULL && srela != NULL);
3796
3797 rela.r_offset = (sgot->output_section->vma
3798 + sgot->output_offset
3799 + (h->got.offset &~ (bfd_vma) 1));
3800
3801 /* If this is a -Bsymbolic link, and the symbol is defined
3802 locally, we just want to emit a RELATIVE reloc. Likewise if
3803 the symbol was forced to be local because of a version file.
3804 The entry in the global offset table will already have been
3805 initialized in the relocate_section function. */
3806 if (info->shared
3807 && (info->symbolic || h->dynindx == -1)
3808 && h->def_regular)
3809 {
3810 asection *sec = h->root.u.def.section;
3811 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
3812 rela.r_addend = (h->root.u.def.value
3813 + sec->output_section->vma
3814 + sec->output_offset);
3815 }
3816 else
3817 {
3818 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
3819 rela.r_addend = 0;
3820 }
3821
3822 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3823 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3824 sparc_elf_append_rela (output_bfd, srela, &rela);
3825 }
3826
3827 if (h->needs_copy)
3828 {
3829 asection *s;
3830 Elf_Internal_Rela rela;
3831
3832 /* This symbols needs a copy reloc. Set it up. */
3833 BFD_ASSERT (h->dynindx != -1);
3834
3835 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3836 ".rela.bss");
3837 BFD_ASSERT (s != NULL);
3838
3839 rela.r_offset = (h->root.u.def.value
3840 + h->root.u.def.section->output_section->vma
3841 + h->root.u.def.section->output_offset);
3842 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
3843 rela.r_addend = 0;
3844 sparc_elf_append_rela (output_bfd, s, &rela);
3845 }
3846
3847 /* Mark some specially defined symbols as absolute. On VxWorks,
3848 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
3849 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
3850 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3851 || (!htab->is_vxworks
3852 && (h == htab->elf.hgot || h == htab->elf.hplt)))
3853 sym->st_shndx = SHN_ABS;
3854
3855 return TRUE;
3856 }
3857
3858 /* Finish up the dynamic sections. */
3859
3860 static bfd_boolean
3861 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3862 bfd *dynobj, asection *sdyn,
3863 asection *splt ATTRIBUTE_UNUSED)
3864 {
3865 struct _bfd_sparc_elf_link_hash_table *htab;
3866 const struct elf_backend_data *bed;
3867 bfd_byte *dyncon, *dynconend;
3868 size_t dynsize;
3869 int stt_regidx = -1;
3870 bfd_boolean abi_64_p;
3871
3872 htab = _bfd_sparc_elf_hash_table (info);
3873 bed = get_elf_backend_data (output_bfd);
3874 dynsize = bed->s->sizeof_dyn;
3875 dynconend = sdyn->contents + sdyn->size;
3876 abi_64_p = ABI_64_P (output_bfd);
3877 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
3878 {
3879 Elf_Internal_Dyn dyn;
3880 const char *name;
3881 bfd_boolean size;
3882
3883 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
3884
3885 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
3886 {
3887 /* On VxWorks, DT_RELASZ should not include the relocations
3888 in .rela.plt. */
3889 if (htab->srelplt)
3890 {
3891 dyn.d_un.d_val -= htab->srelplt->size;
3892 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3893 }
3894 }
3895 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
3896 {
3897 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
3898 not to the start of the PLT. */
3899 if (htab->sgotplt)
3900 {
3901 dyn.d_un.d_val = (htab->sgotplt->output_section->vma
3902 + htab->sgotplt->output_offset);
3903 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3904 }
3905 }
3906 else if (htab->is_vxworks
3907 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
3908 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3909 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
3910 {
3911 if (stt_regidx == -1)
3912 {
3913 stt_regidx =
3914 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
3915 if (stt_regidx == -1)
3916 return FALSE;
3917 }
3918 dyn.d_un.d_val = stt_regidx++;
3919 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3920 }
3921 else
3922 {
3923 switch (dyn.d_tag)
3924 {
3925 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3926 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3927 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3928 default: name = NULL; size = FALSE; break;
3929 }
3930
3931 if (name != NULL)
3932 {
3933 asection *s;
3934
3935 s = bfd_get_section_by_name (output_bfd, name);
3936 if (s == NULL)
3937 dyn.d_un.d_val = 0;
3938 else
3939 {
3940 if (! size)
3941 dyn.d_un.d_ptr = s->vma;
3942 else
3943 dyn.d_un.d_val = s->size;
3944 }
3945 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3946 }
3947 }
3948 }
3949 return TRUE;
3950 }
3951
3952 /* Install the first PLT entry in a VxWorks executable and make sure that
3953 .rela.plt.unloaded relocations have the correct symbol indexes. */
3954
3955 static void
3956 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
3957 {
3958 struct _bfd_sparc_elf_link_hash_table *htab;
3959 Elf_Internal_Rela rela;
3960 bfd_vma got_base;
3961 bfd_byte *loc;
3962
3963 htab = _bfd_sparc_elf_hash_table (info);
3964
3965 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
3966 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
3967 + htab->elf.hgot->root.u.def.section->output_offset
3968 + htab->elf.hgot->root.u.def.value);
3969
3970 /* Install the initial PLT entry. */
3971 bfd_put_32 (output_bfd,
3972 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
3973 htab->splt->contents);
3974 bfd_put_32 (output_bfd,
3975 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
3976 htab->splt->contents + 4);
3977 bfd_put_32 (output_bfd,
3978 sparc_vxworks_exec_plt0_entry[2],
3979 htab->splt->contents + 8);
3980 bfd_put_32 (output_bfd,
3981 sparc_vxworks_exec_plt0_entry[3],
3982 htab->splt->contents + 12);
3983 bfd_put_32 (output_bfd,
3984 sparc_vxworks_exec_plt0_entry[4],
3985 htab->splt->contents + 16);
3986
3987 loc = htab->srelplt2->contents;
3988
3989 /* Add an unloaded relocation for the initial entry's "sethi". */
3990 rela.r_offset = (htab->splt->output_section->vma
3991 + htab->splt->output_offset);
3992 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
3993 rela.r_addend = 8;
3994 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3995 loc += sizeof (Elf32_External_Rela);
3996
3997 /* Likewise the following "or". */
3998 rela.r_offset += 4;
3999 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4000 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4001 loc += sizeof (Elf32_External_Rela);
4002
4003 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4004 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4005 in which symbols were output. */
4006 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4007 {
4008 Elf_Internal_Rela rel;
4009
4010 /* The entry's initial "sethi" (against _G_O_T_). */
4011 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4012 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4013 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4014 loc += sizeof (Elf32_External_Rela);
4015
4016 /* The following "or" (also against _G_O_T_). */
4017 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4018 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4019 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4020 loc += sizeof (Elf32_External_Rela);
4021
4022 /* The .got.plt entry (against _P_L_T_). */
4023 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4024 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4025 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4026 loc += sizeof (Elf32_External_Rela);
4027 }
4028 }
4029
4030 /* Install the first PLT entry in a VxWorks shared object. */
4031
4032 static void
4033 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4034 {
4035 struct _bfd_sparc_elf_link_hash_table *htab;
4036 unsigned int i;
4037
4038 htab = _bfd_sparc_elf_hash_table (info);
4039 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4040 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4041 htab->splt->contents + i * 4);
4042 }
4043
4044 bfd_boolean
4045 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4046 {
4047 bfd *dynobj;
4048 asection *sdyn;
4049 struct _bfd_sparc_elf_link_hash_table *htab;
4050
4051 htab = _bfd_sparc_elf_hash_table (info);
4052 dynobj = htab->elf.dynobj;
4053
4054 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4055
4056 if (elf_hash_table (info)->dynamic_sections_created)
4057 {
4058 asection *splt;
4059
4060 splt = bfd_get_section_by_name (dynobj, ".plt");
4061 BFD_ASSERT (splt != NULL && sdyn != NULL);
4062
4063 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4064 return FALSE;
4065
4066 /* Initialize the contents of the .plt section. */
4067 if (splt->size > 0)
4068 {
4069 if (htab->is_vxworks)
4070 {
4071 if (info->shared)
4072 sparc_vxworks_finish_shared_plt (output_bfd, info);
4073 else
4074 sparc_vxworks_finish_exec_plt (output_bfd, info);
4075 }
4076 else
4077 {
4078 memset (splt->contents, 0, htab->plt_header_size);
4079 if (!ABI_64_P (output_bfd))
4080 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4081 splt->contents + splt->size - 4);
4082 }
4083 }
4084
4085 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4086 = (htab->is_vxworks || !ABI_64_P (output_bfd))
4087 ? 0 : htab->plt_entry_size;
4088 }
4089
4090 /* Set the first entry in the global offset table to the address of
4091 the dynamic section. */
4092 if (htab->sgot && htab->sgot->size > 0)
4093 {
4094 bfd_vma val = (sdyn ?
4095 sdyn->output_section->vma + sdyn->output_offset :
4096 0);
4097
4098 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->sgot->contents);
4099 }
4100
4101 if (htab->sgot)
4102 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize =
4103 SPARC_ELF_WORD_BYTES (htab);
4104
4105 return TRUE;
4106 }
4107
4108 \f
4109 /* Set the right machine number for a SPARC ELF file. */
4110
4111 bfd_boolean
4112 _bfd_sparc_elf_object_p (bfd *abfd)
4113 {
4114 if (ABI_64_P (abfd))
4115 {
4116 unsigned long mach = bfd_mach_sparc_v9;
4117
4118 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4119 mach = bfd_mach_sparc_v9b;
4120 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4121 mach = bfd_mach_sparc_v9a;
4122 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4123 }
4124 else
4125 {
4126 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4127 {
4128 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4129 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4130 bfd_mach_sparc_v8plusb);
4131 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4132 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4133 bfd_mach_sparc_v8plusa);
4134 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4135 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4136 bfd_mach_sparc_v8plus);
4137 else
4138 return FALSE;
4139 }
4140 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4141 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4142 bfd_mach_sparc_sparclite_le);
4143 else
4144 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4145 }
4146 }
4147
4148 /* Return address for Ith PLT stub in section PLT, for relocation REL
4149 or (bfd_vma) -1 if it should not be included. */
4150
4151 bfd_vma
4152 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4153 {
4154 if (ABI_64_P (plt->owner))
4155 {
4156 bfd_vma j;
4157
4158 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4159 if (i < PLT64_LARGE_THRESHOLD)
4160 return plt->vma + i * PLT64_ENTRY_SIZE;
4161
4162 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4163 i -= j;
4164 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4165 }
4166 else
4167 return rel->address;
4168 }
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