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Add tbm flag and TBM instruction pattern.
[binutils.git] / bfd / elfxx-sparc.c
blob33b6f136c2b01b7e071b73afc625c6552b5ec06c
1 /* SPARC-specific support for ELF
2 Copyright 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* This file handles functionality common to the different SPARC ABI's. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34 #include "objalloc.h"
35 #include "hashtab.h"
36
37 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
38 #define MINUS_ONE (~ (bfd_vma) 0)
39
40 #define ABI_64_P(abfd) \
41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
42
43 /* The relocation "howto" table. */
44
45 /* Utility for performing the standard initial work of an instruction
46 relocation.
47 *PRELOCATION will contain the relocated item.
48 *PINSN will contain the instruction from the input stream.
49 If the result is `bfd_reloc_other' the caller can continue with
50 performing the relocation. Otherwise it must stop and return the
51 value to its caller. */
52
53 static bfd_reloc_status_type
54 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
55 PTR data, asection *input_section, bfd *output_bfd,
56 bfd_vma *prelocation, bfd_vma *pinsn)
57 {
58 bfd_vma relocation;
59 reloc_howto_type *howto = reloc_entry->howto;
60
61 if (output_bfd != (bfd *) NULL
62 && (symbol->flags & BSF_SECTION_SYM) == 0
63 && (! howto->partial_inplace
64 || reloc_entry->addend == 0))
65 {
66 reloc_entry->address += input_section->output_offset;
67 return bfd_reloc_ok;
68 }
69
70 /* This works because partial_inplace is FALSE. */
71 if (output_bfd != NULL)
72 return bfd_reloc_continue;
73
74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
75 return bfd_reloc_outofrange;
76
77 relocation = (symbol->value
78 + symbol->section->output_section->vma
79 + symbol->section->output_offset);
80 relocation += reloc_entry->addend;
81 if (howto->pc_relative)
82 {
83 relocation -= (input_section->output_section->vma
84 + input_section->output_offset);
85 relocation -= reloc_entry->address;
86 }
87
88 *prelocation = relocation;
89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
90 return bfd_reloc_other;
91 }
92
93 /* For unsupported relocs. */
94
95 static bfd_reloc_status_type
96 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
97 arelent *reloc_entry ATTRIBUTE_UNUSED,
98 asymbol *symbol ATTRIBUTE_UNUSED,
99 PTR data ATTRIBUTE_UNUSED,
100 asection *input_section ATTRIBUTE_UNUSED,
101 bfd *output_bfd ATTRIBUTE_UNUSED,
102 char **error_message ATTRIBUTE_UNUSED)
103 {
104 return bfd_reloc_notsupported;
105 }
106
107 /* Handle the WDISP16 reloc. */
108
109 static bfd_reloc_status_type
110 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
111 PTR data, asection *input_section, bfd *output_bfd,
112 char **error_message ATTRIBUTE_UNUSED)
113 {
114 bfd_vma relocation;
115 bfd_vma insn;
116 bfd_reloc_status_type status;
117
118 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
119 input_section, output_bfd, &relocation, &insn);
120 if (status != bfd_reloc_other)
121 return status;
122
123 insn &= ~ (bfd_vma) 0x303fff;
124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
126
127 if ((bfd_signed_vma) relocation < - 0x40000
128 || (bfd_signed_vma) relocation > 0x3ffff)
129 return bfd_reloc_overflow;
130 else
131 return bfd_reloc_ok;
132 }
133
134 /* Handle the HIX22 reloc. */
135
136 static bfd_reloc_status_type
137 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 PTR data, asection *input_section, bfd *output_bfd,
139 char **error_message ATTRIBUTE_UNUSED)
140 {
141 bfd_vma relocation;
142 bfd_vma insn;
143 bfd_reloc_status_type status;
144
145 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
146 input_section, output_bfd, &relocation, &insn);
147 if (status != bfd_reloc_other)
148 return status;
149
150 relocation ^= MINUS_ONE;
151 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
152 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
153
154 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
155 return bfd_reloc_overflow;
156 else
157 return bfd_reloc_ok;
158 }
159
160 /* Handle the LOX10 reloc. */
161
162 static bfd_reloc_status_type
163 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
164 PTR data, asection *input_section, bfd *output_bfd,
165 char **error_message ATTRIBUTE_UNUSED)
166 {
167 bfd_vma relocation;
168 bfd_vma insn;
169 bfd_reloc_status_type status;
170
171 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
172 input_section, output_bfd, &relocation, &insn);
173 if (status != bfd_reloc_other)
174 return status;
175
176 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
177 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
178
179 return bfd_reloc_ok;
180 }
181
182 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
183 {
184 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
185 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
186 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
187 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
188 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
189 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
190 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
191 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
192 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
193 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
194 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
195 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
196 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
197 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
198 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
199 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
200 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
201 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
202 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
203 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
204 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
205 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
206 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
207 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
208 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
209 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
210 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
211 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
212 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
213 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
214 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
215 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
216 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE),
217 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE),
218 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE),
219 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE),
220 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE),
221 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE),
222 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE),
223 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE),
224 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
225 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
226 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
227 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
228 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
229 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
230 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE),
231 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE),
232 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE),
233 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE),
234 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE),
235 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE),
236 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE),
237 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE),
238 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE),
239 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
240 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
241 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
242 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
243 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
244 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
245 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
246 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
247 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
248 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
249 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
250 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
251 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
252 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
253 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
254 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
255 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
256 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
257 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
258 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
259 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
260 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
261 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE),
262 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
263 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE),
264 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE),
265 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE),
266 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE),
267 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE),
268 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE),
269 };
270 static reloc_howto_type sparc_jmp_irel_howto =
271 HOWTO(R_SPARC_JMP_IREL, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",FALSE,0,0x00000000,TRUE);
272 static reloc_howto_type sparc_irelative_howto =
273 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE);
274 static reloc_howto_type sparc_vtinherit_howto =
275 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
276 static reloc_howto_type sparc_vtentry_howto =
277 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
278 static reloc_howto_type sparc_rev32_howto =
279 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
280
281 reloc_howto_type *
282 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
283 bfd_reloc_code_real_type code)
284 {
285 /* We explicitly handle each relocation type in the switch
286 instead of using a lookup table for efficiency. */
287 switch (code)
288 {
289 case BFD_RELOC_NONE:
290 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
291
292 case BFD_RELOC_8:
293 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
294
295 case BFD_RELOC_16:
296 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
297
298 case BFD_RELOC_32:
299 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
300
301 case BFD_RELOC_8_PCREL:
302 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
303
304 case BFD_RELOC_16_PCREL:
305 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
306
307 case BFD_RELOC_32_PCREL:
308 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
309
310 case BFD_RELOC_32_PCREL_S2:
311 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
312
313 case BFD_RELOC_SPARC_WDISP22:
314 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
315
316 case BFD_RELOC_HI22:
317 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
318
319 case BFD_RELOC_SPARC22:
320 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
321
322 case BFD_RELOC_SPARC13:
323 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
324
325 case BFD_RELOC_LO10:
326 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
327
328 case BFD_RELOC_SPARC_GOT10:
329 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
330
331 case BFD_RELOC_SPARC_GOT13:
332 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
333
334 case BFD_RELOC_SPARC_GOT22:
335 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
336
337 case BFD_RELOC_SPARC_PC10:
338 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
339
340 case BFD_RELOC_SPARC_PC22:
341 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
342
343 case BFD_RELOC_SPARC_WPLT30:
344 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
345
346 case BFD_RELOC_SPARC_COPY:
347 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
348
349 case BFD_RELOC_SPARC_GLOB_DAT:
350 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
351
352 case BFD_RELOC_SPARC_JMP_SLOT:
353 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
354
355 case BFD_RELOC_SPARC_RELATIVE:
356 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
357
358 case BFD_RELOC_SPARC_UA32:
359 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
360
361 case BFD_RELOC_SPARC_PLT32:
362 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
363
364 case BFD_RELOC_SPARC_10:
365 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
366
367 case BFD_RELOC_SPARC_11:
368 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
369
370 case BFD_RELOC_SPARC_64:
371 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
372
373 case BFD_RELOC_SPARC_OLO10:
374 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
375
376 case BFD_RELOC_SPARC_HH22:
377 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
378
379 case BFD_RELOC_SPARC_HM10:
380 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
381
382 case BFD_RELOC_SPARC_LM22:
383 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
384
385 case BFD_RELOC_SPARC_PC_HH22:
386 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
387
388 case BFD_RELOC_SPARC_PC_HM10:
389 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
390
391 case BFD_RELOC_SPARC_PC_LM22:
392 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
393
394 case BFD_RELOC_SPARC_WDISP16:
395 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
396
397 case BFD_RELOC_SPARC_WDISP19:
398 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
399
400 case BFD_RELOC_SPARC_7:
401 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
402
403 case BFD_RELOC_SPARC_5:
404 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
405
406 case BFD_RELOC_SPARC_6:
407 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
408
409 case BFD_RELOC_SPARC_DISP64:
410 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
411
412 case BFD_RELOC_SPARC_PLT64:
413 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
414
415 case BFD_RELOC_SPARC_HIX22:
416 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
417
418 case BFD_RELOC_SPARC_LOX10:
419 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
420
421 case BFD_RELOC_SPARC_H44:
422 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
423
424 case BFD_RELOC_SPARC_M44:
425 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
426
427 case BFD_RELOC_SPARC_L44:
428 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
429
430 case BFD_RELOC_SPARC_REGISTER:
431 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
432
433 case BFD_RELOC_SPARC_UA64:
434 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
435
436 case BFD_RELOC_SPARC_UA16:
437 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
438
439 case BFD_RELOC_SPARC_TLS_GD_HI22:
440 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
441
442 case BFD_RELOC_SPARC_TLS_GD_LO10:
443 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
444
445 case BFD_RELOC_SPARC_TLS_GD_ADD:
446 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
447
448 case BFD_RELOC_SPARC_TLS_GD_CALL:
449 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
450
451 case BFD_RELOC_SPARC_TLS_LDM_HI22:
452 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
453
454 case BFD_RELOC_SPARC_TLS_LDM_LO10:
455 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
456
457 case BFD_RELOC_SPARC_TLS_LDM_ADD:
458 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
459
460 case BFD_RELOC_SPARC_TLS_LDM_CALL:
461 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
462
463 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
464 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
465
466 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
467 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
468
469 case BFD_RELOC_SPARC_TLS_LDO_ADD:
470 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
471
472 case BFD_RELOC_SPARC_TLS_IE_HI22:
473 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
474
475 case BFD_RELOC_SPARC_TLS_IE_LO10:
476 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
477
478 case BFD_RELOC_SPARC_TLS_IE_LD:
479 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
480
481 case BFD_RELOC_SPARC_TLS_IE_LDX:
482 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
483
484 case BFD_RELOC_SPARC_TLS_IE_ADD:
485 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
486
487 case BFD_RELOC_SPARC_TLS_LE_HIX22:
488 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
489
490 case BFD_RELOC_SPARC_TLS_LE_LOX10:
491 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
492
493 case BFD_RELOC_SPARC_TLS_DTPMOD32:
494 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
495
496 case BFD_RELOC_SPARC_TLS_DTPMOD64:
497 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
498
499 case BFD_RELOC_SPARC_TLS_DTPOFF32:
500 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
501
502 case BFD_RELOC_SPARC_TLS_DTPOFF64:
503 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
504
505 case BFD_RELOC_SPARC_TLS_TPOFF32:
506 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
507
508 case BFD_RELOC_SPARC_TLS_TPOFF64:
509 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
510
511 case BFD_RELOC_SPARC_GOTDATA_HIX22:
512 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
513
514 case BFD_RELOC_SPARC_GOTDATA_LOX10:
515 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
516
517 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
518 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
519
520 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
521 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
522
523 case BFD_RELOC_SPARC_GOTDATA_OP:
524 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
525
526 case BFD_RELOC_SPARC_JMP_IREL:
527 return &sparc_jmp_irel_howto;
528
529 case BFD_RELOC_SPARC_IRELATIVE:
530 return &sparc_irelative_howto;
531
532 case BFD_RELOC_VTABLE_INHERIT:
533 return &sparc_vtinherit_howto;
534
535 case BFD_RELOC_VTABLE_ENTRY:
536 return &sparc_vtentry_howto;
537
538 case BFD_RELOC_SPARC_REV32:
539 return &sparc_rev32_howto;
540
541 default:
542 break;
543 }
544 bfd_set_error (bfd_error_bad_value);
545 return NULL;
546 }
547
548 reloc_howto_type *
549 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
550 const char *r_name)
551 {
552 unsigned int i;
553
554 for (i = 0;
555 i < (sizeof (_bfd_sparc_elf_howto_table)
556 / sizeof (_bfd_sparc_elf_howto_table[0]));
557 i++)
558 if (_bfd_sparc_elf_howto_table[i].name != NULL
559 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
560 return &_bfd_sparc_elf_howto_table[i];
561
562 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
563 return &sparc_vtinherit_howto;
564 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
565 return &sparc_vtentry_howto;
566 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
567 return &sparc_rev32_howto;
568
569 return NULL;
570 }
571
572 reloc_howto_type *
573 _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type)
574 {
575 switch (r_type)
576 {
577 case R_SPARC_JMP_IREL:
578 return &sparc_jmp_irel_howto;
579
580 case R_SPARC_IRELATIVE:
581 return &sparc_irelative_howto;
582
583 case R_SPARC_GNU_VTINHERIT:
584 return &sparc_vtinherit_howto;
585
586 case R_SPARC_GNU_VTENTRY:
587 return &sparc_vtentry_howto;
588
589 case R_SPARC_REV32:
590 return &sparc_rev32_howto;
591
592 default:
593 if (r_type >= (unsigned int) R_SPARC_max_std)
594 {
595 (*_bfd_error_handler) (_("invalid relocation type %d"),
596 (int) r_type);
597 r_type = R_SPARC_NONE;
598 }
599 return &_bfd_sparc_elf_howto_table[r_type];
600 }
601 }
602
603 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
604 so just take advantage of that. */
605 #define SPARC_ELF_R_TYPE(r_info) \
606 ((r_info) & 0xff)
607
608 void
609 _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
610 Elf_Internal_Rela *dst)
611 {
612 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
613
614 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
615 }
616 \f
617
618 /* The nop opcode we use. */
619 #define SPARC_NOP 0x01000000
620
621 #define SPARC_INSN_BYTES 4
622
623 /* The SPARC linker needs to keep track of the number of relocs that it
624 decides to copy as dynamic relocs in check_relocs for each symbol.
625 This is so that it can later discard them if they are found to be
626 unnecessary. We store the information in a field extending the
627 regular ELF linker hash table. */
628
629 struct _bfd_sparc_elf_dyn_relocs
630 {
631 struct _bfd_sparc_elf_dyn_relocs *next;
632
633 /* The input section of the reloc. */
634 asection *sec;
635
636 /* Total number of relocs copied for the input section. */
637 bfd_size_type count;
638
639 /* Number of pc-relative relocs copied for the input section. */
640 bfd_size_type pc_count;
641 };
642
643 /* SPARC ELF linker hash entry. */
644
645 struct _bfd_sparc_elf_link_hash_entry
646 {
647 struct elf_link_hash_entry elf;
648
649 /* Track dynamic relocs copied for this symbol. */
650 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs;
651
652 #define GOT_UNKNOWN 0
653 #define GOT_NORMAL 1
654 #define GOT_TLS_GD 2
655 #define GOT_TLS_IE 3
656 unsigned char tls_type;
657 };
658
659 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
660
661 struct _bfd_sparc_elf_obj_tdata
662 {
663 struct elf_obj_tdata root;
664
665 /* tls_type for each local got entry. */
666 char *local_got_tls_type;
667
668 /* TRUE if TLS GD relocs has been seen for this object. */
669 bfd_boolean has_tlsgd;
670 };
671
672 #define _bfd_sparc_elf_tdata(abfd) \
673 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
674
675 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
676 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
677
678 #define is_sparc_elf(bfd) \
679 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
680 && elf_tdata (bfd) != NULL \
681 && elf_object_id (bfd) == SPARC_ELF_DATA)
682
683 bfd_boolean
684 _bfd_sparc_elf_mkobject (bfd *abfd)
685 {
686 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
687 SPARC_ELF_DATA);
688 }
689
690 static void
691 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
692 {
693 bfd_put_32 (abfd, val, ptr);
694 }
695
696 static void
697 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
698 {
699 bfd_put_64 (abfd, val, ptr);
700 }
701
702 static void
703 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
704 {
705 const struct elf_backend_data *bed;
706 bfd_byte *loc;
707
708 bed = get_elf_backend_data (abfd);
709 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
710 bed->s->swap_reloca_out (abfd, rel, loc);
711 }
712
713 static bfd_vma
714 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
715 bfd_vma rel_index ATTRIBUTE_UNUSED,
716 bfd_vma type ATTRIBUTE_UNUSED)
717 {
718 return ELF64_R_INFO (rel_index,
719 (in_rel ?
720 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
721 type) : type));
722 }
723
724 static bfd_vma
725 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
726 bfd_vma rel_index, bfd_vma type)
727 {
728 return ELF32_R_INFO (rel_index, type);
729 }
730
731 static bfd_vma
732 sparc_elf_r_symndx_64 (bfd_vma r_info)
733 {
734 bfd_vma r_symndx = ELF32_R_SYM (r_info);
735 return (r_symndx >> 24);
736 }
737
738 static bfd_vma
739 sparc_elf_r_symndx_32 (bfd_vma r_info)
740 {
741 return ELF32_R_SYM (r_info);
742 }
743
744 /* PLT/GOT stuff */
745
746 #define PLT32_ENTRY_SIZE 12
747 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
748
749 /* The first four entries in a 32-bit procedure linkage table are reserved,
750 and the initial contents are unimportant (we zero them out).
751 Subsequent entries look like this. See the SVR4 ABI SPARC
752 supplement to see how this works. */
753
754 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
755 #define PLT32_ENTRY_WORD0 0x03000000
756 /* b,a .plt0. We fill in the offset later. */
757 #define PLT32_ENTRY_WORD1 0x30800000
758 /* nop. */
759 #define PLT32_ENTRY_WORD2 SPARC_NOP
760
761 static int
762 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
763 bfd_vma max ATTRIBUTE_UNUSED,
764 bfd_vma *r_offset)
765 {
766 bfd_put_32 (output_bfd,
767 PLT32_ENTRY_WORD0 + offset,
768 splt->contents + offset);
769 bfd_put_32 (output_bfd,
770 (PLT32_ENTRY_WORD1
771 + (((- (offset + 4)) >> 2) & 0x3fffff)),
772 splt->contents + offset + 4);
773 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
774 splt->contents + offset + 8);
775
776 *r_offset = offset;
777
778 return offset / PLT32_ENTRY_SIZE - 4;
779 }
780
781 /* Both the headers and the entries are icache aligned. */
782 #define PLT64_ENTRY_SIZE 32
783 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
784 #define PLT64_LARGE_THRESHOLD 32768
785
786 static int
787 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
788 bfd_vma max, bfd_vma *r_offset)
789 {
790 unsigned char *entry = splt->contents + offset;
791 const unsigned int nop = SPARC_NOP;
792 int plt_index;
793
794 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
795 {
796 unsigned int sethi, ba;
797
798 *r_offset = offset;
799
800 plt_index = (offset / PLT64_ENTRY_SIZE);
801
802 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
803 ba = 0x30680000
804 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
805
806 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
807 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
808 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
809 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
810 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
811 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
812 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
813 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
814 }
815 else
816 {
817 unsigned char *ptr;
818 unsigned int ldx;
819 int block, last_block, ofs, last_ofs, chunks_this_block;
820 const int insn_chunk_size = (6 * 4);
821 const int ptr_chunk_size = (1 * 8);
822 const int entries_per_block = 160;
823 const int block_size = entries_per_block * (insn_chunk_size
824 + ptr_chunk_size);
825
826 /* Entries 32768 and higher are grouped into blocks of 160.
827 The blocks are further subdivided into 160 sequences of
828 6 instructions and 160 pointers. If a block does not require
829 the full 160 entries, let's say it requires N, then there
830 will be N sequences of 6 instructions and N pointers. */
831
832 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
833 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
834
835 block = offset / block_size;
836 last_block = max / block_size;
837 if (block != last_block)
838 {
839 chunks_this_block = 160;
840 }
841 else
842 {
843 last_ofs = max % block_size;
844 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
845 }
846
847 ofs = offset % block_size;
848
849 plt_index = (PLT64_LARGE_THRESHOLD +
850 (block * 160) +
851 (ofs / insn_chunk_size));
852
853 ptr = splt->contents
854 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
855 + (block * block_size)
856 + (chunks_this_block * insn_chunk_size)
857 + (ofs / insn_chunk_size) * ptr_chunk_size;
858
859 *r_offset = (bfd_vma) (ptr - splt->contents);
860
861 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
862
863 /* mov %o7,%g5
864 call .+8
865 nop
866 ldx [%o7+P],%g1
867 jmpl %o7+%g1,%g1
868 mov %g5,%o7 */
869 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
870 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
871 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
872 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
873 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
874 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
875
876 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
877 }
878
879 return plt_index - 4;
880 }
881
882 /* The format of the first PLT entry in a VxWorks executable. */
883 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
884 {
885 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
886 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
887 0xc4008000, /* ld [ %g2 ], %g2 */
888 0x81c08000, /* jmp %g2 */
889 0x01000000 /* nop */
890 };
891
892 /* The format of subsequent PLT entries. */
893 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
894 {
895 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
896 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
897 0xc2004000, /* ld [ %g1 ], %g1 */
898 0x81c04000, /* jmp %g1 */
899 0x01000000, /* nop */
900 0x03000000, /* sethi %hi(f@pltindex), %g1 */
901 0x10800000, /* b _PLT_resolve */
902 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
903 };
904
905 /* The format of the first PLT entry in a VxWorks shared object. */
906 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
907 {
908 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
909 0x81c08000, /* jmp %g2 */
910 0x01000000 /* nop */
911 };
912
913 /* The format of subsequent PLT entries. */
914 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
915 {
916 0x03000000, /* sethi %hi(f@got), %g1 */
917 0x82106000, /* or %g1, %lo(f@got), %g1 */
918 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
919 0x81c04000, /* jmp %g1 */
920 0x01000000, /* nop */
921 0x03000000, /* sethi %hi(f@pltindex), %g1 */
922 0x10800000, /* b _PLT_resolve */
923 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
924 };
925
926 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
927 htab->put_word(bfd, val, ptr)
928
929 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
930 htab->r_info(in_rel, index, type)
931
932 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
933 htab->r_symndx(r_info)
934
935 #define SPARC_ELF_WORD_BYTES(htab) \
936 htab->bytes_per_word
937
938 #define SPARC_ELF_RELA_BYTES(htab) \
939 htab->bytes_per_rela
940
941 #define SPARC_ELF_DTPOFF_RELOC(htab) \
942 htab->dtpoff_reloc
943
944 #define SPARC_ELF_DTPMOD_RELOC(htab) \
945 htab->dtpmod_reloc
946
947 #define SPARC_ELF_TPOFF_RELOC(htab) \
948 htab->tpoff_reloc
949
950 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
951 htab->build_plt_entry (obfd, splt, off, max, r_off)
952
953 /* Create an entry in an SPARC ELF linker hash table. */
954
955 static struct bfd_hash_entry *
956 link_hash_newfunc (struct bfd_hash_entry *entry,
957 struct bfd_hash_table *table, const char *string)
958 {
959 /* Allocate the structure if it has not already been allocated by a
960 subclass. */
961 if (entry == NULL)
962 {
963 entry = bfd_hash_allocate (table,
964 sizeof (struct _bfd_sparc_elf_link_hash_entry));
965 if (entry == NULL)
966 return entry;
967 }
968
969 /* Call the allocation method of the superclass. */
970 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
971 if (entry != NULL)
972 {
973 struct _bfd_sparc_elf_link_hash_entry *eh;
974
975 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
976 eh->dyn_relocs = NULL;
977 eh->tls_type = GOT_UNKNOWN;
978 }
979
980 return entry;
981 }
982
983 /* The name of the dynamic interpreter. This is put in the .interp
984 section. */
985
986 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
987 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
988
989 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
990 for local symbol so that we can handle local STT_GNU_IFUNC symbols
991 as global symbol. We reuse indx and dynstr_index for local symbol
992 hash since they aren't used by global symbols in this backend. */
993
994 static hashval_t
995 elf_sparc_local_htab_hash (const void *ptr)
996 {
997 struct elf_link_hash_entry *h
998 = (struct elf_link_hash_entry *) ptr;
999 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1000 }
1001
1002 /* Compare local hash entries. */
1003
1004 static int
1005 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1006 {
1007 struct elf_link_hash_entry *h1
1008 = (struct elf_link_hash_entry *) ptr1;
1009 struct elf_link_hash_entry *h2
1010 = (struct elf_link_hash_entry *) ptr2;
1011
1012 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1013 }
1014
1015 /* Find and/or create a hash entry for local symbol. */
1016
1017 static struct elf_link_hash_entry *
1018 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1019 bfd *abfd, const Elf_Internal_Rela *rel,
1020 bfd_boolean create)
1021 {
1022 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1023 asection *sec = abfd->sections;
1024 unsigned long r_symndx;
1025 hashval_t h;
1026 void **slot;
1027
1028 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1029 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1030
1031 e.elf.indx = sec->id;
1032 e.elf.dynstr_index = r_symndx;
1033 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1034 create ? INSERT : NO_INSERT);
1035
1036 if (!slot)
1037 return NULL;
1038
1039 if (*slot)
1040 {
1041 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1042 return &ret->elf;
1043 }
1044
1045 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1046 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1047 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1048 if (ret)
1049 {
1050 memset (ret, 0, sizeof (*ret));
1051 ret->elf.indx = sec->id;
1052 ret->elf.dynstr_index = r_symndx;
1053 ret->elf.dynindx = -1;
1054 ret->elf.plt.offset = (bfd_vma) -1;
1055 ret->elf.got.offset = (bfd_vma) -1;
1056 *slot = ret;
1057 }
1058 return &ret->elf;
1059 }
1060
1061 /* Create a SPARC ELF linker hash table. */
1062
1063 struct bfd_link_hash_table *
1064 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1065 {
1066 struct _bfd_sparc_elf_link_hash_table *ret;
1067 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1068
1069 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1070 if (ret == NULL)
1071 return NULL;
1072
1073 if (ABI_64_P (abfd))
1074 {
1075 ret->put_word = sparc_put_word_64;
1076 ret->r_info = sparc_elf_r_info_64;
1077 ret->r_symndx = sparc_elf_r_symndx_64;
1078 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1079 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1080 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1081 ret->word_align_power = 3;
1082 ret->align_power_max = 4;
1083 ret->bytes_per_word = 8;
1084 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1085 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1086 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1087
1088 ret->build_plt_entry = sparc64_plt_entry_build;
1089 ret->plt_header_size = PLT64_HEADER_SIZE;
1090 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1091 }
1092 else
1093 {
1094 ret->put_word = sparc_put_word_32;
1095 ret->r_info = sparc_elf_r_info_32;
1096 ret->r_symndx = sparc_elf_r_symndx_32;
1097 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1098 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1099 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1100 ret->word_align_power = 2;
1101 ret->align_power_max = 3;
1102 ret->bytes_per_word = 4;
1103 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1104 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1105 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1106
1107 ret->build_plt_entry = sparc32_plt_entry_build;
1108 ret->plt_header_size = PLT32_HEADER_SIZE;
1109 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1110 }
1111
1112 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1113 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1114 SPARC_ELF_DATA))
1115 {
1116 free (ret);
1117 return NULL;
1118 }
1119
1120 ret->loc_hash_table = htab_try_create (1024,
1121 elf_sparc_local_htab_hash,
1122 elf_sparc_local_htab_eq,
1123 NULL);
1124 ret->loc_hash_memory = objalloc_create ();
1125 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1126 {
1127 free (ret);
1128 return NULL;
1129 }
1130
1131 return &ret->elf.root;
1132 }
1133
1134 /* Destroy a SPARC ELF linker hash table. */
1135
1136 void
1137 _bfd_sparc_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
1138 {
1139 struct _bfd_sparc_elf_link_hash_table *htab
1140 = (struct _bfd_sparc_elf_link_hash_table *) hash;
1141
1142 if (htab->loc_hash_table)
1143 htab_delete (htab->loc_hash_table);
1144 if (htab->loc_hash_memory)
1145 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1146 _bfd_generic_link_hash_table_free (hash);
1147 }
1148
1149 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1150 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1151 hash table. */
1152
1153 bfd_boolean
1154 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1155 struct bfd_link_info *info)
1156 {
1157 struct _bfd_sparc_elf_link_hash_table *htab;
1158
1159 htab = _bfd_sparc_elf_hash_table (info);
1160 BFD_ASSERT (htab != NULL);
1161
1162 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1163 return FALSE;
1164
1165 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1166 if (!info->shared)
1167 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1168
1169 if (htab->is_vxworks)
1170 {
1171 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1172 return FALSE;
1173 if (info->shared)
1174 {
1175 htab->plt_header_size
1176 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1177 htab->plt_entry_size
1178 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1179 }
1180 else
1181 {
1182 htab->plt_header_size
1183 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1184 htab->plt_entry_size
1185 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1186 }
1187 }
1188
1189 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1190 || (!info->shared && !htab->srelbss))
1191 abort ();
1192
1193 return TRUE;
1194 }
1195
1196 static bfd_boolean
1197 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1198 {
1199 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1200 struct elf_link_hash_table *htab = elf_hash_table (info);
1201 flagword flags, pltflags;
1202 asection *s;
1203
1204 if (htab->irelifunc != NULL || htab->iplt != NULL)
1205 return TRUE;
1206
1207 flags = bed->dynamic_sec_flags;
1208 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1209
1210 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1211 if (s == NULL
1212 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1213 return FALSE;
1214 htab->iplt = s;
1215
1216 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1217 flags | SEC_READONLY);
1218 if (s == NULL
1219 || ! bfd_set_section_alignment (abfd, s,
1220 bed->s->log_file_align))
1221 return FALSE;
1222 htab->irelplt = s;
1223
1224 return TRUE;
1225 }
1226
1227 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1228
1229 void
1230 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1231 struct elf_link_hash_entry *dir,
1232 struct elf_link_hash_entry *ind)
1233 {
1234 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1235
1236 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1237 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1238
1239 if (eind->dyn_relocs != NULL)
1240 {
1241 if (edir->dyn_relocs != NULL)
1242 {
1243 struct _bfd_sparc_elf_dyn_relocs **pp;
1244 struct _bfd_sparc_elf_dyn_relocs *p;
1245
1246 /* Add reloc counts against the indirect sym to the direct sym
1247 list. Merge any entries against the same section. */
1248 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1249 {
1250 struct _bfd_sparc_elf_dyn_relocs *q;
1251
1252 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1253 if (q->sec == p->sec)
1254 {
1255 q->pc_count += p->pc_count;
1256 q->count += p->count;
1257 *pp = p->next;
1258 break;
1259 }
1260 if (q == NULL)
1261 pp = &p->next;
1262 }
1263 *pp = edir->dyn_relocs;
1264 }
1265
1266 edir->dyn_relocs = eind->dyn_relocs;
1267 eind->dyn_relocs = NULL;
1268 }
1269
1270 if (ind->root.type == bfd_link_hash_indirect
1271 && dir->got.refcount <= 0)
1272 {
1273 edir->tls_type = eind->tls_type;
1274 eind->tls_type = GOT_UNKNOWN;
1275 }
1276 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1277 }
1278
1279 static int
1280 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1281 int r_type, int is_local)
1282 {
1283 if (! ABI_64_P (abfd)
1284 && r_type == R_SPARC_TLS_GD_HI22
1285 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1286 r_type = R_SPARC_REV32;
1287
1288 if (info->shared)
1289 return r_type;
1290
1291 switch (r_type)
1292 {
1293 case R_SPARC_TLS_GD_HI22:
1294 if (is_local)
1295 return R_SPARC_TLS_LE_HIX22;
1296 return R_SPARC_TLS_IE_HI22;
1297 case R_SPARC_TLS_GD_LO10:
1298 if (is_local)
1299 return R_SPARC_TLS_LE_LOX10;
1300 return R_SPARC_TLS_IE_LO10;
1301 case R_SPARC_TLS_IE_HI22:
1302 if (is_local)
1303 return R_SPARC_TLS_LE_HIX22;
1304 return r_type;
1305 case R_SPARC_TLS_IE_LO10:
1306 if (is_local)
1307 return R_SPARC_TLS_LE_LOX10;
1308 return r_type;
1309 case R_SPARC_TLS_LDM_HI22:
1310 return R_SPARC_TLS_LE_HIX22;
1311 case R_SPARC_TLS_LDM_LO10:
1312 return R_SPARC_TLS_LE_LOX10;
1313 }
1314
1315 return r_type;
1316 }
1317 \f
1318 /* Look through the relocs for a section during the first phase, and
1319 allocate space in the global offset table or procedure linkage
1320 table. */
1321
1322 bfd_boolean
1323 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1324 asection *sec, const Elf_Internal_Rela *relocs)
1325 {
1326 struct _bfd_sparc_elf_link_hash_table *htab;
1327 Elf_Internal_Shdr *symtab_hdr;
1328 struct elf_link_hash_entry **sym_hashes;
1329 const Elf_Internal_Rela *rel;
1330 const Elf_Internal_Rela *rel_end;
1331 asection *sreloc;
1332 int num_relocs;
1333 bfd_boolean checked_tlsgd = FALSE;
1334
1335 if (info->relocatable)
1336 return TRUE;
1337
1338 htab = _bfd_sparc_elf_hash_table (info);
1339 BFD_ASSERT (htab != NULL);
1340 symtab_hdr = &elf_symtab_hdr (abfd);
1341 sym_hashes = elf_sym_hashes (abfd);
1342
1343 sreloc = NULL;
1344
1345 if (ABI_64_P (abfd))
1346 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1347 else
1348 num_relocs = sec->reloc_count;
1349
1350 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1351
1352 if (htab->elf.dynobj == NULL)
1353 htab->elf.dynobj = abfd;
1354 if (!create_ifunc_sections (htab->elf.dynobj, info))
1355 return FALSE;
1356
1357 rel_end = relocs + num_relocs;
1358 for (rel = relocs; rel < rel_end; rel++)
1359 {
1360 unsigned int r_type;
1361 unsigned long r_symndx;
1362 struct elf_link_hash_entry *h;
1363 Elf_Internal_Sym *isym;
1364
1365 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1366 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1367
1368 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1369 {
1370 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1371 abfd, r_symndx);
1372 return FALSE;
1373 }
1374
1375 isym = NULL;
1376 if (r_symndx < symtab_hdr->sh_info)
1377 {
1378 /* A local symbol. */
1379 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1380 abfd, r_symndx);
1381 if (isym == NULL)
1382 return FALSE;
1383
1384 /* Check relocation against local STT_GNU_IFUNC symbol. */
1385 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1386 {
1387 h = elf_sparc_get_local_sym_hash (htab, abfd, rel,
1388 TRUE);
1389 if (h == NULL)
1390 return FALSE;
1391
1392 /* Fake a STT_GNU_IFUNC symbol. */
1393 h->type = STT_GNU_IFUNC;
1394 h->def_regular = 1;
1395 h->ref_regular = 1;
1396 h->forced_local = 1;
1397 h->root.type = bfd_link_hash_defined;
1398 }
1399 else
1400 h = NULL;
1401 }
1402 else
1403 {
1404 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1405 while (h->root.type == bfd_link_hash_indirect
1406 || h->root.type == bfd_link_hash_warning)
1407 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1408 }
1409
1410 if (h && h->type == STT_GNU_IFUNC)
1411 {
1412 if (h->def_regular)
1413 {
1414 h->ref_regular = 1;
1415 h->plt.refcount += 1;
1416 }
1417 }
1418
1419 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1420 with R_SPARC_TLS_GD_HI22. */
1421 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1422 switch (r_type)
1423 {
1424 case R_SPARC_TLS_GD_HI22:
1425 {
1426 const Elf_Internal_Rela *relt;
1427
1428 for (relt = rel + 1; relt < rel_end; relt++)
1429 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1430 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1431 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1432 break;
1433 checked_tlsgd = TRUE;
1434 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1435 }
1436 break;
1437 case R_SPARC_TLS_GD_LO10:
1438 case R_SPARC_TLS_GD_ADD:
1439 case R_SPARC_TLS_GD_CALL:
1440 checked_tlsgd = TRUE;
1441 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE;
1442 break;
1443 }
1444
1445 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1446 switch (r_type)
1447 {
1448 case R_SPARC_TLS_LDM_HI22:
1449 case R_SPARC_TLS_LDM_LO10:
1450 htab->tls_ldm_got.refcount += 1;
1451 break;
1452
1453 case R_SPARC_TLS_LE_HIX22:
1454 case R_SPARC_TLS_LE_LOX10:
1455 if (info->shared)
1456 goto r_sparc_plt32;
1457 break;
1458
1459 case R_SPARC_TLS_IE_HI22:
1460 case R_SPARC_TLS_IE_LO10:
1461 if (info->shared)
1462 info->flags |= DF_STATIC_TLS;
1463 /* Fall through */
1464
1465 case R_SPARC_GOT10:
1466 case R_SPARC_GOT13:
1467 case R_SPARC_GOT22:
1468 case R_SPARC_GOTDATA_HIX22:
1469 case R_SPARC_GOTDATA_LOX10:
1470 case R_SPARC_GOTDATA_OP_HIX22:
1471 case R_SPARC_GOTDATA_OP_LOX10:
1472 case R_SPARC_TLS_GD_HI22:
1473 case R_SPARC_TLS_GD_LO10:
1474 /* This symbol requires a global offset table entry. */
1475 {
1476 int tls_type, old_tls_type;
1477
1478 switch (r_type)
1479 {
1480 default:
1481 case R_SPARC_GOT10:
1482 case R_SPARC_GOT13:
1483 case R_SPARC_GOT22:
1484 case R_SPARC_GOTDATA_OP_HIX22:
1485 case R_SPARC_GOTDATA_OP_LOX10:
1486 tls_type = GOT_NORMAL;
1487 break;
1488 case R_SPARC_TLS_GD_HI22:
1489 case R_SPARC_TLS_GD_LO10:
1490 tls_type = GOT_TLS_GD;
1491 break;
1492 case R_SPARC_TLS_IE_HI22:
1493 case R_SPARC_TLS_IE_LO10:
1494 tls_type = GOT_TLS_IE;
1495 break;
1496 }
1497
1498 if (h != NULL)
1499 {
1500 h->got.refcount += 1;
1501 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1502 }
1503 else
1504 {
1505 bfd_signed_vma *local_got_refcounts;
1506
1507 /* This is a global offset table entry for a local symbol. */
1508 local_got_refcounts = elf_local_got_refcounts (abfd);
1509 if (local_got_refcounts == NULL)
1510 {
1511 bfd_size_type size;
1512
1513 size = symtab_hdr->sh_info;
1514 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1515 local_got_refcounts = ((bfd_signed_vma *)
1516 bfd_zalloc (abfd, size));
1517 if (local_got_refcounts == NULL)
1518 return FALSE;
1519 elf_local_got_refcounts (abfd) = local_got_refcounts;
1520 _bfd_sparc_elf_local_got_tls_type (abfd)
1521 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1522 }
1523 switch (r_type)
1524 {
1525 case R_SPARC_GOTDATA_OP_HIX22:
1526 case R_SPARC_GOTDATA_OP_LOX10:
1527 break;
1528
1529 default:
1530 local_got_refcounts[r_symndx] += 1;
1531 break;
1532 }
1533 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1534 }
1535
1536 /* If a TLS symbol is accessed using IE at least once,
1537 there is no point to use dynamic model for it. */
1538 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1539 && (old_tls_type != GOT_TLS_GD
1540 || tls_type != GOT_TLS_IE))
1541 {
1542 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1543 tls_type = old_tls_type;
1544 else
1545 {
1546 (*_bfd_error_handler)
1547 (_("%B: `%s' accessed both as normal and thread local symbol"),
1548 abfd, h ? h->root.root.string : "<local>");
1549 return FALSE;
1550 }
1551 }
1552
1553 if (old_tls_type != tls_type)
1554 {
1555 if (h != NULL)
1556 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1557 else
1558 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1559 }
1560 }
1561
1562 if (htab->elf.sgot == NULL)
1563 {
1564 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1565 return FALSE;
1566 }
1567 break;
1568
1569 case R_SPARC_TLS_GD_CALL:
1570 case R_SPARC_TLS_LDM_CALL:
1571 if (info->shared)
1572 {
1573 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1574 __tls_get_addr. */
1575 struct bfd_link_hash_entry *bh = NULL;
1576 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1577 "__tls_get_addr", 0,
1578 bfd_und_section_ptr, 0,
1579 NULL, FALSE, FALSE,
1580 &bh))
1581 return FALSE;
1582 h = (struct elf_link_hash_entry *) bh;
1583 }
1584 else
1585 break;
1586 /* Fall through */
1587
1588 case R_SPARC_PLT32:
1589 case R_SPARC_WPLT30:
1590 case R_SPARC_HIPLT22:
1591 case R_SPARC_LOPLT10:
1592 case R_SPARC_PCPLT32:
1593 case R_SPARC_PCPLT22:
1594 case R_SPARC_PCPLT10:
1595 case R_SPARC_PLT64:
1596 /* This symbol requires a procedure linkage table entry. We
1597 actually build the entry in adjust_dynamic_symbol,
1598 because this might be a case of linking PIC code without
1599 linking in any dynamic objects, in which case we don't
1600 need to generate a procedure linkage table after all. */
1601
1602 if (h == NULL)
1603 {
1604 if (! ABI_64_P (abfd))
1605 {
1606 /* The Solaris native assembler will generate a WPLT30
1607 reloc for a local symbol if you assemble a call from
1608 one section to another when using -K pic. We treat
1609 it as WDISP30. */
1610 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1611 goto r_sparc_plt32;
1612 break;
1613 }
1614 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1615 else if (r_type == R_SPARC_WPLT30)
1616 break;
1617
1618 /* It does not make sense to have a procedure linkage
1619 table entry for a local symbol. */
1620 bfd_set_error (bfd_error_bad_value);
1621 return FALSE;
1622 }
1623
1624 h->needs_plt = 1;
1625
1626 {
1627 int this_r_type;
1628
1629 this_r_type = SPARC_ELF_R_TYPE (rel->r_info);
1630 if (this_r_type == R_SPARC_PLT32
1631 || this_r_type == R_SPARC_PLT64)
1632 goto r_sparc_plt32;
1633 }
1634 h->plt.refcount += 1;
1635 break;
1636
1637 case R_SPARC_PC10:
1638 case R_SPARC_PC22:
1639 case R_SPARC_PC_HH22:
1640 case R_SPARC_PC_HM10:
1641 case R_SPARC_PC_LM22:
1642 if (h != NULL)
1643 h->non_got_ref = 1;
1644
1645 if (h != NULL
1646 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1647 break;
1648 /* Fall through. */
1649
1650 case R_SPARC_DISP8:
1651 case R_SPARC_DISP16:
1652 case R_SPARC_DISP32:
1653 case R_SPARC_DISP64:
1654 case R_SPARC_WDISP30:
1655 case R_SPARC_WDISP22:
1656 case R_SPARC_WDISP19:
1657 case R_SPARC_WDISP16:
1658 case R_SPARC_8:
1659 case R_SPARC_16:
1660 case R_SPARC_32:
1661 case R_SPARC_HI22:
1662 case R_SPARC_22:
1663 case R_SPARC_13:
1664 case R_SPARC_LO10:
1665 case R_SPARC_UA16:
1666 case R_SPARC_UA32:
1667 case R_SPARC_10:
1668 case R_SPARC_11:
1669 case R_SPARC_64:
1670 case R_SPARC_OLO10:
1671 case R_SPARC_HH22:
1672 case R_SPARC_HM10:
1673 case R_SPARC_LM22:
1674 case R_SPARC_7:
1675 case R_SPARC_5:
1676 case R_SPARC_6:
1677 case R_SPARC_HIX22:
1678 case R_SPARC_LOX10:
1679 case R_SPARC_H44:
1680 case R_SPARC_M44:
1681 case R_SPARC_L44:
1682 case R_SPARC_UA64:
1683 if (h != NULL)
1684 h->non_got_ref = 1;
1685
1686 r_sparc_plt32:
1687 if (h != NULL && !info->shared)
1688 {
1689 /* We may need a .plt entry if the function this reloc
1690 refers to is in a shared lib. */
1691 h->plt.refcount += 1;
1692 }
1693
1694 /* If we are creating a shared library, and this is a reloc
1695 against a global symbol, or a non PC relative reloc
1696 against a local symbol, then we need to copy the reloc
1697 into the shared library. However, if we are linking with
1698 -Bsymbolic, we do not need to copy a reloc against a
1699 global symbol which is defined in an object we are
1700 including in the link (i.e., DEF_REGULAR is set). At
1701 this point we have not seen all the input files, so it is
1702 possible that DEF_REGULAR is not set now but will be set
1703 later (it is never cleared). In case of a weak definition,
1704 DEF_REGULAR may be cleared later by a strong definition in
1705 a shared library. We account for that possibility below by
1706 storing information in the relocs_copied field of the hash
1707 table entry. A similar situation occurs when creating
1708 shared libraries and symbol visibility changes render the
1709 symbol local.
1710
1711 If on the other hand, we are creating an executable, we
1712 may need to keep relocations for symbols satisfied by a
1713 dynamic library if we manage to avoid copy relocs for the
1714 symbol. */
1715 if ((info->shared
1716 && (sec->flags & SEC_ALLOC) != 0
1717 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1718 || (h != NULL
1719 && (! SYMBOLIC_BIND (info, h)
1720 || h->root.type == bfd_link_hash_defweak
1721 || !h->def_regular))))
1722 || (!info->shared
1723 && (sec->flags & SEC_ALLOC) != 0
1724 && h != NULL
1725 && (h->root.type == bfd_link_hash_defweak
1726 || !h->def_regular))
1727 || (!info->shared
1728 && h != NULL
1729 && h->type == STT_GNU_IFUNC))
1730 {
1731 struct _bfd_sparc_elf_dyn_relocs *p;
1732 struct _bfd_sparc_elf_dyn_relocs **head;
1733
1734 /* When creating a shared object, we must copy these
1735 relocs into the output file. We create a reloc
1736 section in dynobj and make room for the reloc. */
1737 if (sreloc == NULL)
1738 {
1739 sreloc = _bfd_elf_make_dynamic_reloc_section
1740 (sec, htab->elf.dynobj, htab->word_align_power,
1741 abfd, /*rela?*/ TRUE);
1742
1743 if (sreloc == NULL)
1744 return FALSE;
1745 }
1746
1747 /* If this is a global symbol, we count the number of
1748 relocations we need for this symbol. */
1749 if (h != NULL)
1750 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs;
1751 else
1752 {
1753 /* Track dynamic relocs needed for local syms too.
1754 We really need local syms available to do this
1755 easily. Oh well. */
1756 asection *s;
1757 void *vpp;
1758
1759 BFD_ASSERT (isym != NULL);
1760 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1761 if (s == NULL)
1762 s = sec;
1763
1764 vpp = &elf_section_data (s)->local_dynrel;
1765 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp;
1766 }
1767
1768 p = *head;
1769 if (p == NULL || p->sec != sec)
1770 {
1771 bfd_size_type amt = sizeof *p;
1772 p = ((struct _bfd_sparc_elf_dyn_relocs *)
1773 bfd_alloc (htab->elf.dynobj, amt));
1774 if (p == NULL)
1775 return FALSE;
1776 p->next = *head;
1777 *head = p;
1778 p->sec = sec;
1779 p->count = 0;
1780 p->pc_count = 0;
1781 }
1782
1783 p->count += 1;
1784 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1785 p->pc_count += 1;
1786 }
1787
1788 break;
1789
1790 case R_SPARC_GNU_VTINHERIT:
1791 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1792 return FALSE;
1793 break;
1794
1795 case R_SPARC_GNU_VTENTRY:
1796 BFD_ASSERT (h != NULL);
1797 if (h != NULL
1798 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1799 return FALSE;
1800 break;
1801
1802 case R_SPARC_REGISTER:
1803 /* Nothing to do. */
1804 break;
1805
1806 default:
1807 break;
1808 }
1809 }
1810
1811 return TRUE;
1812 }
1813 \f
1814 asection *
1815 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1816 struct bfd_link_info *info,
1817 Elf_Internal_Rela *rel,
1818 struct elf_link_hash_entry *h,
1819 Elf_Internal_Sym *sym)
1820 {
1821 if (h != NULL)
1822 switch (SPARC_ELF_R_TYPE (rel->r_info))
1823 {
1824 case R_SPARC_GNU_VTINHERIT:
1825 case R_SPARC_GNU_VTENTRY:
1826 return NULL;
1827 }
1828
1829 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1830 }
1831
1832 /* Update the got entry reference counts for the section being removed. */
1833 bfd_boolean
1834 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1835 asection *sec, const Elf_Internal_Rela *relocs)
1836 {
1837 struct _bfd_sparc_elf_link_hash_table *htab;
1838 Elf_Internal_Shdr *symtab_hdr;
1839 struct elf_link_hash_entry **sym_hashes;
1840 bfd_signed_vma *local_got_refcounts;
1841 const Elf_Internal_Rela *rel, *relend;
1842
1843 if (info->relocatable)
1844 return TRUE;
1845
1846 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0);
1847
1848 elf_section_data (sec)->local_dynrel = NULL;
1849
1850 htab = _bfd_sparc_elf_hash_table (info);
1851 BFD_ASSERT (htab != NULL);
1852 symtab_hdr = &elf_symtab_hdr (abfd);
1853 sym_hashes = elf_sym_hashes (abfd);
1854 local_got_refcounts = elf_local_got_refcounts (abfd);
1855
1856 relend = relocs + sec->reloc_count;
1857 for (rel = relocs; rel < relend; rel++)
1858 {
1859 unsigned long r_symndx;
1860 unsigned int r_type;
1861 struct elf_link_hash_entry *h = NULL;
1862
1863 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1864 if (r_symndx >= symtab_hdr->sh_info)
1865 {
1866 struct _bfd_sparc_elf_link_hash_entry *eh;
1867 struct _bfd_sparc_elf_dyn_relocs **pp;
1868 struct _bfd_sparc_elf_dyn_relocs *p;
1869
1870 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1871 while (h->root.type == bfd_link_hash_indirect
1872 || h->root.type == bfd_link_hash_warning)
1873 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1874 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1875 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1876 if (p->sec == sec)
1877 {
1878 /* Everything must go for SEC. */
1879 *pp = p->next;
1880 break;
1881 }
1882 }
1883
1884 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1885 r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL);
1886 switch (r_type)
1887 {
1888 case R_SPARC_TLS_LDM_HI22:
1889 case R_SPARC_TLS_LDM_LO10:
1890 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0)
1891 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
1892 break;
1893
1894 case R_SPARC_TLS_GD_HI22:
1895 case R_SPARC_TLS_GD_LO10:
1896 case R_SPARC_TLS_IE_HI22:
1897 case R_SPARC_TLS_IE_LO10:
1898 case R_SPARC_GOT10:
1899 case R_SPARC_GOT13:
1900 case R_SPARC_GOT22:
1901 case R_SPARC_GOTDATA_HIX22:
1902 case R_SPARC_GOTDATA_LOX10:
1903 case R_SPARC_GOTDATA_OP_HIX22:
1904 case R_SPARC_GOTDATA_OP_LOX10:
1905 if (h != NULL)
1906 {
1907 if (h->got.refcount > 0)
1908 h->got.refcount--;
1909 }
1910 else
1911 {
1912 switch (r_type)
1913 {
1914 case R_SPARC_GOTDATA_OP_HIX22:
1915 case R_SPARC_GOTDATA_OP_LOX10:
1916 break;
1917
1918 default:
1919 if (local_got_refcounts[r_symndx] > 0)
1920 local_got_refcounts[r_symndx]--;
1921 break;
1922 }
1923 }
1924 break;
1925
1926 case R_SPARC_PC10:
1927 case R_SPARC_PC22:
1928 case R_SPARC_PC_HH22:
1929 case R_SPARC_PC_HM10:
1930 case R_SPARC_PC_LM22:
1931 if (h != NULL
1932 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1933 break;
1934 /* Fall through. */
1935
1936 case R_SPARC_DISP8:
1937 case R_SPARC_DISP16:
1938 case R_SPARC_DISP32:
1939 case R_SPARC_DISP64:
1940 case R_SPARC_WDISP30:
1941 case R_SPARC_WDISP22:
1942 case R_SPARC_WDISP19:
1943 case R_SPARC_WDISP16:
1944 case R_SPARC_8:
1945 case R_SPARC_16:
1946 case R_SPARC_32:
1947 case R_SPARC_HI22:
1948 case R_SPARC_22:
1949 case R_SPARC_13:
1950 case R_SPARC_LO10:
1951 case R_SPARC_UA16:
1952 case R_SPARC_UA32:
1953 case R_SPARC_PLT32:
1954 case R_SPARC_10:
1955 case R_SPARC_11:
1956 case R_SPARC_64:
1957 case R_SPARC_OLO10:
1958 case R_SPARC_HH22:
1959 case R_SPARC_HM10:
1960 case R_SPARC_LM22:
1961 case R_SPARC_7:
1962 case R_SPARC_5:
1963 case R_SPARC_6:
1964 case R_SPARC_HIX22:
1965 case R_SPARC_LOX10:
1966 case R_SPARC_H44:
1967 case R_SPARC_M44:
1968 case R_SPARC_L44:
1969 case R_SPARC_UA64:
1970 if (info->shared)
1971 break;
1972 /* Fall through. */
1973
1974 case R_SPARC_WPLT30:
1975 if (h != NULL)
1976 {
1977 if (h->plt.refcount > 0)
1978 h->plt.refcount--;
1979 }
1980 break;
1981
1982 default:
1983 break;
1984 }
1985 }
1986
1987 return TRUE;
1988 }
1989
1990 /* Adjust a symbol defined by a dynamic object and referenced by a
1991 regular object. The current definition is in some section of the
1992 dynamic object, but we're not including those sections. We have to
1993 change the definition to something the rest of the link can
1994 understand. */
1995
1996 bfd_boolean
1997 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1998 struct elf_link_hash_entry *h)
1999 {
2000 struct _bfd_sparc_elf_link_hash_table *htab;
2001 struct _bfd_sparc_elf_link_hash_entry * eh;
2002 struct _bfd_sparc_elf_dyn_relocs *p;
2003 asection *s;
2004
2005 htab = _bfd_sparc_elf_hash_table (info);
2006 BFD_ASSERT (htab != NULL);
2007
2008 /* Make sure we know what is going on here. */
2009 BFD_ASSERT (htab->elf.dynobj != NULL
2010 && (h->needs_plt
2011 || h->type == STT_GNU_IFUNC
2012 || h->u.weakdef != NULL
2013 || (h->def_dynamic
2014 && h->ref_regular
2015 && !h->def_regular)));
2016
2017 /* If this is a function, put it in the procedure linkage table. We
2018 will fill in the contents of the procedure linkage table later
2019 (although we could actually do it here). The STT_NOTYPE
2020 condition is a hack specifically for the Oracle libraries
2021 delivered for Solaris; for some inexplicable reason, they define
2022 some of their functions as STT_NOTYPE when they really should be
2023 STT_FUNC. */
2024 if (h->type == STT_FUNC
2025 || h->type == STT_GNU_IFUNC
2026 || h->needs_plt
2027 || (h->type == STT_NOTYPE
2028 && (h->root.type == bfd_link_hash_defined
2029 || h->root.type == bfd_link_hash_defweak)
2030 && (h->root.u.def.section->flags & SEC_CODE) != 0))
2031 {
2032 if (h->plt.refcount <= 0
2033 || (h->type != STT_GNU_IFUNC
2034 && (SYMBOL_CALLS_LOCAL (info, h)
2035 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2036 && h->root.type == bfd_link_hash_undefweak))))
2037 {
2038 /* This case can occur if we saw a WPLT30 reloc in an input
2039 file, but the symbol was never referred to by a dynamic
2040 object, or if all references were garbage collected. In
2041 such a case, we don't actually need to build a procedure
2042 linkage table, and we can just do a WDISP30 reloc instead. */
2043 h->plt.offset = (bfd_vma) -1;
2044 h->needs_plt = 0;
2045 }
2046
2047 return TRUE;
2048 }
2049 else
2050 h->plt.offset = (bfd_vma) -1;
2051
2052 /* If this is a weak symbol, and there is a real definition, the
2053 processor independent code will have arranged for us to see the
2054 real definition first, and we can just use the same value. */
2055 if (h->u.weakdef != NULL)
2056 {
2057 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2058 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2059 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2060 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2061 return TRUE;
2062 }
2063
2064 /* This is a reference to a symbol defined by a dynamic object which
2065 is not a function. */
2066
2067 /* If we are creating a shared library, we must presume that the
2068 only references to the symbol are via the global offset table.
2069 For such cases we need not do anything here; the relocations will
2070 be handled correctly by relocate_section. */
2071 if (info->shared)
2072 return TRUE;
2073
2074 /* If there are no references to this symbol that do not use the
2075 GOT, we don't need to generate a copy reloc. */
2076 if (!h->non_got_ref)
2077 return TRUE;
2078
2079 /* If -z nocopyreloc was given, we won't generate them either. */
2080 if (info->nocopyreloc)
2081 {
2082 h->non_got_ref = 0;
2083 return TRUE;
2084 }
2085
2086 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2087 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2088 {
2089 s = p->sec->output_section;
2090 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2091 break;
2092 }
2093
2094 /* If we didn't find any dynamic relocs in read-only sections, then
2095 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2096 if (p == NULL)
2097 {
2098 h->non_got_ref = 0;
2099 return TRUE;
2100 }
2101
2102 if (h->size == 0)
2103 {
2104 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2105 h->root.root.string);
2106 return TRUE;
2107 }
2108
2109 /* We must allocate the symbol in our .dynbss section, which will
2110 become part of the .bss section of the executable. There will be
2111 an entry for this symbol in the .dynsym section. The dynamic
2112 object will contain position independent code, so all references
2113 from the dynamic object to this symbol will go through the global
2114 offset table. The dynamic linker will use the .dynsym entry to
2115 determine the address it must put in the global offset table, so
2116 both the dynamic object and the regular object will refer to the
2117 same memory location for the variable. */
2118
2119 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2120 to copy the initial value out of the dynamic object and into the
2121 runtime process image. We need to remember the offset into the
2122 .rel.bss section we are going to use. */
2123 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2124 {
2125 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab);
2126 h->needs_copy = 1;
2127 }
2128
2129 s = htab->sdynbss;
2130
2131 return _bfd_elf_adjust_dynamic_copy (h, s);
2132 }
2133
2134 /* Allocate space in .plt, .got and associated reloc sections for
2135 dynamic relocs. */
2136
2137 static bfd_boolean
2138 allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
2139 {
2140 struct bfd_link_info *info;
2141 struct _bfd_sparc_elf_link_hash_table *htab;
2142 struct _bfd_sparc_elf_link_hash_entry *eh;
2143 struct _bfd_sparc_elf_dyn_relocs *p;
2144
2145 if (h->root.type == bfd_link_hash_indirect)
2146 return TRUE;
2147
2148 if (h->root.type == bfd_link_hash_warning)
2149 /* When warning symbols are created, they **replace** the "real"
2150 entry in the hash table, thus we never get to see the real
2151 symbol in a hash traversal. So look at it now. */
2152 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2153
2154 info = (struct bfd_link_info *) inf;
2155 htab = _bfd_sparc_elf_hash_table (info);
2156 BFD_ASSERT (htab != NULL);
2157
2158 if ((htab->elf.dynamic_sections_created
2159 && h->plt.refcount > 0)
2160 || (h->type == STT_GNU_IFUNC
2161 && h->def_regular
2162 && h->ref_regular))
2163 {
2164 /* Make sure this symbol is output as a dynamic symbol.
2165 Undefined weak syms won't yet be marked as dynamic. */
2166 if (h->dynindx == -1
2167 && !h->forced_local)
2168 {
2169 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2170 return FALSE;
2171 }
2172
2173 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)
2174 || (h->type == STT_GNU_IFUNC
2175 && h->def_regular))
2176 {
2177 asection *s = htab->elf.splt;
2178
2179 if (s == NULL)
2180 s = htab->elf.iplt;
2181
2182 /* Allocate room for the header. */
2183 if (s->size == 0)
2184 {
2185 s->size = htab->plt_header_size;
2186
2187 /* Allocate space for the .rela.plt.unloaded relocations. */
2188 if (htab->is_vxworks && !info->shared)
2189 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2190 }
2191
2192 /* The procedure linkage table size is bounded by the magnitude
2193 of the offset we can describe in the entry. */
2194 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2195 (((bfd_vma)1 << 31) << 1) : 0x400000))
2196 {
2197 bfd_set_error (bfd_error_bad_value);
2198 return FALSE;
2199 }
2200
2201 if (SPARC_ELF_WORD_BYTES(htab) == 8
2202 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2203 {
2204 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2205
2206
2207 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2208
2209 h->plt.offset = (s->size - (off * 8));
2210 }
2211 else
2212 h->plt.offset = s->size;
2213
2214 /* If this symbol is not defined in a regular file, and we are
2215 not generating a shared library, then set the symbol to this
2216 location in the .plt. This is required to make function
2217 pointers compare as equal between the normal executable and
2218 the shared library. */
2219 if (! info->shared
2220 && !h->def_regular)
2221 {
2222 h->root.u.def.section = s;
2223 h->root.u.def.value = h->plt.offset;
2224 }
2225
2226 /* Make room for this entry. */
2227 s->size += htab->plt_entry_size;
2228
2229 /* We also need to make an entry in the .rela.plt section. */
2230 if (s == htab->elf.splt)
2231 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2232 else
2233 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2234
2235 if (htab->is_vxworks)
2236 {
2237 /* Allocate space for the .got.plt entry. */
2238 htab->elf.sgotplt->size += 4;
2239
2240 /* ...and for the .rela.plt.unloaded relocations. */
2241 if (!info->shared)
2242 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2243 }
2244 }
2245 else
2246 {
2247 h->plt.offset = (bfd_vma) -1;
2248 h->needs_plt = 0;
2249 }
2250 }
2251 else
2252 {
2253 h->plt.offset = (bfd_vma) -1;
2254 h->needs_plt = 0;
2255 }
2256
2257 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2258 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2259 if (h->got.refcount > 0
2260 && !info->shared
2261 && h->dynindx == -1
2262 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2263 h->got.offset = (bfd_vma) -1;
2264 else if (h->got.refcount > 0)
2265 {
2266 asection *s;
2267 bfd_boolean dyn;
2268 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2269
2270 /* Make sure this symbol is output as a dynamic symbol.
2271 Undefined weak syms won't yet be marked as dynamic. */
2272 if (h->dynindx == -1
2273 && !h->forced_local)
2274 {
2275 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2276 return FALSE;
2277 }
2278
2279 s = htab->elf.sgot;
2280 h->got.offset = s->size;
2281 s->size += SPARC_ELF_WORD_BYTES (htab);
2282 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2283 if (tls_type == GOT_TLS_GD)
2284 s->size += SPARC_ELF_WORD_BYTES (htab);
2285 dyn = htab->elf.dynamic_sections_created;
2286 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2287 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
2288 global. */
2289 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2290 || tls_type == GOT_TLS_IE
2291 || h->type == STT_GNU_IFUNC)
2292 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2293 else if (tls_type == GOT_TLS_GD)
2294 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2295 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2296 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2297 }
2298 else
2299 h->got.offset = (bfd_vma) -1;
2300
2301 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2302 if (eh->dyn_relocs == NULL)
2303 return TRUE;
2304
2305 /* In the shared -Bsymbolic case, discard space allocated for
2306 dynamic pc-relative relocs against symbols which turn out to be
2307 defined in regular objects. For the normal shared case, discard
2308 space for pc-relative relocs that have become local due to symbol
2309 visibility changes. */
2310
2311 if (info->shared)
2312 {
2313 if (SYMBOL_CALLS_LOCAL (info, h))
2314 {
2315 struct _bfd_sparc_elf_dyn_relocs **pp;
2316
2317 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2318 {
2319 p->count -= p->pc_count;
2320 p->pc_count = 0;
2321 if (p->count == 0)
2322 *pp = p->next;
2323 else
2324 pp = &p->next;
2325 }
2326 }
2327
2328 if (htab->is_vxworks)
2329 {
2330 struct _bfd_sparc_elf_dyn_relocs **pp;
2331
2332 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2333 {
2334 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2335 *pp = p->next;
2336 else
2337 pp = &p->next;
2338 }
2339 }
2340
2341 /* Also discard relocs on undefined weak syms with non-default
2342 visibility. */
2343 if (eh->dyn_relocs != NULL
2344 && h->root.type == bfd_link_hash_undefweak)
2345 {
2346 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2347 eh->dyn_relocs = NULL;
2348
2349 /* Make sure undefined weak symbols are output as a dynamic
2350 symbol in PIEs. */
2351 else if (h->dynindx == -1
2352 && !h->forced_local)
2353 {
2354 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2355 return FALSE;
2356 }
2357 }
2358 }
2359 else
2360 {
2361 /* For the non-shared case, discard space for relocs against
2362 symbols which turn out to need copy relocs or are not
2363 dynamic. */
2364
2365 if (!h->non_got_ref
2366 && ((h->def_dynamic
2367 && !h->def_regular)
2368 || (htab->elf.dynamic_sections_created
2369 && (h->root.type == bfd_link_hash_undefweak
2370 || h->root.type == bfd_link_hash_undefined))))
2371 {
2372 /* Make sure this symbol is output as a dynamic symbol.
2373 Undefined weak syms won't yet be marked as dynamic. */
2374 if (h->dynindx == -1
2375 && !h->forced_local)
2376 {
2377 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2378 return FALSE;
2379 }
2380
2381 /* If that succeeded, we know we'll be keeping all the
2382 relocs. */
2383 if (h->dynindx != -1)
2384 goto keep;
2385 }
2386
2387 eh->dyn_relocs = NULL;
2388
2389 keep: ;
2390 }
2391
2392 /* Finally, allocate space. */
2393 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2394 {
2395 asection *sreloc = elf_section_data (p->sec)->sreloc;
2396 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2397 }
2398
2399 return TRUE;
2400 }
2401
2402 /* Allocate space in .plt, .got and associated reloc sections for
2403 local dynamic relocs. */
2404
2405 static bfd_boolean
2406 allocate_local_dynrelocs (void **slot, void *inf)
2407 {
2408 struct elf_link_hash_entry *h
2409 = (struct elf_link_hash_entry *) *slot;
2410
2411 if (h->type != STT_GNU_IFUNC
2412 || !h->def_regular
2413 || !h->ref_regular
2414 || !h->forced_local
2415 || h->root.type != bfd_link_hash_defined)
2416 abort ();
2417
2418 return allocate_dynrelocs (h, inf);
2419 }
2420
2421 /* Find any dynamic relocs that apply to read-only sections. */
2422
2423 static bfd_boolean
2424 readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
2425 {
2426 struct _bfd_sparc_elf_link_hash_entry *eh;
2427 struct _bfd_sparc_elf_dyn_relocs *p;
2428
2429 if (h->root.type == bfd_link_hash_warning)
2430 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2431
2432 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2433 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2434 {
2435 asection *s = p->sec->output_section;
2436
2437 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2438 {
2439 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2440
2441 info->flags |= DF_TEXTREL;
2442
2443 /* Not an error, just cut short the traversal. */
2444 return FALSE;
2445 }
2446 }
2447 return TRUE;
2448 }
2449
2450 /* Return true if the dynamic symbol for a given section should be
2451 omitted when creating a shared library. */
2452
2453 bfd_boolean
2454 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2455 struct bfd_link_info *info,
2456 asection *p)
2457 {
2458 /* We keep the .got section symbol so that explicit relocations
2459 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2460 can be turned into relocations against the .got symbol. */
2461 if (strcmp (p->name, ".got") == 0)
2462 return FALSE;
2463
2464 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2465 }
2466
2467 /* Set the sizes of the dynamic sections. */
2468
2469 bfd_boolean
2470 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2471 struct bfd_link_info *info)
2472 {
2473 struct _bfd_sparc_elf_link_hash_table *htab;
2474 bfd *dynobj;
2475 asection *s;
2476 bfd *ibfd;
2477
2478 htab = _bfd_sparc_elf_hash_table (info);
2479 BFD_ASSERT (htab != NULL);
2480 dynobj = htab->elf.dynobj;
2481 BFD_ASSERT (dynobj != NULL);
2482
2483 if (elf_hash_table (info)->dynamic_sections_created)
2484 {
2485 /* Set the contents of the .interp section to the interpreter. */
2486 if (info->executable)
2487 {
2488 s = bfd_get_section_by_name (dynobj, ".interp");
2489 BFD_ASSERT (s != NULL);
2490 s->size = htab->dynamic_interpreter_size;
2491 s->contents = (unsigned char *) htab->dynamic_interpreter;
2492 }
2493 }
2494
2495 /* Set up .got offsets for local syms, and space for local dynamic
2496 relocs. */
2497 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2498 {
2499 bfd_signed_vma *local_got;
2500 bfd_signed_vma *end_local_got;
2501 char *local_tls_type;
2502 bfd_size_type locsymcount;
2503 Elf_Internal_Shdr *symtab_hdr;
2504 asection *srel;
2505
2506 if (! is_sparc_elf (ibfd))
2507 continue;
2508
2509 for (s = ibfd->sections; s != NULL; s = s->next)
2510 {
2511 struct _bfd_sparc_elf_dyn_relocs *p;
2512
2513 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2514 {
2515 if (!bfd_is_abs_section (p->sec)
2516 && bfd_is_abs_section (p->sec->output_section))
2517 {
2518 /* Input section has been discarded, either because
2519 it is a copy of a linkonce section or due to
2520 linker script /DISCARD/, so we'll be discarding
2521 the relocs too. */
2522 }
2523 else if (htab->is_vxworks
2524 && strcmp (p->sec->output_section->name,
2525 ".tls_vars") == 0)
2526 {
2527 /* Relocations in vxworks .tls_vars sections are
2528 handled specially by the loader. */
2529 }
2530 else if (p->count != 0)
2531 {
2532 srel = elf_section_data (p->sec)->sreloc;
2533 if (!htab->elf.dynamic_sections_created)
2534 srel = htab->elf.irelplt;
2535 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2536 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2537 info->flags |= DF_TEXTREL;
2538 }
2539 }
2540 }
2541
2542 local_got = elf_local_got_refcounts (ibfd);
2543 if (!local_got)
2544 continue;
2545
2546 symtab_hdr = &elf_symtab_hdr (ibfd);
2547 locsymcount = symtab_hdr->sh_info;
2548 end_local_got = local_got + locsymcount;
2549 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2550 s = htab->elf.sgot;
2551 srel = htab->elf.srelgot;
2552 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2553 {
2554 if (*local_got > 0)
2555 {
2556 *local_got = s->size;
2557 s->size += SPARC_ELF_WORD_BYTES (htab);
2558 if (*local_tls_type == GOT_TLS_GD)
2559 s->size += SPARC_ELF_WORD_BYTES (htab);
2560 if (info->shared
2561 || *local_tls_type == GOT_TLS_GD
2562 || *local_tls_type == GOT_TLS_IE)
2563 srel->size += SPARC_ELF_RELA_BYTES (htab);
2564 }
2565 else
2566 *local_got = (bfd_vma) -1;
2567 }
2568 }
2569
2570 if (htab->tls_ldm_got.refcount > 0)
2571 {
2572 /* Allocate 2 got entries and 1 dynamic reloc for
2573 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2574 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2575 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2576 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2577 }
2578 else
2579 htab->tls_ldm_got.offset = -1;
2580
2581 /* Allocate global sym .plt and .got entries, and space for global
2582 sym dynamic relocs. */
2583 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2584
2585 /* Allocate .plt and .got entries, and space for local symbols. */
2586 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2587
2588 if (! ABI_64_P (output_bfd)
2589 && !htab->is_vxworks
2590 && elf_hash_table (info)->dynamic_sections_created)
2591 {
2592 /* Make space for the trailing nop in .plt. */
2593 if (htab->elf.splt->size > 0)
2594 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2595
2596 /* If the .got section is more than 0x1000 bytes, we add
2597 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2598 bit relocations have a greater chance of working.
2599
2600 FIXME: Make this optimization work for 64-bit too. */
2601 if (htab->elf.sgot->size >= 0x1000
2602 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2603 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2604 }
2605
2606 /* The check_relocs and adjust_dynamic_symbol entry points have
2607 determined the sizes of the various dynamic sections. Allocate
2608 memory for them. */
2609 for (s = dynobj->sections; s != NULL; s = s->next)
2610 {
2611 if ((s->flags & SEC_LINKER_CREATED) == 0)
2612 continue;
2613
2614 if (s == htab->elf.splt
2615 || s == htab->elf.sgot
2616 || s == htab->sdynbss
2617 || s == htab->elf.iplt
2618 || s == htab->elf.sgotplt)
2619 {
2620 /* Strip this section if we don't need it; see the
2621 comment below. */
2622 }
2623 else if (CONST_STRNEQ (s->name, ".rela"))
2624 {
2625 if (s->size != 0)
2626 {
2627 /* We use the reloc_count field as a counter if we need
2628 to copy relocs into the output file. */
2629 s->reloc_count = 0;
2630 }
2631 }
2632 else
2633 {
2634 /* It's not one of our sections. */
2635 continue;
2636 }
2637
2638 if (s->size == 0)
2639 {
2640 /* If we don't need this section, strip it from the
2641 output file. This is mostly to handle .rela.bss and
2642 .rela.plt. We must create both sections in
2643 create_dynamic_sections, because they must be created
2644 before the linker maps input sections to output
2645 sections. The linker does that before
2646 adjust_dynamic_symbol is called, and it is that
2647 function which decides whether anything needs to go
2648 into these sections. */
2649 s->flags |= SEC_EXCLUDE;
2650 continue;
2651 }
2652
2653 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2654 continue;
2655
2656 /* Allocate memory for the section contents. Zero the memory
2657 for the benefit of .rela.plt, which has 4 unused entries
2658 at the beginning, and we don't want garbage. */
2659 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2660 if (s->contents == NULL)
2661 return FALSE;
2662 }
2663
2664 if (elf_hash_table (info)->dynamic_sections_created)
2665 {
2666 /* Add some entries to the .dynamic section. We fill in the
2667 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2668 must add the entries now so that we get the correct size for
2669 the .dynamic section. The DT_DEBUG entry is filled in by the
2670 dynamic linker and used by the debugger. */
2671 #define add_dynamic_entry(TAG, VAL) \
2672 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2673
2674 if (info->executable)
2675 {
2676 if (!add_dynamic_entry (DT_DEBUG, 0))
2677 return FALSE;
2678 }
2679
2680 if (htab->elf.srelplt->size != 0)
2681 {
2682 if (!add_dynamic_entry (DT_PLTGOT, 0)
2683 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2684 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2685 || !add_dynamic_entry (DT_JMPREL, 0))
2686 return FALSE;
2687 }
2688
2689 if (!add_dynamic_entry (DT_RELA, 0)
2690 || !add_dynamic_entry (DT_RELASZ, 0)
2691 || !add_dynamic_entry (DT_RELAENT,
2692 SPARC_ELF_RELA_BYTES (htab)))
2693 return FALSE;
2694
2695 /* If any dynamic relocs apply to a read-only section,
2696 then we need a DT_TEXTREL entry. */
2697 if ((info->flags & DF_TEXTREL) == 0)
2698 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2699 (PTR) info);
2700
2701 if (info->flags & DF_TEXTREL)
2702 {
2703 if (!add_dynamic_entry (DT_TEXTREL, 0))
2704 return FALSE;
2705 }
2706
2707 if (ABI_64_P (output_bfd))
2708 {
2709 int reg;
2710 struct _bfd_sparc_elf_app_reg * app_regs;
2711 struct elf_strtab_hash *dynstr;
2712 struct elf_link_hash_table *eht = elf_hash_table (info);
2713
2714 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2715 entries if needed. */
2716 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2717 dynstr = eht->dynstr;
2718
2719 for (reg = 0; reg < 4; reg++)
2720 if (app_regs [reg].name != NULL)
2721 {
2722 struct elf_link_local_dynamic_entry *entry, *e;
2723
2724 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2725 return FALSE;
2726
2727 entry = (struct elf_link_local_dynamic_entry *)
2728 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2729 if (entry == NULL)
2730 return FALSE;
2731
2732 /* We cheat here a little bit: the symbol will not be local, so we
2733 put it at the end of the dynlocal linked list. We will fix it
2734 later on, as we have to fix other fields anyway. */
2735 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2736 entry->isym.st_size = 0;
2737 if (*app_regs [reg].name != '\0')
2738 entry->isym.st_name
2739 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE);
2740 else
2741 entry->isym.st_name = 0;
2742 entry->isym.st_other = 0;
2743 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2744 STT_REGISTER);
2745 entry->isym.st_shndx = app_regs [reg].shndx;
2746 entry->next = NULL;
2747 entry->input_bfd = output_bfd;
2748 entry->input_indx = -1;
2749
2750 if (eht->dynlocal == NULL)
2751 eht->dynlocal = entry;
2752 else
2753 {
2754 for (e = eht->dynlocal; e->next; e = e->next)
2755 ;
2756 e->next = entry;
2757 }
2758 eht->dynsymcount++;
2759 }
2760 }
2761 if (htab->is_vxworks
2762 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2763 return FALSE;
2764 }
2765 #undef add_dynamic_entry
2766
2767 return TRUE;
2768 }
2769 \f
2770 bfd_boolean
2771 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2772 {
2773 if (!sec->used_by_bfd)
2774 {
2775 struct _bfd_sparc_elf_section_data *sdata;
2776 bfd_size_type amt = sizeof (*sdata);
2777
2778 sdata = bfd_zalloc (abfd, amt);
2779 if (sdata == NULL)
2780 return FALSE;
2781 sec->used_by_bfd = sdata;
2782 }
2783
2784 return _bfd_elf_new_section_hook (abfd, sec);
2785 }
2786
2787 bfd_boolean
2788 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2789 struct bfd_section *section,
2790 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2791 bfd_boolean *again)
2792 {
2793 if (link_info->relocatable)
2794 (*link_info->callbacks->einfo)
2795 (_("%P%F: --relax and -r may not be used together\n"));
2796
2797 *again = FALSE;
2798 sec_do_relax (section) = 1;
2799 return TRUE;
2800 }
2801 \f
2802 /* Return the base VMA address which should be subtracted from real addresses
2803 when resolving @dtpoff relocation.
2804 This is PT_TLS segment p_vaddr. */
2805
2806 static bfd_vma
2807 dtpoff_base (struct bfd_link_info *info)
2808 {
2809 /* If tls_sec is NULL, we should have signalled an error already. */
2810 if (elf_hash_table (info)->tls_sec == NULL)
2811 return 0;
2812 return elf_hash_table (info)->tls_sec->vma;
2813 }
2814
2815 /* Return the relocation value for @tpoff relocation
2816 if STT_TLS virtual address is ADDRESS. */
2817
2818 static bfd_vma
2819 tpoff (struct bfd_link_info *info, bfd_vma address)
2820 {
2821 struct elf_link_hash_table *htab = elf_hash_table (info);
2822 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2823 bfd_vma static_tls_size;
2824
2825 /* If tls_sec is NULL, we should have signalled an error already. */
2826 if (htab->tls_sec == NULL)
2827 return 0;
2828
2829 /* Consider special static TLS alignment requirements. */
2830 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2831 return address - static_tls_size - htab->tls_sec->vma;
2832 }
2833
2834 /* Return the relocation value for a %gdop relocation. */
2835
2836 static bfd_vma
2837 gdopoff (struct bfd_link_info *info, bfd_vma address)
2838 {
2839 struct elf_link_hash_table *htab = elf_hash_table (info);
2840 bfd_vma got_base;
2841
2842 got_base = (htab->hgot->root.u.def.value
2843 + htab->hgot->root.u.def.section->output_offset
2844 + htab->hgot->root.u.def.section->output_section->vma);
2845
2846 return address - got_base;
2847 }
2848
2849 /* Relocate a SPARC ELF section. */
2850
2851 bfd_boolean
2852 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2853 struct bfd_link_info *info,
2854 bfd *input_bfd,
2855 asection *input_section,
2856 bfd_byte *contents,
2857 Elf_Internal_Rela *relocs,
2858 Elf_Internal_Sym *local_syms,
2859 asection **local_sections)
2860 {
2861 struct _bfd_sparc_elf_link_hash_table *htab;
2862 Elf_Internal_Shdr *symtab_hdr;
2863 struct elf_link_hash_entry **sym_hashes;
2864 bfd_vma *local_got_offsets;
2865 bfd_vma got_base;
2866 asection *sreloc;
2867 Elf_Internal_Rela *rel;
2868 Elf_Internal_Rela *relend;
2869 int num_relocs;
2870 bfd_boolean is_vxworks_tls;
2871
2872 htab = _bfd_sparc_elf_hash_table (info);
2873 BFD_ASSERT (htab != NULL);
2874 symtab_hdr = &elf_symtab_hdr (input_bfd);
2875 sym_hashes = elf_sym_hashes (input_bfd);
2876 local_got_offsets = elf_local_got_offsets (input_bfd);
2877
2878 if (elf_hash_table (info)->hgot == NULL)
2879 got_base = 0;
2880 else
2881 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2882
2883 sreloc = elf_section_data (input_section)->sreloc;
2884 /* We have to handle relocations in vxworks .tls_vars sections
2885 specially, because the dynamic loader is 'weird'. */
2886 is_vxworks_tls = (htab->is_vxworks && info->shared
2887 && !strcmp (input_section->output_section->name,
2888 ".tls_vars"));
2889
2890 rel = relocs;
2891 if (ABI_64_P (output_bfd))
2892 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2893 else
2894 num_relocs = input_section->reloc_count;
2895 relend = relocs + num_relocs;
2896 for (; rel < relend; rel++)
2897 {
2898 int r_type, tls_type;
2899 reloc_howto_type *howto;
2900 unsigned long r_symndx;
2901 struct elf_link_hash_entry *h;
2902 Elf_Internal_Sym *sym;
2903 asection *sec;
2904 bfd_vma relocation, off;
2905 bfd_reloc_status_type r;
2906 bfd_boolean is_plt = FALSE;
2907 bfd_boolean unresolved_reloc;
2908
2909 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2910 if (r_type == R_SPARC_GNU_VTINHERIT
2911 || r_type == R_SPARC_GNU_VTENTRY)
2912 continue;
2913
2914 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2915 {
2916 bfd_set_error (bfd_error_bad_value);
2917 return FALSE;
2918 }
2919 howto = _bfd_sparc_elf_howto_table + r_type;
2920
2921 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2922 h = NULL;
2923 sym = NULL;
2924 sec = NULL;
2925 unresolved_reloc = FALSE;
2926 if (r_symndx < symtab_hdr->sh_info)
2927 {
2928 sym = local_syms + r_symndx;
2929 sec = local_sections[r_symndx];
2930 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2931
2932 if (!info->relocatable
2933 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2934 {
2935 /* Relocate against local STT_GNU_IFUNC symbol. */
2936 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
2937 rel, FALSE);
2938 if (h == NULL)
2939 abort ();
2940
2941 /* Set STT_GNU_IFUNC symbol value. */
2942 h->root.u.def.value = sym->st_value;
2943 h->root.u.def.section = sec;
2944 }
2945 }
2946 else
2947 {
2948 bfd_boolean warned;
2949
2950 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2951 r_symndx, symtab_hdr, sym_hashes,
2952 h, sec, relocation,
2953 unresolved_reloc, warned);
2954 if (warned)
2955 {
2956 /* To avoid generating warning messages about truncated
2957 relocations, set the relocation's address to be the same as
2958 the start of this section. */
2959 if (input_section->output_section != NULL)
2960 relocation = input_section->output_section->vma;
2961 else
2962 relocation = 0;
2963 }
2964 }
2965
2966 if (sec != NULL && elf_discarded_section (sec))
2967 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2968 rel, relend, howto, contents);
2969
2970 if (info->relocatable)
2971 continue;
2972
2973 if (h != NULL
2974 && h->type == STT_GNU_IFUNC
2975 && h->def_regular)
2976 {
2977 asection *plt_sec;
2978 const char *name;
2979
2980 if ((input_section->flags & SEC_ALLOC) == 0
2981 || h->plt.offset == (bfd_vma) -1)
2982 abort ();
2983
2984 plt_sec = htab->elf.splt;
2985 if (! plt_sec)
2986 plt_sec =htab->elf.iplt;
2987
2988 switch (r_type)
2989 {
2990 case R_SPARC_GOTDATA_OP:
2991 continue;
2992
2993 case R_SPARC_GOTDATA_OP_HIX22:
2994 case R_SPARC_GOTDATA_OP_LOX10:
2995 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
2996 ? R_SPARC_GOT22
2997 : R_SPARC_GOT10);
2998 howto = _bfd_sparc_elf_howto_table + r_type;
2999 /* Fall through. */
3000
3001 case R_SPARC_GOT10:
3002 case R_SPARC_GOT13:
3003 case R_SPARC_GOT22:
3004 if (htab->elf.sgot == NULL)
3005 abort ();
3006 off = h->got.offset;
3007 if (off == (bfd_vma) -1)
3008 abort();
3009 relocation = htab->elf.sgot->output_offset + off - got_base;
3010 goto do_relocation;
3011
3012 case R_SPARC_WPLT30:
3013 case R_SPARC_WDISP30:
3014 relocation = (plt_sec->output_section->vma
3015 + plt_sec->output_offset + h->plt.offset);
3016 goto do_relocation;
3017
3018 case R_SPARC_32:
3019 case R_SPARC_64:
3020 if (info->shared && h->non_got_ref)
3021 {
3022 Elf_Internal_Rela outrel;
3023 bfd_vma offset;
3024
3025 offset = _bfd_elf_section_offset (output_bfd, info,
3026 input_section,
3027 rel->r_offset);
3028 if (offset == (bfd_vma) -1
3029 || offset == (bfd_vma) -2)
3030 abort();
3031
3032 outrel.r_offset = (input_section->output_section->vma
3033 + input_section->output_offset
3034 + offset);
3035
3036 if (h->dynindx == -1
3037 || h->forced_local
3038 || info->executable)
3039 {
3040 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3041 0, R_SPARC_IRELATIVE);
3042 outrel.r_addend = relocation + rel->r_addend;
3043 }
3044 else
3045 {
3046 if (h->dynindx == -1)
3047 abort();
3048 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3049 outrel.r_addend = rel->r_addend;
3050 }
3051
3052 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3053 continue;
3054 }
3055
3056 relocation = (plt_sec->output_section->vma
3057 + plt_sec->output_offset + h->plt.offset);
3058 goto do_relocation;
3059
3060 case R_SPARC_HI22:
3061 case R_SPARC_LO10:
3062 /* We should only see such relocs in static links. */
3063 if (info->shared)
3064 abort();
3065 relocation = (plt_sec->output_section->vma
3066 + plt_sec->output_offset + h->plt.offset);
3067 goto do_relocation;
3068
3069 default:
3070 if (h->root.root.string)
3071 name = h->root.root.string;
3072 else
3073 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3074 NULL);
3075 (*_bfd_error_handler)
3076 (_("%B: relocation %s against STT_GNU_IFUNC "
3077 "symbol `%s' isn't handled by %s"), input_bfd,
3078 _bfd_sparc_elf_howto_table[r_type].name,
3079 name, __FUNCTION__);
3080 bfd_set_error (bfd_error_bad_value);
3081 return FALSE;
3082 }
3083 }
3084
3085 switch (r_type)
3086 {
3087 case R_SPARC_GOTDATA_OP_HIX22:
3088 case R_SPARC_GOTDATA_OP_LOX10:
3089 if (SYMBOL_REFERENCES_LOCAL (info, h))
3090 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3091 ? R_SPARC_GOTDATA_HIX22
3092 : R_SPARC_GOTDATA_LOX10);
3093 else
3094 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3095 ? R_SPARC_GOT22
3096 : R_SPARC_GOT10);
3097 howto = _bfd_sparc_elf_howto_table + r_type;
3098 break;
3099
3100 case R_SPARC_GOTDATA_OP:
3101 if (SYMBOL_REFERENCES_LOCAL (info, h))
3102 {
3103 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3104
3105 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3106 relocation = 0x80000000 | (insn & 0x3e07c01f);
3107 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3108 }
3109 continue;
3110 }
3111
3112 switch (r_type)
3113 {
3114 case R_SPARC_GOTDATA_HIX22:
3115 case R_SPARC_GOTDATA_LOX10:
3116 relocation = gdopoff (info, relocation);
3117 break;
3118
3119 case R_SPARC_GOT10:
3120 case R_SPARC_GOT13:
3121 case R_SPARC_GOT22:
3122 /* Relocation is to the entry for this symbol in the global
3123 offset table. */
3124 if (htab->elf.sgot == NULL)
3125 abort ();
3126
3127 if (h != NULL)
3128 {
3129 bfd_boolean dyn;
3130
3131 off = h->got.offset;
3132 BFD_ASSERT (off != (bfd_vma) -1);
3133 dyn = elf_hash_table (info)->dynamic_sections_created;
3134
3135 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3136 || (info->shared
3137 && SYMBOL_REFERENCES_LOCAL (info, h)))
3138 {
3139 /* This is actually a static link, or it is a
3140 -Bsymbolic link and the symbol is defined
3141 locally, or the symbol was forced to be local
3142 because of a version file. We must initialize
3143 this entry in the global offset table. Since the
3144 offset must always be a multiple of 8 for 64-bit
3145 and 4 for 32-bit, we use the least significant bit
3146 to record whether we have initialized it already.
3147
3148 When doing a dynamic link, we create a .rela.got
3149 relocation entry to initialize the value. This
3150 is done in the finish_dynamic_symbol routine. */
3151 if ((off & 1) != 0)
3152 off &= ~1;
3153 else
3154 {
3155 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3156 htab->elf.sgot->contents + off);
3157 h->got.offset |= 1;
3158 }
3159 }
3160 else
3161 unresolved_reloc = FALSE;
3162 }
3163 else
3164 {
3165 BFD_ASSERT (local_got_offsets != NULL
3166 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3167
3168 off = local_got_offsets[r_symndx];
3169
3170 /* The offset must always be a multiple of 8 on 64-bit and
3171 4 on 32-bit. We use the least significant bit to record
3172 whether we have already processed this entry. */
3173 if ((off & 1) != 0)
3174 off &= ~1;
3175 else
3176 {
3177
3178 if (info->shared)
3179 {
3180 asection *s;
3181 Elf_Internal_Rela outrel;
3182
3183 /* We need to generate a R_SPARC_RELATIVE reloc
3184 for the dynamic linker. */
3185 s = htab->elf.srelgot;
3186 BFD_ASSERT (s != NULL);
3187
3188 outrel.r_offset = (htab->elf.sgot->output_section->vma
3189 + htab->elf.sgot->output_offset
3190 + off);
3191 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3192 0, R_SPARC_RELATIVE);
3193 outrel.r_addend = relocation;
3194 relocation = 0;
3195 sparc_elf_append_rela (output_bfd, s, &outrel);
3196 }
3197
3198 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3199 htab->elf.sgot->contents + off);
3200 local_got_offsets[r_symndx] |= 1;
3201 }
3202 }
3203 relocation = htab->elf.sgot->output_offset + off - got_base;
3204 break;
3205
3206 case R_SPARC_PLT32:
3207 case R_SPARC_PLT64:
3208 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3209 {
3210 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3211 goto r_sparc_plt32;
3212 }
3213 /* Fall through. */
3214
3215 case R_SPARC_WPLT30:
3216 case R_SPARC_HIPLT22:
3217 case R_SPARC_LOPLT10:
3218 case R_SPARC_PCPLT32:
3219 case R_SPARC_PCPLT22:
3220 case R_SPARC_PCPLT10:
3221 r_sparc_wplt30:
3222 /* Relocation is to the entry for this symbol in the
3223 procedure linkage table. */
3224
3225 if (! ABI_64_P (output_bfd))
3226 {
3227 /* The Solaris native assembler will generate a WPLT30 reloc
3228 for a local symbol if you assemble a call from one
3229 section to another when using -K pic. We treat it as
3230 WDISP30. */
3231 if (h == NULL)
3232 break;
3233 }
3234 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3235 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3236 break;
3237 else
3238 {
3239 BFD_ASSERT (h != NULL);
3240 }
3241
3242 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3243 {
3244 /* We didn't make a PLT entry for this symbol. This
3245 happens when statically linking PIC code, or when
3246 using -Bsymbolic. */
3247 break;
3248 }
3249
3250 relocation = (htab->elf.splt->output_section->vma
3251 + htab->elf.splt->output_offset
3252 + h->plt.offset);
3253 unresolved_reloc = FALSE;
3254 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3255 {
3256 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3257 is_plt = TRUE;
3258 goto r_sparc_plt32;
3259 }
3260 break;
3261
3262 case R_SPARC_PC10:
3263 case R_SPARC_PC22:
3264 case R_SPARC_PC_HH22:
3265 case R_SPARC_PC_HM10:
3266 case R_SPARC_PC_LM22:
3267 if (h != NULL
3268 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3269 break;
3270 /* Fall through. */
3271 case R_SPARC_DISP8:
3272 case R_SPARC_DISP16:
3273 case R_SPARC_DISP32:
3274 case R_SPARC_DISP64:
3275 case R_SPARC_WDISP30:
3276 case R_SPARC_WDISP22:
3277 case R_SPARC_WDISP19:
3278 case R_SPARC_WDISP16:
3279 case R_SPARC_8:
3280 case R_SPARC_16:
3281 case R_SPARC_32:
3282 case R_SPARC_HI22:
3283 case R_SPARC_22:
3284 case R_SPARC_13:
3285 case R_SPARC_LO10:
3286 case R_SPARC_UA16:
3287 case R_SPARC_UA32:
3288 case R_SPARC_10:
3289 case R_SPARC_11:
3290 case R_SPARC_64:
3291 case R_SPARC_OLO10:
3292 case R_SPARC_HH22:
3293 case R_SPARC_HM10:
3294 case R_SPARC_LM22:
3295 case R_SPARC_7:
3296 case R_SPARC_5:
3297 case R_SPARC_6:
3298 case R_SPARC_HIX22:
3299 case R_SPARC_LOX10:
3300 case R_SPARC_H44:
3301 case R_SPARC_M44:
3302 case R_SPARC_L44:
3303 case R_SPARC_UA64:
3304 r_sparc_plt32:
3305 if ((input_section->flags & SEC_ALLOC) == 0
3306 || is_vxworks_tls)
3307 break;
3308
3309 if ((info->shared
3310 && (h == NULL
3311 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3312 || h->root.type != bfd_link_hash_undefweak)
3313 && (! howto->pc_relative
3314 || !SYMBOL_CALLS_LOCAL (info, h)))
3315 || (!info->shared
3316 && h != NULL
3317 && h->dynindx != -1
3318 && !h->non_got_ref
3319 && ((h->def_dynamic
3320 && !h->def_regular)
3321 || h->root.type == bfd_link_hash_undefweak
3322 || h->root.type == bfd_link_hash_undefined)))
3323 {
3324 Elf_Internal_Rela outrel;
3325 bfd_boolean skip, relocate = FALSE;
3326
3327 /* When generating a shared object, these relocations
3328 are copied into the output file to be resolved at run
3329 time. */
3330
3331 BFD_ASSERT (sreloc != NULL);
3332
3333 skip = FALSE;
3334
3335 outrel.r_offset =
3336 _bfd_elf_section_offset (output_bfd, info, input_section,
3337 rel->r_offset);
3338 if (outrel.r_offset == (bfd_vma) -1)
3339 skip = TRUE;
3340 else if (outrel.r_offset == (bfd_vma) -2)
3341 skip = TRUE, relocate = TRUE;
3342 outrel.r_offset += (input_section->output_section->vma
3343 + input_section->output_offset);
3344
3345 /* Optimize unaligned reloc usage now that we know where
3346 it finally resides. */
3347 switch (r_type)
3348 {
3349 case R_SPARC_16:
3350 if (outrel.r_offset & 1)
3351 r_type = R_SPARC_UA16;
3352 break;
3353 case R_SPARC_UA16:
3354 if (!(outrel.r_offset & 1))
3355 r_type = R_SPARC_16;
3356 break;
3357 case R_SPARC_32:
3358 if (outrel.r_offset & 3)
3359 r_type = R_SPARC_UA32;
3360 break;
3361 case R_SPARC_UA32:
3362 if (!(outrel.r_offset & 3))
3363 r_type = R_SPARC_32;
3364 break;
3365 case R_SPARC_64:
3366 if (outrel.r_offset & 7)
3367 r_type = R_SPARC_UA64;
3368 break;
3369 case R_SPARC_UA64:
3370 if (!(outrel.r_offset & 7))
3371 r_type = R_SPARC_64;
3372 break;
3373 case R_SPARC_DISP8:
3374 case R_SPARC_DISP16:
3375 case R_SPARC_DISP32:
3376 case R_SPARC_DISP64:
3377 /* If the symbol is not dynamic, we should not keep
3378 a dynamic relocation. But an .rela.* slot has been
3379 allocated for it, output R_SPARC_NONE.
3380 FIXME: Add code tracking needed dynamic relocs as
3381 e.g. i386 has. */
3382 if (h->dynindx == -1)
3383 skip = TRUE, relocate = TRUE;
3384 break;
3385 }
3386
3387 if (skip)
3388 memset (&outrel, 0, sizeof outrel);
3389 /* h->dynindx may be -1 if the symbol was marked to
3390 become local. */
3391 else if (h != NULL &&
3392 h->dynindx != -1
3393 && (! is_plt
3394 || !info->shared
3395 || !SYMBOLIC_BIND (info, h)
3396 || !h->def_regular))
3397 {
3398 BFD_ASSERT (h->dynindx != -1);
3399 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3400 outrel.r_addend = rel->r_addend;
3401 }
3402 else
3403 {
3404 if (r_type == R_SPARC_32 || r_type == R_SPARC_64)
3405 {
3406 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3407 0, R_SPARC_RELATIVE);
3408 outrel.r_addend = relocation + rel->r_addend;
3409 }
3410 else
3411 {
3412 long indx;
3413
3414 outrel.r_addend = relocation + rel->r_addend;
3415
3416 if (is_plt)
3417 sec = htab->elf.splt;
3418
3419 if (bfd_is_abs_section (sec))
3420 indx = 0;
3421 else if (sec == NULL || sec->owner == NULL)
3422 {
3423 bfd_set_error (bfd_error_bad_value);
3424 return FALSE;
3425 }
3426 else
3427 {
3428 asection *osec;
3429
3430 /* We are turning this relocation into one
3431 against a section symbol. It would be
3432 proper to subtract the symbol's value,
3433 osec->vma, from the emitted reloc addend,
3434 but ld.so expects buggy relocs. */
3435 osec = sec->output_section;
3436 indx = elf_section_data (osec)->dynindx;
3437
3438 if (indx == 0)
3439 {
3440 osec = htab->elf.text_index_section;
3441 indx = elf_section_data (osec)->dynindx;
3442 }
3443
3444 /* FIXME: we really should be able to link non-pic
3445 shared libraries. */
3446 if (indx == 0)
3447 {
3448 BFD_FAIL ();
3449 (*_bfd_error_handler)
3450 (_("%B: probably compiled without -fPIC?"),
3451 input_bfd);
3452 bfd_set_error (bfd_error_bad_value);
3453 return FALSE;
3454 }
3455 }
3456
3457 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3458 r_type);
3459 }
3460 }
3461
3462 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3463
3464 /* This reloc will be computed at runtime, so there's no
3465 need to do anything now. */
3466 if (! relocate)
3467 continue;
3468 }
3469 break;
3470
3471 case R_SPARC_TLS_GD_HI22:
3472 if (! ABI_64_P (input_bfd)
3473 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd)
3474 {
3475 /* R_SPARC_REV32 used the same reloc number as
3476 R_SPARC_TLS_GD_HI22. */
3477 r_type = R_SPARC_REV32;
3478 break;
3479 }
3480 /* Fall through */
3481
3482 case R_SPARC_TLS_GD_LO10:
3483 case R_SPARC_TLS_IE_HI22:
3484 case R_SPARC_TLS_IE_LO10:
3485 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL);
3486 tls_type = GOT_UNKNOWN;
3487 if (h == NULL && local_got_offsets)
3488 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3489 else if (h != NULL)
3490 {
3491 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3492 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3493 switch (SPARC_ELF_R_TYPE (rel->r_info))
3494 {
3495 case R_SPARC_TLS_GD_HI22:
3496 case R_SPARC_TLS_IE_HI22:
3497 r_type = R_SPARC_TLS_LE_HIX22;
3498 break;
3499 default:
3500 r_type = R_SPARC_TLS_LE_LOX10;
3501 break;
3502 }
3503 }
3504 if (tls_type == GOT_TLS_IE)
3505 switch (r_type)
3506 {
3507 case R_SPARC_TLS_GD_HI22:
3508 r_type = R_SPARC_TLS_IE_HI22;
3509 break;
3510 case R_SPARC_TLS_GD_LO10:
3511 r_type = R_SPARC_TLS_IE_LO10;
3512 break;
3513 }
3514
3515 if (r_type == R_SPARC_TLS_LE_HIX22)
3516 {
3517 relocation = tpoff (info, relocation);
3518 break;
3519 }
3520 if (r_type == R_SPARC_TLS_LE_LOX10)
3521 {
3522 /* Change add into xor. */
3523 relocation = tpoff (info, relocation);
3524 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3525 contents + rel->r_offset)
3526 | 0x80182000), contents + rel->r_offset);
3527 break;
3528 }
3529
3530 if (h != NULL)
3531 {
3532 off = h->got.offset;
3533 h->got.offset |= 1;
3534 }
3535 else
3536 {
3537 BFD_ASSERT (local_got_offsets != NULL);
3538 off = local_got_offsets[r_symndx];
3539 local_got_offsets[r_symndx] |= 1;
3540 }
3541
3542 r_sparc_tlsldm:
3543 if (htab->elf.sgot == NULL)
3544 abort ();
3545
3546 if ((off & 1) != 0)
3547 off &= ~1;
3548 else
3549 {
3550 Elf_Internal_Rela outrel;
3551 int dr_type, indx;
3552
3553 if (htab->elf.srelgot == NULL)
3554 abort ();
3555
3556 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3557 htab->elf.sgot->contents + off);
3558 outrel.r_offset = (htab->elf.sgot->output_section->vma
3559 + htab->elf.sgot->output_offset + off);
3560 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3561 if (r_type == R_SPARC_TLS_IE_HI22
3562 || r_type == R_SPARC_TLS_IE_LO10)
3563 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3564 else
3565 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3566 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3567 outrel.r_addend = relocation - dtpoff_base (info);
3568 else
3569 outrel.r_addend = 0;
3570 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3571 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3572
3573 if (r_type == R_SPARC_TLS_GD_HI22
3574 || r_type == R_SPARC_TLS_GD_LO10)
3575 {
3576 if (indx == 0)
3577 {
3578 BFD_ASSERT (! unresolved_reloc);
3579 SPARC_ELF_PUT_WORD (htab, output_bfd,
3580 relocation - dtpoff_base (info),
3581 (htab->elf.sgot->contents + off
3582 + SPARC_ELF_WORD_BYTES (htab)));
3583 }
3584 else
3585 {
3586 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3587 (htab->elf.sgot->contents + off
3588 + SPARC_ELF_WORD_BYTES (htab)));
3589 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3590 SPARC_ELF_DTPOFF_RELOC (htab));
3591 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3592 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3593 &outrel);
3594 }
3595 }
3596 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3597 {
3598 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3599 (htab->elf.sgot->contents + off
3600 + SPARC_ELF_WORD_BYTES (htab)));
3601 }
3602 }
3603
3604 if (off >= (bfd_vma) -2)
3605 abort ();
3606
3607 relocation = htab->elf.sgot->output_offset + off - got_base;
3608 unresolved_reloc = FALSE;
3609 howto = _bfd_sparc_elf_howto_table + r_type;
3610 break;
3611
3612 case R_SPARC_TLS_LDM_HI22:
3613 case R_SPARC_TLS_LDM_LO10:
3614 if (! info->shared)
3615 {
3616 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3617 continue;
3618 }
3619 off = htab->tls_ldm_got.offset;
3620 htab->tls_ldm_got.offset |= 1;
3621 goto r_sparc_tlsldm;
3622
3623 case R_SPARC_TLS_LDO_HIX22:
3624 case R_SPARC_TLS_LDO_LOX10:
3625 if (info->shared)
3626 {
3627 relocation -= dtpoff_base (info);
3628 break;
3629 }
3630
3631 r_type = (r_type == R_SPARC_TLS_LDO_HIX22
3632 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10);
3633 /* Fall through. */
3634
3635 case R_SPARC_TLS_LE_HIX22:
3636 case R_SPARC_TLS_LE_LOX10:
3637 if (info->shared)
3638 {
3639 Elf_Internal_Rela outrel;
3640 bfd_boolean skip;
3641
3642 BFD_ASSERT (sreloc != NULL);
3643 skip = FALSE;
3644 outrel.r_offset =
3645 _bfd_elf_section_offset (output_bfd, info, input_section,
3646 rel->r_offset);
3647 if (outrel.r_offset == (bfd_vma) -1)
3648 skip = TRUE;
3649 else if (outrel.r_offset == (bfd_vma) -2)
3650 skip = TRUE;
3651 outrel.r_offset += (input_section->output_section->vma
3652 + input_section->output_offset);
3653 if (skip)
3654 memset (&outrel, 0, sizeof outrel);
3655 else
3656 {
3657 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3658 outrel.r_addend = relocation - dtpoff_base (info)
3659 + rel->r_addend;
3660 }
3661
3662 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3663 continue;
3664 }
3665 relocation = tpoff (info, relocation);
3666 break;
3667
3668 case R_SPARC_TLS_LDM_CALL:
3669 if (! info->shared)
3670 {
3671 /* mov %g0, %o0 */
3672 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3673 continue;
3674 }
3675 /* Fall through */
3676
3677 case R_SPARC_TLS_GD_CALL:
3678 tls_type = GOT_UNKNOWN;
3679 if (h == NULL && local_got_offsets)
3680 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3681 else if (h != NULL)
3682 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3683 if (! info->shared
3684 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3685 {
3686 bfd_vma insn;
3687
3688 if (!info->shared && (h == NULL || h->dynindx == -1))
3689 {
3690 /* GD -> LE */
3691 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3692 continue;
3693 }
3694
3695 /* GD -> IE */
3696 if (rel + 1 < relend
3697 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3698 && rel[1].r_offset == rel->r_offset + 4
3699 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3700 && (((insn = bfd_get_32 (input_bfd,
3701 contents + rel[1].r_offset))
3702 >> 25) & 0x1f) == 8)
3703 {
3704 /* We have
3705 call __tls_get_addr, %tgd_call(foo)
3706 add %reg1, %reg2, %o0, %tgd_add(foo)
3707 and change it into IE:
3708 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3709 add %g7, %o0, %o0, %tie_add(foo).
3710 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3711 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3712 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3713 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3714 contents + rel->r_offset);
3715 bfd_put_32 (output_bfd, 0x9001c008,
3716 contents + rel->r_offset + 4);
3717 rel++;
3718 continue;
3719 }
3720
3721 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
3722 continue;
3723 }
3724
3725 h = (struct elf_link_hash_entry *)
3726 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3727 FALSE, TRUE);
3728 BFD_ASSERT (h != NULL);
3729 r_type = R_SPARC_WPLT30;
3730 howto = _bfd_sparc_elf_howto_table + r_type;
3731 goto r_sparc_wplt30;
3732
3733 case R_SPARC_TLS_GD_ADD:
3734 tls_type = GOT_UNKNOWN;
3735 if (h == NULL && local_got_offsets)
3736 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3737 else if (h != NULL)
3738 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
3739 if (! info->shared || tls_type == GOT_TLS_IE)
3740 {
3741 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3742 changed into IE:
3743 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3744 or LE:
3745 add %g7, %reg2, %reg3. */
3746 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3747 if ((h != NULL && h->dynindx != -1) || info->shared)
3748 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3749 else
3750 relocation = (insn & ~0x7c000) | 0x1c000;
3751 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3752 }
3753 continue;
3754
3755 case R_SPARC_TLS_LDM_ADD:
3756 if (! info->shared)
3757 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3758 continue;
3759
3760 case R_SPARC_TLS_LDO_ADD:
3761 if (! info->shared)
3762 {
3763 /* Change rs1 into %g7. */
3764 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3765 insn = (insn & ~0x7c000) | 0x1c000;
3766 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3767 }
3768 continue;
3769
3770 case R_SPARC_TLS_IE_LD:
3771 case R_SPARC_TLS_IE_LDX:
3772 if (! info->shared && (h == NULL || h->dynindx == -1))
3773 {
3774 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3775 int rs2 = insn & 0x1f;
3776 int rd = (insn >> 25) & 0x1f;
3777
3778 if (rs2 == rd)
3779 relocation = SPARC_NOP;
3780 else
3781 relocation = 0x80100000 | (insn & 0x3e00001f);
3782 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3783 }
3784 continue;
3785
3786 case R_SPARC_TLS_IE_ADD:
3787 /* Totally useless relocation. */
3788 continue;
3789
3790 case R_SPARC_TLS_DTPOFF32:
3791 case R_SPARC_TLS_DTPOFF64:
3792 relocation -= dtpoff_base (info);
3793 break;
3794
3795 default:
3796 break;
3797 }
3798
3799 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3800 because such sections are not SEC_ALLOC and thus ld.so will
3801 not process them. */
3802 if (unresolved_reloc
3803 && !((input_section->flags & SEC_DEBUGGING) != 0
3804 && h->def_dynamic))
3805 (*_bfd_error_handler)
3806 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3807 input_bfd,
3808 input_section,
3809 (long) rel->r_offset,
3810 howto->name,
3811 h->root.root.string);
3812
3813 r = bfd_reloc_continue;
3814 if (r_type == R_SPARC_OLO10)
3815 {
3816 bfd_vma x;
3817
3818 if (! ABI_64_P (output_bfd))
3819 abort ();
3820
3821 relocation += rel->r_addend;
3822 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3823
3824 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3825 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3826 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3827
3828 r = bfd_check_overflow (howto->complain_on_overflow,
3829 howto->bitsize, howto->rightshift,
3830 bfd_arch_bits_per_address (input_bfd),
3831 relocation);
3832 }
3833 else if (r_type == R_SPARC_WDISP16)
3834 {
3835 bfd_vma x;
3836
3837 relocation += rel->r_addend;
3838 relocation -= (input_section->output_section->vma
3839 + input_section->output_offset);
3840 relocation -= rel->r_offset;
3841
3842 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3843 x |= ((((relocation >> 2) & 0xc000) << 6)
3844 | ((relocation >> 2) & 0x3fff));
3845 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3846
3847 r = bfd_check_overflow (howto->complain_on_overflow,
3848 howto->bitsize, howto->rightshift,
3849 bfd_arch_bits_per_address (input_bfd),
3850 relocation);
3851 }
3852 else if (r_type == R_SPARC_REV32)
3853 {
3854 bfd_vma x;
3855
3856 relocation = relocation + rel->r_addend;
3857
3858 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3859 x = x + relocation;
3860 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3861 r = bfd_reloc_ok;
3862 }
3863 else if (r_type == R_SPARC_TLS_LDO_HIX22
3864 || r_type == R_SPARC_TLS_LE_HIX22)
3865 {
3866 bfd_vma x;
3867
3868 relocation += rel->r_addend;
3869 if (r_type == R_SPARC_TLS_LE_HIX22)
3870 relocation ^= MINUS_ONE;
3871
3872 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3873 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3874 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3875 r = bfd_reloc_ok;
3876 }
3877 else if (r_type == R_SPARC_TLS_LDO_LOX10
3878 || r_type == R_SPARC_TLS_LE_LOX10)
3879 {
3880 bfd_vma x;
3881
3882 relocation += rel->r_addend;
3883 relocation &= 0x3ff;
3884 if (r_type == R_SPARC_TLS_LE_LOX10)
3885 relocation |= 0x1c00;
3886
3887 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3888 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3889 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3890
3891 r = bfd_reloc_ok;
3892 }
3893 else if (r_type == R_SPARC_HIX22
3894 || r_type == R_SPARC_GOTDATA_HIX22)
3895 {
3896 bfd_vma x;
3897
3898 relocation += rel->r_addend;
3899 if (r_type == R_SPARC_HIX22
3900 || (bfd_signed_vma) relocation < 0)
3901 relocation = relocation ^ MINUS_ONE;
3902
3903 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3904 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3905 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3906
3907 r = bfd_check_overflow (howto->complain_on_overflow,
3908 howto->bitsize, howto->rightshift,
3909 bfd_arch_bits_per_address (input_bfd),
3910 relocation);
3911 }
3912 else if (r_type == R_SPARC_LOX10
3913 || r_type == R_SPARC_GOTDATA_LOX10)
3914 {
3915 bfd_vma x;
3916
3917 relocation += rel->r_addend;
3918 if (r_type == R_SPARC_LOX10
3919 || (bfd_signed_vma) relocation < 0)
3920 relocation = (relocation & 0x3ff) | 0x1c00;
3921 else
3922 relocation = (relocation & 0x3ff);
3923
3924 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3925 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3926 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3927
3928 r = bfd_reloc_ok;
3929 }
3930 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
3931 && sec_do_relax (input_section)
3932 && rel->r_offset + 4 < input_section->size)
3933 {
3934 #define G0 0
3935 #define O7 15
3936 #define XCC (2 << 20)
3937 #define COND(x) (((x)&0xf)<<25)
3938 #define CONDA COND(0x8)
3939 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
3940 #define INSN_BA (F2(0,2) | CONDA)
3941 #define INSN_OR F3(2, 0x2, 0)
3942 #define INSN_NOP F2(0,4)
3943
3944 bfd_vma x, y;
3945
3946 /* If the instruction is a call with either:
3947 restore
3948 arithmetic instruction with rd == %o7
3949 where rs1 != %o7 and rs2 if it is register != %o7
3950 then we can optimize if the call destination is near
3951 by changing the call into a branch always. */
3952 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3953 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3954 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
3955 {
3956 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
3957 || ((y & OP3(0x28)) == 0 /* arithmetic */
3958 && (y & RD(~0)) == RD(O7)))
3959 && (y & RS1(~0)) != RS1(O7)
3960 && ((y & F3I(~0))
3961 || (y & RS2(~0)) != RS2(O7)))
3962 {
3963 bfd_vma reloc;
3964
3965 reloc = relocation + rel->r_addend - rel->r_offset;
3966 reloc -= (input_section->output_section->vma
3967 + input_section->output_offset);
3968
3969 /* Ensure the branch fits into simm22. */
3970 if ((reloc & 3) == 0
3971 && ((reloc & ~(bfd_vma)0x7fffff) == 0
3972 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
3973 {
3974 reloc >>= 2;
3975
3976 /* Check whether it fits into simm19. */
3977 if (((reloc & 0x3c0000) == 0
3978 || (reloc & 0x3c0000) == 0x3c0000)
3979 && (ABI_64_P (output_bfd)
3980 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
3981 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
3982 else
3983 x = INSN_BA | (reloc & 0x3fffff); /* ba */
3984 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3985 r = bfd_reloc_ok;
3986 if (rel->r_offset >= 4
3987 && (y & (0xffffffff ^ RS1(~0)))
3988 == (INSN_OR | RD(O7) | RS2(G0)))
3989 {
3990 bfd_vma z;
3991 unsigned int reg;
3992
3993 z = bfd_get_32 (input_bfd,
3994 contents + rel->r_offset - 4);
3995 if ((z & (0xffffffff ^ RD(~0)))
3996 != (INSN_OR | RS1(O7) | RS2(G0)))
3997 break;
3998
3999 /* The sequence was
4000 or %o7, %g0, %rN
4001 call foo
4002 or %rN, %g0, %o7
4003
4004 If call foo was replaced with ba, replace
4005 or %rN, %g0, %o7 with nop. */
4006
4007 reg = (y & RS1(~0)) >> 14;
4008 if (reg != ((z & RD(~0)) >> 25)
4009 || reg == G0 || reg == O7)
4010 break;
4011
4012 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4013 contents + rel->r_offset + 4);
4014 }
4015
4016 }
4017 }
4018 }
4019 }
4020
4021 if (r == bfd_reloc_continue)
4022 {
4023 do_relocation:
4024 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4025 contents, rel->r_offset,
4026 relocation, rel->r_addend);
4027 }
4028 if (r != bfd_reloc_ok)
4029 {
4030 switch (r)
4031 {
4032 default:
4033 case bfd_reloc_outofrange:
4034 abort ();
4035 case bfd_reloc_overflow:
4036 {
4037 const char *name;
4038
4039 /* The Solaris native linker silently disregards overflows.
4040 We don't, but this breaks stabs debugging info, whose
4041 relocations are only 32-bits wide. Ignore overflows in
4042 this case and also for discarded entries. */
4043 if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32)
4044 && (((input_section->flags & SEC_DEBUGGING) != 0
4045 && strcmp (bfd_section_name (input_bfd,
4046 input_section),
4047 ".stab") == 0)
4048 || _bfd_elf_section_offset (output_bfd, info,
4049 input_section,
4050 rel->r_offset)
4051 == (bfd_vma)-1))
4052 break;
4053
4054 if (h != NULL)
4055 {
4056 /* Assume this is a call protected by other code that
4057 detect the symbol is undefined. If this is the case,
4058 we can safely ignore the overflow. If not, the
4059 program is hosed anyway, and a little warning isn't
4060 going to help. */
4061 if (h->root.type == bfd_link_hash_undefweak
4062 && howto->pc_relative)
4063 break;
4064
4065 name = NULL;
4066 }
4067 else
4068 {
4069 name = bfd_elf_string_from_elf_section (input_bfd,
4070 symtab_hdr->sh_link,
4071 sym->st_name);
4072 if (name == NULL)
4073 return FALSE;
4074 if (*name == '\0')
4075 name = bfd_section_name (input_bfd, sec);
4076 }
4077 if (! ((*info->callbacks->reloc_overflow)
4078 (info, (h ? &h->root : NULL), name, howto->name,
4079 (bfd_vma) 0, input_bfd, input_section,
4080 rel->r_offset)))
4081 return FALSE;
4082 }
4083 break;
4084 }
4085 }
4086 }
4087
4088 return TRUE;
4089 }
4090
4091 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4092 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4093 is the offset of the associated .got.plt entry from
4094 _GLOBAL_OFFSET_TABLE_. */
4095
4096 static void
4097 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4098 bfd_vma plt_offset, bfd_vma plt_index,
4099 bfd_vma got_offset)
4100 {
4101 bfd_vma got_base;
4102 const bfd_vma *plt_entry;
4103 struct _bfd_sparc_elf_link_hash_table *htab;
4104 bfd_byte *loc;
4105 Elf_Internal_Rela rela;
4106
4107 htab = _bfd_sparc_elf_hash_table (info);
4108 BFD_ASSERT (htab != NULL);
4109
4110 if (info->shared)
4111 {
4112 plt_entry = sparc_vxworks_shared_plt_entry;
4113 got_base = 0;
4114 }
4115 else
4116 {
4117 plt_entry = sparc_vxworks_exec_plt_entry;
4118 got_base = (htab->elf.hgot->root.u.def.value
4119 + htab->elf.hgot->root.u.def.section->output_offset
4120 + htab->elf.hgot->root.u.def.section->output_section->vma);
4121 }
4122
4123 /* Fill in the entry in the procedure linkage table. */
4124 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4125 htab->elf.splt->contents + plt_offset);
4126 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4127 htab->elf.splt->contents + plt_offset + 4);
4128 bfd_put_32 (output_bfd, plt_entry[2],
4129 htab->elf.splt->contents + plt_offset + 8);
4130 bfd_put_32 (output_bfd, plt_entry[3],
4131 htab->elf.splt->contents + plt_offset + 12);
4132 bfd_put_32 (output_bfd, plt_entry[4],
4133 htab->elf.splt->contents + plt_offset + 16);
4134 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4135 htab->elf.splt->contents + plt_offset + 20);
4136 /* PC-relative displacement for a branch to the start of
4137 the PLT section. */
4138 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4139 & 0x003fffff),
4140 htab->elf.splt->contents + plt_offset + 24);
4141 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4142 htab->elf.splt->contents + plt_offset + 28);
4143
4144 /* Fill in the .got.plt entry, pointing initially at the
4145 second half of the PLT entry. */
4146 BFD_ASSERT (htab->elf.sgotplt != NULL);
4147 bfd_put_32 (output_bfd,
4148 htab->elf.splt->output_section->vma
4149 + htab->elf.splt->output_offset
4150 + plt_offset + 20,
4151 htab->elf.sgotplt->contents + got_offset);
4152
4153 /* Add relocations to .rela.plt.unloaded. */
4154 if (!info->shared)
4155 {
4156 loc = (htab->srelplt2->contents
4157 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4158
4159 /* Relocate the initial sethi. */
4160 rela.r_offset = (htab->elf.splt->output_section->vma
4161 + htab->elf.splt->output_offset
4162 + plt_offset);
4163 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4164 rela.r_addend = got_offset;
4165 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4166 loc += sizeof (Elf32_External_Rela);
4167
4168 /* Likewise the following or. */
4169 rela.r_offset += 4;
4170 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4171 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4172 loc += sizeof (Elf32_External_Rela);
4173
4174 /* Relocate the .got.plt entry. */
4175 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4176 + htab->elf.sgotplt->output_offset
4177 + got_offset);
4178 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4179 rela.r_addend = plt_offset + 20;
4180 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4181 }
4182 }
4183
4184 /* Finish up dynamic symbol handling. We set the contents of various
4185 dynamic sections here. */
4186
4187 bfd_boolean
4188 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4189 struct bfd_link_info *info,
4190 struct elf_link_hash_entry *h,
4191 Elf_Internal_Sym *sym)
4192 {
4193 struct _bfd_sparc_elf_link_hash_table *htab;
4194 const struct elf_backend_data *bed;
4195
4196 htab = _bfd_sparc_elf_hash_table (info);
4197 BFD_ASSERT (htab != NULL);
4198 bed = get_elf_backend_data (output_bfd);
4199
4200 if (h->plt.offset != (bfd_vma) -1)
4201 {
4202 asection *splt;
4203 asection *srela;
4204 Elf_Internal_Rela rela;
4205 bfd_byte *loc;
4206 bfd_vma r_offset, got_offset;
4207 int rela_index;
4208
4209 /* When building a static executable, use .iplt and
4210 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4211 if (htab->elf.splt != NULL)
4212 {
4213 splt = htab->elf.splt;
4214 srela = htab->elf.srelplt;
4215 }
4216 else
4217 {
4218 splt = htab->elf.iplt;
4219 srela = htab->elf.irelplt;
4220 }
4221
4222 if (splt == NULL || srela == NULL)
4223 abort ();
4224
4225 /* Fill in the entry in the .rela.plt section. */
4226 if (htab->is_vxworks)
4227 {
4228 /* Work out the index of this PLT entry. */
4229 rela_index = ((h->plt.offset - htab->plt_header_size)
4230 / htab->plt_entry_size);
4231
4232 /* Calculate the offset of the associated .got.plt entry.
4233 The first three entries are reserved. */
4234 got_offset = (rela_index + 3) * 4;
4235
4236 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4237 rela_index, got_offset);
4238
4239
4240 /* On VxWorks, the relocation points to the .got.plt entry,
4241 not the .plt entry. */
4242 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4243 + htab->elf.sgotplt->output_offset
4244 + got_offset);
4245 rela.r_addend = 0;
4246 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4247 R_SPARC_JMP_SLOT);
4248 }
4249 else
4250 {
4251 bfd_boolean ifunc = FALSE;
4252
4253 /* Fill in the entry in the procedure linkage table. */
4254 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4255 h->plt.offset, splt->size,
4256 &r_offset);
4257
4258 if (h == NULL
4259 || h->dynindx == -1
4260 || ((info->executable
4261 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4262 && h->def_regular
4263 && h->type == STT_GNU_IFUNC))
4264 {
4265 ifunc = TRUE;
4266 BFD_ASSERT (h == NULL
4267 || (h->type == STT_GNU_IFUNC
4268 && h->def_regular
4269 && (h->root.type == bfd_link_hash_defined
4270 || h->root.type == bfd_link_hash_defweak)));
4271 }
4272
4273 rela.r_offset = r_offset
4274 + (splt->output_section->vma + splt->output_offset);
4275 if (ABI_64_P (output_bfd)
4276 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4277 {
4278 if (ifunc)
4279 {
4280 rela.r_addend = (h->root.u.def.section->output_section->vma
4281 + h->root.u.def.section->output_offset
4282 + h->root.u.def.value);
4283 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4284 R_SPARC_IRELATIVE);
4285 }
4286 else
4287 {
4288 rela.r_addend = (-(h->plt.offset + 4)
4289 - splt->output_section->vma
4290 - splt->output_offset);
4291 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4292 R_SPARC_JMP_SLOT);
4293 }
4294 }
4295 else
4296 {
4297 if (ifunc)
4298 {
4299 rela.r_addend = (h->root.u.def.section->output_section->vma
4300 + h->root.u.def.section->output_offset
4301 + h->root.u.def.value);
4302 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4303 R_SPARC_JMP_IREL);
4304 }
4305 else
4306 {
4307 rela.r_addend = 0;
4308 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4309 R_SPARC_JMP_SLOT);
4310 }
4311 }
4312 }
4313
4314 /* Adjust for the first 4 reserved elements in the .plt section
4315 when setting the offset in the .rela.plt section.
4316 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4317 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4318
4319 loc = srela->contents;
4320 loc += rela_index * bed->s->sizeof_rela;
4321 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4322
4323 if (!h->def_regular)
4324 {
4325 /* Mark the symbol as undefined, rather than as defined in
4326 the .plt section. Leave the value alone. */
4327 sym->st_shndx = SHN_UNDEF;
4328 /* If the symbol is weak, we do need to clear the value.
4329 Otherwise, the PLT entry would provide a definition for
4330 the symbol even if the symbol wasn't defined anywhere,
4331 and so the symbol would never be NULL. */
4332 if (!h->ref_regular_nonweak)
4333 sym->st_value = 0;
4334 }
4335 }
4336
4337 if (h->got.offset != (bfd_vma) -1
4338 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4339 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4340 {
4341 asection *sgot;
4342 asection *srela;
4343 Elf_Internal_Rela rela;
4344
4345 /* This symbol has an entry in the GOT. Set it up. */
4346
4347 sgot = htab->elf.sgot;
4348 srela = htab->elf.srelgot;
4349 BFD_ASSERT (sgot != NULL && srela != NULL);
4350
4351 rela.r_offset = (sgot->output_section->vma
4352 + sgot->output_offset
4353 + (h->got.offset &~ (bfd_vma) 1));
4354
4355 /* If this is a -Bsymbolic link, and the symbol is defined
4356 locally, we just want to emit a RELATIVE reloc. Likewise if
4357 the symbol was forced to be local because of a version file.
4358 The entry in the global offset table will already have been
4359 initialized in the relocate_section function. */
4360 if (! info->shared
4361 && h->type == STT_GNU_IFUNC
4362 && h->def_regular)
4363 {
4364 asection *plt;
4365
4366 /* We load the GOT entry with the PLT entry. */
4367 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4368 SPARC_ELF_PUT_WORD (htab, output_bfd,
4369 (plt->output_section->vma
4370 + plt->output_offset + h->plt.offset),
4371 htab->elf.sgot->contents
4372 + (h->got.offset & ~(bfd_vma) 1));
4373 return TRUE;
4374 }
4375 else if (info->shared
4376 && SYMBOL_REFERENCES_LOCAL (info, h))
4377 {
4378 asection *sec = h->root.u.def.section;
4379 if (h->type == STT_GNU_IFUNC)
4380 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4381 else
4382 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4383 rela.r_addend = (h->root.u.def.value
4384 + sec->output_section->vma
4385 + sec->output_offset);
4386 }
4387 else
4388 {
4389 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4390 rela.r_addend = 0;
4391 }
4392
4393 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4394 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4395 sparc_elf_append_rela (output_bfd, srela, &rela);
4396 }
4397
4398 if (h->needs_copy)
4399 {
4400 asection *s;
4401 Elf_Internal_Rela rela;
4402
4403 /* This symbols needs a copy reloc. Set it up. */
4404 BFD_ASSERT (h->dynindx != -1);
4405
4406 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4407 ".rela.bss");
4408 BFD_ASSERT (s != NULL);
4409
4410 rela.r_offset = (h->root.u.def.value
4411 + h->root.u.def.section->output_section->vma
4412 + h->root.u.def.section->output_offset);
4413 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4414 rela.r_addend = 0;
4415 sparc_elf_append_rela (output_bfd, s, &rela);
4416 }
4417
4418 /* Mark some specially defined symbols as absolute. On VxWorks,
4419 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4420 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4421 if (sym != NULL
4422 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4423 || (!htab->is_vxworks
4424 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4425 sym->st_shndx = SHN_ABS;
4426
4427 return TRUE;
4428 }
4429
4430 /* Finish up the dynamic sections. */
4431
4432 static bfd_boolean
4433 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4434 bfd *dynobj, asection *sdyn,
4435 asection *splt ATTRIBUTE_UNUSED)
4436 {
4437 struct _bfd_sparc_elf_link_hash_table *htab;
4438 const struct elf_backend_data *bed;
4439 bfd_byte *dyncon, *dynconend;
4440 size_t dynsize;
4441 int stt_regidx = -1;
4442 bfd_boolean abi_64_p;
4443
4444 htab = _bfd_sparc_elf_hash_table (info);
4445 BFD_ASSERT (htab != NULL);
4446 bed = get_elf_backend_data (output_bfd);
4447 dynsize = bed->s->sizeof_dyn;
4448 dynconend = sdyn->contents + sdyn->size;
4449 abi_64_p = ABI_64_P (output_bfd);
4450 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4451 {
4452 Elf_Internal_Dyn dyn;
4453 const char *name;
4454 bfd_boolean size;
4455
4456 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4457
4458 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ)
4459 {
4460 /* On VxWorks, DT_RELASZ should not include the relocations
4461 in .rela.plt. */
4462 if (htab->elf.srelplt)
4463 {
4464 dyn.d_un.d_val -= htab->elf.srelplt->size;
4465 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4466 }
4467 }
4468 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT)
4469 {
4470 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4471 not to the start of the PLT. */
4472 if (htab->elf.sgotplt)
4473 {
4474 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4475 + htab->elf.sgotplt->output_offset);
4476 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4477 }
4478 }
4479 else if (htab->is_vxworks
4480 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4481 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4482 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4483 {
4484 if (stt_regidx == -1)
4485 {
4486 stt_regidx =
4487 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4488 if (stt_regidx == -1)
4489 return FALSE;
4490 }
4491 dyn.d_un.d_val = stt_regidx++;
4492 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4493 }
4494 else
4495 {
4496 switch (dyn.d_tag)
4497 {
4498 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
4499 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
4500 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
4501 default: name = NULL; size = FALSE; break;
4502 }
4503
4504 if (name != NULL)
4505 {
4506 asection *s;
4507
4508 s = bfd_get_section_by_name (output_bfd, name);
4509 if (s == NULL)
4510 dyn.d_un.d_val = 0;
4511 else
4512 {
4513 if (! size)
4514 dyn.d_un.d_ptr = s->vma;
4515 else
4516 dyn.d_un.d_val = s->size;
4517 }
4518 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4519 }
4520 }
4521 }
4522 return TRUE;
4523 }
4524
4525 /* Install the first PLT entry in a VxWorks executable and make sure that
4526 .rela.plt.unloaded relocations have the correct symbol indexes. */
4527
4528 static void
4529 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4530 {
4531 struct _bfd_sparc_elf_link_hash_table *htab;
4532 Elf_Internal_Rela rela;
4533 bfd_vma got_base;
4534 bfd_byte *loc;
4535
4536 htab = _bfd_sparc_elf_hash_table (info);
4537 BFD_ASSERT (htab != NULL);
4538
4539 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4540 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4541 + htab->elf.hgot->root.u.def.section->output_offset
4542 + htab->elf.hgot->root.u.def.value);
4543
4544 /* Install the initial PLT entry. */
4545 bfd_put_32 (output_bfd,
4546 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4547 htab->elf.splt->contents);
4548 bfd_put_32 (output_bfd,
4549 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4550 htab->elf.splt->contents + 4);
4551 bfd_put_32 (output_bfd,
4552 sparc_vxworks_exec_plt0_entry[2],
4553 htab->elf.splt->contents + 8);
4554 bfd_put_32 (output_bfd,
4555 sparc_vxworks_exec_plt0_entry[3],
4556 htab->elf.splt->contents + 12);
4557 bfd_put_32 (output_bfd,
4558 sparc_vxworks_exec_plt0_entry[4],
4559 htab->elf.splt->contents + 16);
4560
4561 loc = htab->srelplt2->contents;
4562
4563 /* Add an unloaded relocation for the initial entry's "sethi". */
4564 rela.r_offset = (htab->elf.splt->output_section->vma
4565 + htab->elf.splt->output_offset);
4566 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4567 rela.r_addend = 8;
4568 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4569 loc += sizeof (Elf32_External_Rela);
4570
4571 /* Likewise the following "or". */
4572 rela.r_offset += 4;
4573 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4574 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4575 loc += sizeof (Elf32_External_Rela);
4576
4577 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4578 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4579 in which symbols were output. */
4580 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4581 {
4582 Elf_Internal_Rela rel;
4583
4584 /* The entry's initial "sethi" (against _G_O_T_). */
4585 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4586 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4587 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4588 loc += sizeof (Elf32_External_Rela);
4589
4590 /* The following "or" (also against _G_O_T_). */
4591 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4592 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4593 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4594 loc += sizeof (Elf32_External_Rela);
4595
4596 /* The .got.plt entry (against _P_L_T_). */
4597 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4598 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4599 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4600 loc += sizeof (Elf32_External_Rela);
4601 }
4602 }
4603
4604 /* Install the first PLT entry in a VxWorks shared object. */
4605
4606 static void
4607 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4608 {
4609 struct _bfd_sparc_elf_link_hash_table *htab;
4610 unsigned int i;
4611
4612 htab = _bfd_sparc_elf_hash_table (info);
4613 BFD_ASSERT (htab != NULL);
4614
4615 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4616 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4617 htab->elf.splt->contents + i * 4);
4618 }
4619
4620 /* Finish up local dynamic symbol handling. We set the contents of
4621 various dynamic sections here. */
4622
4623 static bfd_boolean
4624 finish_local_dynamic_symbol (void **slot, void *inf)
4625 {
4626 struct elf_link_hash_entry *h
4627 = (struct elf_link_hash_entry *) *slot;
4628 struct bfd_link_info *info
4629 = (struct bfd_link_info *) inf;
4630
4631 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4632 h, NULL);
4633 }
4634
4635 bfd_boolean
4636 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4637 {
4638 bfd *dynobj;
4639 asection *sdyn;
4640 struct _bfd_sparc_elf_link_hash_table *htab;
4641
4642 htab = _bfd_sparc_elf_hash_table (info);
4643 BFD_ASSERT (htab != NULL);
4644 dynobj = htab->elf.dynobj;
4645
4646 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4647
4648 if (elf_hash_table (info)->dynamic_sections_created)
4649 {
4650 asection *splt;
4651
4652 splt = bfd_get_section_by_name (dynobj, ".plt");
4653 BFD_ASSERT (splt != NULL && sdyn != NULL);
4654
4655 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4656 return FALSE;
4657
4658 /* Initialize the contents of the .plt section. */
4659 if (splt->size > 0)
4660 {
4661 if (htab->is_vxworks)
4662 {
4663 if (info->shared)
4664 sparc_vxworks_finish_shared_plt (output_bfd, info);
4665 else
4666 sparc_vxworks_finish_exec_plt (output_bfd, info);
4667 }
4668 else
4669 {
4670 memset (splt->contents, 0, htab->plt_header_size);
4671 if (!ABI_64_P (output_bfd))
4672 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4673 splt->contents + splt->size - 4);
4674 }
4675 }
4676
4677 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4678 = (htab->is_vxworks || !ABI_64_P (output_bfd))
4679 ? 0 : htab->plt_entry_size;
4680 }
4681
4682 /* Set the first entry in the global offset table to the address of
4683 the dynamic section. */
4684 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4685 {
4686 bfd_vma val = (sdyn ?
4687 sdyn->output_section->vma + sdyn->output_offset :
4688 0);
4689
4690 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4691 }
4692
4693 if (htab->elf.sgot)
4694 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4695 SPARC_ELF_WORD_BYTES (htab);
4696
4697 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4698 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4699
4700 return TRUE;
4701 }
4702
4703 \f
4704 /* Set the right machine number for a SPARC ELF file. */
4705
4706 bfd_boolean
4707 _bfd_sparc_elf_object_p (bfd *abfd)
4708 {
4709 if (ABI_64_P (abfd))
4710 {
4711 unsigned long mach = bfd_mach_sparc_v9;
4712
4713 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4714 mach = bfd_mach_sparc_v9b;
4715 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4716 mach = bfd_mach_sparc_v9a;
4717 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4718 }
4719 else
4720 {
4721 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4722 {
4723 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4724 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4725 bfd_mach_sparc_v8plusb);
4726 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4727 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4728 bfd_mach_sparc_v8plusa);
4729 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4730 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4731 bfd_mach_sparc_v8plus);
4732 else
4733 return FALSE;
4734 }
4735 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4736 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4737 bfd_mach_sparc_sparclite_le);
4738 else
4739 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4740 }
4741 }
4742
4743 /* Return address for Ith PLT stub in section PLT, for relocation REL
4744 or (bfd_vma) -1 if it should not be included. */
4745
4746 bfd_vma
4747 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4748 {
4749 if (ABI_64_P (plt->owner))
4750 {
4751 bfd_vma j;
4752
4753 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4754 if (i < PLT64_LARGE_THRESHOLD)
4755 return plt->vma + i * PLT64_ENTRY_SIZE;
4756
4757 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4758 i -= j;
4759 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4760 }
4761 else
4762 return rel->address;
4763 }
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