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22b75d0a DM |
1 | /* SPARC-specific support for ELF |
2 | Copyright 2005 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 2 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 | |
3e110533 | 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
22b75d0a DM |
19 | |
20 | /* This file handles functionality common to the different SPARC ABI's. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/sparc.h" | |
28 | #include "opcode/sparc.h" | |
29 | #include "elfxx-sparc.h" | |
30 | ||
31 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
32 | #define MINUS_ONE (~ (bfd_vma) 0) | |
33 | ||
34 | #define ABI_64_P(abfd) \ | |
35 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) | |
36 | ||
37 | /* The relocation "howto" table. */ | |
38 | ||
39 | /* Utility for performing the standard initial work of an instruction | |
40 | relocation. | |
41 | *PRELOCATION will contain the relocated item. | |
42 | *PINSN will contain the instruction from the input stream. | |
43 | If the result is `bfd_reloc_other' the caller can continue with | |
44 | performing the relocation. Otherwise it must stop and return the | |
45 | value to its caller. */ | |
46 | ||
47 | static bfd_reloc_status_type | |
48 | init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
49 | PTR data, asection *input_section, bfd *output_bfd, | |
50 | bfd_vma *prelocation, bfd_vma *pinsn) | |
51 | { | |
52 | bfd_vma relocation; | |
53 | reloc_howto_type *howto = reloc_entry->howto; | |
54 | ||
55 | if (output_bfd != (bfd *) NULL | |
56 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
57 | && (! howto->partial_inplace | |
58 | || reloc_entry->addend == 0)) | |
59 | { | |
60 | reloc_entry->address += input_section->output_offset; | |
61 | return bfd_reloc_ok; | |
62 | } | |
63 | ||
64 | /* This works because partial_inplace is FALSE. */ | |
65 | if (output_bfd != NULL) | |
66 | return bfd_reloc_continue; | |
67 | ||
68 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
69 | return bfd_reloc_outofrange; | |
70 | ||
71 | relocation = (symbol->value | |
72 | + symbol->section->output_section->vma | |
73 | + symbol->section->output_offset); | |
74 | relocation += reloc_entry->addend; | |
75 | if (howto->pc_relative) | |
76 | { | |
77 | relocation -= (input_section->output_section->vma | |
78 | + input_section->output_offset); | |
79 | relocation -= reloc_entry->address; | |
80 | } | |
81 | ||
82 | *prelocation = relocation; | |
83 | *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
84 | return bfd_reloc_other; | |
85 | } | |
86 | ||
87 | /* For unsupported relocs. */ | |
88 | ||
89 | static bfd_reloc_status_type | |
90 | sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
91 | arelent *reloc_entry ATTRIBUTE_UNUSED, | |
92 | asymbol *symbol ATTRIBUTE_UNUSED, | |
93 | PTR data ATTRIBUTE_UNUSED, | |
94 | asection *input_section ATTRIBUTE_UNUSED, | |
95 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
96 | char **error_message ATTRIBUTE_UNUSED) | |
97 | { | |
98 | return bfd_reloc_notsupported; | |
99 | } | |
100 | ||
101 | /* Handle the WDISP16 reloc. */ | |
102 | ||
103 | static bfd_reloc_status_type | |
104 | sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
105 | PTR data, asection *input_section, bfd *output_bfd, | |
106 | char **error_message ATTRIBUTE_UNUSED) | |
107 | { | |
108 | bfd_vma relocation; | |
109 | bfd_vma insn; | |
110 | bfd_reloc_status_type status; | |
111 | ||
112 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
113 | input_section, output_bfd, &relocation, &insn); | |
114 | if (status != bfd_reloc_other) | |
115 | return status; | |
116 | ||
117 | insn &= ~ (bfd_vma) 0x303fff; | |
118 | insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff); | |
119 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
120 | ||
121 | if ((bfd_signed_vma) relocation < - 0x40000 | |
122 | || (bfd_signed_vma) relocation > 0x3ffff) | |
123 | return bfd_reloc_overflow; | |
124 | else | |
125 | return bfd_reloc_ok; | |
126 | } | |
127 | ||
128 | /* Handle the HIX22 reloc. */ | |
129 | ||
130 | static bfd_reloc_status_type | |
131 | sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
132 | PTR data, asection *input_section, bfd *output_bfd, | |
133 | char **error_message ATTRIBUTE_UNUSED) | |
134 | { | |
135 | bfd_vma relocation; | |
136 | bfd_vma insn; | |
137 | bfd_reloc_status_type status; | |
138 | ||
139 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
140 | input_section, output_bfd, &relocation, &insn); | |
141 | if (status != bfd_reloc_other) | |
142 | return status; | |
143 | ||
144 | relocation ^= MINUS_ONE; | |
145 | insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
146 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
147 | ||
148 | if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) | |
149 | return bfd_reloc_overflow; | |
150 | else | |
151 | return bfd_reloc_ok; | |
152 | } | |
153 | ||
154 | /* Handle the LOX10 reloc. */ | |
155 | ||
156 | static bfd_reloc_status_type | |
157 | sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
158 | PTR data, asection *input_section, bfd *output_bfd, | |
159 | char **error_message ATTRIBUTE_UNUSED) | |
160 | { | |
161 | bfd_vma relocation; | |
162 | bfd_vma insn; | |
163 | bfd_reloc_status_type status; | |
164 | ||
165 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
166 | input_section, output_bfd, &relocation, &insn); | |
167 | if (status != bfd_reloc_other) | |
168 | return status; | |
169 | ||
170 | insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); | |
171 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
172 | ||
173 | return bfd_reloc_ok; | |
174 | } | |
175 | ||
176 | static reloc_howto_type _bfd_sparc_elf_howto_table[] = | |
177 | { | |
178 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), | |
179 | HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), | |
180 | HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), | |
181 | HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), | |
182 | HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), | |
183 | HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), | |
184 | HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), | |
185 | HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), | |
186 | HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), | |
187 | HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), | |
188 | HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), | |
189 | HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), | |
190 | HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), | |
191 | HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), | |
192 | HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), | |
193 | HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), | |
194 | HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), | |
195 | HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), | |
196 | HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), | |
197 | HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), | |
198 | 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), | |
199 | 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), | |
200 | HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), | |
201 | HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), | |
202 | HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), | |
203 | HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), | |
204 | HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), | |
205 | HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), | |
206 | HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), | |
207 | HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), | |
208 | HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), | |
209 | HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), | |
210 | HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE), | |
211 | HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE), | |
212 | HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE), | |
213 | HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE), | |
214 | HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE), | |
215 | 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), | |
216 | 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), | |
217 | 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), | |
218 | HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), | |
219 | HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), | |
220 | 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), | |
221 | HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), | |
222 | HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), | |
223 | HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), | |
224 | HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE), | |
225 | HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE), | |
226 | HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE), | |
227 | HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE), | |
228 | HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE), | |
229 | HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE), | |
230 | HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE), | |
231 | HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE), | |
232 | HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE), | |
233 | HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), | |
234 | 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), | |
235 | 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), | |
236 | 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), | |
237 | 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), | |
238 | 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), | |
239 | 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), | |
240 | 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), | |
241 | 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), | |
242 | 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), | |
243 | 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), | |
244 | 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), | |
245 | 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), | |
246 | 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), | |
247 | 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), | |
248 | 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), | |
249 | 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), | |
250 | 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), | |
251 | 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), | |
252 | 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), | |
253 | 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), | |
254 | 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), | |
255 | 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), | |
256 | 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), | |
257 | 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) | |
258 | }; | |
259 | static reloc_howto_type sparc_vtinherit_howto = | |
260 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); | |
261 | static reloc_howto_type sparc_vtentry_howto = | |
262 | 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); | |
263 | static reloc_howto_type sparc_rev32_howto = | |
264 | HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE); | |
265 | ||
266 | struct elf_reloc_map { | |
267 | bfd_reloc_code_real_type bfd_reloc_val; | |
268 | unsigned char elf_reloc_val; | |
269 | }; | |
270 | ||
271 | static const struct elf_reloc_map sparc_reloc_map[] = | |
272 | { | |
273 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
274 | { BFD_RELOC_16, R_SPARC_16, }, | |
275 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, | |
276 | { BFD_RELOC_8, R_SPARC_8 }, | |
277 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
278 | { BFD_RELOC_CTOR, R_SPARC_64 }, | |
279 | { BFD_RELOC_32, R_SPARC_32 }, | |
280 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
281 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
282 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
283 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
284 | { BFD_RELOC_64_PCREL, R_SPARC_DISP64 }, | |
285 | { BFD_RELOC_SPARC22, R_SPARC_22 }, | |
286 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
287 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
288 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
289 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
290 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
291 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
292 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
293 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
294 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
295 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
296 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
297 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
298 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, | |
299 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, | |
300 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, | |
301 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, | |
302 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, | |
303 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, | |
304 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, | |
305 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, | |
306 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, | |
307 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, | |
308 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, | |
309 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, | |
310 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, | |
311 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, | |
312 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, | |
313 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, | |
314 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, | |
315 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, | |
316 | { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 }, | |
317 | { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 }, | |
318 | { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 }, | |
319 | { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD }, | |
320 | { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL }, | |
321 | { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 }, | |
322 | { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 }, | |
323 | { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD }, | |
324 | { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL }, | |
325 | { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 }, | |
326 | { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 }, | |
327 | { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD }, | |
328 | { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 }, | |
329 | { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 }, | |
330 | { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD }, | |
331 | { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX }, | |
332 | { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD }, | |
333 | { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 }, | |
334 | { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 }, | |
335 | { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 }, | |
336 | { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 }, | |
337 | { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 }, | |
338 | { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 }, | |
339 | { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 }, | |
340 | { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 }, | |
341 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, | |
342 | { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 }, | |
343 | { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 }, | |
344 | { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 }, | |
345 | { BFD_RELOC_SPARC_H44, R_SPARC_H44 }, | |
346 | { BFD_RELOC_SPARC_M44, R_SPARC_M44 }, | |
347 | { BFD_RELOC_SPARC_L44, R_SPARC_L44 }, | |
348 | { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER }, | |
349 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, | |
350 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, | |
351 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, | |
352 | }; | |
353 | ||
354 | reloc_howto_type * | |
355 | _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
356 | bfd_reloc_code_real_type code) | |
357 | { | |
358 | unsigned int i; | |
359 | ||
360 | switch (code) | |
361 | { | |
362 | case BFD_RELOC_VTABLE_INHERIT: | |
363 | return &sparc_vtinherit_howto; | |
364 | ||
365 | case BFD_RELOC_VTABLE_ENTRY: | |
366 | return &sparc_vtentry_howto; | |
367 | ||
368 | case BFD_RELOC_SPARC_REV32: | |
369 | return &sparc_rev32_howto; | |
370 | ||
371 | default: | |
372 | for (i = 0; | |
373 | i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); | |
374 | i++) | |
375 | { | |
376 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
377 | return (_bfd_sparc_elf_howto_table | |
378 | + (int) sparc_reloc_map[i].elf_reloc_val); | |
379 | } | |
380 | } | |
381 | bfd_set_error (bfd_error_bad_value); | |
382 | return NULL; | |
383 | } | |
384 | ||
385 | reloc_howto_type * | |
386 | _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type) | |
387 | { | |
388 | switch (r_type) | |
389 | { | |
390 | case R_SPARC_GNU_VTINHERIT: | |
391 | return &sparc_vtinherit_howto; | |
392 | ||
393 | case R_SPARC_GNU_VTENTRY: | |
394 | return &sparc_vtentry_howto; | |
395 | ||
396 | case R_SPARC_REV32: | |
397 | return &sparc_rev32_howto; | |
398 | ||
399 | default: | |
400 | BFD_ASSERT (r_type < (unsigned int) R_SPARC_max_std); | |
401 | return &_bfd_sparc_elf_howto_table[r_type]; | |
402 | } | |
403 | } | |
404 | ||
405 | /* Both 32-bit and 64-bit sparc encode this in an identical manner, | |
406 | so just take advantage of that. */ | |
407 | #define SPARC_ELF_R_TYPE(r_info) \ | |
408 | ((r_info) & 0xff) | |
409 | ||
410 | void | |
411 | _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, | |
412 | Elf_Internal_Rela *dst) | |
413 | { | |
414 | unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info); | |
415 | ||
416 | cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type); | |
417 | } | |
418 | \f | |
419 | ||
420 | /* The nop opcode we use. */ | |
421 | #define SPARC_NOP 0x01000000 | |
422 | ||
423 | #define SPARC_INSN_BYTES 4 | |
424 | ||
425 | /* The SPARC linker needs to keep track of the number of relocs that it | |
426 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
427 | This is so that it can later discard them if they are found to be | |
428 | unnecessary. We store the information in a field extending the | |
429 | regular ELF linker hash table. */ | |
430 | ||
431 | struct _bfd_sparc_elf_dyn_relocs | |
432 | { | |
433 | struct _bfd_sparc_elf_dyn_relocs *next; | |
434 | ||
435 | /* The input section of the reloc. */ | |
436 | asection *sec; | |
437 | ||
438 | /* Total number of relocs copied for the input section. */ | |
439 | bfd_size_type count; | |
440 | ||
441 | /* Number of pc-relative relocs copied for the input section. */ | |
442 | bfd_size_type pc_count; | |
443 | }; | |
444 | ||
445 | /* SPARC ELF linker hash entry. */ | |
446 | ||
447 | struct _bfd_sparc_elf_link_hash_entry | |
448 | { | |
449 | struct elf_link_hash_entry elf; | |
450 | ||
451 | /* Track dynamic relocs copied for this symbol. */ | |
452 | struct _bfd_sparc_elf_dyn_relocs *dyn_relocs; | |
453 | ||
454 | #define GOT_UNKNOWN 0 | |
455 | #define GOT_NORMAL 1 | |
456 | #define GOT_TLS_GD 2 | |
457 | #define GOT_TLS_IE 3 | |
458 | unsigned char tls_type; | |
459 | }; | |
460 | ||
461 | #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent)) | |
462 | ||
463 | struct _bfd_sparc_elf_obj_tdata | |
464 | { | |
465 | struct elf_obj_tdata root; | |
466 | ||
467 | /* tls_type for each local got entry. */ | |
468 | char *local_got_tls_type; | |
469 | ||
470 | /* TRUE if TLS GD relocs has been seen for this object. */ | |
471 | bfd_boolean has_tlsgd; | |
472 | }; | |
473 | ||
474 | #define _bfd_sparc_elf_tdata(abfd) \ | |
475 | ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any) | |
476 | ||
477 | #define _bfd_sparc_elf_local_got_tls_type(abfd) \ | |
478 | (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type) | |
479 | ||
480 | bfd_boolean | |
481 | _bfd_sparc_elf_mkobject (bfd *abfd) | |
482 | { | |
483 | bfd_size_type amt = sizeof (struct _bfd_sparc_elf_obj_tdata); | |
484 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
485 | if (abfd->tdata.any == NULL) | |
486 | return FALSE; | |
487 | return TRUE; | |
488 | } | |
489 | ||
490 | static void | |
491 | sparc_put_word_32 (bfd *bfd, bfd_vma val, void *ptr) | |
492 | { | |
493 | bfd_put_32 (bfd, val, ptr); | |
494 | } | |
495 | ||
496 | static void | |
497 | sparc_put_word_64 (bfd *bfd, bfd_vma val, void *ptr) | |
498 | { | |
499 | bfd_put_64 (bfd, val, ptr); | |
500 | } | |
501 | ||
502 | static void | |
e459dc7b DM |
503 | sparc_elf_append_rela_64 (bfd *abfd ATTRIBUTE_UNUSED, |
504 | asection *s ATTRIBUTE_UNUSED, | |
505 | Elf_Internal_Rela *rel ATTRIBUTE_UNUSED) | |
22b75d0a | 506 | { |
e459dc7b | 507 | #ifdef BFD64 |
22b75d0a DM |
508 | Elf64_External_Rela *loc64; |
509 | ||
510 | loc64 = (Elf64_External_Rela *) s->contents; | |
511 | loc64 += s->reloc_count++; | |
512 | bfd_elf64_swap_reloca_out (abfd, rel, (bfd_byte *) loc64); | |
e459dc7b | 513 | #endif |
22b75d0a DM |
514 | } |
515 | ||
516 | static void | |
517 | sparc_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel) | |
518 | { | |
519 | Elf32_External_Rela *loc32; | |
520 | ||
521 | loc32 = (Elf32_External_Rela *) s->contents; | |
522 | loc32 += s->reloc_count++; | |
523 | bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32); | |
524 | } | |
525 | ||
526 | static bfd_vma | |
e459dc7b DM |
527 | sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, |
528 | bfd_vma index ATTRIBUTE_UNUSED, | |
529 | bfd_vma type ATTRIBUTE_UNUSED) | |
22b75d0a DM |
530 | { |
531 | return ELF64_R_INFO (index, | |
532 | (in_rel ? | |
533 | ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info), | |
534 | type) : type)); | |
535 | } | |
536 | ||
537 | static bfd_vma | |
538 | sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, | |
539 | bfd_vma index, bfd_vma type) | |
540 | { | |
541 | return ELF32_R_INFO (index, type); | |
542 | } | |
543 | ||
544 | static bfd_vma | |
545 | sparc_elf_r_symndx_64 (bfd_vma r_info) | |
546 | { | |
e8be8da4 DM |
547 | bfd_vma r_symndx = ELF32_R_SYM (r_info); |
548 | return (r_symndx >> 24); | |
22b75d0a DM |
549 | } |
550 | ||
551 | static bfd_vma | |
552 | sparc_elf_r_symndx_32 (bfd_vma r_info) | |
553 | { | |
554 | return ELF32_R_SYM (r_info); | |
555 | } | |
556 | ||
557 | /* PLT/GOT stuff */ | |
558 | ||
559 | #define PLT32_ENTRY_SIZE 12 | |
560 | #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE) | |
561 | ||
562 | /* The first four entries in a 32-bit procedure linkage table are reserved, | |
563 | and the initial contents are unimportant (we zero them out). | |
564 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
565 | supplement to see how this works. */ | |
566 | ||
567 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
568 | #define PLT32_ENTRY_WORD0 0x03000000 | |
569 | /* b,a .plt0. We fill in the offset later. */ | |
570 | #define PLT32_ENTRY_WORD1 0x30800000 | |
571 | /* nop. */ | |
572 | #define PLT32_ENTRY_WORD2 SPARC_NOP | |
573 | ||
574 | static int | |
575 | sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset, | |
576 | bfd_vma max ATTRIBUTE_UNUSED, | |
577 | bfd_vma *r_offset) | |
578 | { | |
579 | bfd_put_32 (output_bfd, | |
580 | PLT32_ENTRY_WORD0 + offset, | |
581 | splt->contents + offset); | |
582 | bfd_put_32 (output_bfd, | |
583 | (PLT32_ENTRY_WORD1 | |
584 | + (((- (offset + 4)) >> 2) & 0x3fffff)), | |
585 | splt->contents + offset + 4); | |
586 | bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2, | |
587 | splt->contents + offset + 8); | |
588 | ||
589 | *r_offset = offset; | |
590 | ||
591 | return offset / PLT32_ENTRY_SIZE - 4; | |
592 | } | |
593 | ||
594 | /* Both the headers and the entries are icache aligned. */ | |
595 | #define PLT64_ENTRY_SIZE 32 | |
596 | #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE) | |
597 | #define PLT64_LARGE_THRESHOLD 32768 | |
598 | ||
599 | static int | |
600 | sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset, | |
601 | bfd_vma max, bfd_vma *r_offset) | |
602 | { | |
603 | unsigned char *entry = splt->contents + offset; | |
604 | const unsigned int nop = SPARC_NOP; | |
605 | int index; | |
606 | ||
607 | if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) | |
608 | { | |
609 | unsigned int sethi, ba; | |
610 | ||
611 | *r_offset = offset; | |
612 | ||
613 | index = (offset / PLT64_ENTRY_SIZE); | |
614 | ||
615 | sethi = 0x03000000 | (index * PLT64_ENTRY_SIZE); | |
616 | ba = 0x30680000 | |
617 | | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff); | |
618 | ||
619 | bfd_put_32 (output_bfd, (bfd_vma) sethi, entry); | |
620 | bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4); | |
621 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); | |
622 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12); | |
623 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16); | |
624 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20); | |
625 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24); | |
626 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28); | |
627 | } | |
628 | else | |
629 | { | |
630 | unsigned char *ptr; | |
631 | unsigned int ldx; | |
632 | int block, last_block, ofs, last_ofs, chunks_this_block; | |
633 | const int insn_chunk_size = (6 * 4); | |
634 | const int ptr_chunk_size = (1 * 8); | |
635 | const int entries_per_block = 160; | |
636 | const int block_size = entries_per_block * (insn_chunk_size | |
637 | + ptr_chunk_size); | |
638 | ||
639 | /* Entries 32768 and higher are grouped into blocks of 160. | |
640 | The blocks are further subdivided into 160 sequences of | |
641 | 6 instructions and 160 pointers. If a block does not require | |
642 | the full 160 entries, let's say it requires N, then there | |
643 | will be N sequences of 6 instructions and N pointers. */ | |
644 | ||
645 | offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE); | |
646 | max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE); | |
647 | ||
648 | block = offset / block_size; | |
649 | last_block = max / block_size; | |
650 | if (block != last_block) | |
651 | { | |
652 | chunks_this_block = 160; | |
653 | } | |
654 | else | |
655 | { | |
656 | last_ofs = max % block_size; | |
657 | chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size); | |
658 | } | |
659 | ||
660 | ofs = offset % block_size; | |
661 | ||
662 | index = (PLT64_LARGE_THRESHOLD + | |
663 | (block * 160) + | |
664 | (ofs / insn_chunk_size)); | |
665 | ||
666 | ptr = splt->contents | |
667 | + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) | |
668 | + (block * block_size) | |
669 | + (chunks_this_block * insn_chunk_size) | |
670 | + (ofs / insn_chunk_size) * ptr_chunk_size; | |
671 | ||
672 | *r_offset = (bfd_vma) (ptr - splt->contents); | |
673 | ||
674 | ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff); | |
675 | ||
676 | /* mov %o7,%g5 | |
677 | call .+8 | |
678 | nop | |
679 | ldx [%o7+P],%g1 | |
680 | jmpl %o7+%g1,%g1 | |
681 | mov %g5,%o7 */ | |
682 | bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry); | |
683 | bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4); | |
684 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8); | |
685 | bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12); | |
686 | bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16); | |
687 | bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20); | |
688 | ||
689 | bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr); | |
690 | } | |
691 | ||
692 | return index - 4; | |
693 | } | |
694 | ||
695 | #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \ | |
696 | htab->put_word(bfd, val, ptr) | |
697 | ||
698 | #define SPARC_ELF_APPEND_RELA(htab, bfd, sec, rela) \ | |
699 | htab->append_rela(bfd, sec, rela) | |
700 | ||
701 | #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \ | |
702 | htab->r_info(in_rel, index, type) | |
703 | ||
704 | #define SPARC_ELF_R_SYMNDX(htab, r_info) \ | |
705 | htab->r_symndx(r_info) | |
706 | ||
707 | #define SPARC_ELF_WORD_BYTES(htab) \ | |
708 | htab->bytes_per_word | |
709 | ||
710 | #define SPARC_ELF_RELA_BYTES(htab) \ | |
711 | htab->bytes_per_rela | |
712 | ||
713 | #define SPARC_ELF_DTPOFF_RELOC(htab) \ | |
714 | htab->dtpoff_reloc | |
715 | ||
716 | #define SPARC_ELF_DTPMOD_RELOC(htab) \ | |
717 | htab->dtpmod_reloc | |
718 | ||
719 | #define SPARC_ELF_TPOFF_RELOC(htab) \ | |
720 | htab->tpoff_reloc | |
721 | ||
722 | #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \ | |
723 | htab->build_plt_entry (obfd, splt, off, max, r_off) | |
724 | ||
725 | /* Create an entry in an SPARC ELF linker hash table. */ | |
726 | ||
727 | static struct bfd_hash_entry * | |
728 | link_hash_newfunc (struct bfd_hash_entry *entry, | |
729 | struct bfd_hash_table *table, const char *string) | |
730 | { | |
731 | /* Allocate the structure if it has not already been allocated by a | |
732 | subclass. */ | |
733 | if (entry == NULL) | |
734 | { | |
735 | entry = bfd_hash_allocate (table, | |
736 | sizeof (struct _bfd_sparc_elf_link_hash_entry)); | |
737 | if (entry == NULL) | |
738 | return entry; | |
739 | } | |
740 | ||
741 | /* Call the allocation method of the superclass. */ | |
742 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
743 | if (entry != NULL) | |
744 | { | |
745 | struct _bfd_sparc_elf_link_hash_entry *eh; | |
746 | ||
747 | eh = (struct _bfd_sparc_elf_link_hash_entry *) entry; | |
748 | eh->dyn_relocs = NULL; | |
749 | eh->tls_type = GOT_UNKNOWN; | |
750 | } | |
751 | ||
752 | return entry; | |
753 | } | |
754 | ||
755 | /* The name of the dynamic interpreter. This is put in the .interp | |
756 | section. */ | |
757 | ||
758 | #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
759 | #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" | |
760 | ||
761 | /* Create a SPARC ELF linker hash table. */ | |
762 | ||
763 | struct bfd_link_hash_table * | |
764 | _bfd_sparc_elf_link_hash_table_create (bfd *abfd) | |
765 | { | |
766 | struct _bfd_sparc_elf_link_hash_table *ret; | |
767 | bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table); | |
768 | ||
769 | ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt); | |
770 | if (ret == NULL) | |
771 | return NULL; | |
772 | ||
773 | if (ABI_64_P (abfd)) | |
774 | { | |
775 | ret->put_word = sparc_put_word_64; | |
776 | ret->append_rela = sparc_elf_append_rela_64; | |
777 | ret->r_info = sparc_elf_r_info_64; | |
778 | ret->r_symndx = sparc_elf_r_symndx_64; | |
779 | ret->build_plt_entry = sparc64_plt_entry_build; | |
780 | ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64; | |
781 | ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64; | |
782 | ret->tpoff_reloc = R_SPARC_TLS_TPOFF64; | |
783 | ret->word_align_power = 3; | |
784 | ret->align_power_max = 4; | |
785 | ret->bytes_per_word = 8; | |
786 | ret->bytes_per_rela = sizeof (Elf64_External_Rela); | |
c2e70a82 | 787 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
22b75d0a DM |
788 | ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; |
789 | } | |
790 | else | |
791 | { | |
792 | ret->put_word = sparc_put_word_32; | |
793 | ret->append_rela = sparc_elf_append_rela_32; | |
794 | ret->r_info = sparc_elf_r_info_32; | |
795 | ret->r_symndx = sparc_elf_r_symndx_32; | |
796 | ret->build_plt_entry = sparc32_plt_entry_build; | |
797 | ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32; | |
798 | ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32; | |
799 | ret->tpoff_reloc = R_SPARC_TLS_TPOFF32; | |
800 | ret->word_align_power = 2; | |
801 | ret->align_power_max = 3; | |
802 | ret->bytes_per_word = 4; | |
803 | ret->bytes_per_rela = sizeof (Elf32_External_Rela); | |
c2e70a82 | 804 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
22b75d0a DM |
805 | ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; |
806 | } | |
807 | ||
808 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) | |
809 | { | |
810 | free (ret); | |
811 | return NULL; | |
812 | } | |
813 | ||
814 | return &ret->elf.root; | |
815 | } | |
816 | ||
817 | /* Create .got and .rela.got sections in DYNOBJ, and set up | |
818 | shortcuts to them in our hash table. */ | |
819 | ||
820 | static bfd_boolean | |
821 | create_got_section (bfd *dynobj, struct bfd_link_info *info) | |
822 | { | |
823 | struct _bfd_sparc_elf_link_hash_table *htab; | |
824 | ||
825 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
826 | return FALSE; | |
827 | ||
828 | htab = _bfd_sparc_elf_hash_table (info); | |
829 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
830 | BFD_ASSERT (htab->sgot != NULL); | |
831 | ||
3496cb2a L |
832 | htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got", |
833 | SEC_ALLOC | |
834 | | SEC_LOAD | |
835 | | SEC_HAS_CONTENTS | |
836 | | SEC_IN_MEMORY | |
837 | | SEC_LINKER_CREATED | |
838 | | SEC_READONLY); | |
22b75d0a | 839 | if (htab->srelgot == NULL |
22b75d0a DM |
840 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, |
841 | htab->word_align_power)) | |
842 | return FALSE; | |
843 | return TRUE; | |
844 | } | |
845 | ||
846 | /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and | |
847 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
848 | hash table. */ | |
849 | ||
850 | bfd_boolean | |
851 | _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj, | |
852 | struct bfd_link_info *info) | |
853 | { | |
854 | struct _bfd_sparc_elf_link_hash_table *htab; | |
855 | ||
856 | htab = _bfd_sparc_elf_hash_table (info); | |
857 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
858 | return FALSE; | |
859 | ||
860 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
861 | return FALSE; | |
862 | ||
863 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
864 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
865 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
866 | if (!info->shared) | |
867 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
868 | ||
869 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
870 | || (!info->shared && !htab->srelbss)) | |
871 | abort (); | |
872 | ||
873 | return TRUE; | |
874 | } | |
875 | ||
876 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
877 | ||
878 | void | |
879 | _bfd_sparc_elf_copy_indirect_symbol (const struct elf_backend_data *bed, | |
880 | struct elf_link_hash_entry *dir, | |
881 | struct elf_link_hash_entry *ind) | |
882 | { | |
883 | struct _bfd_sparc_elf_link_hash_entry *edir, *eind; | |
884 | ||
885 | edir = (struct _bfd_sparc_elf_link_hash_entry *) dir; | |
886 | eind = (struct _bfd_sparc_elf_link_hash_entry *) ind; | |
887 | ||
888 | if (eind->dyn_relocs != NULL) | |
889 | { | |
890 | if (edir->dyn_relocs != NULL) | |
891 | { | |
892 | struct _bfd_sparc_elf_dyn_relocs **pp; | |
893 | struct _bfd_sparc_elf_dyn_relocs *p; | |
894 | ||
895 | if (ind->root.type == bfd_link_hash_indirect) | |
896 | abort (); | |
897 | ||
898 | /* Add reloc counts against the weak sym to the strong sym | |
899 | list. Merge any entries against the same section. */ | |
900 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
901 | { | |
902 | struct _bfd_sparc_elf_dyn_relocs *q; | |
903 | ||
904 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
905 | if (q->sec == p->sec) | |
906 | { | |
907 | q->pc_count += p->pc_count; | |
908 | q->count += p->count; | |
909 | *pp = p->next; | |
910 | break; | |
911 | } | |
912 | if (q == NULL) | |
913 | pp = &p->next; | |
914 | } | |
915 | *pp = edir->dyn_relocs; | |
916 | } | |
917 | ||
918 | edir->dyn_relocs = eind->dyn_relocs; | |
919 | eind->dyn_relocs = NULL; | |
920 | } | |
921 | ||
922 | if (ind->root.type == bfd_link_hash_indirect | |
923 | && dir->got.refcount <= 0) | |
924 | { | |
925 | edir->tls_type = eind->tls_type; | |
926 | eind->tls_type = GOT_UNKNOWN; | |
927 | } | |
928 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
929 | } | |
930 | ||
931 | static int | |
932 | sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
933 | int r_type, int is_local) | |
934 | { | |
935 | if (! ABI_64_P (abfd) | |
936 | && r_type == R_SPARC_TLS_GD_HI22 | |
937 | && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd) | |
938 | r_type = R_SPARC_REV32; | |
939 | ||
940 | if (info->shared) | |
941 | return r_type; | |
942 | ||
943 | switch (r_type) | |
944 | { | |
945 | case R_SPARC_TLS_GD_HI22: | |
946 | if (is_local) | |
947 | return R_SPARC_TLS_LE_HIX22; | |
948 | return R_SPARC_TLS_IE_HI22; | |
949 | case R_SPARC_TLS_GD_LO10: | |
950 | if (is_local) | |
951 | return R_SPARC_TLS_LE_LOX10; | |
952 | return R_SPARC_TLS_IE_LO10; | |
953 | case R_SPARC_TLS_IE_HI22: | |
954 | if (is_local) | |
955 | return R_SPARC_TLS_LE_HIX22; | |
956 | return r_type; | |
957 | case R_SPARC_TLS_IE_LO10: | |
958 | if (is_local) | |
959 | return R_SPARC_TLS_LE_LOX10; | |
960 | return r_type; | |
961 | case R_SPARC_TLS_LDM_HI22: | |
962 | return R_SPARC_TLS_LE_HIX22; | |
963 | case R_SPARC_TLS_LDM_LO10: | |
964 | return R_SPARC_TLS_LE_LOX10; | |
965 | } | |
966 | ||
967 | return r_type; | |
968 | } | |
969 | \f | |
970 | /* Look through the relocs for a section during the first phase, and | |
971 | allocate space in the global offset table or procedure linkage | |
972 | table. */ | |
973 | ||
974 | bfd_boolean | |
975 | _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
976 | asection *sec, const Elf_Internal_Rela *relocs) | |
977 | { | |
978 | struct _bfd_sparc_elf_link_hash_table *htab; | |
979 | Elf_Internal_Shdr *symtab_hdr; | |
980 | struct elf_link_hash_entry **sym_hashes; | |
981 | bfd_vma *local_got_offsets; | |
982 | const Elf_Internal_Rela *rel; | |
983 | const Elf_Internal_Rela *rel_end; | |
984 | asection *sreloc; | |
985 | int num_relocs; | |
986 | bfd_boolean checked_tlsgd = FALSE; | |
987 | ||
988 | if (info->relocatable) | |
989 | return TRUE; | |
990 | ||
991 | htab = _bfd_sparc_elf_hash_table (info); | |
992 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
993 | sym_hashes = elf_sym_hashes (abfd); | |
994 | local_got_offsets = elf_local_got_offsets (abfd); | |
995 | ||
996 | sreloc = NULL; | |
997 | ||
998 | if (ABI_64_P (abfd)) | |
999 | num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr); | |
1000 | else | |
1001 | num_relocs = sec->reloc_count; | |
1002 | rel_end = relocs + num_relocs; | |
1003 | for (rel = relocs; rel < rel_end; rel++) | |
1004 | { | |
1005 | unsigned int r_type; | |
1006 | unsigned long r_symndx; | |
1007 | struct elf_link_hash_entry *h; | |
1008 | ||
1009 | r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); | |
1010 | r_type = SPARC_ELF_R_TYPE (rel->r_info); | |
1011 | ||
1012 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1013 | { | |
1014 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), | |
1015 | abfd, r_symndx); | |
1016 | return FALSE; | |
1017 | } | |
1018 | ||
1019 | if (r_symndx < symtab_hdr->sh_info) | |
1020 | h = NULL; | |
1021 | else | |
973a3492 L |
1022 | { |
1023 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1024 | while (h->root.type == bfd_link_hash_indirect | |
1025 | || h->root.type == bfd_link_hash_warning) | |
1026 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1027 | } | |
22b75d0a DM |
1028 | |
1029 | /* Compatibility with old R_SPARC_REV32 reloc conflicting | |
1030 | with R_SPARC_TLS_GD_HI22. */ | |
1031 | if (! ABI_64_P (abfd) && ! checked_tlsgd) | |
1032 | switch (r_type) | |
1033 | { | |
1034 | case R_SPARC_TLS_GD_HI22: | |
1035 | { | |
1036 | const Elf_Internal_Rela *relt; | |
1037 | ||
1038 | for (relt = rel + 1; relt < rel_end; relt++) | |
1039 | if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10 | |
1040 | || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD | |
1041 | || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL) | |
1042 | break; | |
1043 | checked_tlsgd = TRUE; | |
1044 | _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end; | |
1045 | } | |
1046 | break; | |
1047 | case R_SPARC_TLS_GD_LO10: | |
1048 | case R_SPARC_TLS_GD_ADD: | |
1049 | case R_SPARC_TLS_GD_CALL: | |
1050 | checked_tlsgd = TRUE; | |
1051 | _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE; | |
1052 | break; | |
1053 | } | |
1054 | ||
1055 | r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL); | |
1056 | switch (r_type) | |
1057 | { | |
1058 | case R_SPARC_TLS_LDM_HI22: | |
1059 | case R_SPARC_TLS_LDM_LO10: | |
1060 | htab->tls_ldm_got.refcount += 1; | |
1061 | break; | |
1062 | ||
1063 | case R_SPARC_TLS_LE_HIX22: | |
1064 | case R_SPARC_TLS_LE_LOX10: | |
1065 | if (info->shared) | |
1066 | goto r_sparc_plt32; | |
1067 | break; | |
1068 | ||
1069 | case R_SPARC_TLS_IE_HI22: | |
1070 | case R_SPARC_TLS_IE_LO10: | |
1071 | if (info->shared) | |
1072 | info->flags |= DF_STATIC_TLS; | |
1073 | /* Fall through */ | |
1074 | ||
1075 | case R_SPARC_GOT10: | |
1076 | case R_SPARC_GOT13: | |
1077 | case R_SPARC_GOT22: | |
1078 | case R_SPARC_TLS_GD_HI22: | |
1079 | case R_SPARC_TLS_GD_LO10: | |
1080 | /* This symbol requires a global offset table entry. */ | |
1081 | { | |
1082 | int tls_type, old_tls_type; | |
1083 | ||
1084 | switch (r_type) | |
1085 | { | |
1086 | default: | |
1087 | case R_SPARC_GOT10: | |
1088 | case R_SPARC_GOT13: | |
1089 | case R_SPARC_GOT22: | |
1090 | tls_type = GOT_NORMAL; | |
1091 | break; | |
1092 | case R_SPARC_TLS_GD_HI22: | |
1093 | case R_SPARC_TLS_GD_LO10: | |
1094 | tls_type = GOT_TLS_GD; | |
1095 | break; | |
1096 | case R_SPARC_TLS_IE_HI22: | |
1097 | case R_SPARC_TLS_IE_LO10: | |
1098 | tls_type = GOT_TLS_IE; | |
1099 | break; | |
1100 | } | |
1101 | ||
1102 | if (h != NULL) | |
1103 | { | |
1104 | h->got.refcount += 1; | |
1105 | old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; | |
1106 | } | |
1107 | else | |
1108 | { | |
1109 | bfd_signed_vma *local_got_refcounts; | |
1110 | ||
1111 | /* This is a global offset table entry for a local symbol. */ | |
1112 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1113 | if (local_got_refcounts == NULL) | |
1114 | { | |
1115 | bfd_size_type size; | |
1116 | ||
1117 | size = symtab_hdr->sh_info; | |
1118 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
1119 | local_got_refcounts = ((bfd_signed_vma *) | |
1120 | bfd_zalloc (abfd, size)); | |
1121 | if (local_got_refcounts == NULL) | |
1122 | return FALSE; | |
1123 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1124 | _bfd_sparc_elf_local_got_tls_type (abfd) | |
1125 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
1126 | } | |
1127 | local_got_refcounts[r_symndx] += 1; | |
1128 | old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx]; | |
1129 | } | |
1130 | ||
1131 | /* If a TLS symbol is accessed using IE at least once, | |
1132 | there is no point to use dynamic model for it. */ | |
1133 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
1134 | && (old_tls_type != GOT_TLS_GD | |
1135 | || tls_type != GOT_TLS_IE)) | |
1136 | { | |
1137 | if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) | |
1138 | tls_type = old_tls_type; | |
1139 | else | |
1140 | { | |
1141 | (*_bfd_error_handler) | |
1142 | (_("%B: `%s' accessed both as normal and thread local symbol"), | |
1143 | abfd, h ? h->root.root.string : "<local>"); | |
1144 | return FALSE; | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | if (old_tls_type != tls_type) | |
1149 | { | |
1150 | if (h != NULL) | |
1151 | _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type; | |
1152 | else | |
1153 | _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | if (htab->sgot == NULL) | |
1158 | { | |
1159 | if (htab->elf.dynobj == NULL) | |
1160 | htab->elf.dynobj = abfd; | |
1161 | if (!create_got_section (htab->elf.dynobj, info)) | |
1162 | return FALSE; | |
1163 | } | |
1164 | break; | |
1165 | ||
1166 | case R_SPARC_TLS_GD_CALL: | |
1167 | case R_SPARC_TLS_LDM_CALL: | |
1168 | if (info->shared) | |
1169 | { | |
1170 | /* These are basically R_SPARC_TLS_WPLT30 relocs against | |
1171 | __tls_get_addr. */ | |
1172 | struct bfd_link_hash_entry *bh = NULL; | |
1173 | if (! _bfd_generic_link_add_one_symbol (info, abfd, | |
1174 | "__tls_get_addr", 0, | |
1175 | bfd_und_section_ptr, 0, | |
1176 | NULL, FALSE, FALSE, | |
1177 | &bh)) | |
1178 | return FALSE; | |
1179 | h = (struct elf_link_hash_entry *) bh; | |
1180 | } | |
1181 | else | |
1182 | break; | |
1183 | /* Fall through */ | |
1184 | ||
1185 | case R_SPARC_PLT32: | |
1186 | case R_SPARC_WPLT30: | |
1187 | case R_SPARC_HIPLT22: | |
1188 | case R_SPARC_LOPLT10: | |
1189 | case R_SPARC_PCPLT32: | |
1190 | case R_SPARC_PCPLT22: | |
1191 | case R_SPARC_PCPLT10: | |
1192 | case R_SPARC_PLT64: | |
1193 | /* This symbol requires a procedure linkage table entry. We | |
1194 | actually build the entry in adjust_dynamic_symbol, | |
1195 | because this might be a case of linking PIC code without | |
1196 | linking in any dynamic objects, in which case we don't | |
1197 | need to generate a procedure linkage table after all. */ | |
1198 | ||
1199 | if (h == NULL) | |
1200 | { | |
1201 | if (! ABI_64_P (abfd)) | |
1202 | { | |
1203 | /* The Solaris native assembler will generate a WPLT30 | |
1204 | reloc for a local symbol if you assemble a call from | |
1205 | one section to another when using -K pic. We treat | |
1206 | it as WDISP30. */ | |
1207 | if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) | |
1208 | goto r_sparc_plt32; | |
1209 | break; | |
1210 | } | |
1211 | ||
1212 | /* It does not make sense to have a procedure linkage | |
1213 | table entry for a local symbol. */ | |
1214 | bfd_set_error (bfd_error_bad_value); | |
1215 | return FALSE; | |
1216 | } | |
1217 | ||
1218 | h->needs_plt = 1; | |
1219 | ||
1220 | { | |
1221 | int this_r_type; | |
1222 | ||
1223 | this_r_type = SPARC_ELF_R_TYPE (rel->r_info); | |
1224 | if (this_r_type == R_SPARC_PLT32 | |
1225 | || this_r_type == R_SPARC_PLT64) | |
1226 | goto r_sparc_plt32; | |
1227 | } | |
1228 | h->plt.refcount += 1; | |
1229 | break; | |
1230 | ||
1231 | case R_SPARC_PC10: | |
1232 | case R_SPARC_PC22: | |
1233 | case R_SPARC_PC_HH22: | |
1234 | case R_SPARC_PC_HM10: | |
1235 | case R_SPARC_PC_LM22: | |
1236 | if (h != NULL) | |
1237 | h->non_got_ref = 1; | |
1238 | ||
1239 | if (h != NULL | |
1240 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1241 | break; | |
1242 | /* Fall through. */ | |
1243 | ||
1244 | case R_SPARC_DISP8: | |
1245 | case R_SPARC_DISP16: | |
1246 | case R_SPARC_DISP32: | |
1247 | case R_SPARC_DISP64: | |
1248 | case R_SPARC_WDISP30: | |
1249 | case R_SPARC_WDISP22: | |
1250 | case R_SPARC_WDISP19: | |
1251 | case R_SPARC_WDISP16: | |
1252 | case R_SPARC_8: | |
1253 | case R_SPARC_16: | |
1254 | case R_SPARC_32: | |
1255 | case R_SPARC_HI22: | |
1256 | case R_SPARC_22: | |
1257 | case R_SPARC_13: | |
1258 | case R_SPARC_LO10: | |
1259 | case R_SPARC_UA16: | |
1260 | case R_SPARC_UA32: | |
1261 | case R_SPARC_10: | |
1262 | case R_SPARC_11: | |
1263 | case R_SPARC_64: | |
1264 | case R_SPARC_OLO10: | |
1265 | case R_SPARC_HH22: | |
1266 | case R_SPARC_HM10: | |
1267 | case R_SPARC_LM22: | |
1268 | case R_SPARC_7: | |
1269 | case R_SPARC_5: | |
1270 | case R_SPARC_6: | |
1271 | case R_SPARC_HIX22: | |
1272 | case R_SPARC_LOX10: | |
1273 | case R_SPARC_H44: | |
1274 | case R_SPARC_M44: | |
1275 | case R_SPARC_L44: | |
1276 | case R_SPARC_UA64: | |
1277 | if (h != NULL) | |
1278 | h->non_got_ref = 1; | |
1279 | ||
1280 | r_sparc_plt32: | |
1281 | if (h != NULL && !info->shared) | |
1282 | { | |
1283 | /* We may need a .plt entry if the function this reloc | |
1284 | refers to is in a shared lib. */ | |
1285 | h->plt.refcount += 1; | |
1286 | } | |
1287 | ||
1288 | /* If we are creating a shared library, and this is a reloc | |
1289 | against a global symbol, or a non PC relative reloc | |
1290 | against a local symbol, then we need to copy the reloc | |
1291 | into the shared library. However, if we are linking with | |
1292 | -Bsymbolic, we do not need to copy a reloc against a | |
1293 | global symbol which is defined in an object we are | |
1294 | including in the link (i.e., DEF_REGULAR is set). At | |
1295 | this point we have not seen all the input files, so it is | |
1296 | possible that DEF_REGULAR is not set now but will be set | |
1297 | later (it is never cleared). In case of a weak definition, | |
1298 | DEF_REGULAR may be cleared later by a strong definition in | |
1299 | a shared library. We account for that possibility below by | |
1300 | storing information in the relocs_copied field of the hash | |
1301 | table entry. A similar situation occurs when creating | |
1302 | shared libraries and symbol visibility changes render the | |
1303 | symbol local. | |
1304 | ||
1305 | If on the other hand, we are creating an executable, we | |
1306 | may need to keep relocations for symbols satisfied by a | |
1307 | dynamic library if we manage to avoid copy relocs for the | |
1308 | symbol. */ | |
1309 | if ((info->shared | |
1310 | && (sec->flags & SEC_ALLOC) != 0 | |
1311 | && (! _bfd_sparc_elf_howto_table[r_type].pc_relative | |
1312 | || (h != NULL | |
1313 | && (! info->symbolic | |
1314 | || h->root.type == bfd_link_hash_defweak | |
1315 | || !h->def_regular)))) | |
1316 | || (!info->shared | |
1317 | && (sec->flags & SEC_ALLOC) != 0 | |
1318 | && h != NULL | |
1319 | && (h->root.type == bfd_link_hash_defweak | |
1320 | || !h->def_regular))) | |
1321 | { | |
1322 | struct _bfd_sparc_elf_dyn_relocs *p; | |
1323 | struct _bfd_sparc_elf_dyn_relocs **head; | |
1324 | ||
1325 | /* When creating a shared object, we must copy these | |
1326 | relocs into the output file. We create a reloc | |
1327 | section in dynobj and make room for the reloc. */ | |
1328 | if (sreloc == NULL) | |
1329 | { | |
1330 | const char *name; | |
1331 | bfd *dynobj; | |
1332 | ||
1333 | name = (bfd_elf_string_from_elf_section | |
1334 | (abfd, | |
1335 | elf_elfheader (abfd)->e_shstrndx, | |
1336 | elf_section_data (sec)->rel_hdr.sh_name)); | |
1337 | if (name == NULL) | |
1338 | return FALSE; | |
1339 | ||
1340 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1341 | && strcmp (bfd_get_section_name (abfd, sec), | |
1342 | name + 5) == 0); | |
1343 | ||
1344 | if (htab->elf.dynobj == NULL) | |
1345 | htab->elf.dynobj = abfd; | |
1346 | dynobj = htab->elf.dynobj; | |
1347 | ||
1348 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1349 | if (sreloc == NULL) | |
1350 | { | |
1351 | flagword flags; | |
1352 | ||
22b75d0a DM |
1353 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
1354 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1355 | if ((sec->flags & SEC_ALLOC) != 0) | |
1356 | flags |= SEC_ALLOC | SEC_LOAD; | |
3496cb2a L |
1357 | sreloc = bfd_make_section_with_flags (dynobj, |
1358 | name, | |
1359 | flags); | |
22b75d0a | 1360 | if (sreloc == NULL |
22b75d0a DM |
1361 | || ! bfd_set_section_alignment (dynobj, sreloc, |
1362 | htab->word_align_power)) | |
1363 | return FALSE; | |
1364 | } | |
1365 | elf_section_data (sec)->sreloc = sreloc; | |
1366 | } | |
1367 | ||
1368 | /* If this is a global symbol, we count the number of | |
1369 | relocations we need for this symbol. */ | |
1370 | if (h != NULL) | |
1371 | head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs; | |
1372 | else | |
1373 | { | |
1374 | /* Track dynamic relocs needed for local syms too. | |
1375 | We really need local syms available to do this | |
1376 | easily. Oh well. */ | |
1377 | ||
1378 | asection *s; | |
1379 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1380 | sec, r_symndx); | |
1381 | if (s == NULL) | |
1382 | return FALSE; | |
1383 | ||
1384 | head = ((struct _bfd_sparc_elf_dyn_relocs **) | |
1385 | &elf_section_data (s)->local_dynrel); | |
1386 | } | |
1387 | ||
1388 | p = *head; | |
1389 | if (p == NULL || p->sec != sec) | |
1390 | { | |
1391 | bfd_size_type amt = sizeof *p; | |
1392 | p = ((struct _bfd_sparc_elf_dyn_relocs *) | |
1393 | bfd_alloc (htab->elf.dynobj, amt)); | |
1394 | if (p == NULL) | |
1395 | return FALSE; | |
1396 | p->next = *head; | |
1397 | *head = p; | |
1398 | p->sec = sec; | |
1399 | p->count = 0; | |
1400 | p->pc_count = 0; | |
1401 | } | |
1402 | ||
1403 | p->count += 1; | |
1404 | if (_bfd_sparc_elf_howto_table[r_type].pc_relative) | |
1405 | p->pc_count += 1; | |
1406 | } | |
1407 | ||
1408 | break; | |
1409 | ||
1410 | case R_SPARC_GNU_VTINHERIT: | |
1411 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1412 | return FALSE; | |
1413 | break; | |
1414 | ||
1415 | case R_SPARC_GNU_VTENTRY: | |
1416 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
1417 | return FALSE; | |
1418 | break; | |
1419 | ||
1420 | case R_SPARC_REGISTER: | |
1421 | /* Nothing to do. */ | |
1422 | break; | |
1423 | ||
1424 | default: | |
1425 | break; | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | return TRUE; | |
1430 | } | |
1431 | \f | |
1432 | asection * | |
1433 | _bfd_sparc_elf_gc_mark_hook (asection *sec, | |
1434 | struct bfd_link_info *info, | |
1435 | Elf_Internal_Rela *rel, | |
1436 | struct elf_link_hash_entry *h, | |
1437 | Elf_Internal_Sym *sym) | |
1438 | { | |
1439 | if (h != NULL) | |
1440 | { | |
1441 | struct _bfd_sparc_elf_link_hash_table *htab; | |
1442 | ||
1443 | htab = _bfd_sparc_elf_hash_table (info); | |
1444 | switch (SPARC_ELF_R_TYPE (rel->r_info)) | |
1445 | { | |
1446 | case R_SPARC_GNU_VTINHERIT: | |
1447 | case R_SPARC_GNU_VTENTRY: | |
1448 | break; | |
1449 | ||
1450 | default: | |
1451 | switch (h->root.type) | |
1452 | { | |
1453 | case bfd_link_hash_defined: | |
1454 | case bfd_link_hash_defweak: | |
1455 | return h->root.u.def.section; | |
1456 | ||
1457 | case bfd_link_hash_common: | |
1458 | return h->root.u.c.p->section; | |
1459 | ||
1460 | default: | |
1461 | break; | |
1462 | } | |
1463 | } | |
1464 | } | |
1465 | else | |
1466 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
1467 | ||
1468 | return NULL; | |
1469 | } | |
1470 | ||
1471 | /* Update the got entry reference counts for the section being removed. */ | |
1472 | bfd_boolean | |
1473 | _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, | |
1474 | asection *sec, const Elf_Internal_Rela *relocs) | |
1475 | { | |
1476 | struct _bfd_sparc_elf_link_hash_table *htab; | |
1477 | Elf_Internal_Shdr *symtab_hdr; | |
1478 | struct elf_link_hash_entry **sym_hashes; | |
1479 | bfd_signed_vma *local_got_refcounts; | |
1480 | const Elf_Internal_Rela *rel, *relend; | |
1481 | ||
1482 | elf_section_data (sec)->local_dynrel = NULL; | |
1483 | ||
1484 | htab = _bfd_sparc_elf_hash_table (info); | |
1485 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1486 | sym_hashes = elf_sym_hashes (abfd); | |
1487 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1488 | ||
1489 | relend = relocs + sec->reloc_count; | |
1490 | for (rel = relocs; rel < relend; rel++) | |
1491 | { | |
1492 | unsigned long r_symndx; | |
1493 | unsigned int r_type; | |
1494 | struct elf_link_hash_entry *h = NULL; | |
1495 | ||
1496 | r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); | |
1497 | if (r_symndx >= symtab_hdr->sh_info) | |
1498 | { | |
1499 | struct _bfd_sparc_elf_link_hash_entry *eh; | |
1500 | struct _bfd_sparc_elf_dyn_relocs **pp; | |
1501 | struct _bfd_sparc_elf_dyn_relocs *p; | |
1502 | ||
1503 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1504 | while (h->root.type == bfd_link_hash_indirect | |
1505 | || h->root.type == bfd_link_hash_warning) | |
1506 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1507 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; | |
1508 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1509 | if (p->sec == sec) | |
1510 | { | |
1511 | /* Everything must go for SEC. */ | |
1512 | *pp = p->next; | |
1513 | break; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | r_type = SPARC_ELF_R_TYPE (rel->r_info); | |
1518 | r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL); | |
1519 | switch (r_type) | |
1520 | { | |
1521 | case R_SPARC_TLS_LDM_HI22: | |
1522 | case R_SPARC_TLS_LDM_LO10: | |
1523 | if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0) | |
1524 | _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1525 | break; | |
1526 | ||
1527 | case R_SPARC_TLS_GD_HI22: | |
1528 | case R_SPARC_TLS_GD_LO10: | |
1529 | case R_SPARC_TLS_IE_HI22: | |
1530 | case R_SPARC_TLS_IE_LO10: | |
1531 | case R_SPARC_GOT10: | |
1532 | case R_SPARC_GOT13: | |
1533 | case R_SPARC_GOT22: | |
1534 | if (h != NULL) | |
1535 | { | |
1536 | if (h->got.refcount > 0) | |
1537 | h->got.refcount--; | |
1538 | } | |
1539 | else | |
1540 | { | |
1541 | if (local_got_refcounts[r_symndx] > 0) | |
1542 | local_got_refcounts[r_symndx]--; | |
1543 | } | |
1544 | break; | |
1545 | ||
1546 | case R_SPARC_PC10: | |
1547 | case R_SPARC_PC22: | |
1548 | case R_SPARC_PC_HH22: | |
1549 | case R_SPARC_PC_HM10: | |
1550 | case R_SPARC_PC_LM22: | |
1551 | if (h != NULL | |
1552 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1553 | break; | |
1554 | /* Fall through. */ | |
1555 | ||
1556 | case R_SPARC_DISP8: | |
1557 | case R_SPARC_DISP16: | |
1558 | case R_SPARC_DISP32: | |
1559 | case R_SPARC_DISP64: | |
1560 | case R_SPARC_WDISP30: | |
1561 | case R_SPARC_WDISP22: | |
1562 | case R_SPARC_WDISP19: | |
1563 | case R_SPARC_WDISP16: | |
1564 | case R_SPARC_8: | |
1565 | case R_SPARC_16: | |
1566 | case R_SPARC_32: | |
1567 | case R_SPARC_HI22: | |
1568 | case R_SPARC_22: | |
1569 | case R_SPARC_13: | |
1570 | case R_SPARC_LO10: | |
1571 | case R_SPARC_UA16: | |
1572 | case R_SPARC_UA32: | |
1573 | case R_SPARC_PLT32: | |
1574 | case R_SPARC_10: | |
1575 | case R_SPARC_11: | |
1576 | case R_SPARC_64: | |
1577 | case R_SPARC_OLO10: | |
1578 | case R_SPARC_HH22: | |
1579 | case R_SPARC_HM10: | |
1580 | case R_SPARC_LM22: | |
1581 | case R_SPARC_7: | |
1582 | case R_SPARC_5: | |
1583 | case R_SPARC_6: | |
1584 | case R_SPARC_HIX22: | |
1585 | case R_SPARC_LOX10: | |
1586 | case R_SPARC_H44: | |
1587 | case R_SPARC_M44: | |
1588 | case R_SPARC_L44: | |
1589 | case R_SPARC_UA64: | |
1590 | if (info->shared) | |
1591 | break; | |
1592 | /* Fall through. */ | |
1593 | ||
1594 | case R_SPARC_WPLT30: | |
1595 | if (h != NULL) | |
1596 | { | |
1597 | if (h->plt.refcount > 0) | |
1598 | h->plt.refcount--; | |
1599 | } | |
1600 | break; | |
1601 | ||
1602 | default: | |
1603 | break; | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | return TRUE; | |
1608 | } | |
1609 | ||
1610 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1611 | regular object. The current definition is in some section of the | |
1612 | dynamic object, but we're not including those sections. We have to | |
1613 | change the definition to something the rest of the link can | |
1614 | understand. */ | |
1615 | ||
1616 | bfd_boolean | |
1617 | _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
1618 | struct elf_link_hash_entry *h) | |
1619 | { | |
1620 | struct _bfd_sparc_elf_link_hash_table *htab; | |
1621 | struct _bfd_sparc_elf_link_hash_entry * eh; | |
1622 | struct _bfd_sparc_elf_dyn_relocs *p; | |
1623 | asection *s; | |
1624 | unsigned int power_of_two; | |
1625 | ||
1626 | htab = _bfd_sparc_elf_hash_table (info); | |
1627 | ||
1628 | /* Make sure we know what is going on here. */ | |
1629 | BFD_ASSERT (htab->elf.dynobj != NULL | |
1630 | && (h->needs_plt | |
1631 | || h->u.weakdef != NULL | |
1632 | || (h->def_dynamic | |
1633 | && h->ref_regular | |
1634 | && !h->def_regular))); | |
1635 | ||
1636 | /* If this is a function, put it in the procedure linkage table. We | |
1637 | will fill in the contents of the procedure linkage table later | |
1638 | (although we could actually do it here). The STT_NOTYPE | |
1639 | condition is a hack specifically for the Oracle libraries | |
1640 | delivered for Solaris; for some inexplicable reason, they define | |
1641 | some of their functions as STT_NOTYPE when they really should be | |
1642 | STT_FUNC. */ | |
1643 | if (h->type == STT_FUNC | |
1644 | || h->needs_plt | |
1645 | || (h->type == STT_NOTYPE | |
1646 | && (h->root.type == bfd_link_hash_defined | |
1647 | || h->root.type == bfd_link_hash_defweak) | |
1648 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
1649 | { | |
1650 | if (h->plt.refcount <= 0 | |
1651 | || (! info->shared | |
1652 | && !h->def_dynamic | |
1653 | && !h->ref_dynamic | |
1654 | && h->root.type != bfd_link_hash_undefweak | |
1655 | && h->root.type != bfd_link_hash_undefined)) | |
1656 | { | |
1657 | /* This case can occur if we saw a WPLT30 reloc in an input | |
1658 | file, but the symbol was never referred to by a dynamic | |
1659 | object, or if all references were garbage collected. In | |
1660 | such a case, we don't actually need to build a procedure | |
1661 | linkage table, and we can just do a WDISP30 reloc instead. */ | |
1662 | h->plt.offset = (bfd_vma) -1; | |
1663 | h->needs_plt = 0; | |
1664 | } | |
1665 | ||
1666 | return TRUE; | |
1667 | } | |
1668 | else | |
1669 | h->plt.offset = (bfd_vma) -1; | |
1670 | ||
1671 | /* If this is a weak symbol, and there is a real definition, the | |
1672 | processor independent code will have arranged for us to see the | |
1673 | real definition first, and we can just use the same value. */ | |
1674 | if (h->u.weakdef != NULL) | |
1675 | { | |
1676 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
1677 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1678 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1679 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
1680 | return TRUE; | |
1681 | } | |
1682 | ||
1683 | /* This is a reference to a symbol defined by a dynamic object which | |
1684 | is not a function. */ | |
1685 | ||
1686 | /* If we are creating a shared library, we must presume that the | |
1687 | only references to the symbol are via the global offset table. | |
1688 | For such cases we need not do anything here; the relocations will | |
1689 | be handled correctly by relocate_section. */ | |
1690 | if (info->shared) | |
1691 | return TRUE; | |
1692 | ||
1693 | /* If there are no references to this symbol that do not use the | |
1694 | GOT, we don't need to generate a copy reloc. */ | |
1695 | if (!h->non_got_ref) | |
1696 | return TRUE; | |
1697 | ||
1698 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; | |
1699 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1700 | { | |
1701 | s = p->sec->output_section; | |
1702 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1703 | break; | |
1704 | } | |
1705 | ||
1706 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1707 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1708 | if (p == NULL) | |
1709 | { | |
1710 | h->non_got_ref = 0; | |
1711 | return TRUE; | |
1712 | } | |
1713 | ||
1714 | /* We must allocate the symbol in our .dynbss section, which will | |
1715 | become part of the .bss section of the executable. There will be | |
1716 | an entry for this symbol in the .dynsym section. The dynamic | |
1717 | object will contain position independent code, so all references | |
1718 | from the dynamic object to this symbol will go through the global | |
1719 | offset table. The dynamic linker will use the .dynsym entry to | |
1720 | determine the address it must put in the global offset table, so | |
1721 | both the dynamic object and the regular object will refer to the | |
1722 | same memory location for the variable. */ | |
1723 | ||
1724 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
1725 | to copy the initial value out of the dynamic object and into the | |
1726 | runtime process image. We need to remember the offset into the | |
1727 | .rel.bss section we are going to use. */ | |
1728 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1729 | { | |
1730 | htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab); | |
1731 | h->needs_copy = 1; | |
1732 | } | |
1733 | ||
1734 | /* We need to figure out the alignment required for this symbol. I | |
1735 | have no idea how ELF linkers handle this. */ | |
1736 | power_of_two = bfd_log2 (h->size); | |
1737 | if (power_of_two > htab->align_power_max) | |
1738 | power_of_two = htab->align_power_max; | |
1739 | ||
1740 | /* Apply the required alignment. */ | |
1741 | s = htab->sdynbss; | |
1742 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
1743 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1744 | { | |
1745 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
1746 | return FALSE; | |
1747 | } | |
1748 | ||
1749 | /* Define the symbol as being at this point in the section. */ | |
1750 | h->root.u.def.section = s; | |
1751 | h->root.u.def.value = s->size; | |
1752 | ||
1753 | /* Increment the section size to make room for the symbol. */ | |
1754 | s->size += h->size; | |
1755 | ||
1756 | return TRUE; | |
1757 | } | |
1758 | ||
1759 | /* Allocate space in .plt, .got and associated reloc sections for | |
1760 | dynamic relocs. */ | |
1761 | ||
1762 | static bfd_boolean | |
1763 | allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
1764 | { | |
1765 | struct bfd_link_info *info; | |
1766 | struct _bfd_sparc_elf_link_hash_table *htab; | |
1767 | struct _bfd_sparc_elf_link_hash_entry *eh; | |
1768 | struct _bfd_sparc_elf_dyn_relocs *p; | |
1769 | ||
1770 | if (h->root.type == bfd_link_hash_indirect) | |
1771 | return TRUE; | |
1772 | ||
1773 | if (h->root.type == bfd_link_hash_warning) | |
1774 | /* When warning symbols are created, they **replace** the "real" | |
1775 | entry in the hash table, thus we never get to see the real | |
1776 | symbol in a hash traversal. So look at it now. */ | |
1777 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1778 | ||
1779 | info = (struct bfd_link_info *) inf; | |
1780 | htab = _bfd_sparc_elf_hash_table (info); | |
1781 | ||
1782 | if (htab->elf.dynamic_sections_created | |
1783 | && h->plt.refcount > 0) | |
1784 | { | |
1785 | /* Make sure this symbol is output as a dynamic symbol. | |
1786 | Undefined weak syms won't yet be marked as dynamic. */ | |
1787 | if (h->dynindx == -1 | |
1788 | && !h->forced_local) | |
1789 | { | |
1790 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1791 | return FALSE; | |
1792 | } | |
1793 | ||
1794 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
1795 | { | |
1796 | asection *s = htab->splt; | |
1797 | ||
1798 | /* The first four entries in .plt is reserved. */ | |
1799 | if (s->size == 0) | |
1800 | s->size = (SPARC_ELF_WORD_BYTES(htab) == 8 ? | |
1801 | PLT64_HEADER_SIZE : PLT32_HEADER_SIZE); | |
1802 | ||
1803 | /* The procedure linkage table size is bounded by the magnitude | |
1804 | of the offset we can describe in the entry. */ | |
1805 | if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ? | |
e8be8da4 | 1806 | (((bfd_vma)1 << 31) << 1) : 0x400000)) |
22b75d0a DM |
1807 | { |
1808 | bfd_set_error (bfd_error_bad_value); | |
1809 | return FALSE; | |
1810 | } | |
1811 | ||
1812 | if (SPARC_ELF_WORD_BYTES(htab) == 8 | |
1813 | && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) | |
1814 | { | |
1815 | bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE; | |
1816 | ||
1817 | ||
1818 | off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE; | |
1819 | ||
1820 | h->plt.offset = (s->size - (off * 8)); | |
1821 | } | |
1822 | else | |
1823 | h->plt.offset = s->size; | |
1824 | ||
1825 | /* If this symbol is not defined in a regular file, and we are | |
1826 | not generating a shared library, then set the symbol to this | |
1827 | location in the .plt. This is required to make function | |
1828 | pointers compare as equal between the normal executable and | |
1829 | the shared library. */ | |
1830 | if (! info->shared | |
1831 | && !h->def_regular) | |
1832 | { | |
1833 | h->root.u.def.section = s; | |
1834 | h->root.u.def.value = h->plt.offset; | |
1835 | } | |
1836 | ||
1837 | /* Make room for this entry. */ | |
1838 | s->size += (SPARC_ELF_WORD_BYTES(htab) == 8 ? | |
1839 | PLT64_ENTRY_SIZE : PLT32_ENTRY_SIZE); | |
1840 | ||
1841 | /* We also need to make an entry in the .rela.plt section. */ | |
1842 | htab->srelplt->size += SPARC_ELF_RELA_BYTES (htab); | |
1843 | } | |
1844 | else | |
1845 | { | |
1846 | h->plt.offset = (bfd_vma) -1; | |
1847 | h->needs_plt = 0; | |
1848 | } | |
1849 | } | |
1850 | else | |
1851 | { | |
1852 | h->plt.offset = (bfd_vma) -1; | |
1853 | h->needs_plt = 0; | |
1854 | } | |
1855 | ||
1856 | /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary, | |
1857 | make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */ | |
1858 | if (h->got.refcount > 0 | |
1859 | && !info->shared | |
1860 | && h->dynindx == -1 | |
1861 | && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE) | |
1862 | h->got.offset = (bfd_vma) -1; | |
1863 | else if (h->got.refcount > 0) | |
1864 | { | |
1865 | asection *s; | |
1866 | bfd_boolean dyn; | |
1867 | int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; | |
1868 | ||
1869 | /* Make sure this symbol is output as a dynamic symbol. | |
1870 | Undefined weak syms won't yet be marked as dynamic. */ | |
1871 | if (h->dynindx == -1 | |
1872 | && !h->forced_local) | |
1873 | { | |
1874 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1875 | return FALSE; | |
1876 | } | |
1877 | ||
1878 | s = htab->sgot; | |
1879 | h->got.offset = s->size; | |
1880 | s->size += SPARC_ELF_WORD_BYTES (htab); | |
1881 | /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */ | |
1882 | if (tls_type == GOT_TLS_GD) | |
1883 | s->size += SPARC_ELF_WORD_BYTES (htab); | |
1884 | dyn = htab->elf.dynamic_sections_created; | |
1885 | /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation, | |
1886 | R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if | |
1887 | global. */ | |
1888 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1889 | || tls_type == GOT_TLS_IE) | |
1890 | htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab); | |
1891 | else if (tls_type == GOT_TLS_GD) | |
1892 | htab->srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab); | |
1893 | else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) | |
1894 | htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab); | |
1895 | } | |
1896 | else | |
1897 | h->got.offset = (bfd_vma) -1; | |
1898 | ||
1899 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; | |
1900 | if (eh->dyn_relocs == NULL) | |
1901 | return TRUE; | |
1902 | ||
1903 | /* In the shared -Bsymbolic case, discard space allocated for | |
1904 | dynamic pc-relative relocs against symbols which turn out to be | |
1905 | defined in regular objects. For the normal shared case, discard | |
1906 | space for pc-relative relocs that have become local due to symbol | |
1907 | visibility changes. */ | |
1908 | ||
1909 | if (info->shared) | |
1910 | { | |
1911 | if (h->def_regular | |
1912 | && (h->forced_local | |
1913 | || info->symbolic)) | |
1914 | { | |
1915 | struct _bfd_sparc_elf_dyn_relocs **pp; | |
1916 | ||
1917 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1918 | { | |
1919 | p->count -= p->pc_count; | |
1920 | p->pc_count = 0; | |
1921 | if (p->count == 0) | |
1922 | *pp = p->next; | |
1923 | else | |
1924 | pp = &p->next; | |
1925 | } | |
1926 | } | |
1927 | } | |
1928 | else | |
1929 | { | |
1930 | /* For the non-shared case, discard space for relocs against | |
1931 | symbols which turn out to need copy relocs or are not | |
1932 | dynamic. */ | |
1933 | ||
1934 | if (!h->non_got_ref | |
1935 | && ((h->def_dynamic | |
1936 | && !h->def_regular) | |
1937 | || (htab->elf.dynamic_sections_created | |
1938 | && (h->root.type == bfd_link_hash_undefweak | |
1939 | || h->root.type == bfd_link_hash_undefined)))) | |
1940 | { | |
1941 | /* Make sure this symbol is output as a dynamic symbol. | |
1942 | Undefined weak syms won't yet be marked as dynamic. */ | |
1943 | if (h->dynindx == -1 | |
1944 | && !h->forced_local) | |
1945 | { | |
1946 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1947 | return FALSE; | |
1948 | } | |
1949 | ||
1950 | /* If that succeeded, we know we'll be keeping all the | |
1951 | relocs. */ | |
1952 | if (h->dynindx != -1) | |
1953 | goto keep; | |
1954 | } | |
1955 | ||
1956 | eh->dyn_relocs = NULL; | |
1957 | ||
1958 | keep: ; | |
1959 | } | |
1960 | ||
1961 | /* Finally, allocate space. */ | |
1962 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1963 | { | |
1964 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
1965 | sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab); | |
1966 | } | |
1967 | ||
1968 | return TRUE; | |
1969 | } | |
1970 | ||
1971 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1972 | ||
1973 | static bfd_boolean | |
1974 | readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
1975 | { | |
1976 | struct _bfd_sparc_elf_link_hash_entry *eh; | |
1977 | struct _bfd_sparc_elf_dyn_relocs *p; | |
1978 | ||
1979 | if (h->root.type == bfd_link_hash_warning) | |
1980 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1981 | ||
1982 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; | |
1983 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1984 | { | |
1985 | asection *s = p->sec->output_section; | |
1986 | ||
1987 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1988 | { | |
1989 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1990 | ||
1991 | info->flags |= DF_TEXTREL; | |
1992 | ||
1993 | /* Not an error, just cut short the traversal. */ | |
1994 | return FALSE; | |
1995 | } | |
1996 | } | |
1997 | return TRUE; | |
1998 | } | |
1999 | ||
2000 | /* Return true if the dynamic symbol for a given section should be | |
2001 | omitted when creating a shared library. */ | |
2002 | ||
2003 | bfd_boolean | |
2004 | _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd, | |
2005 | struct bfd_link_info *info, | |
2006 | asection *p) | |
2007 | { | |
2008 | /* We keep the .got section symbol so that explicit relocations | |
2009 | against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode | |
2010 | can be turned into relocations against the .got symbol. */ | |
2011 | if (strcmp (p->name, ".got") == 0) | |
2012 | return FALSE; | |
2013 | ||
2014 | return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); | |
2015 | } | |
2016 | ||
2017 | /* Set the sizes of the dynamic sections. */ | |
2018 | ||
2019 | bfd_boolean | |
2020 | _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd, | |
2021 | struct bfd_link_info *info) | |
2022 | { | |
2023 | struct _bfd_sparc_elf_link_hash_table *htab; | |
2024 | bfd *dynobj; | |
2025 | asection *s; | |
2026 | bfd *ibfd; | |
2027 | ||
2028 | htab = _bfd_sparc_elf_hash_table (info); | |
2029 | dynobj = htab->elf.dynobj; | |
2030 | BFD_ASSERT (dynobj != NULL); | |
2031 | ||
2032 | if (elf_hash_table (info)->dynamic_sections_created) | |
2033 | { | |
2034 | /* Set the contents of the .interp section to the interpreter. */ | |
2035 | if (info->executable) | |
2036 | { | |
2037 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2038 | BFD_ASSERT (s != NULL); | |
2039 | s->size = htab->dynamic_interpreter_size; | |
2040 | s->contents = (unsigned char *) htab->dynamic_interpreter; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | /* Set up .got offsets for local syms, and space for local dynamic | |
2045 | relocs. */ | |
2046 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
2047 | { | |
2048 | bfd_signed_vma *local_got; | |
2049 | bfd_signed_vma *end_local_got; | |
2050 | char *local_tls_type; | |
2051 | bfd_size_type locsymcount; | |
2052 | Elf_Internal_Shdr *symtab_hdr; | |
2053 | asection *srel; | |
2054 | ||
2055 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
2056 | continue; | |
2057 | ||
2058 | for (s = ibfd->sections; s != NULL; s = s->next) | |
2059 | { | |
2060 | struct _bfd_sparc_elf_dyn_relocs *p; | |
2061 | ||
2062 | for (p = *((struct _bfd_sparc_elf_dyn_relocs **) | |
2063 | &elf_section_data (s)->local_dynrel); | |
2064 | p != NULL; | |
2065 | p = p->next) | |
2066 | { | |
2067 | if (!bfd_is_abs_section (p->sec) | |
2068 | && bfd_is_abs_section (p->sec->output_section)) | |
2069 | { | |
2070 | /* Input section has been discarded, either because | |
2071 | it is a copy of a linkonce section or due to | |
2072 | linker script /DISCARD/, so we'll be discarding | |
2073 | the relocs too. */ | |
2074 | } | |
2075 | else if (p->count != 0) | |
2076 | { | |
2077 | srel = elf_section_data (p->sec)->sreloc; | |
2078 | srel->size += p->count * SPARC_ELF_RELA_BYTES (htab); | |
2079 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
2080 | info->flags |= DF_TEXTREL; | |
2081 | } | |
2082 | } | |
2083 | } | |
2084 | ||
2085 | local_got = elf_local_got_refcounts (ibfd); | |
2086 | if (!local_got) | |
2087 | continue; | |
2088 | ||
2089 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2090 | locsymcount = symtab_hdr->sh_info; | |
2091 | end_local_got = local_got + locsymcount; | |
2092 | local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd); | |
2093 | s = htab->sgot; | |
2094 | srel = htab->srelgot; | |
2095 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
2096 | { | |
2097 | if (*local_got > 0) | |
2098 | { | |
2099 | *local_got = s->size; | |
2100 | s->size += SPARC_ELF_WORD_BYTES (htab); | |
2101 | if (*local_tls_type == GOT_TLS_GD) | |
2102 | s->size += SPARC_ELF_WORD_BYTES (htab); | |
2103 | if (info->shared | |
2104 | || *local_tls_type == GOT_TLS_GD | |
2105 | || *local_tls_type == GOT_TLS_IE) | |
2106 | srel->size += SPARC_ELF_RELA_BYTES (htab); | |
2107 | } | |
2108 | else | |
2109 | *local_got = (bfd_vma) -1; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | if (htab->tls_ldm_got.refcount > 0) | |
2114 | { | |
2115 | /* Allocate 2 got entries and 1 dynamic reloc for | |
2116 | R_SPARC_TLS_LDM_{HI22,LO10} relocs. */ | |
2117 | htab->tls_ldm_got.offset = htab->sgot->size; | |
2118 | htab->sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab)); | |
2119 | htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab); | |
2120 | } | |
2121 | else | |
2122 | htab->tls_ldm_got.offset = -1; | |
2123 | ||
2124 | /* Allocate global sym .plt and .got entries, and space for global | |
2125 | sym dynamic relocs. */ | |
2126 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
2127 | ||
2128 | if (! ABI_64_P (output_bfd) | |
2129 | && elf_hash_table (info)->dynamic_sections_created) | |
2130 | { | |
2131 | /* Make space for the trailing nop in .plt. */ | |
2132 | if (htab->splt->size > 0) | |
2133 | htab->splt->size += 1 * SPARC_INSN_BYTES; | |
2134 | ||
2135 | /* If the .got section is more than 0x1000 bytes, we add | |
2136 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
2137 | bit relocations have a greater chance of working. | |
2138 | ||
2139 | FIXME: Make this optimization work for 64-bit too. */ | |
2140 | if (htab->sgot->size >= 0x1000 | |
2141 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
2142 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
2143 | } | |
2144 | ||
2145 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2146 | determined the sizes of the various dynamic sections. Allocate | |
2147 | memory for them. */ | |
2148 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2149 | { | |
2150 | const char *name; | |
2151 | bfd_boolean strip = FALSE; | |
2152 | ||
2153 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2154 | continue; | |
2155 | ||
2156 | /* It's OK to base decisions on the section name, because none | |
2157 | of the dynobj section names depend upon the input files. */ | |
2158 | name = bfd_get_section_name (dynobj, s); | |
2159 | ||
2160 | if (strncmp (name, ".rela", 5) == 0) | |
2161 | { | |
2162 | if (s->size == 0) | |
2163 | { | |
2164 | /* If we don't need this section, strip it from the | |
2165 | output file. This is to handle .rela.bss and | |
2166 | .rel.plt. We must create it in | |
2167 | create_dynamic_sections, because it must be created | |
2168 | before the linker maps input sections to output | |
2169 | sections. The linker does that before | |
2170 | adjust_dynamic_symbol is called, and it is that | |
2171 | function which decides whether anything needs to go | |
2172 | into these sections. */ | |
2173 | strip = TRUE; | |
2174 | } | |
2175 | else | |
2176 | { | |
2177 | /* We use the reloc_count field as a counter if we need | |
2178 | to copy relocs into the output file. */ | |
2179 | s->reloc_count = 0; | |
2180 | } | |
2181 | } | |
2182 | else if (s != htab->splt && s != htab->sgot) | |
2183 | { | |
2184 | /* It's not one of our sections, so don't allocate space. */ | |
2185 | continue; | |
2186 | } | |
2187 | ||
2188 | if (strip) | |
2189 | { | |
8423293d | 2190 | s->flags |= SEC_EXCLUDE; |
22b75d0a DM |
2191 | continue; |
2192 | } | |
2193 | ||
2194 | /* Allocate memory for the section contents. Zero the memory | |
2195 | for the benefit of .rela.plt, which has 4 unused entries | |
2196 | at the beginning, and we don't want garbage. */ | |
2197 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2198 | if (s->contents == NULL && s->size != 0) | |
2199 | return FALSE; | |
2200 | } | |
2201 | ||
2202 | if (elf_hash_table (info)->dynamic_sections_created) | |
2203 | { | |
2204 | /* Add some entries to the .dynamic section. We fill in the | |
2205 | values later, in _bfd_sparc_elf_finish_dynamic_sections, but we | |
2206 | must add the entries now so that we get the correct size for | |
2207 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2208 | dynamic linker and used by the debugger. */ | |
2209 | #define add_dynamic_entry(TAG, VAL) \ | |
2210 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
2211 | ||
2212 | if (info->executable) | |
2213 | { | |
2214 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2215 | return FALSE; | |
2216 | } | |
2217 | ||
2218 | if (htab->srelplt->size != 0) | |
2219 | { | |
2220 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
2221 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2222 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2223 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2224 | return FALSE; | |
2225 | } | |
2226 | ||
2227 | if (!add_dynamic_entry (DT_RELA, 0) | |
2228 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2229 | || !add_dynamic_entry (DT_RELAENT, | |
2230 | SPARC_ELF_RELA_BYTES (htab))) | |
2231 | return FALSE; | |
2232 | ||
2233 | /* If any dynamic relocs apply to a read-only section, | |
2234 | then we need a DT_TEXTREL entry. */ | |
2235 | if ((info->flags & DF_TEXTREL) == 0) | |
2236 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
2237 | (PTR) info); | |
2238 | ||
2239 | if (info->flags & DF_TEXTREL) | |
2240 | { | |
2241 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2242 | return FALSE; | |
2243 | } | |
2244 | ||
2245 | if (ABI_64_P (output_bfd)) | |
2246 | { | |
2247 | int reg; | |
2248 | struct _bfd_sparc_elf_app_reg * app_regs; | |
2249 | struct elf_strtab_hash *dynstr; | |
2250 | struct elf_link_hash_table *eht = elf_hash_table (info); | |
2251 | ||
2252 | /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER | |
2253 | entries if needed. */ | |
2254 | app_regs = _bfd_sparc_elf_hash_table (info)->app_regs; | |
2255 | dynstr = eht->dynstr; | |
2256 | ||
2257 | for (reg = 0; reg < 4; reg++) | |
2258 | if (app_regs [reg].name != NULL) | |
2259 | { | |
2260 | struct elf_link_local_dynamic_entry *entry, *e; | |
2261 | ||
2262 | if (!add_dynamic_entry (DT_SPARC_REGISTER, 0)) | |
2263 | return FALSE; | |
2264 | ||
2265 | entry = (struct elf_link_local_dynamic_entry *) | |
2266 | bfd_hash_allocate (&info->hash->table, sizeof (*entry)); | |
2267 | if (entry == NULL) | |
2268 | return FALSE; | |
2269 | ||
2270 | /* We cheat here a little bit: the symbol will not be local, so we | |
2271 | put it at the end of the dynlocal linked list. We will fix it | |
2272 | later on, as we have to fix other fields anyway. */ | |
2273 | entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; | |
2274 | entry->isym.st_size = 0; | |
2275 | if (*app_regs [reg].name != '\0') | |
2276 | entry->isym.st_name | |
2277 | = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE); | |
2278 | else | |
2279 | entry->isym.st_name = 0; | |
2280 | entry->isym.st_other = 0; | |
2281 | entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, | |
2282 | STT_REGISTER); | |
2283 | entry->isym.st_shndx = app_regs [reg].shndx; | |
2284 | entry->next = NULL; | |
2285 | entry->input_bfd = output_bfd; | |
2286 | entry->input_indx = -1; | |
2287 | ||
2288 | if (eht->dynlocal == NULL) | |
2289 | eht->dynlocal = entry; | |
2290 | else | |
2291 | { | |
2292 | for (e = eht->dynlocal; e->next; e = e->next) | |
2293 | ; | |
2294 | e->next = entry; | |
2295 | } | |
2296 | eht->dynsymcount++; | |
2297 | } | |
2298 | } | |
2299 | } | |
2300 | #undef add_dynamic_entry | |
2301 | ||
2302 | return TRUE; | |
2303 | } | |
2304 | \f | |
2305 | bfd_boolean | |
2306 | _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec) | |
2307 | { | |
2308 | struct _bfd_sparc_elf_section_data *sdata; | |
2309 | bfd_size_type amt = sizeof (*sdata); | |
2310 | ||
2311 | sdata = (struct _bfd_sparc_elf_section_data *) bfd_zalloc (abfd, amt); | |
2312 | if (sdata == NULL) | |
2313 | return FALSE; | |
2314 | sec->used_by_bfd = (PTR) sdata; | |
2315 | ||
2316 | return _bfd_elf_new_section_hook (abfd, sec); | |
2317 | } | |
2318 | ||
2319 | bfd_boolean | |
2320 | _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED, | |
2321 | struct bfd_section *section, | |
2322 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
2323 | bfd_boolean *again) | |
2324 | { | |
2325 | *again = FALSE; | |
2326 | sec_do_relax (section) = 1; | |
2327 | return TRUE; | |
2328 | } | |
2329 | \f | |
2330 | /* Return the base VMA address which should be subtracted from real addresses | |
2331 | when resolving @dtpoff relocation. | |
2332 | This is PT_TLS segment p_vaddr. */ | |
2333 | ||
2334 | static bfd_vma | |
2335 | dtpoff_base (struct bfd_link_info *info) | |
2336 | { | |
2337 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2338 | if (elf_hash_table (info)->tls_sec == NULL) | |
2339 | return 0; | |
2340 | return elf_hash_table (info)->tls_sec->vma; | |
2341 | } | |
2342 | ||
2343 | /* Return the relocation value for @tpoff relocation | |
2344 | if STT_TLS virtual address is ADDRESS. */ | |
2345 | ||
2346 | static bfd_vma | |
2347 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
2348 | { | |
2349 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
2350 | ||
2351 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2352 | if (htab->tls_sec == NULL) | |
2353 | return 0; | |
2354 | return address - htab->tls_size - htab->tls_sec->vma; | |
2355 | } | |
2356 | ||
2357 | /* Relocate a SPARC ELF section. */ | |
2358 | ||
2359 | bfd_boolean | |
2360 | _bfd_sparc_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, | |
2361 | bfd *input_bfd, asection *input_section, | |
2362 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
2363 | Elf_Internal_Sym *local_syms, asection **local_sections) | |
2364 | { | |
2365 | struct _bfd_sparc_elf_link_hash_table *htab; | |
2366 | Elf_Internal_Shdr *symtab_hdr; | |
2367 | struct elf_link_hash_entry **sym_hashes; | |
2368 | bfd_vma *local_got_offsets; | |
2369 | bfd_vma got_base; | |
2370 | asection *sreloc; | |
2371 | Elf_Internal_Rela *rel; | |
2372 | Elf_Internal_Rela *relend; | |
2373 | int num_relocs; | |
2374 | ||
2375 | if (info->relocatable) | |
2376 | return TRUE; | |
2377 | ||
2378 | htab = _bfd_sparc_elf_hash_table (info); | |
2379 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2380 | sym_hashes = elf_sym_hashes (input_bfd); | |
2381 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2382 | ||
2383 | if (elf_hash_table (info)->hgot == NULL) | |
2384 | got_base = 0; | |
2385 | else | |
2386 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
2387 | ||
2388 | sreloc = elf_section_data (input_section)->sreloc; | |
2389 | ||
2390 | rel = relocs; | |
2391 | if (ABI_64_P (output_bfd)) | |
2392 | num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr); | |
2393 | else | |
2394 | num_relocs = input_section->reloc_count; | |
2395 | relend = relocs + num_relocs; | |
2396 | for (; rel < relend; rel++) | |
2397 | { | |
2398 | int r_type, tls_type; | |
2399 | reloc_howto_type *howto; | |
2400 | unsigned long r_symndx; | |
2401 | struct elf_link_hash_entry *h; | |
2402 | Elf_Internal_Sym *sym; | |
2403 | asection *sec; | |
2404 | bfd_vma relocation, off; | |
2405 | bfd_reloc_status_type r; | |
2406 | bfd_boolean is_plt = FALSE; | |
2407 | bfd_boolean unresolved_reloc; | |
2408 | ||
2409 | r_type = SPARC_ELF_R_TYPE (rel->r_info); | |
2410 | if (r_type == R_SPARC_GNU_VTINHERIT | |
2411 | || r_type == R_SPARC_GNU_VTENTRY) | |
2412 | continue; | |
2413 | ||
2414 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) | |
2415 | { | |
2416 | bfd_set_error (bfd_error_bad_value); | |
2417 | return FALSE; | |
2418 | } | |
2419 | howto = _bfd_sparc_elf_howto_table + r_type; | |
2420 | ||
2421 | /* This is a final link. */ | |
2422 | r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); | |
2423 | h = NULL; | |
2424 | sym = NULL; | |
2425 | sec = NULL; | |
2426 | unresolved_reloc = FALSE; | |
2427 | if (r_symndx < symtab_hdr->sh_info) | |
2428 | { | |
2429 | sym = local_syms + r_symndx; | |
2430 | sec = local_sections[r_symndx]; | |
2431 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2432 | } | |
2433 | else | |
2434 | { | |
2435 | bfd_boolean warned; | |
2436 | ||
2437 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
2438 | r_symndx, symtab_hdr, sym_hashes, | |
2439 | h, sec, relocation, | |
2440 | unresolved_reloc, warned); | |
2441 | if (warned) | |
2442 | { | |
2443 | /* To avoid generating warning messages about truncated | |
2444 | relocations, set the relocation's address to be the same as | |
2445 | the start of this section. */ | |
2446 | if (input_section->output_section != NULL) | |
2447 | relocation = input_section->output_section->vma; | |
2448 | else | |
2449 | relocation = 0; | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | switch (r_type) | |
2454 | { | |
2455 | case R_SPARC_GOT10: | |
2456 | case R_SPARC_GOT13: | |
2457 | case R_SPARC_GOT22: | |
2458 | /* Relocation is to the entry for this symbol in the global | |
2459 | offset table. */ | |
2460 | if (htab->sgot == NULL) | |
2461 | abort (); | |
2462 | ||
2463 | if (h != NULL) | |
2464 | { | |
2465 | bfd_boolean dyn; | |
2466 | ||
2467 | off = h->got.offset; | |
2468 | BFD_ASSERT (off != (bfd_vma) -1); | |
2469 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
2470 | ||
2471 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2472 | || (info->shared | |
2473 | && (info->symbolic | |
2474 | || h->dynindx == -1 | |
2475 | || h->forced_local) | |
2476 | && h->def_regular)) | |
2477 | { | |
2478 | /* This is actually a static link, or it is a | |
2479 | -Bsymbolic link and the symbol is defined | |
2480 | locally, or the symbol was forced to be local | |
2481 | because of a version file. We must initialize | |
2482 | this entry in the global offset table. Since the | |
2483 | offset must always be a multiple of 8 for 64-bit | |
2484 | and 4 for 32-bit, we use the least significant bit | |
2485 | to record whether we have initialized it already. | |
2486 | ||
2487 | When doing a dynamic link, we create a .rela.got | |
2488 | relocation entry to initialize the value. This | |
2489 | is done in the finish_dynamic_symbol routine. */ | |
2490 | if ((off & 1) != 0) | |
2491 | off &= ~1; | |
2492 | else | |
2493 | { | |
2494 | SPARC_ELF_PUT_WORD (htab, output_bfd, relocation, | |
2495 | htab->sgot->contents + off); | |
2496 | h->got.offset |= 1; | |
2497 | } | |
2498 | } | |
2499 | else | |
2500 | unresolved_reloc = FALSE; | |
2501 | } | |
2502 | else | |
2503 | { | |
2504 | BFD_ASSERT (local_got_offsets != NULL | |
2505 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
2506 | ||
2507 | off = local_got_offsets[r_symndx]; | |
2508 | ||
2509 | /* The offset must always be a multiple of 8 on 64-bit and | |
2510 | 4 on 32-bit. We use the least significant bit to record | |
2511 | whether we have already processed this entry. */ | |
2512 | if ((off & 1) != 0) | |
2513 | off &= ~1; | |
2514 | else | |
2515 | { | |
2516 | ||
2517 | if (info->shared) | |
2518 | { | |
2519 | asection *s; | |
2520 | Elf_Internal_Rela outrel; | |
2521 | ||
2522 | /* We need to generate a R_SPARC_RELATIVE reloc | |
2523 | for the dynamic linker. */ | |
2524 | s = htab->srelgot; | |
2525 | BFD_ASSERT (s != NULL); | |
2526 | ||
2527 | outrel.r_offset = (htab->sgot->output_section->vma | |
2528 | + htab->sgot->output_offset | |
2529 | + off); | |
2530 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, | |
2531 | 0, R_SPARC_RELATIVE); | |
2532 | outrel.r_addend = relocation; | |
2533 | relocation = 0; | |
2534 | SPARC_ELF_APPEND_RELA (htab, output_bfd, s, &outrel); | |
2535 | } | |
2536 | ||
2537 | SPARC_ELF_PUT_WORD (htab, output_bfd, relocation, | |
2538 | htab->sgot->contents + off); | |
2539 | local_got_offsets[r_symndx] |= 1; | |
2540 | } | |
2541 | } | |
2542 | relocation = htab->sgot->output_offset + off - got_base; | |
2543 | break; | |
2544 | ||
2545 | case R_SPARC_PLT32: | |
2546 | case R_SPARC_PLT64: | |
2547 | if (h == NULL || h->plt.offset == (bfd_vma) -1) | |
2548 | { | |
2549 | r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64; | |
2550 | goto r_sparc_plt32; | |
2551 | } | |
2552 | /* Fall through. */ | |
2553 | ||
2554 | case R_SPARC_WPLT30: | |
2555 | case R_SPARC_HIPLT22: | |
2556 | case R_SPARC_LOPLT10: | |
2557 | case R_SPARC_PCPLT32: | |
2558 | case R_SPARC_PCPLT22: | |
2559 | case R_SPARC_PCPLT10: | |
2560 | r_sparc_wplt30: | |
2561 | /* Relocation is to the entry for this symbol in the | |
2562 | procedure linkage table. */ | |
2563 | ||
2564 | if (! ABI_64_P (output_bfd)) | |
2565 | { | |
2566 | /* The Solaris native assembler will generate a WPLT30 reloc | |
2567 | for a local symbol if you assemble a call from one | |
2568 | section to another when using -K pic. We treat it as | |
2569 | WDISP30. */ | |
2570 | if (h == NULL) | |
2571 | break; | |
2572 | } | |
2573 | else | |
2574 | { | |
2575 | BFD_ASSERT (h != NULL); | |
2576 | } | |
2577 | ||
2578 | if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL) | |
2579 | { | |
2580 | /* We didn't make a PLT entry for this symbol. This | |
2581 | happens when statically linking PIC code, or when | |
2582 | using -Bsymbolic. */ | |
2583 | break; | |
2584 | } | |
2585 | ||
2586 | relocation = (htab->splt->output_section->vma | |
2587 | + htab->splt->output_offset | |
2588 | + h->plt.offset); | |
2589 | unresolved_reloc = FALSE; | |
2590 | if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) | |
2591 | { | |
2592 | r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; | |
2593 | is_plt = TRUE; | |
2594 | goto r_sparc_plt32; | |
2595 | } | |
2596 | break; | |
2597 | ||
2598 | case R_SPARC_PC10: | |
2599 | case R_SPARC_PC22: | |
2600 | case R_SPARC_PC_HH22: | |
2601 | case R_SPARC_PC_HM10: | |
2602 | case R_SPARC_PC_LM22: | |
2603 | if (h != NULL | |
2604 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2605 | break; | |
2606 | /* Fall through. */ | |
2607 | case R_SPARC_DISP8: | |
2608 | case R_SPARC_DISP16: | |
2609 | case R_SPARC_DISP32: | |
2610 | case R_SPARC_DISP64: | |
2611 | case R_SPARC_WDISP30: | |
2612 | case R_SPARC_WDISP22: | |
2613 | case R_SPARC_WDISP19: | |
2614 | case R_SPARC_WDISP16: | |
2615 | case R_SPARC_8: | |
2616 | case R_SPARC_16: | |
2617 | case R_SPARC_32: | |
2618 | case R_SPARC_HI22: | |
2619 | case R_SPARC_22: | |
2620 | case R_SPARC_13: | |
2621 | case R_SPARC_LO10: | |
2622 | case R_SPARC_UA16: | |
2623 | case R_SPARC_UA32: | |
2624 | case R_SPARC_10: | |
2625 | case R_SPARC_11: | |
2626 | case R_SPARC_64: | |
2627 | case R_SPARC_OLO10: | |
2628 | case R_SPARC_HH22: | |
2629 | case R_SPARC_HM10: | |
2630 | case R_SPARC_LM22: | |
2631 | case R_SPARC_7: | |
2632 | case R_SPARC_5: | |
2633 | case R_SPARC_6: | |
2634 | case R_SPARC_HIX22: | |
2635 | case R_SPARC_LOX10: | |
2636 | case R_SPARC_H44: | |
2637 | case R_SPARC_M44: | |
2638 | case R_SPARC_L44: | |
2639 | case R_SPARC_UA64: | |
2640 | r_sparc_plt32: | |
2641 | /* r_symndx will be zero only for relocs against symbols | |
2642 | from removed linkonce sections, or sections discarded by | |
2643 | a linker script. */ | |
2644 | if (r_symndx == 0 | |
2645 | || (input_section->flags & SEC_ALLOC) == 0) | |
2646 | break; | |
2647 | ||
2648 | if ((info->shared | |
2649 | && (h == NULL | |
2650 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2651 | || h->root.type != bfd_link_hash_undefweak) | |
2652 | && (! howto->pc_relative | |
2653 | || (h != NULL | |
2654 | && h->dynindx != -1 | |
2655 | && (! info->symbolic | |
2656 | || !h->def_regular)))) | |
2657 | || (!info->shared | |
2658 | && h != NULL | |
2659 | && h->dynindx != -1 | |
2660 | && !h->non_got_ref | |
2661 | && ((h->def_dynamic | |
2662 | && !h->def_regular) | |
2663 | || h->root.type == bfd_link_hash_undefweak | |
2664 | || h->root.type == bfd_link_hash_undefined))) | |
2665 | { | |
2666 | Elf_Internal_Rela outrel; | |
2667 | bfd_boolean skip, relocate = FALSE; | |
2668 | ||
2669 | /* When generating a shared object, these relocations | |
2670 | are copied into the output file to be resolved at run | |
2671 | time. */ | |
2672 | ||
2673 | BFD_ASSERT (sreloc != NULL); | |
2674 | ||
2675 | skip = FALSE; | |
2676 | ||
2677 | outrel.r_offset = | |
2678 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2679 | rel->r_offset); | |
2680 | if (outrel.r_offset == (bfd_vma) -1) | |
2681 | skip = TRUE; | |
2682 | else if (outrel.r_offset == (bfd_vma) -2) | |
2683 | skip = TRUE, relocate = TRUE; | |
2684 | outrel.r_offset += (input_section->output_section->vma | |
2685 | + input_section->output_offset); | |
2686 | ||
2687 | /* Optimize unaligned reloc usage now that we know where | |
2688 | it finally resides. */ | |
2689 | switch (r_type) | |
2690 | { | |
2691 | case R_SPARC_16: | |
2692 | if (outrel.r_offset & 1) | |
2693 | r_type = R_SPARC_UA16; | |
2694 | break; | |
2695 | case R_SPARC_UA16: | |
2696 | if (!(outrel.r_offset & 1)) | |
2697 | r_type = R_SPARC_16; | |
2698 | break; | |
2699 | case R_SPARC_32: | |
2700 | if (outrel.r_offset & 3) | |
2701 | r_type = R_SPARC_UA32; | |
2702 | break; | |
2703 | case R_SPARC_UA32: | |
2704 | if (!(outrel.r_offset & 3)) | |
2705 | r_type = R_SPARC_32; | |
2706 | break; | |
2707 | case R_SPARC_64: | |
2708 | if (outrel.r_offset & 7) | |
2709 | r_type = R_SPARC_UA64; | |
2710 | break; | |
2711 | case R_SPARC_UA64: | |
2712 | if (!(outrel.r_offset & 7)) | |
2713 | r_type = R_SPARC_64; | |
2714 | break; | |
2715 | case R_SPARC_DISP8: | |
2716 | case R_SPARC_DISP16: | |
2717 | case R_SPARC_DISP32: | |
2718 | case R_SPARC_DISP64: | |
2719 | /* If the symbol is not dynamic, we should not keep | |
2720 | a dynamic relocation. But an .rela.* slot has been | |
2721 | allocated for it, output R_SPARC_NONE. | |
2722 | FIXME: Add code tracking needed dynamic relocs as | |
2723 | e.g. i386 has. */ | |
2724 | if (h->dynindx == -1) | |
2725 | skip = TRUE, relocate = TRUE; | |
2726 | break; | |
2727 | } | |
2728 | ||
2729 | if (skip) | |
2730 | memset (&outrel, 0, sizeof outrel); | |
2731 | /* h->dynindx may be -1 if the symbol was marked to | |
2732 | become local. */ | |
2733 | else if (h != NULL && ! is_plt | |
2734 | && ((! info->symbolic && h->dynindx != -1) | |
2735 | || !h->def_regular)) | |
2736 | { | |
2737 | BFD_ASSERT (h->dynindx != -1); | |
2738 | outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type); | |
2739 | outrel.r_addend = rel->r_addend; | |
2740 | } | |
2741 | else | |
2742 | { | |
2743 | if (r_type == R_SPARC_32 || r_type == R_SPARC_64) | |
2744 | { | |
2745 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, | |
2746 | 0, R_SPARC_RELATIVE); | |
2747 | outrel.r_addend = relocation + rel->r_addend; | |
2748 | } | |
2749 | else | |
2750 | { | |
2751 | long indx; | |
2752 | ||
2753 | if (is_plt) | |
2754 | sec = htab->splt; | |
2755 | ||
2756 | if (bfd_is_abs_section (sec)) | |
2757 | indx = 0; | |
2758 | else if (sec == NULL || sec->owner == NULL) | |
2759 | { | |
2760 | bfd_set_error (bfd_error_bad_value); | |
2761 | return FALSE; | |
2762 | } | |
2763 | else | |
2764 | { | |
2765 | asection *osec; | |
2766 | ||
2767 | osec = sec->output_section; | |
2768 | indx = elf_section_data (osec)->dynindx; | |
2769 | ||
2770 | /* FIXME: we really should be able to link non-pic | |
2771 | shared libraries. */ | |
2772 | if (indx == 0) | |
2773 | { | |
2774 | BFD_FAIL (); | |
2775 | (*_bfd_error_handler) | |
2776 | (_("%B: probably compiled without -fPIC?"), | |
2777 | input_bfd); | |
2778 | bfd_set_error (bfd_error_bad_value); | |
2779 | return FALSE; | |
2780 | } | |
2781 | } | |
2782 | ||
2783 | outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx, r_type); | |
2784 | outrel.r_addend = relocation + rel->r_addend; | |
2785 | } | |
2786 | } | |
2787 | ||
2788 | SPARC_ELF_APPEND_RELA (htab, output_bfd, sreloc, &outrel); | |
2789 | ||
2790 | /* This reloc will be computed at runtime, so there's no | |
2791 | need to do anything now. */ | |
2792 | if (! relocate) | |
2793 | continue; | |
2794 | } | |
2795 | break; | |
2796 | ||
2797 | case R_SPARC_TLS_GD_HI22: | |
2798 | if (! ABI_64_P (input_bfd) | |
2799 | && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd) | |
2800 | { | |
2801 | /* R_SPARC_REV32 used the same reloc number as | |
2802 | R_SPARC_TLS_GD_HI22. */ | |
2803 | r_type = R_SPARC_REV32; | |
2804 | break; | |
2805 | } | |
2806 | /* Fall through */ | |
2807 | ||
2808 | case R_SPARC_TLS_GD_LO10: | |
2809 | case R_SPARC_TLS_IE_HI22: | |
2810 | case R_SPARC_TLS_IE_LO10: | |
2811 | r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL); | |
2812 | tls_type = GOT_UNKNOWN; | |
2813 | if (h == NULL && local_got_offsets) | |
2814 | tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; | |
2815 | else if (h != NULL) | |
2816 | { | |
2817 | tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; | |
2818 | if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) | |
2819 | switch (SPARC_ELF_R_TYPE (rel->r_info)) | |
2820 | { | |
2821 | case R_SPARC_TLS_GD_HI22: | |
2822 | case R_SPARC_TLS_IE_HI22: | |
2823 | r_type = R_SPARC_TLS_LE_HIX22; | |
2824 | break; | |
2825 | default: | |
2826 | r_type = R_SPARC_TLS_LE_LOX10; | |
2827 | break; | |
2828 | } | |
2829 | } | |
2830 | if (tls_type == GOT_TLS_IE) | |
2831 | switch (r_type) | |
2832 | { | |
2833 | case R_SPARC_TLS_GD_HI22: | |
2834 | r_type = R_SPARC_TLS_IE_HI22; | |
2835 | break; | |
2836 | case R_SPARC_TLS_GD_LO10: | |
2837 | r_type = R_SPARC_TLS_IE_LO10; | |
2838 | break; | |
2839 | } | |
2840 | ||
2841 | if (r_type == R_SPARC_TLS_LE_HIX22) | |
2842 | { | |
2843 | relocation = tpoff (info, relocation); | |
2844 | break; | |
2845 | } | |
2846 | if (r_type == R_SPARC_TLS_LE_LOX10) | |
2847 | { | |
2848 | /* Change add into xor. */ | |
2849 | relocation = tpoff (info, relocation); | |
2850 | bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd, | |
2851 | contents + rel->r_offset) | |
2852 | | 0x80182000), contents + rel->r_offset); | |
2853 | break; | |
2854 | } | |
2855 | ||
2856 | if (h != NULL) | |
2857 | { | |
2858 | off = h->got.offset; | |
2859 | h->got.offset |= 1; | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | BFD_ASSERT (local_got_offsets != NULL); | |
2864 | off = local_got_offsets[r_symndx]; | |
2865 | local_got_offsets[r_symndx] |= 1; | |
2866 | } | |
2867 | ||
2868 | r_sparc_tlsldm: | |
2869 | if (htab->sgot == NULL) | |
2870 | abort (); | |
2871 | ||
2872 | if ((off & 1) != 0) | |
2873 | off &= ~1; | |
2874 | else | |
2875 | { | |
2876 | Elf_Internal_Rela outrel; | |
2877 | int dr_type, indx; | |
2878 | ||
2879 | if (htab->srelgot == NULL) | |
2880 | abort (); | |
2881 | ||
2882 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, htab->sgot->contents + off); | |
2883 | outrel.r_offset = (htab->sgot->output_section->vma | |
2884 | + htab->sgot->output_offset + off); | |
2885 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2886 | if (r_type == R_SPARC_TLS_IE_HI22 | |
2887 | || r_type == R_SPARC_TLS_IE_LO10) | |
2888 | dr_type = SPARC_ELF_TPOFF_RELOC (htab); | |
2889 | else | |
2890 | dr_type = SPARC_ELF_DTPMOD_RELOC (htab); | |
2891 | if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0) | |
2892 | outrel.r_addend = relocation - dtpoff_base (info); | |
2893 | else | |
2894 | outrel.r_addend = 0; | |
2895 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type); | |
2896 | SPARC_ELF_APPEND_RELA (htab, output_bfd, htab->srelgot, &outrel); | |
2897 | ||
2898 | if (r_type == R_SPARC_TLS_GD_HI22 | |
2899 | || r_type == R_SPARC_TLS_GD_LO10) | |
2900 | { | |
2901 | if (indx == 0) | |
2902 | { | |
2903 | BFD_ASSERT (! unresolved_reloc); | |
2904 | SPARC_ELF_PUT_WORD (htab, output_bfd, | |
2905 | relocation - dtpoff_base (info), | |
2906 | (htab->sgot->contents + off | |
2907 | + SPARC_ELF_WORD_BYTES (htab))); | |
2908 | } | |
2909 | else | |
2910 | { | |
2911 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, | |
2912 | (htab->sgot->contents + off | |
2913 | + SPARC_ELF_WORD_BYTES (htab))); | |
2914 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, | |
2915 | SPARC_ELF_DTPOFF_RELOC (htab)); | |
2916 | outrel.r_offset += SPARC_ELF_WORD_BYTES (htab); | |
2917 | SPARC_ELF_APPEND_RELA (htab, output_bfd, htab->srelgot, &outrel); | |
2918 | } | |
2919 | } | |
2920 | else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab)) | |
2921 | { | |
2922 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, | |
2923 | (htab->sgot->contents + off | |
2924 | + SPARC_ELF_WORD_BYTES (htab))); | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | if (off >= (bfd_vma) -2) | |
2929 | abort (); | |
2930 | ||
2931 | relocation = htab->sgot->output_offset + off - got_base; | |
2932 | unresolved_reloc = FALSE; | |
2933 | howto = _bfd_sparc_elf_howto_table + r_type; | |
2934 | break; | |
2935 | ||
2936 | case R_SPARC_TLS_LDM_HI22: | |
2937 | case R_SPARC_TLS_LDM_LO10: | |
2938 | if (! info->shared) | |
2939 | { | |
2940 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); | |
2941 | continue; | |
2942 | } | |
2943 | off = htab->tls_ldm_got.offset; | |
2944 | htab->tls_ldm_got.offset |= 1; | |
2945 | goto r_sparc_tlsldm; | |
2946 | ||
2947 | case R_SPARC_TLS_LDO_HIX22: | |
2948 | case R_SPARC_TLS_LDO_LOX10: | |
2949 | if (info->shared) | |
2950 | { | |
2951 | relocation -= dtpoff_base (info); | |
2952 | break; | |
2953 | } | |
2954 | ||
2955 | r_type = (r_type == R_SPARC_TLS_LDO_HIX22 | |
2956 | ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10); | |
2957 | /* Fall through. */ | |
2958 | ||
2959 | case R_SPARC_TLS_LE_HIX22: | |
2960 | case R_SPARC_TLS_LE_LOX10: | |
2961 | if (info->shared) | |
2962 | { | |
2963 | Elf_Internal_Rela outrel; | |
2964 | bfd_boolean skip, relocate = FALSE; | |
2965 | ||
2966 | BFD_ASSERT (sreloc != NULL); | |
2967 | skip = FALSE; | |
2968 | outrel.r_offset = | |
2969 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2970 | rel->r_offset); | |
2971 | if (outrel.r_offset == (bfd_vma) -1) | |
2972 | skip = TRUE; | |
2973 | else if (outrel.r_offset == (bfd_vma) -2) | |
2974 | skip = TRUE, relocate = TRUE; | |
2975 | outrel.r_offset += (input_section->output_section->vma | |
2976 | + input_section->output_offset); | |
2977 | if (skip) | |
2978 | memset (&outrel, 0, sizeof outrel); | |
2979 | else | |
2980 | { | |
2981 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type); | |
2982 | outrel.r_addend = relocation - dtpoff_base (info) | |
2983 | + rel->r_addend; | |
2984 | } | |
2985 | ||
2986 | SPARC_ELF_APPEND_RELA (htab, output_bfd, sreloc, &outrel); | |
2987 | continue; | |
2988 | } | |
2989 | relocation = tpoff (info, relocation); | |
2990 | break; | |
2991 | ||
2992 | case R_SPARC_TLS_LDM_CALL: | |
2993 | if (! info->shared) | |
2994 | { | |
2995 | /* mov %g0, %o0 */ | |
2996 | bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset); | |
2997 | continue; | |
2998 | } | |
2999 | /* Fall through */ | |
3000 | ||
3001 | case R_SPARC_TLS_GD_CALL: | |
3002 | tls_type = GOT_UNKNOWN; | |
3003 | if (h == NULL && local_got_offsets) | |
3004 | tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; | |
3005 | else if (h != NULL) | |
3006 | tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; | |
3007 | if (! info->shared | |
3008 | || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE)) | |
3009 | { | |
3010 | bfd_vma insn; | |
3011 | ||
3012 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
3013 | { | |
3014 | /* GD -> LE */ | |
3015 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); | |
3016 | continue; | |
3017 | } | |
3018 | ||
3019 | /* GD -> IE */ | |
3020 | if (rel + 1 < relend | |
3021 | && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD | |
3022 | && rel[1].r_offset == rel->r_offset + 4 | |
3023 | && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx | |
3024 | && (((insn = bfd_get_32 (input_bfd, | |
3025 | contents + rel[1].r_offset)) | |
3026 | >> 25) & 0x1f) == 8) | |
3027 | { | |
3028 | /* We have | |
3029 | call __tls_get_addr, %tgd_call(foo) | |
3030 | add %reg1, %reg2, %o0, %tgd_add(foo) | |
3031 | and change it into IE: | |
3032 | {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo) | |
3033 | add %g7, %o0, %o0, %tie_add(foo). | |
3034 | add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2, | |
3035 | ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2, | |
3036 | ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */ | |
3037 | bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000), | |
3038 | contents + rel->r_offset); | |
3039 | bfd_put_32 (output_bfd, 0x9001c008, | |
3040 | contents + rel->r_offset + 4); | |
3041 | rel++; | |
3042 | continue; | |
3043 | } | |
3044 | ||
3045 | bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset); | |
3046 | continue; | |
3047 | } | |
3048 | ||
3049 | h = (struct elf_link_hash_entry *) | |
3050 | bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, | |
3051 | FALSE, TRUE); | |
3052 | BFD_ASSERT (h != NULL); | |
3053 | r_type = R_SPARC_WPLT30; | |
3054 | howto = _bfd_sparc_elf_howto_table + r_type; | |
3055 | goto r_sparc_wplt30; | |
3056 | ||
3057 | case R_SPARC_TLS_GD_ADD: | |
3058 | tls_type = GOT_UNKNOWN; | |
3059 | if (h == NULL && local_got_offsets) | |
3060 | tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; | |
3061 | else if (h != NULL) | |
3062 | tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; | |
3063 | if (! info->shared || tls_type == GOT_TLS_IE) | |
3064 | { | |
3065 | /* add %reg1, %reg2, %reg3, %tgd_add(foo) | |
3066 | changed into IE: | |
3067 | {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo) | |
3068 | or LE: | |
3069 | add %g7, %reg2, %reg3. */ | |
3070 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3071 | if ((h != NULL && h->dynindx != -1) || info->shared) | |
3072 | relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000); | |
3073 | else | |
3074 | relocation = (insn & ~0x7c000) | 0x1c000; | |
3075 | bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); | |
3076 | } | |
3077 | continue; | |
3078 | ||
3079 | case R_SPARC_TLS_LDM_ADD: | |
3080 | if (! info->shared) | |
3081 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); | |
3082 | continue; | |
3083 | ||
3084 | case R_SPARC_TLS_LDO_ADD: | |
3085 | if (! info->shared) | |
3086 | { | |
3087 | /* Change rs1 into %g7. */ | |
3088 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3089 | insn = (insn & ~0x7c000) | 0x1c000; | |
3090 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
3091 | } | |
3092 | continue; | |
3093 | ||
3094 | case R_SPARC_TLS_IE_LD: | |
3095 | case R_SPARC_TLS_IE_LDX: | |
3096 | if (! info->shared && (h == NULL || h->dynindx == -1)) | |
3097 | { | |
3098 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3099 | int rs2 = insn & 0x1f; | |
3100 | int rd = (insn >> 25) & 0x1f; | |
3101 | ||
3102 | if (rs2 == rd) | |
3103 | relocation = SPARC_NOP; | |
3104 | else | |
3105 | relocation = 0x80100000 | (insn & 0x3e00001f); | |
3106 | bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); | |
3107 | } | |
3108 | continue; | |
3109 | ||
3110 | case R_SPARC_TLS_IE_ADD: | |
3111 | /* Totally useless relocation. */ | |
3112 | continue; | |
3113 | ||
3114 | case R_SPARC_TLS_DTPOFF32: | |
3115 | case R_SPARC_TLS_DTPOFF64: | |
3116 | relocation -= dtpoff_base (info); | |
3117 | break; | |
3118 | ||
3119 | default: | |
3120 | break; | |
3121 | } | |
3122 | ||
3123 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
3124 | because such sections are not SEC_ALLOC and thus ld.so will | |
3125 | not process them. */ | |
3126 | if (unresolved_reloc | |
3127 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
3128 | && h->def_dynamic)) | |
3129 | (*_bfd_error_handler) | |
3130 | (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), | |
3131 | input_bfd, | |
3132 | input_section, | |
3133 | (long) rel->r_offset, | |
3134 | h->root.root.string); | |
3135 | ||
3136 | r = bfd_reloc_continue; | |
3137 | if (r_type == R_SPARC_OLO10) | |
3138 | { | |
3139 | bfd_vma x; | |
3140 | ||
3141 | if (! ABI_64_P (output_bfd)) | |
3142 | abort (); | |
3143 | ||
3144 | relocation += rel->r_addend; | |
3145 | relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); | |
3146 | ||
3147 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3148 | x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); | |
3149 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3150 | ||
3151 | r = bfd_check_overflow (howto->complain_on_overflow, | |
3152 | howto->bitsize, howto->rightshift, | |
3153 | bfd_arch_bits_per_address (input_bfd), | |
3154 | relocation); | |
3155 | } | |
3156 | else if (r_type == R_SPARC_WDISP16) | |
3157 | { | |
3158 | bfd_vma x; | |
3159 | ||
3160 | relocation += rel->r_addend; | |
3161 | relocation -= (input_section->output_section->vma | |
3162 | + input_section->output_offset); | |
3163 | relocation -= rel->r_offset; | |
3164 | ||
3165 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3166 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
3167 | | ((relocation >> 2) & 0x3fff)); | |
3168 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3169 | ||
3170 | r = bfd_check_overflow (howto->complain_on_overflow, | |
3171 | howto->bitsize, howto->rightshift, | |
3172 | bfd_arch_bits_per_address (input_bfd), | |
3173 | relocation); | |
3174 | } | |
3175 | else if (r_type == R_SPARC_REV32) | |
3176 | { | |
3177 | bfd_vma x; | |
3178 | ||
3179 | relocation = relocation + rel->r_addend; | |
3180 | ||
3181 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3182 | x = x + relocation; | |
3183 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); | |
3184 | r = bfd_reloc_ok; | |
3185 | } | |
3186 | else if (r_type == R_SPARC_TLS_LDO_HIX22 | |
3187 | || r_type == R_SPARC_TLS_LE_HIX22) | |
3188 | { | |
3189 | bfd_vma x; | |
3190 | ||
3191 | relocation += rel->r_addend; | |
3192 | if (r_type == R_SPARC_TLS_LE_HIX22) | |
3193 | relocation ^= MINUS_ONE; | |
3194 | ||
3195 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3196 | x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
3197 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3198 | r = bfd_reloc_ok; | |
3199 | } | |
3200 | else if (r_type == R_SPARC_TLS_LDO_LOX10 | |
3201 | || r_type == R_SPARC_TLS_LE_LOX10) | |
3202 | { | |
3203 | bfd_vma x; | |
3204 | ||
3205 | relocation += rel->r_addend; | |
3206 | relocation &= 0x3ff; | |
3207 | if (r_type == R_SPARC_TLS_LE_LOX10) | |
3208 | relocation |= 0x1c00; | |
3209 | ||
3210 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3211 | x = (x & ~(bfd_vma) 0x1fff) | relocation; | |
3212 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3213 | ||
3214 | r = bfd_reloc_ok; | |
3215 | } | |
3216 | else if (r_type == R_SPARC_HIX22) | |
3217 | { | |
3218 | bfd_vma x; | |
3219 | ||
3220 | relocation += rel->r_addend; | |
3221 | relocation = relocation ^ MINUS_ONE; | |
3222 | ||
3223 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3224 | x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
3225 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3226 | ||
3227 | r = bfd_check_overflow (howto->complain_on_overflow, | |
3228 | howto->bitsize, howto->rightshift, | |
3229 | bfd_arch_bits_per_address (input_bfd), | |
3230 | relocation); | |
3231 | } | |
3232 | else if (r_type == R_SPARC_LOX10) | |
3233 | { | |
3234 | bfd_vma x; | |
3235 | ||
3236 | relocation += rel->r_addend; | |
3237 | relocation = (relocation & 0x3ff) | 0x1c00; | |
3238 | ||
3239 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3240 | x = (x & ~(bfd_vma) 0x1fff) | relocation; | |
3241 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3242 | ||
3243 | r = bfd_reloc_ok; | |
3244 | } | |
3245 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) | |
3246 | && sec_do_relax (input_section) | |
3247 | && rel->r_offset + 4 < input_section->size) | |
3248 | { | |
3249 | #define G0 0 | |
3250 | #define O7 15 | |
3251 | #define XCC (2 << 20) | |
3252 | #define COND(x) (((x)&0xf)<<25) | |
3253 | #define CONDA COND(0x8) | |
3254 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) | |
3255 | #define INSN_BA (F2(0,2) | CONDA) | |
3256 | #define INSN_OR F3(2, 0x2, 0) | |
3257 | #define INSN_NOP F2(0,4) | |
3258 | ||
3259 | bfd_vma x, y; | |
3260 | ||
3261 | /* If the instruction is a call with either: | |
3262 | restore | |
3263 | arithmetic instruction with rd == %o7 | |
3264 | where rs1 != %o7 and rs2 if it is register != %o7 | |
3265 | then we can optimize if the call destination is near | |
3266 | by changing the call into a branch always. */ | |
3267 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3268 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
3269 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) | |
3270 | { | |
3271 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ | |
3272 | || ((y & OP3(0x28)) == 0 /* arithmetic */ | |
3273 | && (y & RD(~0)) == RD(O7))) | |
3274 | && (y & RS1(~0)) != RS1(O7) | |
3275 | && ((y & F3I(~0)) | |
3276 | || (y & RS2(~0)) != RS2(O7))) | |
3277 | { | |
3278 | bfd_vma reloc; | |
3279 | ||
3280 | reloc = relocation + rel->r_addend - rel->r_offset; | |
3281 | reloc -= (input_section->output_section->vma | |
3282 | + input_section->output_offset); | |
3283 | ||
3284 | /* Ensure the branch fits into simm22. */ | |
3285 | if ((reloc & 3) == 0 | |
3286 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 | |
3287 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) | |
3288 | { | |
3289 | reloc >>= 2; | |
3290 | ||
3291 | /* Check whether it fits into simm19. */ | |
3292 | if (((reloc & 0x3c0000) == 0 | |
3293 | || (reloc & 0x3c0000) == 0x3c0000) | |
3294 | && (ABI_64_P (output_bfd) | |
3295 | || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) | |
3296 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ | |
3297 | else | |
3298 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ | |
3299 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
3300 | r = bfd_reloc_ok; | |
3301 | if (rel->r_offset >= 4 | |
3302 | && (y & (0xffffffff ^ RS1(~0))) | |
3303 | == (INSN_OR | RD(O7) | RS2(G0))) | |
3304 | { | |
3305 | bfd_vma z; | |
3306 | unsigned int reg; | |
3307 | ||
3308 | z = bfd_get_32 (input_bfd, | |
3309 | contents + rel->r_offset - 4); | |
3310 | if ((z & (0xffffffff ^ RD(~0))) | |
3311 | != (INSN_OR | RS1(O7) | RS2(G0))) | |
3312 | break; | |
3313 | ||
3314 | /* The sequence was | |
3315 | or %o7, %g0, %rN | |
3316 | call foo | |
3317 | or %rN, %g0, %o7 | |
3318 | ||
3319 | If call foo was replaced with ba, replace | |
3320 | or %rN, %g0, %o7 with nop. */ | |
3321 | ||
3322 | reg = (y & RS1(~0)) >> 14; | |
3323 | if (reg != ((z & RD(~0)) >> 25) | |
3324 | || reg == G0 || reg == O7) | |
3325 | break; | |
3326 | ||
3327 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, | |
3328 | contents + rel->r_offset + 4); | |
3329 | } | |
3330 | ||
3331 | } | |
3332 | } | |
3333 | } | |
3334 | } | |
3335 | ||
3336 | if (r == bfd_reloc_continue) | |
3337 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3338 | contents, rel->r_offset, | |
3339 | relocation, rel->r_addend); | |
3340 | ||
3341 | if (r != bfd_reloc_ok) | |
3342 | { | |
3343 | switch (r) | |
3344 | { | |
3345 | default: | |
3346 | case bfd_reloc_outofrange: | |
3347 | abort (); | |
3348 | case bfd_reloc_overflow: | |
3349 | { | |
3350 | const char *name; | |
3351 | ||
3352 | if (h != NULL) | |
3353 | name = NULL; | |
3354 | else | |
3355 | { | |
3356 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3357 | symtab_hdr->sh_link, | |
3358 | sym->st_name); | |
3359 | if (name == NULL) | |
3360 | return FALSE; | |
3361 | if (*name == '\0') | |
3362 | name = bfd_section_name (input_bfd, sec); | |
3363 | } | |
3364 | if (! ((*info->callbacks->reloc_overflow) | |
3365 | (info, (h ? &h->root : NULL), name, howto->name, | |
3366 | (bfd_vma) 0, input_bfd, input_section, | |
3367 | rel->r_offset))) | |
3368 | return FALSE; | |
3369 | } | |
3370 | break; | |
3371 | } | |
3372 | } | |
3373 | } | |
3374 | ||
3375 | return TRUE; | |
3376 | } | |
3377 | ||
3378 | /* Finish up dynamic symbol handling. We set the contents of various | |
3379 | dynamic sections here. */ | |
3380 | ||
3381 | bfd_boolean | |
3382 | _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd, | |
3383 | struct bfd_link_info *info, | |
3384 | struct elf_link_hash_entry *h, | |
3385 | Elf_Internal_Sym *sym) | |
3386 | { | |
3387 | bfd *dynobj; | |
3388 | struct _bfd_sparc_elf_link_hash_table *htab; | |
3389 | ||
3390 | htab = _bfd_sparc_elf_hash_table (info); | |
3391 | dynobj = htab->elf.dynobj; | |
3392 | ||
3393 | if (h->plt.offset != (bfd_vma) -1) | |
3394 | { | |
3395 | asection *splt; | |
3396 | asection *srela; | |
3397 | Elf_Internal_Rela rela; | |
3398 | bfd_byte *loc; | |
3399 | bfd_vma r_offset; | |
3400 | int rela_index; | |
3401 | ||
3402 | /* This symbol has an entry in the PLT. Set it up. */ | |
3403 | ||
3404 | BFD_ASSERT (h->dynindx != -1); | |
3405 | ||
3406 | splt = htab->splt; | |
3407 | srela = htab->srelplt; | |
3408 | BFD_ASSERT (splt != NULL && srela != NULL); | |
3409 | ||
3410 | /* Fill in the entry in the procedure linkage table. */ | |
3411 | rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt, | |
3412 | h->plt.offset, splt->size, | |
3413 | &r_offset); | |
3414 | ||
3415 | /* Fill in the entry in the .rela.plt section. */ | |
3416 | rela.r_offset = r_offset | |
3417 | + (splt->output_section->vma + splt->output_offset); | |
3418 | if (! ABI_64_P (output_bfd) | |
3419 | || h->plt.offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) | |
3420 | { | |
3421 | rela.r_addend = 0; | |
3422 | } | |
3423 | else | |
3424 | { | |
3425 | rela.r_addend = -(h->plt.offset + 4) | |
3426 | -(splt->output_section->vma + splt->output_offset); | |
3427 | } | |
3428 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_JMP_SLOT); | |
3429 | ||
3430 | /* Adjust for the first 4 reserved elements in the .plt section | |
3431 | when setting the offset in the .rela.plt section. | |
3432 | Sun forgot to read their own ABI and copied elf32-sparc behaviour, | |
3433 | thus .plt[4] has corresponding .rela.plt[0] and so on. */ | |
3434 | ||
3435 | loc = srela->contents; | |
e459dc7b | 3436 | #ifdef BFD64 |
22b75d0a DM |
3437 | if (ABI_64_P (output_bfd)) |
3438 | { | |
3439 | loc += rela_index * sizeof (Elf64_External_Rela); | |
3440 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3441 | } | |
3442 | else | |
e459dc7b | 3443 | #endif |
22b75d0a DM |
3444 | { |
3445 | loc += rela_index * sizeof (Elf32_External_Rela); | |
3446 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3447 | } | |
3448 | ||
3449 | if (!h->def_regular) | |
3450 | { | |
3451 | /* Mark the symbol as undefined, rather than as defined in | |
3452 | the .plt section. Leave the value alone. */ | |
3453 | sym->st_shndx = SHN_UNDEF; | |
3454 | /* If the symbol is weak, we do need to clear the value. | |
3455 | Otherwise, the PLT entry would provide a definition for | |
3456 | the symbol even if the symbol wasn't defined anywhere, | |
3457 | and so the symbol would never be NULL. */ | |
3458 | if (!h->ref_regular_nonweak) | |
3459 | sym->st_value = 0; | |
3460 | } | |
3461 | } | |
3462 | ||
3463 | if (h->got.offset != (bfd_vma) -1 | |
3464 | && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD | |
3465 | && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE) | |
3466 | { | |
3467 | asection *sgot; | |
3468 | asection *srela; | |
3469 | Elf_Internal_Rela rela; | |
3470 | ||
3471 | /* This symbol has an entry in the GOT. Set it up. */ | |
3472 | ||
3473 | sgot = htab->sgot; | |
3474 | srela = htab->srelgot; | |
3475 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
3476 | ||
3477 | rela.r_offset = (sgot->output_section->vma | |
3478 | + sgot->output_offset | |
3479 | + (h->got.offset &~ (bfd_vma) 1)); | |
3480 | ||
3481 | /* If this is a -Bsymbolic link, and the symbol is defined | |
3482 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
3483 | the symbol was forced to be local because of a version file. | |
3484 | The entry in the global offset table will already have been | |
3485 | initialized in the relocate_section function. */ | |
3486 | if (info->shared | |
3487 | && (info->symbolic || h->dynindx == -1) | |
3488 | && h->def_regular) | |
3489 | { | |
3490 | asection *sec = h->root.u.def.section; | |
3491 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE); | |
3492 | rela.r_addend = (h->root.u.def.value | |
3493 | + sec->output_section->vma | |
3494 | + sec->output_offset); | |
3495 | } | |
3496 | else | |
3497 | { | |
3498 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT); | |
3499 | rela.r_addend = 0; | |
3500 | } | |
3501 | ||
3502 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, | |
3503 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); | |
3504 | SPARC_ELF_APPEND_RELA (htab, output_bfd, srela, &rela); | |
3505 | } | |
3506 | ||
3507 | if (h->needs_copy) | |
3508 | { | |
3509 | asection *s; | |
3510 | Elf_Internal_Rela rela; | |
3511 | ||
3512 | /* This symbols needs a copy reloc. Set it up. */ | |
3513 | BFD_ASSERT (h->dynindx != -1); | |
3514 | ||
3515 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
3516 | ".rela.bss"); | |
3517 | BFD_ASSERT (s != NULL); | |
3518 | ||
3519 | rela.r_offset = (h->root.u.def.value | |
3520 | + h->root.u.def.section->output_section->vma | |
3521 | + h->root.u.def.section->output_offset); | |
3522 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY); | |
3523 | rela.r_addend = 0; | |
3524 | SPARC_ELF_APPEND_RELA (htab, output_bfd, s, &rela); | |
3525 | } | |
3526 | ||
3527 | /* Mark some specially defined symbols as absolute. */ | |
3528 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3529 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
3530 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
3531 | sym->st_shndx = SHN_ABS; | |
3532 | ||
3533 | return TRUE; | |
3534 | } | |
3535 | ||
3536 | /* Finish up the dynamic sections. */ | |
3537 | ||
e459dc7b | 3538 | #ifdef BFD64 |
22b75d0a DM |
3539 | static bfd_boolean |
3540 | sparc64_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, | |
3541 | bfd *dynobj, asection *sdyn, | |
3542 | asection *splt ATTRIBUTE_UNUSED) | |
3543 | { | |
3544 | Elf64_External_Dyn *dyncon, *dynconend; | |
3545 | int stt_regidx = -1; | |
3546 | ||
3547 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
3548 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); | |
3549 | for (; dyncon < dynconend; dyncon++) | |
3550 | { | |
3551 | Elf_Internal_Dyn dyn; | |
3552 | const char *name; | |
3553 | bfd_boolean size; | |
3554 | ||
3555 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
3556 | ||
3557 | switch (dyn.d_tag) | |
3558 | { | |
3559 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; | |
3560 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; | |
3561 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; | |
3562 | case DT_SPARC_REGISTER: | |
3563 | if (stt_regidx == -1) | |
3564 | { | |
3565 | stt_regidx = | |
3566 | _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); | |
3567 | if (stt_regidx == -1) | |
3568 | return FALSE; | |
3569 | } | |
3570 | dyn.d_un.d_val = stt_regidx++; | |
3571 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3572 | /* fallthrough */ | |
3573 | default: name = NULL; size = FALSE; break; | |
3574 | } | |
3575 | ||
3576 | if (name != NULL) | |
3577 | { | |
3578 | asection *s; | |
3579 | ||
3580 | s = bfd_get_section_by_name (output_bfd, name); | |
3581 | if (s == NULL) | |
3582 | dyn.d_un.d_val = 0; | |
3583 | else | |
3584 | { | |
3585 | if (! size) | |
3586 | dyn.d_un.d_ptr = s->vma; | |
3587 | else | |
3588 | dyn.d_un.d_val = s->size; | |
3589 | } | |
3590 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3591 | } | |
3592 | } | |
3593 | return TRUE; | |
3594 | } | |
e459dc7b | 3595 | #endif |
22b75d0a DM |
3596 | |
3597 | static bfd_boolean | |
3598 | sparc32_finish_dyn (bfd *output_bfd, | |
3599 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3600 | bfd *dynobj, asection *sdyn, | |
3601 | asection *splt ATTRIBUTE_UNUSED) | |
3602 | { | |
3603 | Elf32_External_Dyn *dyncon, *dynconend; | |
3604 | ||
3605 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3606 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
3607 | for (; dyncon < dynconend; dyncon++) | |
3608 | { | |
3609 | Elf_Internal_Dyn dyn; | |
3610 | const char *name; | |
3611 | bfd_boolean size; | |
3612 | ||
3613 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3614 | ||
3615 | switch (dyn.d_tag) | |
3616 | { | |
3617 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; | |
3618 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; | |
3619 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; | |
3620 | default: name = NULL; size = FALSE; break; | |
3621 | } | |
3622 | ||
3623 | if (name != NULL) | |
3624 | { | |
3625 | asection *s; | |
3626 | ||
3627 | s = bfd_get_section_by_name (output_bfd, name); | |
3628 | if (s == NULL) | |
3629 | dyn.d_un.d_val = 0; | |
3630 | else | |
3631 | { | |
3632 | if (! size) | |
3633 | dyn.d_un.d_ptr = s->vma; | |
3634 | else | |
3635 | dyn.d_un.d_val = s->size; | |
3636 | } | |
3637 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3638 | } | |
3639 | } | |
3640 | return TRUE; | |
3641 | } | |
3642 | ||
3643 | bfd_boolean | |
3644 | _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) | |
3645 | { | |
3646 | bfd *dynobj; | |
3647 | asection *sdyn; | |
3648 | struct _bfd_sparc_elf_link_hash_table *htab; | |
3649 | ||
3650 | htab = _bfd_sparc_elf_hash_table (info); | |
3651 | dynobj = htab->elf.dynobj; | |
3652 | ||
3653 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
3654 | ||
3655 | if (elf_hash_table (info)->dynamic_sections_created) | |
3656 | { | |
3657 | asection *splt; | |
3658 | bfd_boolean ret; | |
3659 | ||
3660 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3661 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
3662 | ||
e459dc7b | 3663 | #ifdef BFD64 |
22b75d0a DM |
3664 | if (ABI_64_P (output_bfd)) |
3665 | ret = sparc64_finish_dyn (output_bfd, info, dynobj, sdyn, splt); | |
3666 | else | |
e459dc7b | 3667 | #endif |
22b75d0a DM |
3668 | ret = sparc32_finish_dyn (output_bfd, info, dynobj, sdyn, splt); |
3669 | ||
3670 | if (ret != TRUE) | |
3671 | return ret; | |
3672 | ||
3673 | /* Initialize the contents of the .plt section. */ | |
3674 | if (splt->size > 0) | |
3675 | { | |
3676 | if (ABI_64_P (output_bfd)) | |
3677 | memset (splt->contents, 0, 4 * PLT64_ENTRY_SIZE); | |
3678 | else | |
3679 | { | |
3680 | memset (splt->contents, 0, 4 * PLT32_ENTRY_SIZE); | |
3681 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, | |
3682 | splt->contents + splt->size - 4); | |
3683 | } | |
3684 | } | |
3685 | ||
3686 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
3687 | (ABI_64_P (output_bfd) ? PLT64_ENTRY_SIZE : PLT32_ENTRY_SIZE); | |
3688 | } | |
3689 | ||
3690 | /* Set the first entry in the global offset table to the address of | |
3691 | the dynamic section. */ | |
3692 | if (htab->sgot && htab->sgot->size > 0) | |
3693 | { | |
3694 | bfd_vma val = (sdyn ? | |
3695 | sdyn->output_section->vma + sdyn->output_offset : | |
3696 | 0); | |
3697 | ||
3698 | SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->sgot->contents); | |
3699 | } | |
3700 | ||
3701 | if (htab->sgot) | |
3702 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = | |
3703 | SPARC_ELF_WORD_BYTES (htab); | |
3704 | ||
3705 | return TRUE; | |
3706 | } | |
3707 | ||
3708 | \f | |
3709 | /* Set the right machine number for a SPARC ELF file. */ | |
3710 | ||
3711 | bfd_boolean | |
3712 | _bfd_sparc_elf_object_p (bfd *abfd) | |
3713 | { | |
3714 | if (ABI_64_P (abfd)) | |
3715 | { | |
3716 | unsigned long mach = bfd_mach_sparc_v9; | |
3717 | ||
3718 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) | |
3719 | mach = bfd_mach_sparc_v9b; | |
3720 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
3721 | mach = bfd_mach_sparc_v9a; | |
3722 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); | |
3723 | } | |
3724 | else | |
3725 | { | |
3726 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) | |
3727 | { | |
3728 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) | |
3729 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
3730 | bfd_mach_sparc_v8plusb); | |
3731 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
3732 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
3733 | bfd_mach_sparc_v8plusa); | |
3734 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) | |
3735 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
3736 | bfd_mach_sparc_v8plus); | |
3737 | else | |
3738 | return FALSE; | |
3739 | } | |
3740 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) | |
3741 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
3742 | bfd_mach_sparc_sparclite_le); | |
3743 | else | |
3744 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); | |
3745 | } | |
3746 | } | |
3747 | ||
3748 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
3749 | or (bfd_vma) -1 if it should not be included. */ | |
3750 | ||
3751 | bfd_vma | |
3752 | _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel) | |
3753 | { | |
3754 | if (ABI_64_P (plt->owner)) | |
3755 | { | |
3756 | bfd_vma j; | |
3757 | ||
3758 | i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE; | |
3759 | if (i < PLT64_LARGE_THRESHOLD) | |
3760 | return plt->vma + i * PLT64_ENTRY_SIZE; | |
3761 | ||
3762 | j = (i - PLT64_LARGE_THRESHOLD) % 160; | |
3763 | i -= j; | |
3764 | return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6; | |
3765 | } | |
3766 | else | |
3767 | return rel->address; | |
3768 | } |