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252b5132 RH |
1 | /* SPARC-specific support for 32-bit ELF |
2 | Copyright (C) 1993, 94, 95, 96, 97, 98, 1999 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 | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "bfd.h" | |
21 | #include "sysdep.h" | |
22 | #include "bfdlink.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/sparc.h" | |
26 | ||
27 | static reloc_howto_type *elf32_sparc_reloc_type_lookup | |
28 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
29 | static void elf32_sparc_info_to_howto | |
30 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
31 | static boolean elf32_sparc_check_relocs | |
32 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
33 | const Elf_Internal_Rela *)); | |
34 | static boolean elf32_sparc_adjust_dynamic_symbol | |
35 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
36 | static boolean elf32_sparc_adjust_dynindx | |
37 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
38 | static boolean elf32_sparc_size_dynamic_sections | |
39 | PARAMS ((bfd *, struct bfd_link_info *)); | |
40 | static boolean elf32_sparc_relocate_section | |
41 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
42 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
43 | static boolean elf32_sparc_finish_dynamic_symbol | |
44 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
45 | Elf_Internal_Sym *)); | |
46 | static boolean elf32_sparc_finish_dynamic_sections | |
47 | PARAMS ((bfd *, struct bfd_link_info *)); | |
48 | static boolean elf32_sparc_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
49 | static boolean elf32_sparc_object_p | |
50 | PARAMS ((bfd *)); | |
51 | static void elf32_sparc_final_write_processing | |
52 | PARAMS ((bfd *, boolean)); | |
53 | \f | |
54 | /* The relocation "howto" table. */ | |
55 | ||
56 | static bfd_reloc_status_type sparc_elf_notsupported_reloc | |
57 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
58 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
59 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
60 | ||
61 | reloc_howto_type _bfd_sparc_elf_howto_table[] = | |
62 | { | |
63 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
64 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), | |
65 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), | |
66 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), | |
67 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), | |
68 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), | |
69 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), | |
70 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), | |
71 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), | |
72 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), | |
73 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), | |
74 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), | |
75 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), | |
76 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), | |
77 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), | |
78 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), | |
79 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), | |
80 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), | |
81 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), | |
82 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), | |
83 | 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), | |
84 | 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), | |
85 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), | |
86 | HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), | |
87 | HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), | |
88 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), | |
89 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), | |
90 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), | |
91 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), | |
92 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), | |
93 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), | |
94 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), | |
95 | /* These are for sparc64 in a 64 bit environment. | |
96 | Values need to be here because the table is indexed by reloc number. */ | |
97 | HOWTO(R_SPARC_64, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", false,0,0x00000000,true), | |
98 | HOWTO(R_SPARC_OLO10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", false,0,0x00000000,true), | |
99 | HOWTO(R_SPARC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", false,0,0x00000000,true), | |
100 | HOWTO(R_SPARC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", false,0,0x00000000,true), | |
101 | HOWTO(R_SPARC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", false,0,0x00000000,true), | |
102 | HOWTO(R_SPARC_PC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", false,0,0x00000000,true), | |
103 | HOWTO(R_SPARC_PC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", false,0,0x00000000,true), | |
104 | HOWTO(R_SPARC_PC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", false,0,0x00000000,true), | |
105 | /* End sparc64 in 64 bit environment values. | |
106 | The following are for sparc64 in a 32 bit environment. */ | |
107 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), | |
108 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), | |
109 | 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), | |
110 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), | |
111 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), | |
112 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), | |
113 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
114 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
115 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
116 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
117 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
118 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
119 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
120 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
121 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
122 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
123 | HOWTO(R_SPARC_REV32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", false,0,0xffffffff,true), | |
124 | }; | |
125 | static reloc_howto_type elf32_sparc_vtinherit_howto = | |
126 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", false,0, 0, false); | |
127 | static reloc_howto_type elf32_sparc_vtentry_howto = | |
128 | 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); | |
129 | ||
130 | ||
131 | struct elf_reloc_map { | |
132 | bfd_reloc_code_real_type bfd_reloc_val; | |
133 | unsigned char elf_reloc_val; | |
134 | }; | |
135 | ||
136 | static CONST struct elf_reloc_map sparc_reloc_map[] = | |
137 | { | |
138 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
139 | { BFD_RELOC_16, R_SPARC_16, }, | |
140 | { BFD_RELOC_8, R_SPARC_8 }, | |
141 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
142 | { BFD_RELOC_CTOR, R_SPARC_32 }, | |
143 | { BFD_RELOC_32, R_SPARC_32 }, | |
144 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
145 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
146 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
147 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
148 | { BFD_RELOC_SPARC22, R_SPARC_22 }, | |
149 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
150 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
151 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
152 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
153 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
154 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
155 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
156 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
157 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
158 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
159 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
160 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
161 | /* ??? Doesn't dwarf use this? */ | |
162 | /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ | |
163 | {BFD_RELOC_SPARC_10, R_SPARC_10}, | |
164 | {BFD_RELOC_SPARC_11, R_SPARC_11}, | |
165 | {BFD_RELOC_SPARC_64, R_SPARC_64}, | |
166 | {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10}, | |
167 | {BFD_RELOC_SPARC_HH22, R_SPARC_HH22}, | |
168 | {BFD_RELOC_SPARC_HM10, R_SPARC_HM10}, | |
169 | {BFD_RELOC_SPARC_LM22, R_SPARC_LM22}, | |
170 | {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22}, | |
171 | {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10}, | |
172 | {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22}, | |
173 | {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16}, | |
174 | {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19}, | |
175 | {BFD_RELOC_SPARC_7, R_SPARC_7}, | |
176 | {BFD_RELOC_SPARC_5, R_SPARC_5}, | |
177 | {BFD_RELOC_SPARC_6, R_SPARC_6}, | |
178 | {BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, | |
179 | {BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT}, | |
180 | {BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY}, | |
181 | }; | |
182 | ||
183 | static reloc_howto_type * | |
184 | elf32_sparc_reloc_type_lookup (abfd, code) | |
185 | bfd *abfd; | |
186 | bfd_reloc_code_real_type code; | |
187 | { | |
188 | unsigned int i; | |
189 | ||
190 | switch (code) | |
191 | { | |
192 | case BFD_RELOC_VTABLE_INHERIT: | |
193 | return &elf32_sparc_vtinherit_howto; | |
194 | ||
195 | case BFD_RELOC_VTABLE_ENTRY: | |
196 | return &elf32_sparc_vtentry_howto; | |
197 | ||
198 | default: | |
199 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
200 | { | |
201 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
202 | return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
203 | } | |
204 | } | |
205 | bfd_set_error (bfd_error_bad_value); | |
206 | return NULL; | |
207 | } | |
208 | ||
209 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, | |
210 | and elf64-sparc.c has its own copy. */ | |
211 | ||
212 | static void | |
213 | elf32_sparc_info_to_howto (abfd, cache_ptr, dst) | |
214 | bfd *abfd; | |
215 | arelent *cache_ptr; | |
216 | Elf_Internal_Rela *dst; | |
217 | { | |
60dac299 RH |
218 | switch (ELF32_R_TYPE(dst->r_info)) |
219 | { | |
220 | case R_SPARC_GNU_VTINHERIT: | |
221 | cache_ptr->howto = &elf32_sparc_vtinherit_howto; | |
222 | break; | |
223 | ||
224 | case R_SPARC_GNU_VTENTRY: | |
225 | cache_ptr->howto = &elf32_sparc_vtentry_howto; | |
226 | break; | |
227 | ||
228 | default: | |
229 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); | |
230 | cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
231 | } | |
252b5132 RH |
232 | } |
233 | \f | |
234 | /* For unsupported relocs. */ | |
235 | ||
236 | static bfd_reloc_status_type | |
237 | sparc_elf_notsupported_reloc (abfd, | |
238 | reloc_entry, | |
239 | symbol, | |
240 | data, | |
241 | input_section, | |
242 | output_bfd, | |
243 | error_message) | |
244 | bfd *abfd; | |
245 | arelent *reloc_entry; | |
246 | asymbol *symbol; | |
247 | PTR data; | |
248 | asection *input_section; | |
249 | bfd *output_bfd; | |
250 | char **error_message; | |
251 | { | |
252 | return bfd_reloc_notsupported; | |
253 | } | |
254 | ||
255 | /* Handle the WDISP16 reloc. */ | |
256 | ||
257 | static bfd_reloc_status_type | |
258 | sparc_elf_wdisp16_reloc (abfd, | |
259 | reloc_entry, | |
260 | symbol, | |
261 | data, | |
262 | input_section, | |
263 | output_bfd, | |
264 | error_message) | |
265 | bfd *abfd; | |
266 | arelent *reloc_entry; | |
267 | asymbol *symbol; | |
268 | PTR data; | |
269 | asection *input_section; | |
270 | bfd *output_bfd; | |
271 | char **error_message; | |
272 | { | |
273 | bfd_vma relocation; | |
274 | bfd_vma x; | |
275 | ||
276 | if (output_bfd != (bfd *) NULL | |
277 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
278 | && (! reloc_entry->howto->partial_inplace | |
279 | || reloc_entry->addend == 0)) | |
280 | { | |
281 | reloc_entry->address += input_section->output_offset; | |
282 | return bfd_reloc_ok; | |
283 | } | |
284 | ||
285 | if (output_bfd != NULL) | |
286 | return bfd_reloc_continue; | |
287 | ||
288 | if (reloc_entry->address > input_section->_cooked_size) | |
289 | return bfd_reloc_outofrange; | |
290 | ||
291 | relocation = (symbol->value | |
292 | + symbol->section->output_section->vma | |
293 | + symbol->section->output_offset); | |
294 | relocation += reloc_entry->addend; | |
295 | relocation -= (input_section->output_section->vma | |
296 | + input_section->output_offset); | |
297 | relocation -= reloc_entry->address; | |
298 | ||
299 | x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
300 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
301 | | ((relocation >> 2) & 0x3fff)); | |
302 | bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); | |
303 | ||
304 | if ((bfd_signed_vma) relocation < - 0x40000 | |
305 | || (bfd_signed_vma) relocation > 0x3ffff) | |
306 | return bfd_reloc_overflow; | |
307 | else | |
308 | return bfd_reloc_ok; | |
309 | } | |
310 | \f | |
311 | /* Functions for the SPARC ELF linker. */ | |
312 | ||
313 | /* The name of the dynamic interpreter. This is put in the .interp | |
314 | section. */ | |
315 | ||
316 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
317 | ||
318 | /* The nop opcode we use. */ | |
319 | ||
320 | #define SPARC_NOP 0x01000000 | |
321 | ||
322 | /* The size in bytes of an entry in the procedure linkage table. */ | |
323 | ||
324 | #define PLT_ENTRY_SIZE 12 | |
325 | ||
326 | /* The first four entries in a procedure linkage table are reserved, | |
327 | and the initial contents are unimportant (we zero them out). | |
328 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
329 | supplement to see how this works. */ | |
330 | ||
331 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
332 | #define PLT_ENTRY_WORD0 0x03000000 | |
333 | /* b,a .plt0. We fill in the offset later. */ | |
334 | #define PLT_ENTRY_WORD1 0x30800000 | |
335 | /* nop. */ | |
336 | #define PLT_ENTRY_WORD2 SPARC_NOP | |
337 | ||
338 | /* Look through the relocs for a section during the first phase, and | |
339 | allocate space in the global offset table or procedure linkage | |
340 | table. */ | |
341 | ||
342 | static boolean | |
343 | elf32_sparc_check_relocs (abfd, info, sec, relocs) | |
344 | bfd *abfd; | |
345 | struct bfd_link_info *info; | |
346 | asection *sec; | |
347 | const Elf_Internal_Rela *relocs; | |
348 | { | |
349 | bfd *dynobj; | |
350 | Elf_Internal_Shdr *symtab_hdr; | |
351 | struct elf_link_hash_entry **sym_hashes; | |
352 | bfd_vma *local_got_offsets; | |
353 | const Elf_Internal_Rela *rel; | |
354 | const Elf_Internal_Rela *rel_end; | |
355 | asection *sgot; | |
356 | asection *srelgot; | |
357 | asection *sreloc; | |
358 | ||
359 | if (info->relocateable) | |
360 | return true; | |
361 | ||
362 | dynobj = elf_hash_table (info)->dynobj; | |
363 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
364 | sym_hashes = elf_sym_hashes (abfd); | |
365 | local_got_offsets = elf_local_got_offsets (abfd); | |
366 | ||
367 | sgot = NULL; | |
368 | srelgot = NULL; | |
369 | sreloc = NULL; | |
370 | ||
371 | rel_end = relocs + sec->reloc_count; | |
372 | for (rel = relocs; rel < rel_end; rel++) | |
373 | { | |
374 | unsigned long r_symndx; | |
375 | struct elf_link_hash_entry *h; | |
376 | ||
377 | r_symndx = ELF32_R_SYM (rel->r_info); | |
378 | if (r_symndx < symtab_hdr->sh_info) | |
379 | h = NULL; | |
380 | else | |
381 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
382 | ||
383 | switch (ELF32_R_TYPE (rel->r_info)) | |
384 | { | |
385 | case R_SPARC_GOT10: | |
386 | case R_SPARC_GOT13: | |
387 | case R_SPARC_GOT22: | |
388 | /* This symbol requires a global offset table entry. */ | |
389 | ||
390 | if (dynobj == NULL) | |
391 | { | |
392 | /* Create the .got section. */ | |
393 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
394 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
395 | return false; | |
396 | } | |
397 | ||
398 | if (sgot == NULL) | |
399 | { | |
400 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
401 | BFD_ASSERT (sgot != NULL); | |
402 | } | |
403 | ||
404 | if (srelgot == NULL | |
405 | && (h != NULL || info->shared)) | |
406 | { | |
407 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
408 | if (srelgot == NULL) | |
409 | { | |
410 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
411 | if (srelgot == NULL | |
412 | || ! bfd_set_section_flags (dynobj, srelgot, | |
413 | (SEC_ALLOC | |
414 | | SEC_LOAD | |
415 | | SEC_HAS_CONTENTS | |
416 | | SEC_IN_MEMORY | |
417 | | SEC_LINKER_CREATED | |
418 | | SEC_READONLY)) | |
419 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
420 | return false; | |
421 | } | |
422 | } | |
423 | ||
424 | if (h != NULL) | |
425 | { | |
426 | if (h->got.offset != (bfd_vma) -1) | |
427 | { | |
428 | /* We have already allocated space in the .got. */ | |
429 | break; | |
430 | } | |
431 | h->got.offset = sgot->_raw_size; | |
432 | ||
433 | /* Make sure this symbol is output as a dynamic symbol. */ | |
434 | if (h->dynindx == -1) | |
435 | { | |
436 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
437 | return false; | |
438 | } | |
439 | ||
440 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
441 | } | |
442 | else | |
443 | { | |
444 | /* This is a global offset table entry for a local | |
445 | symbol. */ | |
446 | if (local_got_offsets == NULL) | |
447 | { | |
448 | size_t size; | |
449 | register unsigned int i; | |
450 | ||
451 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
452 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
453 | if (local_got_offsets == NULL) | |
454 | return false; | |
455 | elf_local_got_offsets (abfd) = local_got_offsets; | |
456 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
457 | local_got_offsets[i] = (bfd_vma) -1; | |
458 | } | |
459 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
460 | { | |
461 | /* We have already allocated space in the .got. */ | |
462 | break; | |
463 | } | |
464 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
465 | ||
466 | if (info->shared) | |
467 | { | |
468 | /* If we are generating a shared object, we need to | |
469 | output a R_SPARC_RELATIVE reloc so that the | |
470 | dynamic linker can adjust this GOT entry. */ | |
471 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
472 | } | |
473 | } | |
474 | ||
475 | sgot->_raw_size += 4; | |
476 | ||
477 | /* If the .got section is more than 0x1000 bytes, we add | |
478 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
479 | bit relocations have a greater chance of working. */ | |
480 | if (sgot->_raw_size >= 0x1000 | |
481 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
482 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
483 | ||
484 | break; | |
485 | ||
486 | case R_SPARC_WPLT30: | |
487 | /* This symbol requires a procedure linkage table entry. We | |
488 | actually build the entry in adjust_dynamic_symbol, | |
489 | because this might be a case of linking PIC code without | |
490 | linking in any dynamic objects, in which case we don't | |
491 | need to generate a procedure linkage table after all. */ | |
492 | ||
493 | if (h == NULL) | |
494 | { | |
495 | /* The Solaris native assembler will generate a WPLT30 | |
496 | reloc for a local symbol if you assemble a call from | |
497 | one section to another when using -K pic. We treat | |
498 | it as WDISP30. */ | |
499 | break; | |
500 | } | |
501 | ||
502 | /* Make sure this symbol is output as a dynamic symbol. */ | |
503 | if (h->dynindx == -1) | |
504 | { | |
505 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
506 | return false; | |
507 | } | |
508 | ||
509 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
510 | ||
511 | break; | |
512 | ||
513 | case R_SPARC_PC10: | |
514 | case R_SPARC_PC22: | |
515 | if (h != NULL | |
516 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
517 | break; | |
518 | /* Fall through. */ | |
519 | case R_SPARC_DISP8: | |
520 | case R_SPARC_DISP16: | |
521 | case R_SPARC_DISP32: | |
522 | case R_SPARC_WDISP30: | |
523 | case R_SPARC_WDISP22: | |
524 | case R_SPARC_WDISP19: | |
525 | case R_SPARC_WDISP16: | |
526 | /* If we are linking with -Bsymbolic, we do not need to copy | |
527 | a PC relative reloc against a global symbol which is | |
528 | defined in an object we are including in the link (i.e., | |
529 | DEF_REGULAR is set). FIXME: At this point we have not | |
530 | seen all the input files, so it is possible that | |
531 | DEF_REGULAR is not set now but will be set later (it is | |
532 | never cleared). This needs to be handled as in | |
533 | elf32-i386.c. */ | |
534 | if (h == NULL | |
535 | || (info->symbolic | |
536 | && (h->elf_link_hash_flags | |
537 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
538 | break; | |
539 | /* Fall through. */ | |
540 | case R_SPARC_8: | |
541 | case R_SPARC_16: | |
542 | case R_SPARC_32: | |
543 | case R_SPARC_HI22: | |
544 | case R_SPARC_22: | |
545 | case R_SPARC_13: | |
546 | case R_SPARC_LO10: | |
547 | case R_SPARC_UA32: | |
548 | if (info->shared) | |
549 | { | |
550 | /* When creating a shared object, we must copy these | |
551 | relocs into the output file. We create a reloc | |
552 | section in dynobj and make room for the reloc. */ | |
553 | if (sreloc == NULL) | |
554 | { | |
555 | const char *name; | |
556 | ||
557 | name = (bfd_elf_string_from_elf_section | |
558 | (abfd, | |
559 | elf_elfheader (abfd)->e_shstrndx, | |
560 | elf_section_data (sec)->rel_hdr.sh_name)); | |
561 | if (name == NULL) | |
562 | return false; | |
563 | ||
564 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
565 | && strcmp (bfd_get_section_name (abfd, sec), | |
566 | name + 5) == 0); | |
567 | ||
568 | sreloc = bfd_get_section_by_name (dynobj, name); | |
569 | if (sreloc == NULL) | |
570 | { | |
571 | flagword flags; | |
572 | ||
573 | sreloc = bfd_make_section (dynobj, name); | |
574 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
575 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
576 | if ((sec->flags & SEC_ALLOC) != 0) | |
577 | flags |= SEC_ALLOC | SEC_LOAD; | |
578 | if (sreloc == NULL | |
579 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
580 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
581 | return false; | |
582 | } | |
583 | } | |
584 | ||
585 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
586 | } | |
587 | ||
588 | break; | |
589 | ||
590 | case R_SPARC_GNU_VTINHERIT: | |
591 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
592 | return false; | |
593 | break; | |
594 | ||
595 | case R_SPARC_GNU_VTENTRY: | |
596 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
597 | return false; | |
598 | break; | |
599 | ||
600 | default: | |
601 | break; | |
602 | } | |
603 | } | |
604 | ||
605 | return true; | |
606 | } | |
607 | ||
608 | static asection * | |
609 | elf32_sparc_gc_mark_hook (abfd, info, rel, h, sym) | |
610 | bfd *abfd; | |
611 | struct bfd_link_info *info; | |
612 | Elf_Internal_Rela *rel; | |
613 | struct elf_link_hash_entry *h; | |
614 | Elf_Internal_Sym *sym; | |
615 | { | |
616 | ||
617 | if (h != NULL) | |
618 | { | |
619 | switch (ELF32_R_TYPE (rel->r_info)) | |
620 | { | |
621 | case R_SPARC_GNU_VTINHERIT: | |
622 | case R_SPARC_GNU_VTENTRY: | |
623 | break; | |
624 | ||
625 | default: | |
626 | switch (h->root.type) | |
627 | { | |
628 | case bfd_link_hash_defined: | |
629 | case bfd_link_hash_defweak: | |
630 | return h->root.u.def.section; | |
631 | ||
632 | case bfd_link_hash_common: | |
633 | return h->root.u.c.p->section; | |
634 | } | |
635 | } | |
636 | } | |
637 | else | |
638 | { | |
639 | if (!(elf_bad_symtab (abfd) | |
640 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
641 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
642 | && sym->st_shndx != SHN_COMMON)) | |
643 | { | |
644 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
645 | } | |
646 | } | |
647 | ||
648 | return NULL; | |
649 | } | |
650 | ||
651 | /* Update the got entry reference counts for the section being removed. */ | |
652 | static boolean | |
653 | elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs) | |
654 | bfd *abfd; | |
655 | struct bfd_link_info *info; | |
656 | asection *sec; | |
657 | const Elf_Internal_Rela *relocs; | |
658 | { | |
659 | ||
660 | Elf_Internal_Shdr *symtab_hdr; | |
661 | struct elf_link_hash_entry **sym_hashes; | |
662 | bfd_signed_vma *local_got_refcounts; | |
663 | const Elf_Internal_Rela *rel, *relend; | |
664 | unsigned long r_symndx; | |
665 | struct elf_link_hash_entry *h; | |
666 | ||
667 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
668 | sym_hashes = elf_sym_hashes (abfd); | |
669 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
670 | ||
671 | relend = relocs + sec->reloc_count; | |
672 | for (rel = relocs; rel < relend; rel++) | |
673 | switch (ELF32_R_TYPE (rel->r_info)) | |
674 | { | |
675 | case R_SPARC_GOT10: | |
676 | case R_SPARC_GOT13: | |
677 | case R_SPARC_GOT22: | |
678 | r_symndx = ELF32_R_SYM (rel->r_info); | |
679 | if (r_symndx >= symtab_hdr->sh_info) | |
680 | { | |
681 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
682 | if (h->got.refcount > 0) | |
683 | h->got.refcount--; | |
684 | } | |
685 | else | |
686 | { | |
687 | if (local_got_refcounts[r_symndx] > 0) | |
688 | local_got_refcounts[r_symndx]--; | |
689 | } | |
690 | break; | |
691 | ||
692 | case R_SPARC_PLT32: | |
693 | case R_SPARC_HIPLT22: | |
694 | case R_SPARC_LOPLT10: | |
695 | case R_SPARC_PCPLT32: | |
696 | case R_SPARC_PCPLT10: | |
697 | r_symndx = ELF32_R_SYM (rel->r_info); | |
698 | if (r_symndx >= symtab_hdr->sh_info) | |
699 | { | |
700 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
701 | if (h->plt.refcount > 0) | |
702 | h->plt.refcount--; | |
703 | } | |
704 | break; | |
705 | ||
706 | default: | |
707 | break; | |
708 | } | |
709 | ||
710 | return true; | |
711 | } | |
712 | ||
713 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
714 | regular object. The current definition is in some section of the | |
715 | dynamic object, but we're not including those sections. We have to | |
716 | change the definition to something the rest of the link can | |
717 | understand. */ | |
718 | ||
719 | static boolean | |
720 | elf32_sparc_adjust_dynamic_symbol (info, h) | |
721 | struct bfd_link_info *info; | |
722 | struct elf_link_hash_entry *h; | |
723 | { | |
724 | bfd *dynobj; | |
725 | asection *s; | |
726 | unsigned int power_of_two; | |
727 | ||
728 | dynobj = elf_hash_table (info)->dynobj; | |
729 | ||
730 | /* Make sure we know what is going on here. */ | |
731 | BFD_ASSERT (dynobj != NULL | |
732 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
733 | || h->weakdef != NULL | |
734 | || ((h->elf_link_hash_flags | |
735 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
736 | && (h->elf_link_hash_flags | |
737 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
738 | && (h->elf_link_hash_flags | |
739 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
740 | ||
741 | /* If this is a function, put it in the procedure linkage table. We | |
742 | will fill in the contents of the procedure linkage table later | |
743 | (although we could actually do it here). The STT_NOTYPE | |
744 | condition is a hack specifically for the Oracle libraries | |
745 | delivered for Solaris; for some inexplicable reason, they define | |
746 | some of their functions as STT_NOTYPE when they really should be | |
747 | STT_FUNC. */ | |
748 | if (h->type == STT_FUNC | |
749 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 | |
750 | || (h->type == STT_NOTYPE | |
751 | && (h->root.type == bfd_link_hash_defined | |
752 | || h->root.type == bfd_link_hash_defweak) | |
753 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
754 | { | |
755 | if (! elf_hash_table (info)->dynamic_sections_created | |
756 | || ((!info->shared || info->symbolic || h->dynindx == -1) | |
757 | && (h->elf_link_hash_flags | |
758 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
759 | { | |
760 | /* This case can occur if we saw a WPLT30 reloc in an input | |
761 | file, but none of the input files were dynamic objects. | |
762 | Or, when linking the main application or a -Bsymbolic | |
763 | shared library against PIC code. Or when a global symbol | |
764 | has been made private, e.g. via versioning. | |
765 | ||
766 | In these cases we know what value the symbol will resolve | |
767 | to, so we don't actually need to build a procedure linkage | |
768 | table, and we can just do a WDISP30 reloc instead. */ | |
769 | ||
770 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
771 | return true; | |
772 | } | |
773 | ||
774 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
775 | BFD_ASSERT (s != NULL); | |
776 | ||
777 | /* The first four entries in .plt are reserved. */ | |
778 | if (s->_raw_size == 0) | |
779 | s->_raw_size = 4 * PLT_ENTRY_SIZE; | |
780 | ||
781 | /* The procedure linkage table has a maximum size. */ | |
782 | if (s->_raw_size >= 0x400000) | |
783 | { | |
784 | bfd_set_error (bfd_error_bad_value); | |
785 | return false; | |
786 | } | |
787 | ||
788 | /* If this symbol is not defined in a regular file, and we are | |
789 | not generating a shared library, then set the symbol to this | |
790 | location in the .plt. This is required to make function | |
791 | pointers compare as equal between the normal executable and | |
792 | the shared library. */ | |
793 | if (! info->shared | |
794 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
795 | { | |
796 | h->root.u.def.section = s; | |
797 | h->root.u.def.value = s->_raw_size; | |
798 | } | |
799 | ||
800 | h->plt.offset = s->_raw_size; | |
801 | ||
802 | /* Make room for this entry. */ | |
803 | s->_raw_size += PLT_ENTRY_SIZE; | |
804 | ||
805 | /* We also need to make an entry in the .rela.plt section. */ | |
806 | ||
807 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
808 | BFD_ASSERT (s != NULL); | |
809 | s->_raw_size += sizeof (Elf32_External_Rela); | |
810 | ||
811 | return true; | |
812 | } | |
813 | ||
814 | /* If this is a weak symbol, and there is a real definition, the | |
815 | processor independent code will have arranged for us to see the | |
816 | real definition first, and we can just use the same value. */ | |
817 | if (h->weakdef != NULL) | |
818 | { | |
819 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
820 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
821 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
822 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
823 | return true; | |
824 | } | |
825 | ||
826 | /* This is a reference to a symbol defined by a dynamic object which | |
827 | is not a function. */ | |
828 | ||
829 | /* If we are creating a shared library, we must presume that the | |
830 | only references to the symbol are via the global offset table. | |
831 | For such cases we need not do anything here; the relocations will | |
832 | be handled correctly by relocate_section. */ | |
833 | if (info->shared) | |
834 | return true; | |
835 | ||
836 | /* We must allocate the symbol in our .dynbss section, which will | |
837 | become part of the .bss section of the executable. There will be | |
838 | an entry for this symbol in the .dynsym section. The dynamic | |
839 | object will contain position independent code, so all references | |
840 | from the dynamic object to this symbol will go through the global | |
841 | offset table. The dynamic linker will use the .dynsym entry to | |
842 | determine the address it must put in the global offset table, so | |
843 | both the dynamic object and the regular object will refer to the | |
844 | same memory location for the variable. */ | |
845 | ||
846 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
847 | BFD_ASSERT (s != NULL); | |
848 | ||
849 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
850 | to copy the initial value out of the dynamic object and into the | |
851 | runtime process image. We need to remember the offset into the | |
852 | .rel.bss section we are going to use. */ | |
853 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
854 | { | |
855 | asection *srel; | |
856 | ||
857 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
858 | BFD_ASSERT (srel != NULL); | |
859 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
860 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
861 | } | |
862 | ||
863 | /* We need to figure out the alignment required for this symbol. I | |
864 | have no idea how ELF linkers handle this. */ | |
865 | power_of_two = bfd_log2 (h->size); | |
866 | if (power_of_two > 3) | |
867 | power_of_two = 3; | |
868 | ||
869 | /* Apply the required alignment. */ | |
870 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
871 | (bfd_size_type) (1 << power_of_two)); | |
872 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
873 | { | |
874 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
875 | return false; | |
876 | } | |
877 | ||
878 | /* Define the symbol as being at this point in the section. */ | |
879 | h->root.u.def.section = s; | |
880 | h->root.u.def.value = s->_raw_size; | |
881 | ||
882 | /* Increment the section size to make room for the symbol. */ | |
883 | s->_raw_size += h->size; | |
884 | ||
885 | return true; | |
886 | } | |
887 | ||
888 | /* Set the sizes of the dynamic sections. */ | |
889 | ||
890 | static boolean | |
891 | elf32_sparc_size_dynamic_sections (output_bfd, info) | |
892 | bfd *output_bfd; | |
893 | struct bfd_link_info *info; | |
894 | { | |
895 | bfd *dynobj; | |
896 | asection *s; | |
897 | boolean reltext; | |
898 | boolean relplt; | |
899 | ||
900 | dynobj = elf_hash_table (info)->dynobj; | |
901 | BFD_ASSERT (dynobj != NULL); | |
902 | ||
903 | if (elf_hash_table (info)->dynamic_sections_created) | |
904 | { | |
905 | /* Set the contents of the .interp section to the interpreter. */ | |
906 | if (! info->shared) | |
907 | { | |
908 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
909 | BFD_ASSERT (s != NULL); | |
910 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
911 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
912 | } | |
913 | ||
914 | /* Make space for the trailing nop in .plt. */ | |
915 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
916 | BFD_ASSERT (s != NULL); | |
917 | if (s->_raw_size > 0) | |
918 | s->_raw_size += 4; | |
919 | } | |
920 | else | |
921 | { | |
922 | /* We may have created entries in the .rela.got section. | |
923 | However, if we are not creating the dynamic sections, we will | |
924 | not actually use these entries. Reset the size of .rela.got, | |
925 | which will cause it to get stripped from the output file | |
926 | below. */ | |
927 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
928 | if (s != NULL) | |
929 | s->_raw_size = 0; | |
930 | } | |
931 | ||
932 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
933 | determined the sizes of the various dynamic sections. Allocate | |
934 | memory for them. */ | |
935 | reltext = false; | |
936 | relplt = false; | |
937 | for (s = dynobj->sections; s != NULL; s = s->next) | |
938 | { | |
939 | const char *name; | |
940 | boolean strip; | |
941 | ||
942 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
943 | continue; | |
944 | ||
945 | /* It's OK to base decisions on the section name, because none | |
946 | of the dynobj section names depend upon the input files. */ | |
947 | name = bfd_get_section_name (dynobj, s); | |
948 | ||
949 | strip = false; | |
950 | ||
951 | if (strncmp (name, ".rela", 5) == 0) | |
952 | { | |
953 | if (s->_raw_size == 0) | |
954 | { | |
955 | /* If we don't need this section, strip it from the | |
956 | output file. This is to handle .rela.bss and | |
957 | .rel.plt. We must create it in | |
958 | create_dynamic_sections, because it must be created | |
959 | before the linker maps input sections to output | |
960 | sections. The linker does that before | |
961 | adjust_dynamic_symbol is called, and it is that | |
962 | function which decides whether anything needs to go | |
963 | into these sections. */ | |
964 | strip = true; | |
965 | } | |
966 | else | |
967 | { | |
968 | const char *outname; | |
969 | asection *target; | |
970 | ||
971 | /* If this relocation section applies to a read only | |
972 | section, then we probably need a DT_TEXTREL entry. */ | |
973 | outname = bfd_get_section_name (output_bfd, | |
974 | s->output_section); | |
975 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
976 | if (target != NULL | |
977 | && (target->flags & SEC_READONLY) != 0 | |
978 | && (target->flags & SEC_ALLOC) != 0) | |
979 | reltext = true; | |
980 | ||
981 | if (strcmp (name, ".rela.plt") == 0) | |
982 | relplt = true; | |
983 | ||
984 | /* We use the reloc_count field as a counter if we need | |
985 | to copy relocs into the output file. */ | |
986 | s->reloc_count = 0; | |
987 | } | |
988 | } | |
989 | else if (strcmp (name, ".plt") != 0 | |
990 | && strcmp (name, ".got") != 0) | |
991 | { | |
992 | /* It's not one of our sections, so don't allocate space. */ | |
993 | continue; | |
994 | } | |
995 | ||
996 | if (strip) | |
997 | { | |
998 | _bfd_strip_section_from_output (s); | |
999 | continue; | |
1000 | } | |
1001 | ||
1002 | /* Allocate memory for the section contents. */ | |
1003 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); | |
1004 | if (s->contents == NULL && s->_raw_size != 0) | |
1005 | return false; | |
1006 | } | |
1007 | ||
1008 | if (elf_hash_table (info)->dynamic_sections_created) | |
1009 | { | |
1010 | /* Add some entries to the .dynamic section. We fill in the | |
1011 | values later, in elf32_sparc_finish_dynamic_sections, but we | |
1012 | must add the entries now so that we get the correct size for | |
1013 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1014 | dynamic linker and used by the debugger. */ | |
1015 | if (! info->shared) | |
1016 | { | |
1017 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
1018 | return false; | |
1019 | } | |
1020 | ||
1021 | if (relplt) | |
1022 | { | |
1023 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) | |
1024 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
1025 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
1026 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
1027 | return false; | |
1028 | } | |
1029 | ||
1030 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
1031 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
1032 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
1033 | sizeof (Elf32_External_Rela))) | |
1034 | return false; | |
1035 | ||
1036 | if (reltext) | |
1037 | { | |
1038 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
1039 | return false; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | /* If we are generating a shared library, we generate a section | |
1044 | symbol for each output section for which we might need to copy | |
1045 | relocs. These are local symbols, which means that they must come | |
1046 | first in the dynamic symbol table. That means we must increment | |
1047 | the dynamic symbol index of every other dynamic symbol. */ | |
1048 | if (info->shared) | |
1049 | { | |
1050 | int c; | |
1051 | ||
1052 | c = 0; | |
1053 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
1054 | { | |
1055 | if ((s->flags & SEC_LINKER_CREATED) != 0 | |
1056 | || (s->flags & SEC_ALLOC) == 0) | |
1057 | continue; | |
1058 | ||
1059 | elf_section_data (s)->dynindx = c + 1; | |
1060 | ||
1061 | /* These symbols will have no names, so we don't need to | |
1062 | fiddle with dynstr_index. */ | |
1063 | ||
1064 | ++c; | |
1065 | } | |
1066 | ||
1067 | elf_link_hash_traverse (elf_hash_table (info), | |
1068 | elf32_sparc_adjust_dynindx, | |
1069 | (PTR) &c); | |
1070 | elf_hash_table (info)->dynsymcount += c; | |
1071 | } | |
1072 | ||
1073 | return true; | |
1074 | } | |
1075 | ||
1076 | /* Increment the index of a dynamic symbol by a given amount. Called | |
1077 | via elf_link_hash_traverse. */ | |
1078 | ||
1079 | static boolean | |
1080 | elf32_sparc_adjust_dynindx (h, cparg) | |
1081 | struct elf_link_hash_entry *h; | |
1082 | PTR cparg; | |
1083 | { | |
1084 | int *cp = (int *) cparg; | |
1085 | ||
1086 | if (h->dynindx != -1) | |
1087 | h->dynindx += *cp; | |
1088 | return true; | |
1089 | } | |
1090 | ||
1091 | /* Relocate a SPARC ELF section. */ | |
1092 | ||
1093 | static boolean | |
1094 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, | |
1095 | contents, relocs, local_syms, local_sections) | |
1096 | bfd *output_bfd; | |
1097 | struct bfd_link_info *info; | |
1098 | bfd *input_bfd; | |
1099 | asection *input_section; | |
1100 | bfd_byte *contents; | |
1101 | Elf_Internal_Rela *relocs; | |
1102 | Elf_Internal_Sym *local_syms; | |
1103 | asection **local_sections; | |
1104 | { | |
1105 | bfd *dynobj; | |
1106 | Elf_Internal_Shdr *symtab_hdr; | |
1107 | struct elf_link_hash_entry **sym_hashes; | |
1108 | bfd_vma *local_got_offsets; | |
1109 | bfd_vma got_base; | |
1110 | asection *sgot; | |
1111 | asection *splt; | |
1112 | asection *sreloc; | |
1113 | Elf_Internal_Rela *rel; | |
1114 | Elf_Internal_Rela *relend; | |
1115 | ||
1116 | dynobj = elf_hash_table (info)->dynobj; | |
1117 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1118 | sym_hashes = elf_sym_hashes (input_bfd); | |
1119 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1120 | ||
1121 | if (elf_hash_table (info)->hgot == NULL) | |
1122 | got_base = 0; | |
1123 | else | |
1124 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1125 | ||
1126 | sgot = NULL; | |
1127 | splt = NULL; | |
1128 | sreloc = NULL; | |
1129 | ||
1130 | rel = relocs; | |
1131 | relend = relocs + input_section->reloc_count; | |
1132 | for (; rel < relend; rel++) | |
1133 | { | |
1134 | int r_type; | |
1135 | reloc_howto_type *howto; | |
1136 | unsigned long r_symndx; | |
1137 | struct elf_link_hash_entry *h; | |
1138 | Elf_Internal_Sym *sym; | |
1139 | asection *sec; | |
1140 | bfd_vma relocation; | |
1141 | bfd_reloc_status_type r; | |
1142 | ||
1143 | r_type = ELF32_R_TYPE (rel->r_info); | |
1144 | ||
1145 | if (r_type == R_SPARC_GNU_VTINHERIT | |
1146 | || r_type == R_SPARC_GNU_VTENTRY) | |
1147 | continue; | |
1148 | ||
60dac299 | 1149 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1150 | { |
1151 | bfd_set_error (bfd_error_bad_value); | |
1152 | return false; | |
1153 | } | |
1154 | howto = _bfd_sparc_elf_howto_table + r_type; | |
1155 | ||
1156 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1157 | ||
1158 | if (info->relocateable) | |
1159 | { | |
1160 | /* This is a relocateable link. We don't have to change | |
1161 | anything, unless the reloc is against a section symbol, | |
1162 | in which case we have to adjust according to where the | |
1163 | section symbol winds up in the output section. */ | |
1164 | if (r_symndx < symtab_hdr->sh_info) | |
1165 | { | |
1166 | sym = local_syms + r_symndx; | |
1167 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1168 | { | |
1169 | sec = local_sections[r_symndx]; | |
1170 | rel->r_addend += sec->output_offset + sym->st_value; | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | continue; | |
1175 | } | |
1176 | ||
1177 | /* This is a final link. */ | |
1178 | h = NULL; | |
1179 | sym = NULL; | |
1180 | sec = NULL; | |
1181 | if (r_symndx < symtab_hdr->sh_info) | |
1182 | { | |
1183 | sym = local_syms + r_symndx; | |
1184 | sec = local_sections[r_symndx]; | |
1185 | relocation = (sec->output_section->vma | |
1186 | + sec->output_offset | |
1187 | + sym->st_value); | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1192 | while (h->root.type == bfd_link_hash_indirect | |
1193 | || h->root.type == bfd_link_hash_warning) | |
1194 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1195 | if (h->root.type == bfd_link_hash_defined | |
1196 | || h->root.type == bfd_link_hash_defweak) | |
1197 | { | |
1198 | sec = h->root.u.def.section; | |
1199 | if ((r_type == R_SPARC_WPLT30 | |
1200 | && h->plt.offset != (bfd_vma) -1) | |
1201 | || ((r_type == R_SPARC_GOT10 | |
1202 | || r_type == R_SPARC_GOT13 | |
1203 | || r_type == R_SPARC_GOT22) | |
1204 | && elf_hash_table (info)->dynamic_sections_created | |
1205 | && (! info->shared | |
1206 | || (! info->symbolic && h->dynindx != -1) | |
1207 | || (h->elf_link_hash_flags | |
1208 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1209 | || (info->shared | |
1210 | && ((! info->symbolic && h->dynindx != -1) | |
1211 | || (h->elf_link_hash_flags | |
1212 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1213 | && (r_type == R_SPARC_8 | |
1214 | || r_type == R_SPARC_16 | |
1215 | || r_type == R_SPARC_32 | |
1216 | || r_type == R_SPARC_DISP8 | |
1217 | || r_type == R_SPARC_DISP16 | |
1218 | || r_type == R_SPARC_DISP32 | |
1219 | || r_type == R_SPARC_WDISP30 | |
1220 | || r_type == R_SPARC_WDISP22 | |
1221 | || r_type == R_SPARC_WDISP19 | |
1222 | || r_type == R_SPARC_WDISP16 | |
1223 | || r_type == R_SPARC_HI22 | |
1224 | || r_type == R_SPARC_22 | |
1225 | || r_type == R_SPARC_13 | |
1226 | || r_type == R_SPARC_LO10 | |
1227 | || r_type == R_SPARC_UA32 | |
1228 | || ((r_type == R_SPARC_PC10 | |
1229 | || r_type == R_SPARC_PC22) | |
1230 | && strcmp (h->root.root.string, | |
1231 | "_GLOBAL_OFFSET_TABLE_") != 0)))) | |
1232 | { | |
1233 | /* In these cases, we don't need the relocation | |
1234 | value. We check specially because in some | |
1235 | obscure cases sec->output_section will be NULL. */ | |
1236 | relocation = 0; | |
1237 | } | |
1238 | else | |
1239 | relocation = (h->root.u.def.value | |
1240 | + sec->output_section->vma | |
1241 | + sec->output_offset); | |
1242 | } | |
1243 | else if (h->root.type == bfd_link_hash_undefweak) | |
1244 | relocation = 0; | |
1245 | else if (info->shared && !info->symbolic && !info->no_undefined) | |
1246 | relocation = 0; | |
1247 | else | |
1248 | { | |
1249 | if (! ((*info->callbacks->undefined_symbol) | |
1250 | (info, h->root.root.string, input_bfd, | |
1251 | input_section, rel->r_offset))) | |
1252 | return false; | |
1253 | relocation = 0; | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | switch (r_type) | |
1258 | { | |
1259 | case R_SPARC_GOT10: | |
1260 | case R_SPARC_GOT13: | |
1261 | case R_SPARC_GOT22: | |
1262 | /* Relocation is to the entry for this symbol in the global | |
1263 | offset table. */ | |
1264 | if (sgot == NULL) | |
1265 | { | |
1266 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1267 | BFD_ASSERT (sgot != NULL); | |
1268 | } | |
1269 | ||
1270 | if (h != NULL) | |
1271 | { | |
1272 | bfd_vma off; | |
1273 | ||
1274 | off = h->got.offset; | |
1275 | BFD_ASSERT (off != (bfd_vma) -1); | |
1276 | ||
1277 | if (! elf_hash_table (info)->dynamic_sections_created | |
1278 | || (info->shared | |
1279 | && (info->symbolic || h->dynindx == -1) | |
1280 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
1281 | { | |
1282 | /* This is actually a static link, or it is a | |
1283 | -Bsymbolic link and the symbol is defined | |
1284 | locally, or the symbol was forced to be local | |
1285 | because of a version file. We must initialize | |
1286 | this entry in the global offset table. Since the | |
1287 | offset must always be a multiple of 4, we use the | |
1288 | least significant bit to record whether we have | |
1289 | initialized it already. | |
1290 | ||
1291 | When doing a dynamic link, we create a .rela.got | |
1292 | relocation entry to initialize the value. This | |
1293 | is done in the finish_dynamic_symbol routine. */ | |
1294 | if ((off & 1) != 0) | |
1295 | off &= ~1; | |
1296 | else | |
1297 | { | |
1298 | bfd_put_32 (output_bfd, relocation, | |
1299 | sgot->contents + off); | |
1300 | h->got.offset |= 1; | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | relocation = sgot->output_offset + off - got_base; | |
1305 | } | |
1306 | else | |
1307 | { | |
1308 | bfd_vma off; | |
1309 | ||
1310 | BFD_ASSERT (local_got_offsets != NULL | |
1311 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1312 | ||
1313 | off = local_got_offsets[r_symndx]; | |
1314 | ||
1315 | /* The offset must always be a multiple of 4. We use | |
1316 | the least significant bit to record whether we have | |
1317 | already processed this entry. */ | |
1318 | if ((off & 1) != 0) | |
1319 | off &= ~1; | |
1320 | else | |
1321 | { | |
1322 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1323 | ||
1324 | if (info->shared) | |
1325 | { | |
1326 | asection *srelgot; | |
1327 | Elf_Internal_Rela outrel; | |
1328 | ||
1329 | /* We need to generate a R_SPARC_RELATIVE reloc | |
1330 | for the dynamic linker. */ | |
1331 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1332 | BFD_ASSERT (srelgot != NULL); | |
1333 | ||
1334 | outrel.r_offset = (sgot->output_section->vma | |
1335 | + sgot->output_offset | |
1336 | + off); | |
1337 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1338 | outrel.r_addend = 0; | |
1339 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1340 | (((Elf32_External_Rela *) | |
1341 | srelgot->contents) | |
1342 | + srelgot->reloc_count)); | |
1343 | ++srelgot->reloc_count; | |
1344 | } | |
1345 | ||
1346 | local_got_offsets[r_symndx] |= 1; | |
1347 | } | |
1348 | ||
1349 | relocation = sgot->output_offset + off - got_base; | |
1350 | } | |
1351 | ||
1352 | break; | |
1353 | ||
1354 | case R_SPARC_WPLT30: | |
1355 | /* Relocation is to the entry for this symbol in the | |
1356 | procedure linkage table. */ | |
1357 | ||
1358 | /* The Solaris native assembler will generate a WPLT30 reloc | |
1359 | for a local symbol if you assemble a call from one | |
1360 | section to another when using -K pic. We treat it as | |
1361 | WDISP30. */ | |
1362 | if (h == NULL) | |
1363 | break; | |
1364 | ||
1365 | if (h->plt.offset == (bfd_vma) -1) | |
1366 | { | |
1367 | /* We didn't make a PLT entry for this symbol. This | |
1368 | happens when statically linking PIC code, or when | |
1369 | using -Bsymbolic. */ | |
1370 | break; | |
1371 | } | |
1372 | ||
1373 | if (splt == NULL) | |
1374 | { | |
1375 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1376 | BFD_ASSERT (splt != NULL); | |
1377 | } | |
1378 | ||
1379 | relocation = (splt->output_section->vma | |
1380 | + splt->output_offset | |
1381 | + h->plt.offset); | |
1382 | break; | |
1383 | ||
1384 | case R_SPARC_PC10: | |
1385 | case R_SPARC_PC22: | |
1386 | if (h != NULL | |
1387 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1388 | break; | |
1389 | /* Fall through. */ | |
1390 | case R_SPARC_DISP8: | |
1391 | case R_SPARC_DISP16: | |
1392 | case R_SPARC_DISP32: | |
1393 | case R_SPARC_WDISP30: | |
1394 | case R_SPARC_WDISP22: | |
1395 | case R_SPARC_WDISP19: | |
1396 | case R_SPARC_WDISP16: | |
1397 | if (h == NULL | |
1398 | || (info->symbolic | |
1399 | && (h->elf_link_hash_flags | |
1400 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
1401 | break; | |
1402 | /* Fall through. */ | |
1403 | case R_SPARC_8: | |
1404 | case R_SPARC_16: | |
1405 | case R_SPARC_32: | |
1406 | case R_SPARC_HI22: | |
1407 | case R_SPARC_22: | |
1408 | case R_SPARC_13: | |
1409 | case R_SPARC_LO10: | |
1410 | case R_SPARC_UA32: | |
1411 | if (info->shared) | |
1412 | { | |
1413 | Elf_Internal_Rela outrel; | |
1414 | boolean skip; | |
1415 | ||
1416 | /* When generating a shared object, these relocations | |
1417 | are copied into the output file to be resolved at run | |
1418 | time. */ | |
1419 | ||
1420 | if (sreloc == NULL) | |
1421 | { | |
1422 | const char *name; | |
1423 | ||
1424 | name = (bfd_elf_string_from_elf_section | |
1425 | (input_bfd, | |
1426 | elf_elfheader (input_bfd)->e_shstrndx, | |
1427 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1428 | if (name == NULL) | |
1429 | return false; | |
1430 | ||
1431 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1432 | && strcmp (bfd_get_section_name (input_bfd, | |
1433 | input_section), | |
1434 | name + 5) == 0); | |
1435 | ||
1436 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1437 | BFD_ASSERT (sreloc != NULL); | |
1438 | } | |
1439 | ||
1440 | skip = false; | |
1441 | ||
1442 | if (elf_section_data (input_section)->stab_info == NULL) | |
1443 | outrel.r_offset = rel->r_offset; | |
1444 | else | |
1445 | { | |
1446 | bfd_vma off; | |
1447 | ||
1448 | off = (_bfd_stab_section_offset | |
1449 | (output_bfd, &elf_hash_table (info)->stab_info, | |
1450 | input_section, | |
1451 | &elf_section_data (input_section)->stab_info, | |
1452 | rel->r_offset)); | |
1453 | if (off == (bfd_vma) -1) | |
1454 | skip = true; | |
1455 | outrel.r_offset = off; | |
1456 | } | |
1457 | ||
1458 | outrel.r_offset += (input_section->output_section->vma | |
1459 | + input_section->output_offset); | |
1460 | ||
1461 | if (skip) | |
1462 | memset (&outrel, 0, sizeof outrel); | |
1463 | /* h->dynindx may be -1 if the symbol was marked to | |
1464 | become local. */ | |
1465 | else if (h != NULL | |
1466 | && ((! info->symbolic && h->dynindx != -1) | |
1467 | || (h->elf_link_hash_flags | |
1468 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1469 | { | |
1470 | BFD_ASSERT (h->dynindx != -1); | |
1471 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1472 | outrel.r_addend = rel->r_addend; | |
1473 | } | |
1474 | else | |
1475 | { | |
1476 | if (r_type == R_SPARC_32) | |
1477 | { | |
1478 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1479 | outrel.r_addend = relocation + rel->r_addend; | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | long indx; | |
1484 | ||
1485 | if (h == NULL) | |
1486 | sec = local_sections[r_symndx]; | |
1487 | else | |
1488 | { | |
1489 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1490 | || (h->root.type | |
1491 | == bfd_link_hash_defweak)); | |
1492 | sec = h->root.u.def.section; | |
1493 | } | |
1494 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1495 | indx = 0; | |
1496 | else if (sec == NULL || sec->owner == NULL) | |
1497 | { | |
1498 | bfd_set_error (bfd_error_bad_value); | |
1499 | return false; | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | asection *osec; | |
1504 | ||
1505 | osec = sec->output_section; | |
1506 | indx = elf_section_data (osec)->dynindx; | |
1507 | ||
1508 | /* FIXME: we really should be able to link non-pic | |
1509 | shared libraries. */ | |
1510 | if (indx == 0) | |
1511 | { | |
1512 | BFD_FAIL (); | |
1513 | (*_bfd_error_handler) | |
1514 | (_("%s: probably compiled without -fPIC?"), | |
1515 | bfd_get_filename (input_bfd)); | |
1516 | bfd_set_error (bfd_error_bad_value); | |
1517 | return false; | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1522 | ||
1523 | /* For non-RELATIVE dynamic relocations, we keep the | |
1524 | same symbol, and so generally the same addend. But | |
1525 | we do need to adjust those relocations referencing | |
1526 | sections. */ | |
1527 | outrel.r_addend = rel->r_addend; | |
1528 | if (r_symndx < symtab_hdr->sh_info | |
1529 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1530 | outrel.r_addend += sec->output_offset+sym->st_value; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1535 | (((Elf32_External_Rela *) | |
1536 | sreloc->contents) | |
1537 | + sreloc->reloc_count)); | |
1538 | ++sreloc->reloc_count; | |
1539 | ||
1540 | /* This reloc will be computed at runtime, so there's no | |
1541 | need to do anything now, unless this is a RELATIVE | |
1542 | reloc in an unallocated section. */ | |
1543 | if (skip | |
1544 | || (input_section->flags & SEC_ALLOC) != 0 | |
1545 | || ELF32_R_TYPE (outrel.r_info) != R_SPARC_RELATIVE) | |
1546 | continue; | |
1547 | } | |
1548 | break; | |
1549 | ||
1550 | default: | |
1551 | break; | |
1552 | } | |
1553 | ||
1554 | if (r_type == R_SPARC_WDISP16) | |
1555 | { | |
1556 | bfd_vma x; | |
1557 | ||
1558 | relocation += rel->r_addend; | |
1559 | relocation -= (input_section->output_section->vma | |
1560 | + input_section->output_offset); | |
1561 | relocation -= rel->r_offset; | |
1562 | ||
1563 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1564 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
1565 | | ((relocation >> 2) & 0x3fff)); | |
1566 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1567 | ||
1568 | if ((bfd_signed_vma) relocation < - 0x40000 | |
1569 | || (bfd_signed_vma) relocation > 0x3ffff) | |
1570 | r = bfd_reloc_overflow; | |
1571 | else | |
1572 | r = bfd_reloc_ok; | |
1573 | } | |
1574 | else if (r_type == R_SPARC_REV32) | |
1575 | { | |
1576 | bfd_vma x; | |
1577 | ||
1578 | relocation = relocation + rel->r_addend; | |
1579 | ||
1580 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1581 | x = x + relocation; | |
1582 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); | |
1583 | r = bfd_reloc_ok; | |
1584 | } | |
1585 | else | |
1586 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1587 | contents, rel->r_offset, | |
1588 | relocation, rel->r_addend); | |
1589 | ||
1590 | ||
1591 | if (r != bfd_reloc_ok) | |
1592 | { | |
1593 | switch (r) | |
1594 | { | |
1595 | default: | |
1596 | case bfd_reloc_outofrange: | |
1597 | abort (); | |
1598 | case bfd_reloc_overflow: | |
1599 | { | |
1600 | const char *name; | |
1601 | ||
1602 | if (h != NULL) | |
1603 | name = h->root.root.string; | |
1604 | else | |
1605 | { | |
1606 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1607 | symtab_hdr->sh_link, | |
1608 | sym->st_name); | |
1609 | if (name == NULL) | |
1610 | return false; | |
1611 | if (*name == '\0') | |
1612 | name = bfd_section_name (input_bfd, sec); | |
1613 | } | |
1614 | if (! ((*info->callbacks->reloc_overflow) | |
1615 | (info, name, howto->name, (bfd_vma) 0, | |
1616 | input_bfd, input_section, rel->r_offset))) | |
1617 | return false; | |
1618 | } | |
1619 | break; | |
1620 | } | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | return true; | |
1625 | } | |
1626 | ||
1627 | /* Finish up dynamic symbol handling. We set the contents of various | |
1628 | dynamic sections here. */ | |
1629 | ||
1630 | static boolean | |
1631 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) | |
1632 | bfd *output_bfd; | |
1633 | struct bfd_link_info *info; | |
1634 | struct elf_link_hash_entry *h; | |
1635 | Elf_Internal_Sym *sym; | |
1636 | { | |
1637 | bfd *dynobj; | |
1638 | ||
1639 | dynobj = elf_hash_table (info)->dynobj; | |
1640 | ||
1641 | if (h->plt.offset != (bfd_vma) -1) | |
1642 | { | |
1643 | asection *splt; | |
1644 | asection *srela; | |
1645 | Elf_Internal_Rela rela; | |
1646 | ||
1647 | /* This symbol has an entry in the procedure linkage table. Set | |
1648 | it up. */ | |
1649 | ||
1650 | BFD_ASSERT (h->dynindx != -1); | |
1651 | ||
1652 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1653 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1654 | BFD_ASSERT (splt != NULL && srela != NULL); | |
1655 | ||
1656 | /* Fill in the entry in the procedure linkage table. */ | |
1657 | bfd_put_32 (output_bfd, | |
1658 | PLT_ENTRY_WORD0 + h->plt.offset, | |
1659 | splt->contents + h->plt.offset); | |
1660 | bfd_put_32 (output_bfd, | |
1661 | (PLT_ENTRY_WORD1 | |
1662 | + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)), | |
1663 | splt->contents + h->plt.offset + 4); | |
1664 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, | |
1665 | splt->contents + h->plt.offset + 8); | |
1666 | ||
1667 | /* Fill in the entry in the .rela.plt section. */ | |
1668 | rela.r_offset = (splt->output_section->vma | |
1669 | + splt->output_offset | |
1670 | + h->plt.offset); | |
1671 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); | |
1672 | rela.r_addend = 0; | |
1673 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1674 | ((Elf32_External_Rela *) srela->contents | |
1675 | + h->plt.offset / PLT_ENTRY_SIZE - 4)); | |
1676 | ||
1677 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1678 | { | |
1679 | /* Mark the symbol as undefined, rather than as defined in | |
1680 | the .plt section. Leave the value alone. */ | |
1681 | sym->st_shndx = SHN_UNDEF; | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | if (h->got.offset != (bfd_vma) -1) | |
1686 | { | |
1687 | asection *sgot; | |
1688 | asection *srela; | |
1689 | Elf_Internal_Rela rela; | |
1690 | ||
1691 | /* This symbol has an entry in the global offset table. Set it | |
1692 | up. */ | |
1693 | ||
1694 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1695 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1696 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1697 | ||
1698 | rela.r_offset = (sgot->output_section->vma | |
1699 | + sgot->output_offset | |
1700 | + (h->got.offset &~ 1)); | |
1701 | ||
1702 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1703 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1704 | the symbol was forced to be local because of a version file. | |
1705 | The entry in the global offset table will already have been | |
1706 | initialized in the relocate_section function. */ | |
1707 | if (info->shared | |
1708 | && (info->symbolic || h->dynindx == -1) | |
1709 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
1710 | rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1711 | else | |
1712 | { | |
1713 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
1714 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); | |
1715 | } | |
1716 | ||
1717 | rela.r_addend = 0; | |
1718 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1719 | ((Elf32_External_Rela *) srela->contents | |
1720 | + srela->reloc_count)); | |
1721 | ++srela->reloc_count; | |
1722 | } | |
1723 | ||
1724 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1725 | { | |
1726 | asection *s; | |
1727 | Elf_Internal_Rela rela; | |
1728 | ||
1729 | /* This symbols needs a copy reloc. Set it up. */ | |
1730 | ||
1731 | BFD_ASSERT (h->dynindx != -1); | |
1732 | ||
1733 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1734 | ".rela.bss"); | |
1735 | BFD_ASSERT (s != NULL); | |
1736 | ||
1737 | rela.r_offset = (h->root.u.def.value | |
1738 | + h->root.u.def.section->output_section->vma | |
1739 | + h->root.u.def.section->output_offset); | |
1740 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); | |
1741 | rela.r_addend = 0; | |
1742 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1743 | ((Elf32_External_Rela *) s->contents | |
1744 | + s->reloc_count)); | |
1745 | ++s->reloc_count; | |
1746 | } | |
1747 | ||
1748 | /* Mark some specially defined symbols as absolute. */ | |
1749 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1750 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
1751 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
1752 | sym->st_shndx = SHN_ABS; | |
1753 | ||
1754 | return true; | |
1755 | } | |
1756 | ||
1757 | /* Finish up the dynamic sections. */ | |
1758 | ||
1759 | static boolean | |
1760 | elf32_sparc_finish_dynamic_sections (output_bfd, info) | |
1761 | bfd *output_bfd; | |
1762 | struct bfd_link_info *info; | |
1763 | { | |
1764 | bfd *dynobj; | |
1765 | asection *sdyn; | |
1766 | asection *sgot; | |
1767 | ||
1768 | dynobj = elf_hash_table (info)->dynobj; | |
1769 | ||
1770 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1771 | ||
1772 | if (elf_hash_table (info)->dynamic_sections_created) | |
1773 | { | |
1774 | asection *splt; | |
1775 | Elf32_External_Dyn *dyncon, *dynconend; | |
1776 | ||
1777 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1778 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1779 | ||
1780 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1781 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1782 | for (; dyncon < dynconend; dyncon++) | |
1783 | { | |
1784 | Elf_Internal_Dyn dyn; | |
1785 | const char *name; | |
1786 | boolean size; | |
1787 | ||
1788 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1789 | ||
1790 | switch (dyn.d_tag) | |
1791 | { | |
1792 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
1793 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
1794 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
1795 | default: name = NULL; size = false; break; | |
1796 | } | |
1797 | ||
1798 | if (name != NULL) | |
1799 | { | |
1800 | asection *s; | |
1801 | ||
1802 | s = bfd_get_section_by_name (output_bfd, name); | |
1803 | if (s == NULL) | |
1804 | dyn.d_un.d_val = 0; | |
1805 | else | |
1806 | { | |
1807 | if (! size) | |
1808 | dyn.d_un.d_ptr = s->vma; | |
1809 | else | |
1810 | { | |
1811 | if (s->_cooked_size != 0) | |
1812 | dyn.d_un.d_val = s->_cooked_size; | |
1813 | else | |
1814 | dyn.d_un.d_val = s->_raw_size; | |
1815 | } | |
1816 | } | |
1817 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | /* Clear the first four entries in the procedure linkage table, | |
1822 | and put a nop in the last four bytes. */ | |
1823 | if (splt->_raw_size > 0) | |
1824 | { | |
1825 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); | |
1826 | bfd_put_32 (output_bfd, SPARC_NOP, | |
1827 | splt->contents + splt->_raw_size - 4); | |
1828 | } | |
1829 | ||
1830 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1831 | PLT_ENTRY_SIZE; | |
1832 | } | |
1833 | ||
1834 | /* Set the first entry in the global offset table to the address of | |
1835 | the dynamic section. */ | |
1836 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1837 | BFD_ASSERT (sgot != NULL); | |
1838 | if (sgot->_raw_size > 0) | |
1839 | { | |
1840 | if (sdyn == NULL) | |
1841 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1842 | else | |
1843 | bfd_put_32 (output_bfd, | |
1844 | sdyn->output_section->vma + sdyn->output_offset, | |
1845 | sgot->contents); | |
1846 | } | |
1847 | ||
1848 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1849 | ||
1850 | if (info->shared) | |
1851 | { | |
1852 | asection *sdynsym; | |
1853 | asection *s; | |
1854 | Elf_Internal_Sym sym; | |
1855 | int c; | |
1856 | ||
1857 | /* Set up the section symbols for the output sections. */ | |
1858 | ||
1859 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
1860 | BFD_ASSERT (sdynsym != NULL); | |
1861 | ||
1862 | sym.st_size = 0; | |
1863 | sym.st_name = 0; | |
1864 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
1865 | sym.st_other = 0; | |
1866 | ||
1867 | c = 0; | |
1868 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
1869 | { | |
1870 | int indx; | |
1871 | ||
1872 | if (elf_section_data (s)->dynindx == 0) | |
1873 | continue; | |
1874 | ||
1875 | sym.st_value = s->vma; | |
1876 | ||
1877 | indx = elf_section_data (s)->this_idx; | |
1878 | BFD_ASSERT (indx > 0); | |
1879 | sym.st_shndx = indx; | |
1880 | ||
1881 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
1882 | (PTR) (((Elf32_External_Sym *) | |
1883 | sdynsym->contents) | |
1884 | + elf_section_data (s)->dynindx)); | |
1885 | ||
1886 | ++c; | |
1887 | } | |
1888 | ||
1889 | /* Set the sh_info field of the output .dynsym section to the | |
1890 | index of the first global symbol. */ | |
1891 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = c + 1; | |
1892 | } | |
1893 | ||
1894 | return true; | |
1895 | } | |
1896 | \f | |
1897 | /* Functions for dealing with the e_flags field. | |
1898 | ||
1899 | We don't define set_private_flags or copy_private_bfd_data because | |
1900 | the only currently defined values are based on the bfd mach number, | |
1901 | so we use the latter instead and defer setting e_flags until the | |
1902 | file is written out. */ | |
1903 | ||
1904 | /* Merge backend specific data from an object file to the output | |
1905 | object file when linking. */ | |
1906 | ||
1907 | static boolean | |
1908 | elf32_sparc_merge_private_bfd_data (ibfd, obfd) | |
1909 | bfd *ibfd; | |
1910 | bfd *obfd; | |
1911 | { | |
1912 | boolean error; | |
1913 | static int previous_ibfd_e_flags = -1; | |
1914 | ||
1915 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1916 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1917 | return true; | |
1918 | ||
1919 | error = false; | |
1920 | ||
1921 | #if 0 | |
1922 | /* ??? The native linker doesn't do this so we can't (otherwise gcc would | |
1923 | have to know which linker is being used). Instead, the native linker | |
1924 | bumps up the architecture level when it has to. However, I still think | |
1925 | warnings like these are good, so it would be nice to have them turned on | |
1926 | by some option. */ | |
1927 | ||
1928 | /* If the output machine is normal sparc, we can't allow v9 input files. */ | |
1929 | if (bfd_get_mach (obfd) == bfd_mach_sparc | |
1930 | && (bfd_get_mach (ibfd) == bfd_mach_sparc_v8plus | |
1931 | || bfd_get_mach (ibfd) == bfd_mach_sparc_v8plusa)) | |
1932 | { | |
1933 | error = true; | |
1934 | (*_bfd_error_handler) | |
1935 | (_("%s: compiled for a v8plus system and target is v8"), | |
1936 | bfd_get_filename (ibfd)); | |
1937 | } | |
1938 | /* If the output machine is v9, we can't allow v9+vis input files. */ | |
1939 | if (bfd_get_mach (obfd) == bfd_mach_sparc_v8plus | |
1940 | && bfd_get_mach (ibfd) == bfd_mach_sparc_v8plusa) | |
1941 | { | |
1942 | error = true; | |
1943 | (*_bfd_error_handler) | |
1944 | (_("%s: compiled for a v8plusa system and target is v8plus"), | |
1945 | bfd_get_filename (ibfd)); | |
1946 | } | |
1947 | #else | |
1948 | if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9) | |
1949 | { | |
1950 | error = true; | |
1951 | (*_bfd_error_handler) | |
1952 | (_("%s: compiled for a 64 bit system and target is 32 bit"), | |
1953 | bfd_get_filename (ibfd)); | |
1954 | } | |
1955 | else if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
1956 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); | |
1957 | #endif | |
1958 | ||
1959 | if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) | |
1960 | != previous_ibfd_e_flags) | |
1961 | && previous_ibfd_e_flags >= 0) | |
1962 | { | |
1963 | (*_bfd_error_handler) | |
1964 | (_("%s: linking little endian files with big endian files"), | |
1965 | bfd_get_filename (ibfd)); | |
1966 | error = true; | |
1967 | } | |
1968 | previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; | |
1969 | ||
1970 | if (error) | |
1971 | { | |
1972 | bfd_set_error (bfd_error_bad_value); | |
1973 | return false; | |
1974 | } | |
1975 | ||
1976 | return true; | |
1977 | } | |
1978 | \f | |
1979 | /* Set the right machine number. */ | |
1980 | ||
1981 | static boolean | |
1982 | elf32_sparc_object_p (abfd) | |
1983 | bfd *abfd; | |
1984 | { | |
1985 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) | |
1986 | { | |
1987 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
1988 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
1989 | bfd_mach_sparc_v8plusa); | |
1990 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) | |
1991 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
1992 | bfd_mach_sparc_v8plus); | |
1993 | else | |
1994 | return false; | |
1995 | } | |
1996 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) | |
1997 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
1998 | bfd_mach_sparc_sparclite_le); | |
1999 | else | |
2000 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); | |
2001 | } | |
2002 | ||
2003 | /* The final processing done just before writing out the object file. | |
2004 | We need to set the e_machine field appropriately. */ | |
2005 | ||
2006 | static void | |
2007 | elf32_sparc_final_write_processing (abfd, linker) | |
2008 | bfd *abfd; | |
2009 | boolean linker; | |
2010 | { | |
2011 | switch (bfd_get_mach (abfd)) | |
2012 | { | |
2013 | case bfd_mach_sparc : | |
2014 | break; /* nothing to do */ | |
2015 | case bfd_mach_sparc_v8plus : | |
2016 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2017 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2018 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; | |
2019 | break; | |
2020 | case bfd_mach_sparc_v8plusa : | |
2021 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2022 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2023 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; | |
2024 | break; | |
2025 | case bfd_mach_sparc_sparclite_le : | |
2026 | elf_elfheader (abfd)->e_machine = EM_SPARC; | |
2027 | elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; | |
2028 | break; | |
2029 | default : | |
2030 | abort (); | |
2031 | break; | |
2032 | } | |
2033 | } | |
2034 | \f | |
2035 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec | |
2036 | #define TARGET_BIG_NAME "elf32-sparc" | |
2037 | #define ELF_ARCH bfd_arch_sparc | |
2038 | #define ELF_MACHINE_CODE EM_SPARC | |
2039 | #define ELF_MACHINE_ALT1 EM_SPARC32PLUS | |
2040 | #define ELF_MAXPAGESIZE 0x10000 | |
2041 | ||
2042 | #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup | |
2043 | #define elf_info_to_howto elf32_sparc_info_to_howto | |
2044 | #define elf_backend_create_dynamic_sections \ | |
2045 | _bfd_elf_create_dynamic_sections | |
2046 | #define elf_backend_check_relocs elf32_sparc_check_relocs | |
2047 | #define elf_backend_adjust_dynamic_symbol \ | |
2048 | elf32_sparc_adjust_dynamic_symbol | |
2049 | #define elf_backend_size_dynamic_sections \ | |
2050 | elf32_sparc_size_dynamic_sections | |
2051 | #define elf_backend_relocate_section elf32_sparc_relocate_section | |
2052 | #define elf_backend_finish_dynamic_symbol \ | |
2053 | elf32_sparc_finish_dynamic_symbol | |
2054 | #define elf_backend_finish_dynamic_sections \ | |
2055 | elf32_sparc_finish_dynamic_sections | |
2056 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2057 | elf32_sparc_merge_private_bfd_data | |
2058 | #define elf_backend_object_p elf32_sparc_object_p | |
2059 | #define elf_backend_final_write_processing \ | |
2060 | elf32_sparc_final_write_processing | |
2061 | #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook | |
2062 | #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook | |
2063 | ||
2064 | #define elf_backend_can_gc_sections 1 | |
2065 | #define elf_backend_want_got_plt 0 | |
2066 | #define elf_backend_plt_readonly 0 | |
2067 | #define elf_backend_want_plt_sym 1 | |
2068 | #define elf_backend_got_header_size 4 | |
2069 | #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE) | |
2070 | ||
2071 | #include "elf32-target.h" |