Commit | Line | Data |
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252b5132 | 1 | /* SPARC-specific support for 32-bit ELF |
7898deda | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
37fb6db1 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/sparc.h" | |
f7775d95 | 27 | #include "opcode/sparc.h" |
252b5132 RH |
28 | |
29 | static reloc_howto_type *elf32_sparc_reloc_type_lookup | |
30 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
31 | static void elf32_sparc_info_to_howto | |
32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
33 | static boolean elf32_sparc_check_relocs | |
34 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
35 | const Elf_Internal_Rela *)); | |
36 | static boolean elf32_sparc_adjust_dynamic_symbol | |
37 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
252b5132 RH |
38 | static boolean elf32_sparc_size_dynamic_sections |
39 | PARAMS ((bfd *, struct bfd_link_info *)); | |
f7775d95 JJ |
40 | static boolean elf32_sparc_relax_section |
41 | PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); | |
252b5132 RH |
42 | static boolean elf32_sparc_relocate_section |
43 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
44 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
45 | static boolean elf32_sparc_finish_dynamic_symbol | |
46 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
47 | Elf_Internal_Sym *)); | |
48 | static boolean elf32_sparc_finish_dynamic_sections | |
49 | PARAMS ((bfd *, struct bfd_link_info *)); | |
50 | static boolean elf32_sparc_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
51 | static boolean elf32_sparc_object_p | |
52 | PARAMS ((bfd *)); | |
53 | static void elf32_sparc_final_write_processing | |
54 | PARAMS ((bfd *, boolean)); | |
db6751f2 JJ |
55 | static enum elf_reloc_type_class elf32_sparc_reloc_type_class |
56 | PARAMS ((int)); | |
252b5132 RH |
57 | \f |
58 | /* The relocation "howto" table. */ | |
59 | ||
60 | static bfd_reloc_status_type sparc_elf_notsupported_reloc | |
61 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
62 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
63 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
64 | ||
65 | reloc_howto_type _bfd_sparc_elf_howto_table[] = | |
66 | { | |
67 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
68 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), | |
69 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), | |
70 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), | |
71 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), | |
72 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), | |
73 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), | |
74 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), | |
75 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), | |
76 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), | |
77 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), | |
78 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), | |
79 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), | |
80 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), | |
81 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), | |
82 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), | |
83 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), | |
84 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), | |
85 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), | |
86 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), | |
87 | 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), | |
88 | 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), | |
89 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), | |
9fc54e19 | 90 | HOWTO(R_SPARC_UA32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true), |
252b5132 RH |
91 | HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), |
92 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), | |
93 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), | |
94 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), | |
95 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), | |
96 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), | |
97 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), | |
98 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), | |
99 | /* These are for sparc64 in a 64 bit environment. | |
100 | Values need to be here because the table is indexed by reloc number. */ | |
101 | HOWTO(R_SPARC_64, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", false,0,0x00000000,true), | |
102 | HOWTO(R_SPARC_OLO10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", false,0,0x00000000,true), | |
103 | HOWTO(R_SPARC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", false,0,0x00000000,true), | |
104 | HOWTO(R_SPARC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", false,0,0x00000000,true), | |
105 | HOWTO(R_SPARC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", false,0,0x00000000,true), | |
106 | 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), | |
107 | 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), | |
108 | 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), | |
109 | /* End sparc64 in 64 bit environment values. | |
110 | The following are for sparc64 in a 32 bit environment. */ | |
111 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), | |
112 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), | |
113 | 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), | |
114 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), | |
115 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), | |
116 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,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_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
124 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
20278fa3 | 125 | HOWTO(R_SPARC_UA64, 0,0, 0,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", false,0,0x00000000,true), |
0f2712ed NC |
126 | HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true), |
127 | HOWTO(R_SPARC_REV32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", false,0,0xffffffff,true), | |
252b5132 RH |
128 | }; |
129 | static reloc_howto_type elf32_sparc_vtinherit_howto = | |
130 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", false,0, 0, false); | |
131 | static reloc_howto_type elf32_sparc_vtentry_howto = | |
132 | 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); | |
133 | ||
252b5132 RH |
134 | struct elf_reloc_map { |
135 | bfd_reloc_code_real_type bfd_reloc_val; | |
136 | unsigned char elf_reloc_val; | |
137 | }; | |
138 | ||
139 | static CONST struct elf_reloc_map sparc_reloc_map[] = | |
140 | { | |
141 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
142 | { BFD_RELOC_16, R_SPARC_16, }, | |
143 | { BFD_RELOC_8, R_SPARC_8 }, | |
144 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
145 | { BFD_RELOC_CTOR, R_SPARC_32 }, | |
146 | { BFD_RELOC_32, R_SPARC_32 }, | |
147 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
148 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
149 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
150 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
151 | { BFD_RELOC_SPARC22, R_SPARC_22 }, | |
152 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
153 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
154 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
155 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
156 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
157 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
158 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
159 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
160 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
161 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
162 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
163 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
0f2712ed NC |
164 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
165 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, | |
166 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, | |
167 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, | |
168 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, | |
169 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, | |
170 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, | |
171 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, | |
172 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, | |
173 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, | |
174 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, | |
175 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, | |
176 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, | |
177 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, | |
178 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, | |
179 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, | |
180 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, | |
181 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, | |
182 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, | |
183 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, | |
184 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, | |
252b5132 RH |
185 | }; |
186 | ||
187 | static reloc_howto_type * | |
188 | elf32_sparc_reloc_type_lookup (abfd, code) | |
5f771d47 | 189 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
190 | bfd_reloc_code_real_type code; |
191 | { | |
192 | unsigned int i; | |
435b1e90 | 193 | |
252b5132 RH |
194 | switch (code) |
195 | { | |
196 | case BFD_RELOC_VTABLE_INHERIT: | |
197 | return &elf32_sparc_vtinherit_howto; | |
198 | ||
199 | case BFD_RELOC_VTABLE_ENTRY: | |
200 | return &elf32_sparc_vtentry_howto; | |
201 | ||
202 | default: | |
203 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
204 | { | |
205 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
206 | return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
207 | } | |
208 | } | |
209 | bfd_set_error (bfd_error_bad_value); | |
210 | return NULL; | |
211 | } | |
212 | ||
213 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, | |
214 | and elf64-sparc.c has its own copy. */ | |
215 | ||
216 | static void | |
217 | elf32_sparc_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 218 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
219 | arelent *cache_ptr; |
220 | Elf_Internal_Rela *dst; | |
221 | { | |
60dac299 RH |
222 | switch (ELF32_R_TYPE(dst->r_info)) |
223 | { | |
224 | case R_SPARC_GNU_VTINHERIT: | |
225 | cache_ptr->howto = &elf32_sparc_vtinherit_howto; | |
226 | break; | |
227 | ||
228 | case R_SPARC_GNU_VTENTRY: | |
229 | cache_ptr->howto = &elf32_sparc_vtentry_howto; | |
230 | break; | |
231 | ||
232 | default: | |
233 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); | |
234 | cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
235 | } | |
252b5132 RH |
236 | } |
237 | \f | |
238 | /* For unsupported relocs. */ | |
239 | ||
240 | static bfd_reloc_status_type | |
241 | sparc_elf_notsupported_reloc (abfd, | |
242 | reloc_entry, | |
243 | symbol, | |
244 | data, | |
245 | input_section, | |
246 | output_bfd, | |
247 | error_message) | |
5f771d47 ILT |
248 | bfd *abfd ATTRIBUTE_UNUSED; |
249 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
250 | asymbol *symbol ATTRIBUTE_UNUSED; | |
251 | PTR data ATTRIBUTE_UNUSED; | |
252 | asection *input_section ATTRIBUTE_UNUSED; | |
253 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
254 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
255 | { |
256 | return bfd_reloc_notsupported; | |
257 | } | |
258 | ||
259 | /* Handle the WDISP16 reloc. */ | |
260 | ||
261 | static bfd_reloc_status_type | |
262 | sparc_elf_wdisp16_reloc (abfd, | |
263 | reloc_entry, | |
264 | symbol, | |
265 | data, | |
266 | input_section, | |
267 | output_bfd, | |
268 | error_message) | |
269 | bfd *abfd; | |
270 | arelent *reloc_entry; | |
271 | asymbol *symbol; | |
272 | PTR data; | |
273 | asection *input_section; | |
274 | bfd *output_bfd; | |
5f771d47 | 275 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
276 | { |
277 | bfd_vma relocation; | |
278 | bfd_vma x; | |
279 | ||
280 | if (output_bfd != (bfd *) NULL | |
281 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
282 | && (! reloc_entry->howto->partial_inplace | |
283 | || reloc_entry->addend == 0)) | |
284 | { | |
285 | reloc_entry->address += input_section->output_offset; | |
286 | return bfd_reloc_ok; | |
287 | } | |
288 | ||
289 | if (output_bfd != NULL) | |
290 | return bfd_reloc_continue; | |
291 | ||
292 | if (reloc_entry->address > input_section->_cooked_size) | |
293 | return bfd_reloc_outofrange; | |
294 | ||
295 | relocation = (symbol->value | |
296 | + symbol->section->output_section->vma | |
297 | + symbol->section->output_offset); | |
298 | relocation += reloc_entry->addend; | |
299 | relocation -= (input_section->output_section->vma | |
300 | + input_section->output_offset); | |
301 | relocation -= reloc_entry->address; | |
302 | ||
303 | x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
304 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
305 | | ((relocation >> 2) & 0x3fff)); | |
306 | bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); | |
307 | ||
308 | if ((bfd_signed_vma) relocation < - 0x40000 | |
309 | || (bfd_signed_vma) relocation > 0x3ffff) | |
310 | return bfd_reloc_overflow; | |
311 | else | |
312 | return bfd_reloc_ok; | |
313 | } | |
314 | \f | |
315 | /* Functions for the SPARC ELF linker. */ | |
316 | ||
317 | /* The name of the dynamic interpreter. This is put in the .interp | |
318 | section. */ | |
319 | ||
320 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
321 | ||
322 | /* The nop opcode we use. */ | |
323 | ||
324 | #define SPARC_NOP 0x01000000 | |
325 | ||
326 | /* The size in bytes of an entry in the procedure linkage table. */ | |
327 | ||
328 | #define PLT_ENTRY_SIZE 12 | |
329 | ||
330 | /* The first four entries in a procedure linkage table are reserved, | |
331 | and the initial contents are unimportant (we zero them out). | |
332 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
333 | supplement to see how this works. */ | |
334 | ||
335 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
336 | #define PLT_ENTRY_WORD0 0x03000000 | |
337 | /* b,a .plt0. We fill in the offset later. */ | |
338 | #define PLT_ENTRY_WORD1 0x30800000 | |
339 | /* nop. */ | |
340 | #define PLT_ENTRY_WORD2 SPARC_NOP | |
341 | ||
342 | /* Look through the relocs for a section during the first phase, and | |
343 | allocate space in the global offset table or procedure linkage | |
344 | table. */ | |
345 | ||
346 | static boolean | |
347 | elf32_sparc_check_relocs (abfd, info, sec, relocs) | |
348 | bfd *abfd; | |
349 | struct bfd_link_info *info; | |
350 | asection *sec; | |
351 | const Elf_Internal_Rela *relocs; | |
352 | { | |
353 | bfd *dynobj; | |
354 | Elf_Internal_Shdr *symtab_hdr; | |
355 | struct elf_link_hash_entry **sym_hashes; | |
356 | bfd_vma *local_got_offsets; | |
357 | const Elf_Internal_Rela *rel; | |
358 | const Elf_Internal_Rela *rel_end; | |
359 | asection *sgot; | |
360 | asection *srelgot; | |
361 | asection *sreloc; | |
362 | ||
363 | if (info->relocateable) | |
364 | return true; | |
365 | ||
366 | dynobj = elf_hash_table (info)->dynobj; | |
367 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
368 | sym_hashes = elf_sym_hashes (abfd); | |
369 | local_got_offsets = elf_local_got_offsets (abfd); | |
370 | ||
371 | sgot = NULL; | |
372 | srelgot = NULL; | |
373 | sreloc = NULL; | |
374 | ||
375 | rel_end = relocs + sec->reloc_count; | |
376 | for (rel = relocs; rel < rel_end; rel++) | |
377 | { | |
378 | unsigned long r_symndx; | |
379 | struct elf_link_hash_entry *h; | |
380 | ||
381 | r_symndx = ELF32_R_SYM (rel->r_info); | |
382 | if (r_symndx < symtab_hdr->sh_info) | |
383 | h = NULL; | |
384 | else | |
385 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
386 | ||
387 | switch (ELF32_R_TYPE (rel->r_info)) | |
388 | { | |
389 | case R_SPARC_GOT10: | |
390 | case R_SPARC_GOT13: | |
391 | case R_SPARC_GOT22: | |
392 | /* This symbol requires a global offset table entry. */ | |
393 | ||
394 | if (dynobj == NULL) | |
395 | { | |
396 | /* Create the .got section. */ | |
397 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
398 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
399 | return false; | |
400 | } | |
401 | ||
402 | if (sgot == NULL) | |
403 | { | |
404 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
405 | BFD_ASSERT (sgot != NULL); | |
406 | } | |
407 | ||
408 | if (srelgot == NULL | |
409 | && (h != NULL || info->shared)) | |
410 | { | |
411 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
412 | if (srelgot == NULL) | |
413 | { | |
414 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
415 | if (srelgot == NULL | |
416 | || ! bfd_set_section_flags (dynobj, srelgot, | |
417 | (SEC_ALLOC | |
418 | | SEC_LOAD | |
419 | | SEC_HAS_CONTENTS | |
420 | | SEC_IN_MEMORY | |
421 | | SEC_LINKER_CREATED | |
422 | | SEC_READONLY)) | |
423 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
424 | return false; | |
425 | } | |
426 | } | |
427 | ||
428 | if (h != NULL) | |
429 | { | |
430 | if (h->got.offset != (bfd_vma) -1) | |
431 | { | |
432 | /* We have already allocated space in the .got. */ | |
433 | break; | |
434 | } | |
435 | h->got.offset = sgot->_raw_size; | |
436 | ||
437 | /* Make sure this symbol is output as a dynamic symbol. */ | |
438 | if (h->dynindx == -1) | |
439 | { | |
440 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
441 | return false; | |
442 | } | |
443 | ||
444 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
445 | } | |
446 | else | |
447 | { | |
448 | /* This is a global offset table entry for a local | |
449 | symbol. */ | |
450 | if (local_got_offsets == NULL) | |
451 | { | |
452 | size_t size; | |
453 | register unsigned int i; | |
454 | ||
455 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
456 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
457 | if (local_got_offsets == NULL) | |
458 | return false; | |
459 | elf_local_got_offsets (abfd) = local_got_offsets; | |
460 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
461 | local_got_offsets[i] = (bfd_vma) -1; | |
462 | } | |
463 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
464 | { | |
465 | /* We have already allocated space in the .got. */ | |
466 | break; | |
467 | } | |
468 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
469 | ||
470 | if (info->shared) | |
471 | { | |
472 | /* If we are generating a shared object, we need to | |
473 | output a R_SPARC_RELATIVE reloc so that the | |
474 | dynamic linker can adjust this GOT entry. */ | |
475 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
476 | } | |
477 | } | |
478 | ||
479 | sgot->_raw_size += 4; | |
480 | ||
481 | /* If the .got section is more than 0x1000 bytes, we add | |
482 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
483 | bit relocations have a greater chance of working. */ | |
484 | if (sgot->_raw_size >= 0x1000 | |
485 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
486 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
487 | ||
488 | break; | |
489 | ||
490 | case R_SPARC_WPLT30: | |
491 | /* This symbol requires a procedure linkage table entry. We | |
492 | actually build the entry in adjust_dynamic_symbol, | |
493 | because this might be a case of linking PIC code without | |
494 | linking in any dynamic objects, in which case we don't | |
495 | need to generate a procedure linkage table after all. */ | |
496 | ||
497 | if (h == NULL) | |
498 | { | |
499 | /* The Solaris native assembler will generate a WPLT30 | |
500 | reloc for a local symbol if you assemble a call from | |
501 | one section to another when using -K pic. We treat | |
502 | it as WDISP30. */ | |
503 | break; | |
504 | } | |
505 | ||
506 | /* Make sure this symbol is output as a dynamic symbol. */ | |
507 | if (h->dynindx == -1) | |
508 | { | |
509 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
510 | return false; | |
511 | } | |
512 | ||
513 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
514 | ||
515 | break; | |
516 | ||
517 | case R_SPARC_PC10: | |
518 | case R_SPARC_PC22: | |
7843f00e ILT |
519 | if (h != NULL) |
520 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
521 | ||
252b5132 RH |
522 | if (h != NULL |
523 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
524 | break; | |
525 | /* Fall through. */ | |
526 | case R_SPARC_DISP8: | |
527 | case R_SPARC_DISP16: | |
528 | case R_SPARC_DISP32: | |
529 | case R_SPARC_WDISP30: | |
530 | case R_SPARC_WDISP22: | |
531 | case R_SPARC_WDISP19: | |
532 | case R_SPARC_WDISP16: | |
7843f00e ILT |
533 | if (h != NULL) |
534 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
535 | ||
252b5132 RH |
536 | /* If we are linking with -Bsymbolic, we do not need to copy |
537 | a PC relative reloc against a global symbol which is | |
538 | defined in an object we are including in the link (i.e., | |
539 | DEF_REGULAR is set). FIXME: At this point we have not | |
540 | seen all the input files, so it is possible that | |
541 | DEF_REGULAR is not set now but will be set later (it is | |
542 | never cleared). This needs to be handled as in | |
543 | elf32-i386.c. */ | |
544 | if (h == NULL | |
545 | || (info->symbolic | |
546 | && (h->elf_link_hash_flags | |
547 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
548 | break; | |
549 | /* Fall through. */ | |
550 | case R_SPARC_8: | |
551 | case R_SPARC_16: | |
552 | case R_SPARC_32: | |
553 | case R_SPARC_HI22: | |
554 | case R_SPARC_22: | |
555 | case R_SPARC_13: | |
556 | case R_SPARC_LO10: | |
0f2712ed | 557 | case R_SPARC_UA16: |
252b5132 | 558 | case R_SPARC_UA32: |
7843f00e ILT |
559 | if (h != NULL) |
560 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
561 | ||
20278fa3 | 562 | if (info->shared && (sec->flags & SEC_ALLOC)) |
252b5132 RH |
563 | { |
564 | /* When creating a shared object, we must copy these | |
565 | relocs into the output file. We create a reloc | |
566 | section in dynobj and make room for the reloc. */ | |
567 | if (sreloc == NULL) | |
568 | { | |
569 | const char *name; | |
570 | ||
571 | name = (bfd_elf_string_from_elf_section | |
572 | (abfd, | |
573 | elf_elfheader (abfd)->e_shstrndx, | |
574 | elf_section_data (sec)->rel_hdr.sh_name)); | |
575 | if (name == NULL) | |
576 | return false; | |
577 | ||
578 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
579 | && strcmp (bfd_get_section_name (abfd, sec), | |
580 | name + 5) == 0); | |
581 | ||
582 | sreloc = bfd_get_section_by_name (dynobj, name); | |
583 | if (sreloc == NULL) | |
584 | { | |
585 | flagword flags; | |
586 | ||
587 | sreloc = bfd_make_section (dynobj, name); | |
588 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
589 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
590 | if ((sec->flags & SEC_ALLOC) != 0) | |
591 | flags |= SEC_ALLOC | SEC_LOAD; | |
592 | if (sreloc == NULL | |
593 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
594 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
595 | return false; | |
596 | } | |
db6751f2 JJ |
597 | if (sec->flags & SEC_READONLY) |
598 | info->flags |= DF_TEXTREL; | |
252b5132 RH |
599 | } |
600 | ||
601 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
602 | } | |
603 | ||
604 | break; | |
605 | ||
606 | case R_SPARC_GNU_VTINHERIT: | |
607 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
608 | return false; | |
609 | break; | |
610 | ||
611 | case R_SPARC_GNU_VTENTRY: | |
612 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
613 | return false; | |
614 | break; | |
615 | ||
616 | default: | |
617 | break; | |
618 | } | |
619 | } | |
620 | ||
621 | return true; | |
622 | } | |
623 | ||
624 | static asection * | |
625 | elf32_sparc_gc_mark_hook (abfd, info, rel, h, sym) | |
626 | bfd *abfd; | |
5f771d47 | 627 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
628 | Elf_Internal_Rela *rel; |
629 | struct elf_link_hash_entry *h; | |
630 | Elf_Internal_Sym *sym; | |
631 | { | |
632 | ||
633 | if (h != NULL) | |
634 | { | |
635 | switch (ELF32_R_TYPE (rel->r_info)) | |
636 | { | |
637 | case R_SPARC_GNU_VTINHERIT: | |
638 | case R_SPARC_GNU_VTENTRY: | |
639 | break; | |
640 | ||
641 | default: | |
642 | switch (h->root.type) | |
643 | { | |
644 | case bfd_link_hash_defined: | |
645 | case bfd_link_hash_defweak: | |
646 | return h->root.u.def.section; | |
647 | ||
648 | case bfd_link_hash_common: | |
649 | return h->root.u.c.p->section; | |
e049a0de ILT |
650 | |
651 | default: | |
652 | break; | |
252b5132 RH |
653 | } |
654 | } | |
655 | } | |
656 | else | |
657 | { | |
658 | if (!(elf_bad_symtab (abfd) | |
659 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
660 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
661 | && sym->st_shndx != SHN_COMMON)) | |
662 | { | |
663 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
664 | } | |
665 | } | |
666 | ||
667 | return NULL; | |
668 | } | |
669 | ||
670 | /* Update the got entry reference counts for the section being removed. */ | |
671 | static boolean | |
672 | elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs) | |
673 | bfd *abfd; | |
5f771d47 | 674 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
675 | asection *sec; |
676 | const Elf_Internal_Rela *relocs; | |
677 | { | |
678 | ||
679 | Elf_Internal_Shdr *symtab_hdr; | |
680 | struct elf_link_hash_entry **sym_hashes; | |
681 | bfd_signed_vma *local_got_refcounts; | |
682 | const Elf_Internal_Rela *rel, *relend; | |
683 | unsigned long r_symndx; | |
684 | struct elf_link_hash_entry *h; | |
685 | ||
686 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
687 | sym_hashes = elf_sym_hashes (abfd); | |
688 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
689 | ||
690 | relend = relocs + sec->reloc_count; | |
691 | for (rel = relocs; rel < relend; rel++) | |
692 | switch (ELF32_R_TYPE (rel->r_info)) | |
693 | { | |
694 | case R_SPARC_GOT10: | |
695 | case R_SPARC_GOT13: | |
696 | case R_SPARC_GOT22: | |
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->got.refcount > 0) | |
702 | h->got.refcount--; | |
703 | } | |
704 | else | |
705 | { | |
706 | if (local_got_refcounts[r_symndx] > 0) | |
707 | local_got_refcounts[r_symndx]--; | |
708 | } | |
709 | break; | |
710 | ||
711 | case R_SPARC_PLT32: | |
712 | case R_SPARC_HIPLT22: | |
713 | case R_SPARC_LOPLT10: | |
714 | case R_SPARC_PCPLT32: | |
715 | case R_SPARC_PCPLT10: | |
716 | r_symndx = ELF32_R_SYM (rel->r_info); | |
717 | if (r_symndx >= symtab_hdr->sh_info) | |
718 | { | |
719 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
720 | if (h->plt.refcount > 0) | |
721 | h->plt.refcount--; | |
722 | } | |
723 | break; | |
724 | ||
725 | default: | |
726 | break; | |
727 | } | |
728 | ||
729 | return true; | |
730 | } | |
731 | ||
732 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
733 | regular object. The current definition is in some section of the | |
734 | dynamic object, but we're not including those sections. We have to | |
735 | change the definition to something the rest of the link can | |
736 | understand. */ | |
737 | ||
738 | static boolean | |
739 | elf32_sparc_adjust_dynamic_symbol (info, h) | |
740 | struct bfd_link_info *info; | |
741 | struct elf_link_hash_entry *h; | |
742 | { | |
743 | bfd *dynobj; | |
744 | asection *s; | |
745 | unsigned int power_of_two; | |
746 | ||
747 | dynobj = elf_hash_table (info)->dynobj; | |
748 | ||
749 | /* Make sure we know what is going on here. */ | |
750 | BFD_ASSERT (dynobj != NULL | |
751 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
752 | || h->weakdef != NULL | |
753 | || ((h->elf_link_hash_flags | |
754 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
755 | && (h->elf_link_hash_flags | |
756 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
757 | && (h->elf_link_hash_flags | |
758 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
759 | ||
760 | /* If this is a function, put it in the procedure linkage table. We | |
761 | will fill in the contents of the procedure linkage table later | |
762 | (although we could actually do it here). The STT_NOTYPE | |
763 | condition is a hack specifically for the Oracle libraries | |
764 | delivered for Solaris; for some inexplicable reason, they define | |
765 | some of their functions as STT_NOTYPE when they really should be | |
766 | STT_FUNC. */ | |
767 | if (h->type == STT_FUNC | |
768 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 | |
769 | || (h->type == STT_NOTYPE | |
770 | && (h->root.type == bfd_link_hash_defined | |
771 | || h->root.type == bfd_link_hash_defweak) | |
772 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
773 | { | |
774 | if (! elf_hash_table (info)->dynamic_sections_created | |
775 | || ((!info->shared || info->symbolic || h->dynindx == -1) | |
776 | && (h->elf_link_hash_flags | |
777 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
778 | { | |
779 | /* This case can occur if we saw a WPLT30 reloc in an input | |
780 | file, but none of the input files were dynamic objects. | |
781 | Or, when linking the main application or a -Bsymbolic | |
782 | shared library against PIC code. Or when a global symbol | |
783 | has been made private, e.g. via versioning. | |
784 | ||
785 | In these cases we know what value the symbol will resolve | |
786 | to, so we don't actually need to build a procedure linkage | |
787 | table, and we can just do a WDISP30 reloc instead. */ | |
788 | ||
789 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
790 | return true; | |
791 | } | |
792 | ||
793 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
794 | BFD_ASSERT (s != NULL); | |
795 | ||
796 | /* The first four entries in .plt are reserved. */ | |
797 | if (s->_raw_size == 0) | |
798 | s->_raw_size = 4 * PLT_ENTRY_SIZE; | |
799 | ||
800 | /* The procedure linkage table has a maximum size. */ | |
801 | if (s->_raw_size >= 0x400000) | |
802 | { | |
803 | bfd_set_error (bfd_error_bad_value); | |
804 | return false; | |
805 | } | |
806 | ||
807 | /* If this symbol is not defined in a regular file, and we are | |
808 | not generating a shared library, then set the symbol to this | |
809 | location in the .plt. This is required to make function | |
810 | pointers compare as equal between the normal executable and | |
811 | the shared library. */ | |
812 | if (! info->shared | |
813 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
814 | { | |
815 | h->root.u.def.section = s; | |
816 | h->root.u.def.value = s->_raw_size; | |
817 | } | |
818 | ||
819 | h->plt.offset = s->_raw_size; | |
820 | ||
821 | /* Make room for this entry. */ | |
822 | s->_raw_size += PLT_ENTRY_SIZE; | |
823 | ||
824 | /* We also need to make an entry in the .rela.plt section. */ | |
825 | ||
826 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
827 | BFD_ASSERT (s != NULL); | |
828 | s->_raw_size += sizeof (Elf32_External_Rela); | |
829 | ||
830 | return true; | |
831 | } | |
832 | ||
833 | /* If this is a weak symbol, and there is a real definition, the | |
834 | processor independent code will have arranged for us to see the | |
835 | real definition first, and we can just use the same value. */ | |
836 | if (h->weakdef != NULL) | |
837 | { | |
838 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
839 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
840 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
841 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
842 | return true; | |
843 | } | |
844 | ||
845 | /* This is a reference to a symbol defined by a dynamic object which | |
846 | is not a function. */ | |
847 | ||
848 | /* If we are creating a shared library, we must presume that the | |
849 | only references to the symbol are via the global offset table. | |
850 | For such cases we need not do anything here; the relocations will | |
851 | be handled correctly by relocate_section. */ | |
852 | if (info->shared) | |
853 | return true; | |
854 | ||
7843f00e ILT |
855 | /* If there are no references to this symbol that do not use the |
856 | GOT, we don't need to generate a copy reloc. */ | |
857 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
858 | return true; | |
859 | ||
252b5132 RH |
860 | /* We must allocate the symbol in our .dynbss section, which will |
861 | become part of the .bss section of the executable. There will be | |
862 | an entry for this symbol in the .dynsym section. The dynamic | |
863 | object will contain position independent code, so all references | |
864 | from the dynamic object to this symbol will go through the global | |
865 | offset table. The dynamic linker will use the .dynsym entry to | |
866 | determine the address it must put in the global offset table, so | |
867 | both the dynamic object and the regular object will refer to the | |
868 | same memory location for the variable. */ | |
869 | ||
870 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
871 | BFD_ASSERT (s != NULL); | |
872 | ||
873 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
874 | to copy the initial value out of the dynamic object and into the | |
875 | runtime process image. We need to remember the offset into the | |
876 | .rel.bss section we are going to use. */ | |
877 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
878 | { | |
879 | asection *srel; | |
880 | ||
881 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
882 | BFD_ASSERT (srel != NULL); | |
883 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
884 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
885 | } | |
886 | ||
887 | /* We need to figure out the alignment required for this symbol. I | |
888 | have no idea how ELF linkers handle this. */ | |
889 | power_of_two = bfd_log2 (h->size); | |
890 | if (power_of_two > 3) | |
891 | power_of_two = 3; | |
892 | ||
893 | /* Apply the required alignment. */ | |
894 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
895 | (bfd_size_type) (1 << power_of_two)); | |
896 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
897 | { | |
898 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
899 | return false; | |
900 | } | |
901 | ||
902 | /* Define the symbol as being at this point in the section. */ | |
903 | h->root.u.def.section = s; | |
904 | h->root.u.def.value = s->_raw_size; | |
905 | ||
906 | /* Increment the section size to make room for the symbol. */ | |
907 | s->_raw_size += h->size; | |
908 | ||
909 | return true; | |
910 | } | |
911 | ||
912 | /* Set the sizes of the dynamic sections. */ | |
913 | ||
914 | static boolean | |
915 | elf32_sparc_size_dynamic_sections (output_bfd, info) | |
db6751f2 | 916 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
917 | struct bfd_link_info *info; |
918 | { | |
919 | bfd *dynobj; | |
920 | asection *s; | |
252b5132 RH |
921 | boolean relplt; |
922 | ||
923 | dynobj = elf_hash_table (info)->dynobj; | |
924 | BFD_ASSERT (dynobj != NULL); | |
925 | ||
926 | if (elf_hash_table (info)->dynamic_sections_created) | |
927 | { | |
928 | /* Set the contents of the .interp section to the interpreter. */ | |
929 | if (! info->shared) | |
930 | { | |
931 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
932 | BFD_ASSERT (s != NULL); | |
933 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
934 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
935 | } | |
936 | ||
937 | /* Make space for the trailing nop in .plt. */ | |
938 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
939 | BFD_ASSERT (s != NULL); | |
940 | if (s->_raw_size > 0) | |
941 | s->_raw_size += 4; | |
942 | } | |
943 | else | |
944 | { | |
945 | /* We may have created entries in the .rela.got section. | |
946 | However, if we are not creating the dynamic sections, we will | |
947 | not actually use these entries. Reset the size of .rela.got, | |
948 | which will cause it to get stripped from the output file | |
949 | below. */ | |
950 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
951 | if (s != NULL) | |
952 | s->_raw_size = 0; | |
953 | } | |
954 | ||
955 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
956 | determined the sizes of the various dynamic sections. Allocate | |
957 | memory for them. */ | |
252b5132 RH |
958 | relplt = false; |
959 | for (s = dynobj->sections; s != NULL; s = s->next) | |
960 | { | |
961 | const char *name; | |
962 | boolean strip; | |
963 | ||
964 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
965 | continue; | |
966 | ||
967 | /* It's OK to base decisions on the section name, because none | |
968 | of the dynobj section names depend upon the input files. */ | |
969 | name = bfd_get_section_name (dynobj, s); | |
970 | ||
971 | strip = false; | |
972 | ||
973 | if (strncmp (name, ".rela", 5) == 0) | |
974 | { | |
975 | if (s->_raw_size == 0) | |
976 | { | |
977 | /* If we don't need this section, strip it from the | |
978 | output file. This is to handle .rela.bss and | |
979 | .rel.plt. We must create it in | |
980 | create_dynamic_sections, because it must be created | |
981 | before the linker maps input sections to output | |
982 | sections. The linker does that before | |
983 | adjust_dynamic_symbol is called, and it is that | |
984 | function which decides whether anything needs to go | |
985 | into these sections. */ | |
986 | strip = true; | |
987 | } | |
988 | else | |
989 | { | |
252b5132 RH |
990 | if (strcmp (name, ".rela.plt") == 0) |
991 | relplt = true; | |
992 | ||
993 | /* We use the reloc_count field as a counter if we need | |
994 | to copy relocs into the output file. */ | |
995 | s->reloc_count = 0; | |
996 | } | |
997 | } | |
998 | else if (strcmp (name, ".plt") != 0 | |
999 | && strcmp (name, ".got") != 0) | |
1000 | { | |
1001 | /* It's not one of our sections, so don't allocate space. */ | |
1002 | continue; | |
1003 | } | |
1004 | ||
1005 | if (strip) | |
1006 | { | |
7f8d5fc9 | 1007 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1008 | continue; |
1009 | } | |
1010 | ||
1011 | /* Allocate memory for the section contents. */ | |
7a9af8c4 NC |
1012 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1013 | Unused entries should be reclaimed before the section's contents | |
1014 | are written out, but at the moment this does not happen. Thus in | |
1015 | order to prevent writing out garbage, we initialise the section's | |
1016 | contents to zero. */ | |
1017 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
252b5132 RH |
1018 | if (s->contents == NULL && s->_raw_size != 0) |
1019 | return false; | |
1020 | } | |
1021 | ||
1022 | if (elf_hash_table (info)->dynamic_sections_created) | |
1023 | { | |
1024 | /* Add some entries to the .dynamic section. We fill in the | |
1025 | values later, in elf32_sparc_finish_dynamic_sections, but we | |
1026 | must add the entries now so that we get the correct size for | |
1027 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1028 | dynamic linker and used by the debugger. */ | |
1029 | if (! info->shared) | |
1030 | { | |
1031 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
1032 | return false; | |
1033 | } | |
1034 | ||
1035 | if (relplt) | |
1036 | { | |
1037 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) | |
1038 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
1039 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
1040 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
1041 | return false; | |
1042 | } | |
1043 | ||
1044 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
1045 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
1046 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
1047 | sizeof (Elf32_External_Rela))) | |
1048 | return false; | |
1049 | ||
db6751f2 | 1050 | if (info->flags & DF_TEXTREL) |
252b5132 RH |
1051 | { |
1052 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
1053 | return false; | |
1054 | } | |
1055 | } | |
1056 | ||
252b5132 RH |
1057 | return true; |
1058 | } | |
1059 | ||
f7775d95 JJ |
1060 | #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0) |
1061 | #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1) | |
1062 | ||
f7775d95 JJ |
1063 | static boolean |
1064 | elf32_sparc_relax_section (abfd, section, link_info, again) | |
1065 | bfd *abfd ATTRIBUTE_UNUSED; | |
1066 | asection *section ATTRIBUTE_UNUSED; | |
1067 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
1068 | boolean *again; | |
1069 | { | |
1070 | *again = false; | |
1071 | SET_SEC_DO_RELAX (section); | |
1072 | return true; | |
1073 | } | |
1074 | ||
252b5132 RH |
1075 | /* Relocate a SPARC ELF section. */ |
1076 | ||
1077 | static boolean | |
1078 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, | |
1079 | contents, relocs, local_syms, local_sections) | |
1080 | bfd *output_bfd; | |
1081 | struct bfd_link_info *info; | |
1082 | bfd *input_bfd; | |
1083 | asection *input_section; | |
1084 | bfd_byte *contents; | |
1085 | Elf_Internal_Rela *relocs; | |
1086 | Elf_Internal_Sym *local_syms; | |
1087 | asection **local_sections; | |
1088 | { | |
1089 | bfd *dynobj; | |
1090 | Elf_Internal_Shdr *symtab_hdr; | |
1091 | struct elf_link_hash_entry **sym_hashes; | |
1092 | bfd_vma *local_got_offsets; | |
1093 | bfd_vma got_base; | |
1094 | asection *sgot; | |
1095 | asection *splt; | |
1096 | asection *sreloc; | |
1097 | Elf_Internal_Rela *rel; | |
1098 | Elf_Internal_Rela *relend; | |
1099 | ||
1100 | dynobj = elf_hash_table (info)->dynobj; | |
1101 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1102 | sym_hashes = elf_sym_hashes (input_bfd); | |
1103 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1104 | ||
1105 | if (elf_hash_table (info)->hgot == NULL) | |
1106 | got_base = 0; | |
1107 | else | |
1108 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1109 | ||
1110 | sgot = NULL; | |
1111 | splt = NULL; | |
1112 | sreloc = NULL; | |
1113 | ||
1114 | rel = relocs; | |
1115 | relend = relocs + input_section->reloc_count; | |
1116 | for (; rel < relend; rel++) | |
1117 | { | |
1118 | int r_type; | |
1119 | reloc_howto_type *howto; | |
1120 | unsigned long r_symndx; | |
1121 | struct elf_link_hash_entry *h; | |
1122 | Elf_Internal_Sym *sym; | |
1123 | asection *sec; | |
1124 | bfd_vma relocation; | |
1125 | bfd_reloc_status_type r; | |
1126 | ||
1127 | r_type = ELF32_R_TYPE (rel->r_info); | |
1128 | ||
435b1e90 | 1129 | if (r_type == R_SPARC_GNU_VTINHERIT |
252b5132 RH |
1130 | || r_type == R_SPARC_GNU_VTENTRY) |
1131 | continue; | |
1132 | ||
60dac299 | 1133 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1134 | { |
1135 | bfd_set_error (bfd_error_bad_value); | |
1136 | return false; | |
1137 | } | |
1138 | howto = _bfd_sparc_elf_howto_table + r_type; | |
1139 | ||
1140 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1141 | ||
1142 | if (info->relocateable) | |
1143 | { | |
1144 | /* This is a relocateable link. We don't have to change | |
1145 | anything, unless the reloc is against a section symbol, | |
1146 | in which case we have to adjust according to where the | |
1147 | section symbol winds up in the output section. */ | |
1148 | if (r_symndx < symtab_hdr->sh_info) | |
1149 | { | |
1150 | sym = local_syms + r_symndx; | |
1151 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1152 | { | |
1153 | sec = local_sections[r_symndx]; | |
1154 | rel->r_addend += sec->output_offset + sym->st_value; | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | continue; | |
1159 | } | |
1160 | ||
1161 | /* This is a final link. */ | |
1162 | h = NULL; | |
1163 | sym = NULL; | |
1164 | sec = NULL; | |
1165 | if (r_symndx < symtab_hdr->sh_info) | |
1166 | { | |
1167 | sym = local_syms + r_symndx; | |
1168 | sec = local_sections[r_symndx]; | |
1169 | relocation = (sec->output_section->vma | |
1170 | + sec->output_offset | |
1171 | + sym->st_value); | |
1172 | } | |
1173 | else | |
1174 | { | |
1175 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1176 | while (h->root.type == bfd_link_hash_indirect | |
1177 | || h->root.type == bfd_link_hash_warning) | |
1178 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1179 | if (h->root.type == bfd_link_hash_defined | |
1180 | || h->root.type == bfd_link_hash_defweak) | |
1181 | { | |
1182 | sec = h->root.u.def.section; | |
1183 | if ((r_type == R_SPARC_WPLT30 | |
1184 | && h->plt.offset != (bfd_vma) -1) | |
1185 | || ((r_type == R_SPARC_GOT10 | |
1186 | || r_type == R_SPARC_GOT13 | |
1187 | || r_type == R_SPARC_GOT22) | |
1188 | && elf_hash_table (info)->dynamic_sections_created | |
1189 | && (! info->shared | |
1190 | || (! info->symbolic && h->dynindx != -1) | |
1191 | || (h->elf_link_hash_flags | |
1192 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1193 | || (info->shared | |
1194 | && ((! info->symbolic && h->dynindx != -1) | |
1195 | || (h->elf_link_hash_flags | |
1196 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1197 | && (r_type == R_SPARC_8 | |
1198 | || r_type == R_SPARC_16 | |
1199 | || r_type == R_SPARC_32 | |
1200 | || r_type == R_SPARC_DISP8 | |
1201 | || r_type == R_SPARC_DISP16 | |
1202 | || r_type == R_SPARC_DISP32 | |
1203 | || r_type == R_SPARC_WDISP30 | |
1204 | || r_type == R_SPARC_WDISP22 | |
1205 | || r_type == R_SPARC_WDISP19 | |
1206 | || r_type == R_SPARC_WDISP16 | |
1207 | || r_type == R_SPARC_HI22 | |
1208 | || r_type == R_SPARC_22 | |
1209 | || r_type == R_SPARC_13 | |
1210 | || r_type == R_SPARC_LO10 | |
0f2712ed | 1211 | || r_type == R_SPARC_UA16 |
252b5132 RH |
1212 | || r_type == R_SPARC_UA32 |
1213 | || ((r_type == R_SPARC_PC10 | |
1214 | || r_type == R_SPARC_PC22) | |
1215 | && strcmp (h->root.root.string, | |
1216 | "_GLOBAL_OFFSET_TABLE_") != 0)))) | |
1217 | { | |
1218 | /* In these cases, we don't need the relocation | |
1219 | value. We check specially because in some | |
1220 | obscure cases sec->output_section will be NULL. */ | |
1221 | relocation = 0; | |
1222 | } | |
1223 | else | |
1224 | relocation = (h->root.u.def.value | |
1225 | + sec->output_section->vma | |
1226 | + sec->output_offset); | |
1227 | } | |
1228 | else if (h->root.type == bfd_link_hash_undefweak) | |
1229 | relocation = 0; | |
3a27a730 L |
1230 | else if (info->shared && !info->symbolic |
1231 | && !info->no_undefined | |
1232 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
252b5132 RH |
1233 | relocation = 0; |
1234 | else | |
1235 | { | |
1236 | if (! ((*info->callbacks->undefined_symbol) | |
1237 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1238 | input_section, rel->r_offset, |
3a27a730 L |
1239 | (!info->shared || info->no_undefined |
1240 | || ELF_ST_VISIBILITY (h->other))))) | |
252b5132 RH |
1241 | return false; |
1242 | relocation = 0; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | switch (r_type) | |
1247 | { | |
1248 | case R_SPARC_GOT10: | |
1249 | case R_SPARC_GOT13: | |
1250 | case R_SPARC_GOT22: | |
1251 | /* Relocation is to the entry for this symbol in the global | |
1252 | offset table. */ | |
1253 | if (sgot == NULL) | |
1254 | { | |
1255 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1256 | BFD_ASSERT (sgot != NULL); | |
1257 | } | |
1258 | ||
1259 | if (h != NULL) | |
1260 | { | |
1261 | bfd_vma off; | |
1262 | ||
1263 | off = h->got.offset; | |
1264 | BFD_ASSERT (off != (bfd_vma) -1); | |
1265 | ||
1266 | if (! elf_hash_table (info)->dynamic_sections_created | |
1267 | || (info->shared | |
1268 | && (info->symbolic || h->dynindx == -1) | |
1269 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
1270 | { | |
1271 | /* This is actually a static link, or it is a | |
1272 | -Bsymbolic link and the symbol is defined | |
1273 | locally, or the symbol was forced to be local | |
1274 | because of a version file. We must initialize | |
1275 | this entry in the global offset table. Since the | |
1276 | offset must always be a multiple of 4, we use the | |
1277 | least significant bit to record whether we have | |
1278 | initialized it already. | |
1279 | ||
1280 | When doing a dynamic link, we create a .rela.got | |
1281 | relocation entry to initialize the value. This | |
1282 | is done in the finish_dynamic_symbol routine. */ | |
1283 | if ((off & 1) != 0) | |
1284 | off &= ~1; | |
1285 | else | |
1286 | { | |
1287 | bfd_put_32 (output_bfd, relocation, | |
1288 | sgot->contents + off); | |
1289 | h->got.offset |= 1; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | relocation = sgot->output_offset + off - got_base; | |
1294 | } | |
1295 | else | |
1296 | { | |
1297 | bfd_vma off; | |
1298 | ||
1299 | BFD_ASSERT (local_got_offsets != NULL | |
1300 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1301 | ||
1302 | off = local_got_offsets[r_symndx]; | |
1303 | ||
1304 | /* The offset must always be a multiple of 4. We use | |
1305 | the least significant bit to record whether we have | |
1306 | already processed this entry. */ | |
1307 | if ((off & 1) != 0) | |
1308 | off &= ~1; | |
1309 | else | |
1310 | { | |
1311 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1312 | ||
1313 | if (info->shared) | |
1314 | { | |
1315 | asection *srelgot; | |
1316 | Elf_Internal_Rela outrel; | |
1317 | ||
1318 | /* We need to generate a R_SPARC_RELATIVE reloc | |
1319 | for the dynamic linker. */ | |
1320 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1321 | BFD_ASSERT (srelgot != NULL); | |
1322 | ||
1323 | outrel.r_offset = (sgot->output_section->vma | |
1324 | + sgot->output_offset | |
1325 | + off); | |
1326 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1327 | outrel.r_addend = 0; | |
1328 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1329 | (((Elf32_External_Rela *) | |
1330 | srelgot->contents) | |
1331 | + srelgot->reloc_count)); | |
1332 | ++srelgot->reloc_count; | |
1333 | } | |
1334 | ||
1335 | local_got_offsets[r_symndx] |= 1; | |
1336 | } | |
1337 | ||
1338 | relocation = sgot->output_offset + off - got_base; | |
1339 | } | |
1340 | ||
1341 | break; | |
1342 | ||
1343 | case R_SPARC_WPLT30: | |
1344 | /* Relocation is to the entry for this symbol in the | |
1345 | procedure linkage table. */ | |
1346 | ||
1347 | /* The Solaris native assembler will generate a WPLT30 reloc | |
1348 | for a local symbol if you assemble a call from one | |
1349 | section to another when using -K pic. We treat it as | |
1350 | WDISP30. */ | |
1351 | if (h == NULL) | |
1352 | break; | |
1353 | ||
1354 | if (h->plt.offset == (bfd_vma) -1) | |
1355 | { | |
1356 | /* We didn't make a PLT entry for this symbol. This | |
1357 | happens when statically linking PIC code, or when | |
1358 | using -Bsymbolic. */ | |
1359 | break; | |
1360 | } | |
1361 | ||
1362 | if (splt == NULL) | |
1363 | { | |
1364 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1365 | BFD_ASSERT (splt != NULL); | |
1366 | } | |
1367 | ||
1368 | relocation = (splt->output_section->vma | |
1369 | + splt->output_offset | |
1370 | + h->plt.offset); | |
1371 | break; | |
1372 | ||
1373 | case R_SPARC_PC10: | |
1374 | case R_SPARC_PC22: | |
1375 | if (h != NULL | |
1376 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1377 | break; | |
1378 | /* Fall through. */ | |
1379 | case R_SPARC_DISP8: | |
1380 | case R_SPARC_DISP16: | |
1381 | case R_SPARC_DISP32: | |
1382 | case R_SPARC_WDISP30: | |
1383 | case R_SPARC_WDISP22: | |
1384 | case R_SPARC_WDISP19: | |
1385 | case R_SPARC_WDISP16: | |
1386 | if (h == NULL | |
1387 | || (info->symbolic | |
1388 | && (h->elf_link_hash_flags | |
1389 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
1390 | break; | |
1391 | /* Fall through. */ | |
1392 | case R_SPARC_8: | |
1393 | case R_SPARC_16: | |
1394 | case R_SPARC_32: | |
1395 | case R_SPARC_HI22: | |
1396 | case R_SPARC_22: | |
1397 | case R_SPARC_13: | |
1398 | case R_SPARC_LO10: | |
0f2712ed | 1399 | case R_SPARC_UA16: |
252b5132 | 1400 | case R_SPARC_UA32: |
20278fa3 | 1401 | if (info->shared && (input_section->flags & SEC_ALLOC)) |
252b5132 RH |
1402 | { |
1403 | Elf_Internal_Rela outrel; | |
1404 | boolean skip; | |
1405 | ||
1406 | /* When generating a shared object, these relocations | |
1407 | are copied into the output file to be resolved at run | |
1408 | time. */ | |
1409 | ||
1410 | if (sreloc == NULL) | |
1411 | { | |
1412 | const char *name; | |
1413 | ||
1414 | name = (bfd_elf_string_from_elf_section | |
1415 | (input_bfd, | |
1416 | elf_elfheader (input_bfd)->e_shstrndx, | |
1417 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1418 | if (name == NULL) | |
1419 | return false; | |
1420 | ||
1421 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1422 | && strcmp (bfd_get_section_name (input_bfd, | |
1423 | input_section), | |
1424 | name + 5) == 0); | |
1425 | ||
1426 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1427 | BFD_ASSERT (sreloc != NULL); | |
1428 | } | |
1429 | ||
1430 | skip = false; | |
1431 | ||
1432 | if (elf_section_data (input_section)->stab_info == NULL) | |
1433 | outrel.r_offset = rel->r_offset; | |
1434 | else | |
1435 | { | |
1436 | bfd_vma off; | |
1437 | ||
1438 | off = (_bfd_stab_section_offset | |
1439 | (output_bfd, &elf_hash_table (info)->stab_info, | |
1440 | input_section, | |
1441 | &elf_section_data (input_section)->stab_info, | |
1442 | rel->r_offset)); | |
1443 | if (off == (bfd_vma) -1) | |
1444 | skip = true; | |
1445 | outrel.r_offset = off; | |
1446 | } | |
1447 | ||
1448 | outrel.r_offset += (input_section->output_section->vma | |
1449 | + input_section->output_offset); | |
1450 | ||
20278fa3 JJ |
1451 | /* Optimize unaligned reloc usage now that we know where |
1452 | it finally resides. */ | |
1453 | switch (r_type) | |
1454 | { | |
1455 | case R_SPARC_16: | |
1456 | if (outrel.r_offset & 1) | |
1457 | r_type = R_SPARC_UA16; | |
1458 | break; | |
1459 | case R_SPARC_UA16: | |
1460 | if (!(outrel.r_offset & 1)) | |
1461 | r_type = R_SPARC_16; | |
1462 | break; | |
1463 | case R_SPARC_32: | |
1464 | if (outrel.r_offset & 3) | |
1465 | r_type = R_SPARC_UA32; | |
1466 | break; | |
1467 | case R_SPARC_UA32: | |
1468 | if (!(outrel.r_offset & 3)) | |
1469 | r_type = R_SPARC_32; | |
1470 | break; | |
1471 | } | |
1472 | ||
252b5132 RH |
1473 | if (skip) |
1474 | memset (&outrel, 0, sizeof outrel); | |
1475 | /* h->dynindx may be -1 if the symbol was marked to | |
1476 | become local. */ | |
1477 | else if (h != NULL | |
1478 | && ((! info->symbolic && h->dynindx != -1) | |
1479 | || (h->elf_link_hash_flags | |
1480 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1481 | { | |
1482 | BFD_ASSERT (h->dynindx != -1); | |
1483 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1484 | outrel.r_addend = rel->r_addend; | |
1485 | } | |
1486 | else | |
1487 | { | |
1488 | if (r_type == R_SPARC_32) | |
1489 | { | |
1490 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1491 | outrel.r_addend = relocation + rel->r_addend; | |
1492 | } | |
1493 | else | |
1494 | { | |
1495 | long indx; | |
1496 | ||
1497 | if (h == NULL) | |
1498 | sec = local_sections[r_symndx]; | |
1499 | else | |
1500 | { | |
1501 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1502 | || (h->root.type | |
1503 | == bfd_link_hash_defweak)); | |
1504 | sec = h->root.u.def.section; | |
1505 | } | |
1506 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1507 | indx = 0; | |
1508 | else if (sec == NULL || sec->owner == NULL) | |
1509 | { | |
1510 | bfd_set_error (bfd_error_bad_value); | |
1511 | return false; | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | asection *osec; | |
1516 | ||
1517 | osec = sec->output_section; | |
1518 | indx = elf_section_data (osec)->dynindx; | |
1519 | ||
1520 | /* FIXME: we really should be able to link non-pic | |
1521 | shared libraries. */ | |
1522 | if (indx == 0) | |
1523 | { | |
1524 | BFD_FAIL (); | |
1525 | (*_bfd_error_handler) | |
1526 | (_("%s: probably compiled without -fPIC?"), | |
1527 | bfd_get_filename (input_bfd)); | |
1528 | bfd_set_error (bfd_error_bad_value); | |
1529 | return false; | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
840a9995 | 1534 | outrel.r_addend = relocation + rel->r_addend; |
252b5132 RH |
1535 | } |
1536 | } | |
1537 | ||
1538 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1539 | (((Elf32_External_Rela *) | |
1540 | sreloc->contents) | |
1541 | + sreloc->reloc_count)); | |
1542 | ++sreloc->reloc_count; | |
1543 | ||
1544 | /* This reloc will be computed at runtime, so there's no | |
20278fa3 JJ |
1545 | need to do anything now. */ |
1546 | continue; | |
252b5132 RH |
1547 | } |
1548 | break; | |
1549 | ||
1550 | default: | |
1551 | break; | |
1552 | } | |
1553 | ||
f7775d95 | 1554 | r = bfd_reloc_continue; |
252b5132 RH |
1555 | if (r_type == R_SPARC_WDISP16) |
1556 | { | |
1557 | bfd_vma x; | |
1558 | ||
1559 | relocation += rel->r_addend; | |
1560 | relocation -= (input_section->output_section->vma | |
1561 | + input_section->output_offset); | |
1562 | relocation -= rel->r_offset; | |
1563 | ||
1564 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1565 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
1566 | | ((relocation >> 2) & 0x3fff)); | |
1567 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1568 | ||
1569 | if ((bfd_signed_vma) relocation < - 0x40000 | |
1570 | || (bfd_signed_vma) relocation > 0x3ffff) | |
1571 | r = bfd_reloc_overflow; | |
1572 | else | |
1573 | r = bfd_reloc_ok; | |
1574 | } | |
1575 | else if (r_type == R_SPARC_REV32) | |
1576 | { | |
1577 | bfd_vma x; | |
1578 | ||
1579 | relocation = relocation + rel->r_addend; | |
1580 | ||
1581 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1582 | x = x + relocation; | |
1583 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); | |
1584 | r = bfd_reloc_ok; | |
1585 | } | |
f7775d95 JJ |
1586 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) |
1587 | && SEC_DO_RELAX (input_section) | |
1588 | && rel->r_offset + 4 < input_section->_raw_size) | |
1589 | { | |
1590 | #define G0 0 | |
1591 | #define O7 15 | |
1592 | #define XCC (2 << 20) | |
1593 | #define COND(x) (((x)&0xf)<<25) | |
1594 | #define CONDA COND(0x8) | |
1595 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) | |
1596 | #define INSN_BA (F2(0,2) | CONDA) | |
1597 | #define INSN_OR F3(2, 0x2, 0) | |
1598 | #define INSN_NOP F2(0,4) | |
1599 | ||
1600 | bfd_vma x, y; | |
1601 | ||
1602 | /* If the instruction is a call with either: | |
1603 | restore | |
1604 | arithmetic instruction with rd == %o7 | |
1605 | where rs1 != %o7 and rs2 if it is register != %o7 | |
1606 | then we can optimize if the call destination is near | |
1607 | by changing the call into a branch always. */ | |
1608 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1609 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
1610 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) | |
1611 | { | |
1612 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ | |
1613 | || ((y & OP3(0x28)) == 0 /* arithmetic */ | |
1614 | && (y & RD(~0)) == RD(O7))) | |
1615 | && (y & RS1(~0)) != RS1(O7) | |
1616 | && ((y & F3I(~0)) | |
1617 | || (y & RS2(~0)) != RS2(O7))) | |
1618 | { | |
1619 | bfd_vma reloc; | |
1620 | ||
1621 | reloc = relocation + rel->r_addend - rel->r_offset; | |
1622 | reloc -= (input_section->output_section->vma | |
1623 | + input_section->output_offset); | |
1624 | ||
1625 | /* Ensure the reloc fits into simm22. */ | |
1626 | if ((reloc & 3) == 0 | |
1627 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 | |
1628 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) | |
1629 | { | |
1630 | reloc >>= 2; | |
435b1e90 | 1631 | |
f7775d95 JJ |
1632 | /* Check whether it fits into simm19 on v9. */ |
1633 | if (((reloc & 0x3c0000) == 0 | |
1634 | || (reloc & 0x3c0000) == 0x3c0000) | |
1635 | && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) | |
1636 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ | |
1637 | else | |
1638 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ | |
1639 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1640 | r = bfd_reloc_ok; | |
1641 | if (rel->r_offset >= 4 | |
1642 | && (y & (0xffffffff ^ RS1(~0))) | |
1643 | == (INSN_OR | RD(O7) | RS2(G0))) | |
1644 | { | |
1645 | bfd_vma z; | |
1646 | unsigned int reg; | |
1647 | ||
1648 | z = bfd_get_32 (input_bfd, | |
1649 | contents + rel->r_offset - 4); | |
1650 | if ((z & (0xffffffff ^ RD(~0))) | |
1651 | != (INSN_OR | RS1(O7) | RS2(G0))) | |
1652 | break; | |
1653 | ||
1654 | /* The sequence was | |
1655 | or %o7, %g0, %rN | |
1656 | call foo | |
1657 | or %rN, %g0, %o7 | |
1658 | ||
1659 | If call foo was replaced with ba, replace | |
1660 | or %rN, %g0, %o7 with nop. */ | |
1661 | ||
1662 | reg = (y & RS1(~0)) >> 14; | |
1663 | if (reg != ((z & RD(~0)) >> 25) | |
1664 | || reg == G0 || reg == O7) | |
1665 | break; | |
1666 | ||
1667 | bfd_put_32 (input_bfd, INSN_NOP, | |
1668 | contents + rel->r_offset + 4); | |
1669 | } | |
1670 | ||
1671 | } | |
1672 | } | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | if (r == bfd_reloc_continue) | |
252b5132 RH |
1677 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1678 | contents, rel->r_offset, | |
1679 | relocation, rel->r_addend); | |
1680 | ||
252b5132 RH |
1681 | if (r != bfd_reloc_ok) |
1682 | { | |
1683 | switch (r) | |
1684 | { | |
1685 | default: | |
1686 | case bfd_reloc_outofrange: | |
1687 | abort (); | |
1688 | case bfd_reloc_overflow: | |
1689 | { | |
1690 | const char *name; | |
1691 | ||
1692 | if (h != NULL) | |
1693 | name = h->root.root.string; | |
1694 | else | |
1695 | { | |
1696 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1697 | symtab_hdr->sh_link, | |
1698 | sym->st_name); | |
1699 | if (name == NULL) | |
1700 | return false; | |
1701 | if (*name == '\0') | |
1702 | name = bfd_section_name (input_bfd, sec); | |
1703 | } | |
1704 | if (! ((*info->callbacks->reloc_overflow) | |
1705 | (info, name, howto->name, (bfd_vma) 0, | |
1706 | input_bfd, input_section, rel->r_offset))) | |
1707 | return false; | |
1708 | } | |
1709 | break; | |
1710 | } | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | return true; | |
1715 | } | |
1716 | ||
1717 | /* Finish up dynamic symbol handling. We set the contents of various | |
1718 | dynamic sections here. */ | |
1719 | ||
1720 | static boolean | |
1721 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) | |
1722 | bfd *output_bfd; | |
1723 | struct bfd_link_info *info; | |
1724 | struct elf_link_hash_entry *h; | |
1725 | Elf_Internal_Sym *sym; | |
1726 | { | |
1727 | bfd *dynobj; | |
1728 | ||
1729 | dynobj = elf_hash_table (info)->dynobj; | |
1730 | ||
1731 | if (h->plt.offset != (bfd_vma) -1) | |
1732 | { | |
1733 | asection *splt; | |
1734 | asection *srela; | |
1735 | Elf_Internal_Rela rela; | |
1736 | ||
1737 | /* This symbol has an entry in the procedure linkage table. Set | |
1738 | it up. */ | |
1739 | ||
1740 | BFD_ASSERT (h->dynindx != -1); | |
1741 | ||
1742 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1743 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1744 | BFD_ASSERT (splt != NULL && srela != NULL); | |
1745 | ||
1746 | /* Fill in the entry in the procedure linkage table. */ | |
1747 | bfd_put_32 (output_bfd, | |
1748 | PLT_ENTRY_WORD0 + h->plt.offset, | |
1749 | splt->contents + h->plt.offset); | |
1750 | bfd_put_32 (output_bfd, | |
1751 | (PLT_ENTRY_WORD1 | |
1752 | + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)), | |
1753 | splt->contents + h->plt.offset + 4); | |
1754 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, | |
1755 | splt->contents + h->plt.offset + 8); | |
1756 | ||
1757 | /* Fill in the entry in the .rela.plt section. */ | |
1758 | rela.r_offset = (splt->output_section->vma | |
1759 | + splt->output_offset | |
1760 | + h->plt.offset); | |
1761 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); | |
1762 | rela.r_addend = 0; | |
1763 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1764 | ((Elf32_External_Rela *) srela->contents | |
1765 | + h->plt.offset / PLT_ENTRY_SIZE - 4)); | |
1766 | ||
1767 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1768 | { | |
1769 | /* Mark the symbol as undefined, rather than as defined in | |
1770 | the .plt section. Leave the value alone. */ | |
1771 | sym->st_shndx = SHN_UNDEF; | |
8701c1bc JJ |
1772 | /* If the symbol is weak, we do need to clear the value. |
1773 | Otherwise, the PLT entry would provide a definition for | |
1774 | the symbol even if the symbol wasn't defined anywhere, | |
1775 | and so the symbol would never be NULL. */ | |
1776 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) | |
1777 | == 0) | |
1778 | sym->st_value = 0; | |
252b5132 RH |
1779 | } |
1780 | } | |
1781 | ||
1782 | if (h->got.offset != (bfd_vma) -1) | |
1783 | { | |
1784 | asection *sgot; | |
1785 | asection *srela; | |
1786 | Elf_Internal_Rela rela; | |
1787 | ||
1788 | /* This symbol has an entry in the global offset table. Set it | |
1789 | up. */ | |
1790 | ||
1791 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1792 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1793 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1794 | ||
1795 | rela.r_offset = (sgot->output_section->vma | |
1796 | + sgot->output_offset | |
1797 | + (h->got.offset &~ 1)); | |
1798 | ||
1799 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1800 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1801 | the symbol was forced to be local because of a version file. | |
1802 | The entry in the global offset table will already have been | |
1803 | initialized in the relocate_section function. */ | |
1804 | if (info->shared | |
1805 | && (info->symbolic || h->dynindx == -1) | |
1806 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
1807 | rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1808 | else | |
1809 | { | |
1810 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
1811 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); | |
1812 | } | |
1813 | ||
1814 | rela.r_addend = 0; | |
1815 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1816 | ((Elf32_External_Rela *) srela->contents | |
1817 | + srela->reloc_count)); | |
1818 | ++srela->reloc_count; | |
1819 | } | |
1820 | ||
1821 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1822 | { | |
1823 | asection *s; | |
1824 | Elf_Internal_Rela rela; | |
1825 | ||
1826 | /* This symbols needs a copy reloc. Set it up. */ | |
1827 | ||
1828 | BFD_ASSERT (h->dynindx != -1); | |
1829 | ||
1830 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1831 | ".rela.bss"); | |
1832 | BFD_ASSERT (s != NULL); | |
1833 | ||
1834 | rela.r_offset = (h->root.u.def.value | |
1835 | + h->root.u.def.section->output_section->vma | |
1836 | + h->root.u.def.section->output_offset); | |
1837 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); | |
1838 | rela.r_addend = 0; | |
1839 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1840 | ((Elf32_External_Rela *) s->contents | |
1841 | + s->reloc_count)); | |
1842 | ++s->reloc_count; | |
1843 | } | |
1844 | ||
1845 | /* Mark some specially defined symbols as absolute. */ | |
1846 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1847 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
1848 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
1849 | sym->st_shndx = SHN_ABS; | |
1850 | ||
1851 | return true; | |
1852 | } | |
1853 | ||
1854 | /* Finish up the dynamic sections. */ | |
1855 | ||
1856 | static boolean | |
1857 | elf32_sparc_finish_dynamic_sections (output_bfd, info) | |
1858 | bfd *output_bfd; | |
1859 | struct bfd_link_info *info; | |
1860 | { | |
1861 | bfd *dynobj; | |
1862 | asection *sdyn; | |
1863 | asection *sgot; | |
1864 | ||
1865 | dynobj = elf_hash_table (info)->dynobj; | |
1866 | ||
1867 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1868 | ||
1869 | if (elf_hash_table (info)->dynamic_sections_created) | |
1870 | { | |
1871 | asection *splt; | |
1872 | Elf32_External_Dyn *dyncon, *dynconend; | |
1873 | ||
1874 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1875 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1876 | ||
1877 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1878 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1879 | for (; dyncon < dynconend; dyncon++) | |
1880 | { | |
1881 | Elf_Internal_Dyn dyn; | |
1882 | const char *name; | |
1883 | boolean size; | |
1884 | ||
1885 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1886 | ||
1887 | switch (dyn.d_tag) | |
1888 | { | |
1889 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
1890 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
1891 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
1892 | default: name = NULL; size = false; break; | |
1893 | } | |
1894 | ||
1895 | if (name != NULL) | |
1896 | { | |
1897 | asection *s; | |
1898 | ||
1899 | s = bfd_get_section_by_name (output_bfd, name); | |
1900 | if (s == NULL) | |
1901 | dyn.d_un.d_val = 0; | |
1902 | else | |
1903 | { | |
1904 | if (! size) | |
1905 | dyn.d_un.d_ptr = s->vma; | |
1906 | else | |
1907 | { | |
1908 | if (s->_cooked_size != 0) | |
1909 | dyn.d_un.d_val = s->_cooked_size; | |
1910 | else | |
1911 | dyn.d_un.d_val = s->_raw_size; | |
1912 | } | |
1913 | } | |
1914 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | /* Clear the first four entries in the procedure linkage table, | |
1919 | and put a nop in the last four bytes. */ | |
1920 | if (splt->_raw_size > 0) | |
1921 | { | |
1922 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); | |
1923 | bfd_put_32 (output_bfd, SPARC_NOP, | |
1924 | splt->contents + splt->_raw_size - 4); | |
1925 | } | |
1926 | ||
1927 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1928 | PLT_ENTRY_SIZE; | |
1929 | } | |
1930 | ||
1931 | /* Set the first entry in the global offset table to the address of | |
1932 | the dynamic section. */ | |
1933 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1934 | BFD_ASSERT (sgot != NULL); | |
1935 | if (sgot->_raw_size > 0) | |
1936 | { | |
1937 | if (sdyn == NULL) | |
1938 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1939 | else | |
1940 | bfd_put_32 (output_bfd, | |
1941 | sdyn->output_section->vma + sdyn->output_offset, | |
1942 | sgot->contents); | |
1943 | } | |
1944 | ||
1945 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1946 | ||
252b5132 RH |
1947 | return true; |
1948 | } | |
1949 | \f | |
1950 | /* Functions for dealing with the e_flags field. | |
1951 | ||
1952 | We don't define set_private_flags or copy_private_bfd_data because | |
1953 | the only currently defined values are based on the bfd mach number, | |
1954 | so we use the latter instead and defer setting e_flags until the | |
1955 | file is written out. */ | |
1956 | ||
1957 | /* Merge backend specific data from an object file to the output | |
1958 | object file when linking. */ | |
1959 | ||
1960 | static boolean | |
1961 | elf32_sparc_merge_private_bfd_data (ibfd, obfd) | |
1962 | bfd *ibfd; | |
1963 | bfd *obfd; | |
1964 | { | |
1965 | boolean error; | |
5f771d47 ILT |
1966 | /* FIXME: This should not be static. */ |
1967 | static unsigned long previous_ibfd_e_flags = (unsigned long) -1; | |
252b5132 RH |
1968 | |
1969 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1970 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1971 | return true; | |
1972 | ||
1973 | error = false; | |
1974 | ||
252b5132 RH |
1975 | if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9) |
1976 | { | |
1977 | error = true; | |
1978 | (*_bfd_error_handler) | |
1979 | (_("%s: compiled for a 64 bit system and target is 32 bit"), | |
1980 | bfd_get_filename (ibfd)); | |
1981 | } | |
37fb6db1 ILT |
1982 | else if ((ibfd->flags & DYNAMIC) == 0) |
1983 | { | |
1984 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
1985 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); | |
1986 | } | |
252b5132 RH |
1987 | |
1988 | if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) | |
1989 | != previous_ibfd_e_flags) | |
5f771d47 | 1990 | && previous_ibfd_e_flags != (unsigned long) -1) |
252b5132 RH |
1991 | { |
1992 | (*_bfd_error_handler) | |
1993 | (_("%s: linking little endian files with big endian files"), | |
1994 | bfd_get_filename (ibfd)); | |
1995 | error = true; | |
1996 | } | |
1997 | previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; | |
1998 | ||
1999 | if (error) | |
2000 | { | |
2001 | bfd_set_error (bfd_error_bad_value); | |
2002 | return false; | |
2003 | } | |
2004 | ||
2005 | return true; | |
2006 | } | |
2007 | \f | |
2008 | /* Set the right machine number. */ | |
2009 | ||
2010 | static boolean | |
2011 | elf32_sparc_object_p (abfd) | |
2012 | bfd *abfd; | |
2013 | { | |
2014 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) | |
2015 | { | |
19f7b010 JJ |
2016 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
2017 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2018 | bfd_mach_sparc_v8plusb); | |
2019 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
252b5132 RH |
2020 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
2021 | bfd_mach_sparc_v8plusa); | |
2022 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) | |
2023 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2024 | bfd_mach_sparc_v8plus); | |
2025 | else | |
2026 | return false; | |
2027 | } | |
2028 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) | |
2029 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
20278fa3 | 2030 | bfd_mach_sparc_sparclite_le); |
252b5132 RH |
2031 | else |
2032 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); | |
2033 | } | |
2034 | ||
2035 | /* The final processing done just before writing out the object file. | |
2036 | We need to set the e_machine field appropriately. */ | |
2037 | ||
2038 | static void | |
2039 | elf32_sparc_final_write_processing (abfd, linker) | |
2040 | bfd *abfd; | |
5f771d47 | 2041 | boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
2042 | { |
2043 | switch (bfd_get_mach (abfd)) | |
2044 | { | |
2045 | case bfd_mach_sparc : | |
2046 | break; /* nothing to do */ | |
2047 | case bfd_mach_sparc_v8plus : | |
2048 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2049 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2050 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; | |
2051 | break; | |
2052 | case bfd_mach_sparc_v8plusa : | |
2053 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2054 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2055 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; | |
2056 | break; | |
19f7b010 JJ |
2057 | case bfd_mach_sparc_v8plusb : |
2058 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2059 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2060 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 | |
2061 | | EF_SPARC_SUN_US3; | |
2062 | break; | |
252b5132 RH |
2063 | case bfd_mach_sparc_sparclite_le : |
2064 | elf_elfheader (abfd)->e_machine = EM_SPARC; | |
2065 | elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; | |
2066 | break; | |
2067 | default : | |
2068 | abort (); | |
2069 | break; | |
2070 | } | |
2071 | } | |
db6751f2 JJ |
2072 | |
2073 | static enum elf_reloc_type_class | |
2074 | elf32_sparc_reloc_type_class (type) | |
2075 | int type; | |
2076 | { | |
2077 | switch (type) | |
2078 | { | |
2079 | case R_SPARC_RELATIVE: | |
2080 | return reloc_class_relative; | |
2081 | case R_SPARC_JMP_SLOT: | |
2082 | return reloc_class_plt; | |
2083 | case R_SPARC_COPY: | |
2084 | return reloc_class_copy; | |
2085 | default: | |
2086 | return reloc_class_normal; | |
2087 | } | |
2088 | } | |
252b5132 RH |
2089 | \f |
2090 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec | |
2091 | #define TARGET_BIG_NAME "elf32-sparc" | |
2092 | #define ELF_ARCH bfd_arch_sparc | |
2093 | #define ELF_MACHINE_CODE EM_SPARC | |
2094 | #define ELF_MACHINE_ALT1 EM_SPARC32PLUS | |
2095 | #define ELF_MAXPAGESIZE 0x10000 | |
2096 | ||
2097 | #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup | |
f7775d95 | 2098 | #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section |
252b5132 RH |
2099 | #define elf_info_to_howto elf32_sparc_info_to_howto |
2100 | #define elf_backend_create_dynamic_sections \ | |
2101 | _bfd_elf_create_dynamic_sections | |
2102 | #define elf_backend_check_relocs elf32_sparc_check_relocs | |
2103 | #define elf_backend_adjust_dynamic_symbol \ | |
2104 | elf32_sparc_adjust_dynamic_symbol | |
2105 | #define elf_backend_size_dynamic_sections \ | |
2106 | elf32_sparc_size_dynamic_sections | |
2107 | #define elf_backend_relocate_section elf32_sparc_relocate_section | |
2108 | #define elf_backend_finish_dynamic_symbol \ | |
2109 | elf32_sparc_finish_dynamic_symbol | |
2110 | #define elf_backend_finish_dynamic_sections \ | |
2111 | elf32_sparc_finish_dynamic_sections | |
2112 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2113 | elf32_sparc_merge_private_bfd_data | |
2114 | #define elf_backend_object_p elf32_sparc_object_p | |
2115 | #define elf_backend_final_write_processing \ | |
2116 | elf32_sparc_final_write_processing | |
2117 | #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook | |
2118 | #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook | |
db6751f2 | 2119 | #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class |
252b5132 RH |
2120 | |
2121 | #define elf_backend_can_gc_sections 1 | |
2122 | #define elf_backend_want_got_plt 0 | |
2123 | #define elf_backend_plt_readonly 0 | |
2124 | #define elf_backend_want_plt_sym 1 | |
2125 | #define elf_backend_got_header_size 4 | |
2126 | #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE) | |
2127 | ||
2128 | #include "elf32-target.h" |