Commit | Line | Data |
---|---|---|
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 | 55 | static enum elf_reloc_type_class elf32_sparc_reloc_type_class |
f51e552e | 56 | PARAMS ((const Elf_Internal_Rela *)); |
917583ad NC |
57 | static asection * elf32_sparc_gc_mark_hook |
58 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
59 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
60 | static boolean elf32_sparc_gc_sweep_hook | |
61 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
62 | const Elf_Internal_Rela *)); | |
252b5132 RH |
63 | \f |
64 | /* The relocation "howto" table. */ | |
65 | ||
66 | static bfd_reloc_status_type sparc_elf_notsupported_reloc | |
67 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
68 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
69 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
70 | ||
71 | reloc_howto_type _bfd_sparc_elf_howto_table[] = | |
72 | { | |
73 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
74 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), | |
75 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), | |
76 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), | |
77 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), | |
78 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), | |
bd5e6e7e | 79 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0xffffffff,true), |
252b5132 RH |
80 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), |
81 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), | |
82 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), | |
83 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), | |
84 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), | |
85 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), | |
86 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), | |
87 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), | |
88 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), | |
89 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), | |
90 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), | |
91 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), | |
92 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), | |
93 | 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), | |
94 | 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), | |
95 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), | |
9fc54e19 | 96 | HOWTO(R_SPARC_UA32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true), |
bd5e6e7e | 97 | HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", false,0,0xffffffff,true), |
252b5132 RH |
98 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), |
99 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), | |
100 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), | |
101 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), | |
102 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), | |
103 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), | |
104 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), | |
105 | /* These are for sparc64 in a 64 bit environment. | |
106 | Values need to be here because the table is indexed by reloc number. */ | |
107 | HOWTO(R_SPARC_64, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", false,0,0x00000000,true), | |
108 | HOWTO(R_SPARC_OLO10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", false,0,0x00000000,true), | |
109 | HOWTO(R_SPARC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", false,0,0x00000000,true), | |
110 | HOWTO(R_SPARC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", false,0,0x00000000,true), | |
111 | HOWTO(R_SPARC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", false,0,0x00000000,true), | |
112 | 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), | |
113 | 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), | |
114 | 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), | |
115 | /* End sparc64 in 64 bit environment values. | |
116 | The following are for sparc64 in a 32 bit environment. */ | |
117 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), | |
118 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), | |
119 | 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), | |
120 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), | |
121 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), | |
122 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,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), | |
125 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
126 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
127 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
128 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
129 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
130 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
20278fa3 | 131 | 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 |
132 | HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true), |
133 | 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 |
134 | }; |
135 | static reloc_howto_type elf32_sparc_vtinherit_howto = | |
136 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", false,0, 0, false); | |
137 | static reloc_howto_type elf32_sparc_vtentry_howto = | |
138 | 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); | |
139 | ||
252b5132 RH |
140 | struct elf_reloc_map { |
141 | bfd_reloc_code_real_type bfd_reloc_val; | |
142 | unsigned char elf_reloc_val; | |
143 | }; | |
144 | ||
dc810e39 | 145 | static const struct elf_reloc_map sparc_reloc_map[] = |
252b5132 RH |
146 | { |
147 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
148 | { BFD_RELOC_16, R_SPARC_16, }, | |
bd5e6e7e | 149 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, |
252b5132 RH |
150 | { BFD_RELOC_8, R_SPARC_8 }, |
151 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
152 | { BFD_RELOC_CTOR, R_SPARC_32 }, | |
153 | { BFD_RELOC_32, R_SPARC_32 }, | |
154 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
155 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
156 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
157 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
bd5e6e7e | 158 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, |
252b5132 RH |
159 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
160 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
161 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
162 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
163 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
164 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
165 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
166 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
167 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
168 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
169 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
170 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
171 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
0f2712ed NC |
172 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
173 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, | |
174 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, | |
175 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, | |
176 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, | |
177 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, | |
178 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, | |
179 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, | |
180 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, | |
181 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, | |
182 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, | |
183 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, | |
184 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, | |
185 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, | |
186 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, | |
187 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, | |
188 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, | |
189 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, | |
190 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, | |
191 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, | |
192 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, | |
252b5132 RH |
193 | }; |
194 | ||
195 | static reloc_howto_type * | |
196 | elf32_sparc_reloc_type_lookup (abfd, code) | |
5f771d47 | 197 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
198 | bfd_reloc_code_real_type code; |
199 | { | |
200 | unsigned int i; | |
435b1e90 | 201 | |
252b5132 RH |
202 | switch (code) |
203 | { | |
204 | case BFD_RELOC_VTABLE_INHERIT: | |
205 | return &elf32_sparc_vtinherit_howto; | |
206 | ||
207 | case BFD_RELOC_VTABLE_ENTRY: | |
208 | return &elf32_sparc_vtentry_howto; | |
209 | ||
210 | default: | |
211 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
212 | { | |
213 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
214 | return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
215 | } | |
216 | } | |
217 | bfd_set_error (bfd_error_bad_value); | |
218 | return NULL; | |
219 | } | |
220 | ||
221 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, | |
222 | and elf64-sparc.c has its own copy. */ | |
223 | ||
224 | static void | |
225 | elf32_sparc_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 226 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
227 | arelent *cache_ptr; |
228 | Elf_Internal_Rela *dst; | |
229 | { | |
60dac299 RH |
230 | switch (ELF32_R_TYPE(dst->r_info)) |
231 | { | |
232 | case R_SPARC_GNU_VTINHERIT: | |
233 | cache_ptr->howto = &elf32_sparc_vtinherit_howto; | |
234 | break; | |
235 | ||
236 | case R_SPARC_GNU_VTENTRY: | |
237 | cache_ptr->howto = &elf32_sparc_vtentry_howto; | |
238 | break; | |
239 | ||
240 | default: | |
241 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); | |
242 | cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
243 | } | |
252b5132 RH |
244 | } |
245 | \f | |
246 | /* For unsupported relocs. */ | |
247 | ||
248 | static bfd_reloc_status_type | |
249 | sparc_elf_notsupported_reloc (abfd, | |
250 | reloc_entry, | |
251 | symbol, | |
252 | data, | |
253 | input_section, | |
254 | output_bfd, | |
255 | error_message) | |
5f771d47 ILT |
256 | bfd *abfd ATTRIBUTE_UNUSED; |
257 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
258 | asymbol *symbol ATTRIBUTE_UNUSED; | |
259 | PTR data ATTRIBUTE_UNUSED; | |
260 | asection *input_section ATTRIBUTE_UNUSED; | |
261 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
262 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
263 | { |
264 | return bfd_reloc_notsupported; | |
265 | } | |
266 | ||
267 | /* Handle the WDISP16 reloc. */ | |
268 | ||
269 | static bfd_reloc_status_type | |
270 | sparc_elf_wdisp16_reloc (abfd, | |
271 | reloc_entry, | |
272 | symbol, | |
273 | data, | |
274 | input_section, | |
275 | output_bfd, | |
276 | error_message) | |
277 | bfd *abfd; | |
278 | arelent *reloc_entry; | |
279 | asymbol *symbol; | |
280 | PTR data; | |
281 | asection *input_section; | |
282 | bfd *output_bfd; | |
5f771d47 | 283 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
284 | { |
285 | bfd_vma relocation; | |
286 | bfd_vma x; | |
287 | ||
288 | if (output_bfd != (bfd *) NULL | |
289 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
290 | && (! reloc_entry->howto->partial_inplace | |
291 | || reloc_entry->addend == 0)) | |
292 | { | |
293 | reloc_entry->address += input_section->output_offset; | |
294 | return bfd_reloc_ok; | |
295 | } | |
296 | ||
297 | if (output_bfd != NULL) | |
298 | return bfd_reloc_continue; | |
299 | ||
300 | if (reloc_entry->address > input_section->_cooked_size) | |
301 | return bfd_reloc_outofrange; | |
302 | ||
303 | relocation = (symbol->value | |
304 | + symbol->section->output_section->vma | |
305 | + symbol->section->output_offset); | |
306 | relocation += reloc_entry->addend; | |
307 | relocation -= (input_section->output_section->vma | |
308 | + input_section->output_offset); | |
309 | relocation -= reloc_entry->address; | |
310 | ||
311 | x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
312 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
313 | | ((relocation >> 2) & 0x3fff)); | |
314 | bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); | |
315 | ||
316 | if ((bfd_signed_vma) relocation < - 0x40000 | |
317 | || (bfd_signed_vma) relocation > 0x3ffff) | |
318 | return bfd_reloc_overflow; | |
319 | else | |
320 | return bfd_reloc_ok; | |
321 | } | |
322 | \f | |
323 | /* Functions for the SPARC ELF linker. */ | |
324 | ||
325 | /* The name of the dynamic interpreter. This is put in the .interp | |
326 | section. */ | |
327 | ||
328 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
329 | ||
330 | /* The nop opcode we use. */ | |
331 | ||
332 | #define SPARC_NOP 0x01000000 | |
333 | ||
334 | /* The size in bytes of an entry in the procedure linkage table. */ | |
335 | ||
336 | #define PLT_ENTRY_SIZE 12 | |
337 | ||
338 | /* The first four entries in a procedure linkage table are reserved, | |
339 | and the initial contents are unimportant (we zero them out). | |
340 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
341 | supplement to see how this works. */ | |
342 | ||
343 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
344 | #define PLT_ENTRY_WORD0 0x03000000 | |
345 | /* b,a .plt0. We fill in the offset later. */ | |
346 | #define PLT_ENTRY_WORD1 0x30800000 | |
347 | /* nop. */ | |
348 | #define PLT_ENTRY_WORD2 SPARC_NOP | |
349 | ||
350 | /* Look through the relocs for a section during the first phase, and | |
351 | allocate space in the global offset table or procedure linkage | |
352 | table. */ | |
353 | ||
354 | static boolean | |
355 | elf32_sparc_check_relocs (abfd, info, sec, relocs) | |
356 | bfd *abfd; | |
357 | struct bfd_link_info *info; | |
358 | asection *sec; | |
359 | const Elf_Internal_Rela *relocs; | |
360 | { | |
361 | bfd *dynobj; | |
362 | Elf_Internal_Shdr *symtab_hdr; | |
363 | struct elf_link_hash_entry **sym_hashes; | |
364 | bfd_vma *local_got_offsets; | |
365 | const Elf_Internal_Rela *rel; | |
366 | const Elf_Internal_Rela *rel_end; | |
367 | asection *sgot; | |
368 | asection *srelgot; | |
369 | asection *sreloc; | |
370 | ||
371 | if (info->relocateable) | |
372 | return true; | |
373 | ||
374 | dynobj = elf_hash_table (info)->dynobj; | |
375 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
376 | sym_hashes = elf_sym_hashes (abfd); | |
377 | local_got_offsets = elf_local_got_offsets (abfd); | |
378 | ||
379 | sgot = NULL; | |
380 | srelgot = NULL; | |
381 | sreloc = NULL; | |
382 | ||
383 | rel_end = relocs + sec->reloc_count; | |
384 | for (rel = relocs; rel < rel_end; rel++) | |
385 | { | |
386 | unsigned long r_symndx; | |
387 | struct elf_link_hash_entry *h; | |
388 | ||
389 | r_symndx = ELF32_R_SYM (rel->r_info); | |
390 | if (r_symndx < symtab_hdr->sh_info) | |
391 | h = NULL; | |
392 | else | |
393 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
394 | ||
395 | switch (ELF32_R_TYPE (rel->r_info)) | |
396 | { | |
397 | case R_SPARC_GOT10: | |
398 | case R_SPARC_GOT13: | |
399 | case R_SPARC_GOT22: | |
400 | /* This symbol requires a global offset table entry. */ | |
401 | ||
402 | if (dynobj == NULL) | |
403 | { | |
404 | /* Create the .got section. */ | |
405 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
406 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
407 | return false; | |
408 | } | |
409 | ||
410 | if (sgot == NULL) | |
411 | { | |
412 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
413 | BFD_ASSERT (sgot != NULL); | |
414 | } | |
415 | ||
416 | if (srelgot == NULL | |
417 | && (h != NULL || info->shared)) | |
418 | { | |
419 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
420 | if (srelgot == NULL) | |
421 | { | |
422 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
423 | if (srelgot == NULL | |
424 | || ! bfd_set_section_flags (dynobj, srelgot, | |
425 | (SEC_ALLOC | |
426 | | SEC_LOAD | |
427 | | SEC_HAS_CONTENTS | |
428 | | SEC_IN_MEMORY | |
429 | | SEC_LINKER_CREATED | |
430 | | SEC_READONLY)) | |
431 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
432 | return false; | |
433 | } | |
434 | } | |
435 | ||
436 | if (h != NULL) | |
437 | { | |
438 | if (h->got.offset != (bfd_vma) -1) | |
439 | { | |
440 | /* We have already allocated space in the .got. */ | |
441 | break; | |
442 | } | |
443 | h->got.offset = sgot->_raw_size; | |
444 | ||
445 | /* Make sure this symbol is output as a dynamic symbol. */ | |
446 | if (h->dynindx == -1) | |
447 | { | |
448 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
449 | return false; | |
450 | } | |
451 | ||
452 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
453 | } | |
454 | else | |
455 | { | |
456 | /* This is a global offset table entry for a local | |
457 | symbol. */ | |
458 | if (local_got_offsets == NULL) | |
459 | { | |
dc810e39 | 460 | bfd_size_type size; |
252b5132 RH |
461 | register unsigned int i; |
462 | ||
dc810e39 AM |
463 | size = symtab_hdr->sh_info; |
464 | size *= sizeof (bfd_vma); | |
252b5132 RH |
465 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); |
466 | if (local_got_offsets == NULL) | |
467 | return false; | |
468 | elf_local_got_offsets (abfd) = local_got_offsets; | |
469 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
470 | local_got_offsets[i] = (bfd_vma) -1; | |
471 | } | |
472 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
473 | { | |
474 | /* We have already allocated space in the .got. */ | |
475 | break; | |
476 | } | |
477 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
478 | ||
479 | if (info->shared) | |
480 | { | |
481 | /* If we are generating a shared object, we need to | |
482 | output a R_SPARC_RELATIVE reloc so that the | |
483 | dynamic linker can adjust this GOT entry. */ | |
484 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
485 | } | |
486 | } | |
487 | ||
488 | sgot->_raw_size += 4; | |
489 | ||
490 | /* If the .got section is more than 0x1000 bytes, we add | |
491 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
492 | bit relocations have a greater chance of working. */ | |
493 | if (sgot->_raw_size >= 0x1000 | |
494 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
495 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
496 | ||
497 | break; | |
498 | ||
bd5e6e7e | 499 | case R_SPARC_PLT32: |
252b5132 RH |
500 | case R_SPARC_WPLT30: |
501 | /* This symbol requires a procedure linkage table entry. We | |
502 | actually build the entry in adjust_dynamic_symbol, | |
503 | because this might be a case of linking PIC code without | |
504 | linking in any dynamic objects, in which case we don't | |
505 | need to generate a procedure linkage table after all. */ | |
506 | ||
507 | if (h == NULL) | |
508 | { | |
509 | /* The Solaris native assembler will generate a WPLT30 | |
510 | reloc for a local symbol if you assemble a call from | |
511 | one section to another when using -K pic. We treat | |
512 | it as WDISP30. */ | |
bd5e6e7e JJ |
513 | if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30) |
514 | goto r_sparc_plt32; | |
252b5132 RH |
515 | break; |
516 | } | |
517 | ||
518 | /* Make sure this symbol is output as a dynamic symbol. */ | |
519 | if (h->dynindx == -1) | |
520 | { | |
521 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
522 | return false; | |
523 | } | |
524 | ||
525 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
526 | ||
bd5e6e7e JJ |
527 | if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30) |
528 | goto r_sparc_plt32; | |
252b5132 RH |
529 | break; |
530 | ||
531 | case R_SPARC_PC10: | |
532 | case R_SPARC_PC22: | |
7843f00e ILT |
533 | if (h != NULL) |
534 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
535 | ||
252b5132 RH |
536 | if (h != NULL |
537 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
538 | break; | |
539 | /* Fall through. */ | |
540 | case R_SPARC_DISP8: | |
541 | case R_SPARC_DISP16: | |
542 | case R_SPARC_DISP32: | |
543 | case R_SPARC_WDISP30: | |
544 | case R_SPARC_WDISP22: | |
545 | case R_SPARC_WDISP19: | |
546 | case R_SPARC_WDISP16: | |
7843f00e ILT |
547 | if (h != NULL) |
548 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
549 | ||
252b5132 RH |
550 | /* If we are linking with -Bsymbolic, we do not need to copy |
551 | a PC relative reloc against a global symbol which is | |
552 | defined in an object we are including in the link (i.e., | |
553 | DEF_REGULAR is set). FIXME: At this point we have not | |
554 | seen all the input files, so it is possible that | |
555 | DEF_REGULAR is not set now but will be set later (it is | |
556 | never cleared). This needs to be handled as in | |
557 | elf32-i386.c. */ | |
558 | if (h == NULL | |
559 | || (info->symbolic | |
560 | && (h->elf_link_hash_flags | |
561 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
562 | break; | |
563 | /* Fall through. */ | |
564 | case R_SPARC_8: | |
565 | case R_SPARC_16: | |
566 | case R_SPARC_32: | |
567 | case R_SPARC_HI22: | |
568 | case R_SPARC_22: | |
569 | case R_SPARC_13: | |
570 | case R_SPARC_LO10: | |
0f2712ed | 571 | case R_SPARC_UA16: |
252b5132 | 572 | case R_SPARC_UA32: |
7843f00e ILT |
573 | if (h != NULL) |
574 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
575 | ||
bd5e6e7e | 576 | r_sparc_plt32: |
20278fa3 | 577 | if (info->shared && (sec->flags & SEC_ALLOC)) |
252b5132 RH |
578 | { |
579 | /* When creating a shared object, we must copy these | |
580 | relocs into the output file. We create a reloc | |
581 | section in dynobj and make room for the reloc. */ | |
582 | if (sreloc == NULL) | |
583 | { | |
584 | const char *name; | |
585 | ||
586 | name = (bfd_elf_string_from_elf_section | |
587 | (abfd, | |
588 | elf_elfheader (abfd)->e_shstrndx, | |
589 | elf_section_data (sec)->rel_hdr.sh_name)); | |
590 | if (name == NULL) | |
591 | return false; | |
592 | ||
593 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
594 | && strcmp (bfd_get_section_name (abfd, sec), | |
595 | name + 5) == 0); | |
596 | ||
597 | sreloc = bfd_get_section_by_name (dynobj, name); | |
598 | if (sreloc == NULL) | |
599 | { | |
600 | flagword flags; | |
601 | ||
602 | sreloc = bfd_make_section (dynobj, name); | |
603 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
604 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
605 | if ((sec->flags & SEC_ALLOC) != 0) | |
606 | flags |= SEC_ALLOC | SEC_LOAD; | |
607 | if (sreloc == NULL | |
608 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
609 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
610 | return false; | |
611 | } | |
db6751f2 JJ |
612 | if (sec->flags & SEC_READONLY) |
613 | info->flags |= DF_TEXTREL; | |
252b5132 RH |
614 | } |
615 | ||
616 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
617 | } | |
618 | ||
619 | break; | |
620 | ||
621 | case R_SPARC_GNU_VTINHERIT: | |
622 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
623 | return false; | |
624 | break; | |
625 | ||
626 | case R_SPARC_GNU_VTENTRY: | |
627 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
628 | return false; | |
629 | break; | |
630 | ||
631 | default: | |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
636 | return true; | |
637 | } | |
638 | ||
639 | static asection * | |
640 | elf32_sparc_gc_mark_hook (abfd, info, rel, h, sym) | |
641 | bfd *abfd; | |
5f771d47 | 642 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
643 | Elf_Internal_Rela *rel; |
644 | struct elf_link_hash_entry *h; | |
645 | Elf_Internal_Sym *sym; | |
646 | { | |
647 | ||
648 | if (h != NULL) | |
649 | { | |
650 | switch (ELF32_R_TYPE (rel->r_info)) | |
651 | { | |
652 | case R_SPARC_GNU_VTINHERIT: | |
653 | case R_SPARC_GNU_VTENTRY: | |
654 | break; | |
655 | ||
656 | default: | |
657 | switch (h->root.type) | |
658 | { | |
659 | case bfd_link_hash_defined: | |
660 | case bfd_link_hash_defweak: | |
661 | return h->root.u.def.section; | |
662 | ||
663 | case bfd_link_hash_common: | |
664 | return h->root.u.c.p->section; | |
e049a0de ILT |
665 | |
666 | default: | |
667 | break; | |
252b5132 RH |
668 | } |
669 | } | |
670 | } | |
671 | else | |
672 | { | |
9ad5cbcf AM |
673 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
674 | } | |
252b5132 RH |
675 | |
676 | return NULL; | |
677 | } | |
678 | ||
679 | /* Update the got entry reference counts for the section being removed. */ | |
680 | static boolean | |
681 | elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs) | |
682 | bfd *abfd; | |
5f771d47 | 683 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
684 | asection *sec; |
685 | const Elf_Internal_Rela *relocs; | |
686 | { | |
687 | ||
688 | Elf_Internal_Shdr *symtab_hdr; | |
689 | struct elf_link_hash_entry **sym_hashes; | |
690 | bfd_signed_vma *local_got_refcounts; | |
691 | const Elf_Internal_Rela *rel, *relend; | |
692 | unsigned long r_symndx; | |
693 | struct elf_link_hash_entry *h; | |
694 | ||
695 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
696 | sym_hashes = elf_sym_hashes (abfd); | |
697 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
698 | ||
699 | relend = relocs + sec->reloc_count; | |
700 | for (rel = relocs; rel < relend; rel++) | |
701 | switch (ELF32_R_TYPE (rel->r_info)) | |
702 | { | |
703 | case R_SPARC_GOT10: | |
704 | case R_SPARC_GOT13: | |
705 | case R_SPARC_GOT22: | |
706 | r_symndx = ELF32_R_SYM (rel->r_info); | |
707 | if (r_symndx >= symtab_hdr->sh_info) | |
708 | { | |
709 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
710 | if (h->got.refcount > 0) | |
711 | h->got.refcount--; | |
712 | } | |
713 | else | |
714 | { | |
715 | if (local_got_refcounts[r_symndx] > 0) | |
716 | local_got_refcounts[r_symndx]--; | |
717 | } | |
718 | break; | |
719 | ||
720 | case R_SPARC_PLT32: | |
721 | case R_SPARC_HIPLT22: | |
722 | case R_SPARC_LOPLT10: | |
723 | case R_SPARC_PCPLT32: | |
724 | case R_SPARC_PCPLT10: | |
725 | r_symndx = ELF32_R_SYM (rel->r_info); | |
726 | if (r_symndx >= symtab_hdr->sh_info) | |
727 | { | |
728 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
729 | if (h->plt.refcount > 0) | |
730 | h->plt.refcount--; | |
731 | } | |
732 | break; | |
733 | ||
734 | default: | |
735 | break; | |
736 | } | |
737 | ||
738 | return true; | |
739 | } | |
740 | ||
741 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
742 | regular object. The current definition is in some section of the | |
743 | dynamic object, but we're not including those sections. We have to | |
744 | change the definition to something the rest of the link can | |
745 | understand. */ | |
746 | ||
747 | static boolean | |
748 | elf32_sparc_adjust_dynamic_symbol (info, h) | |
749 | struct bfd_link_info *info; | |
750 | struct elf_link_hash_entry *h; | |
751 | { | |
752 | bfd *dynobj; | |
753 | asection *s; | |
754 | unsigned int power_of_two; | |
755 | ||
756 | dynobj = elf_hash_table (info)->dynobj; | |
757 | ||
758 | /* Make sure we know what is going on here. */ | |
759 | BFD_ASSERT (dynobj != NULL | |
760 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
761 | || h->weakdef != NULL | |
762 | || ((h->elf_link_hash_flags | |
763 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
764 | && (h->elf_link_hash_flags | |
765 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
766 | && (h->elf_link_hash_flags | |
767 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
768 | ||
769 | /* If this is a function, put it in the procedure linkage table. We | |
770 | will fill in the contents of the procedure linkage table later | |
771 | (although we could actually do it here). The STT_NOTYPE | |
772 | condition is a hack specifically for the Oracle libraries | |
773 | delivered for Solaris; for some inexplicable reason, they define | |
774 | some of their functions as STT_NOTYPE when they really should be | |
775 | STT_FUNC. */ | |
776 | if (h->type == STT_FUNC | |
777 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 | |
778 | || (h->type == STT_NOTYPE | |
779 | && (h->root.type == bfd_link_hash_defined | |
780 | || h->root.type == bfd_link_hash_defweak) | |
781 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
782 | { | |
783 | if (! elf_hash_table (info)->dynamic_sections_created | |
784 | || ((!info->shared || info->symbolic || h->dynindx == -1) | |
785 | && (h->elf_link_hash_flags | |
786 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
787 | { | |
788 | /* This case can occur if we saw a WPLT30 reloc in an input | |
789 | file, but none of the input files were dynamic objects. | |
790 | Or, when linking the main application or a -Bsymbolic | |
791 | shared library against PIC code. Or when a global symbol | |
792 | has been made private, e.g. via versioning. | |
793 | ||
794 | In these cases we know what value the symbol will resolve | |
795 | to, so we don't actually need to build a procedure linkage | |
796 | table, and we can just do a WDISP30 reloc instead. */ | |
797 | ||
798 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
799 | return true; | |
800 | } | |
801 | ||
802 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
803 | BFD_ASSERT (s != NULL); | |
804 | ||
805 | /* The first four entries in .plt are reserved. */ | |
806 | if (s->_raw_size == 0) | |
807 | s->_raw_size = 4 * PLT_ENTRY_SIZE; | |
808 | ||
809 | /* The procedure linkage table has a maximum size. */ | |
810 | if (s->_raw_size >= 0x400000) | |
811 | { | |
812 | bfd_set_error (bfd_error_bad_value); | |
813 | return false; | |
814 | } | |
815 | ||
816 | /* If this symbol is not defined in a regular file, and we are | |
817 | not generating a shared library, then set the symbol to this | |
818 | location in the .plt. This is required to make function | |
819 | pointers compare as equal between the normal executable and | |
820 | the shared library. */ | |
821 | if (! info->shared | |
822 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
823 | { | |
824 | h->root.u.def.section = s; | |
825 | h->root.u.def.value = s->_raw_size; | |
826 | } | |
827 | ||
828 | h->plt.offset = s->_raw_size; | |
829 | ||
830 | /* Make room for this entry. */ | |
831 | s->_raw_size += PLT_ENTRY_SIZE; | |
832 | ||
833 | /* We also need to make an entry in the .rela.plt section. */ | |
834 | ||
835 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
836 | BFD_ASSERT (s != NULL); | |
837 | s->_raw_size += sizeof (Elf32_External_Rela); | |
838 | ||
839 | return true; | |
840 | } | |
841 | ||
842 | /* If this is a weak symbol, and there is a real definition, the | |
843 | processor independent code will have arranged for us to see the | |
844 | real definition first, and we can just use the same value. */ | |
845 | if (h->weakdef != NULL) | |
846 | { | |
847 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
848 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
849 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
850 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
851 | return true; | |
852 | } | |
853 | ||
854 | /* This is a reference to a symbol defined by a dynamic object which | |
855 | is not a function. */ | |
856 | ||
857 | /* If we are creating a shared library, we must presume that the | |
858 | only references to the symbol are via the global offset table. | |
859 | For such cases we need not do anything here; the relocations will | |
860 | be handled correctly by relocate_section. */ | |
861 | if (info->shared) | |
862 | return true; | |
863 | ||
7843f00e ILT |
864 | /* If there are no references to this symbol that do not use the |
865 | GOT, we don't need to generate a copy reloc. */ | |
866 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
867 | return true; | |
868 | ||
252b5132 RH |
869 | /* We must allocate the symbol in our .dynbss section, which will |
870 | become part of the .bss section of the executable. There will be | |
871 | an entry for this symbol in the .dynsym section. The dynamic | |
872 | object will contain position independent code, so all references | |
873 | from the dynamic object to this symbol will go through the global | |
874 | offset table. The dynamic linker will use the .dynsym entry to | |
875 | determine the address it must put in the global offset table, so | |
876 | both the dynamic object and the regular object will refer to the | |
877 | same memory location for the variable. */ | |
878 | ||
879 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
880 | BFD_ASSERT (s != NULL); | |
881 | ||
882 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
883 | to copy the initial value out of the dynamic object and into the | |
884 | runtime process image. We need to remember the offset into the | |
885 | .rel.bss section we are going to use. */ | |
886 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
887 | { | |
888 | asection *srel; | |
889 | ||
890 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
891 | BFD_ASSERT (srel != NULL); | |
892 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
893 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
894 | } | |
895 | ||
896 | /* We need to figure out the alignment required for this symbol. I | |
897 | have no idea how ELF linkers handle this. */ | |
898 | power_of_two = bfd_log2 (h->size); | |
899 | if (power_of_two > 3) | |
900 | power_of_two = 3; | |
901 | ||
902 | /* Apply the required alignment. */ | |
903 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
904 | (bfd_size_type) (1 << power_of_two)); | |
905 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
906 | { | |
907 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
908 | return false; | |
909 | } | |
910 | ||
911 | /* Define the symbol as being at this point in the section. */ | |
912 | h->root.u.def.section = s; | |
913 | h->root.u.def.value = s->_raw_size; | |
914 | ||
915 | /* Increment the section size to make room for the symbol. */ | |
916 | s->_raw_size += h->size; | |
917 | ||
918 | return true; | |
919 | } | |
920 | ||
921 | /* Set the sizes of the dynamic sections. */ | |
922 | ||
923 | static boolean | |
924 | elf32_sparc_size_dynamic_sections (output_bfd, info) | |
db6751f2 | 925 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
926 | struct bfd_link_info *info; |
927 | { | |
928 | bfd *dynobj; | |
929 | asection *s; | |
252b5132 RH |
930 | boolean relplt; |
931 | ||
932 | dynobj = elf_hash_table (info)->dynobj; | |
933 | BFD_ASSERT (dynobj != NULL); | |
934 | ||
935 | if (elf_hash_table (info)->dynamic_sections_created) | |
936 | { | |
937 | /* Set the contents of the .interp section to the interpreter. */ | |
938 | if (! info->shared) | |
939 | { | |
940 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
941 | BFD_ASSERT (s != NULL); | |
942 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
943 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
944 | } | |
945 | ||
946 | /* Make space for the trailing nop in .plt. */ | |
947 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
948 | BFD_ASSERT (s != NULL); | |
949 | if (s->_raw_size > 0) | |
950 | s->_raw_size += 4; | |
951 | } | |
952 | else | |
953 | { | |
954 | /* We may have created entries in the .rela.got section. | |
955 | However, if we are not creating the dynamic sections, we will | |
956 | not actually use these entries. Reset the size of .rela.got, | |
957 | which will cause it to get stripped from the output file | |
958 | below. */ | |
959 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
960 | if (s != NULL) | |
961 | s->_raw_size = 0; | |
962 | } | |
963 | ||
964 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
965 | determined the sizes of the various dynamic sections. Allocate | |
966 | memory for them. */ | |
252b5132 RH |
967 | relplt = false; |
968 | for (s = dynobj->sections; s != NULL; s = s->next) | |
969 | { | |
970 | const char *name; | |
971 | boolean strip; | |
972 | ||
973 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
974 | continue; | |
975 | ||
976 | /* It's OK to base decisions on the section name, because none | |
977 | of the dynobj section names depend upon the input files. */ | |
978 | name = bfd_get_section_name (dynobj, s); | |
979 | ||
980 | strip = false; | |
981 | ||
982 | if (strncmp (name, ".rela", 5) == 0) | |
983 | { | |
984 | if (s->_raw_size == 0) | |
985 | { | |
986 | /* If we don't need this section, strip it from the | |
987 | output file. This is to handle .rela.bss and | |
988 | .rel.plt. We must create it in | |
989 | create_dynamic_sections, because it must be created | |
990 | before the linker maps input sections to output | |
991 | sections. The linker does that before | |
992 | adjust_dynamic_symbol is called, and it is that | |
993 | function which decides whether anything needs to go | |
994 | into these sections. */ | |
995 | strip = true; | |
996 | } | |
997 | else | |
998 | { | |
252b5132 RH |
999 | if (strcmp (name, ".rela.plt") == 0) |
1000 | relplt = true; | |
1001 | ||
1002 | /* We use the reloc_count field as a counter if we need | |
1003 | to copy relocs into the output file. */ | |
1004 | s->reloc_count = 0; | |
1005 | } | |
1006 | } | |
1007 | else if (strcmp (name, ".plt") != 0 | |
1008 | && strcmp (name, ".got") != 0) | |
1009 | { | |
1010 | /* It's not one of our sections, so don't allocate space. */ | |
1011 | continue; | |
1012 | } | |
1013 | ||
1014 | if (strip) | |
1015 | { | |
7f8d5fc9 | 1016 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1017 | continue; |
1018 | } | |
1019 | ||
1020 | /* Allocate memory for the section contents. */ | |
7a9af8c4 NC |
1021 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1022 | Unused entries should be reclaimed before the section's contents | |
1023 | are written out, but at the moment this does not happen. Thus in | |
1024 | order to prevent writing out garbage, we initialise the section's | |
1025 | contents to zero. */ | |
1026 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
252b5132 RH |
1027 | if (s->contents == NULL && s->_raw_size != 0) |
1028 | return false; | |
1029 | } | |
1030 | ||
1031 | if (elf_hash_table (info)->dynamic_sections_created) | |
1032 | { | |
1033 | /* Add some entries to the .dynamic section. We fill in the | |
1034 | values later, in elf32_sparc_finish_dynamic_sections, but we | |
1035 | must add the entries now so that we get the correct size for | |
1036 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1037 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1038 | #define add_dynamic_entry(TAG, VAL) \ |
1039 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1040 | ||
1041 | if (!info->shared) | |
252b5132 | 1042 | { |
dc810e39 | 1043 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
252b5132 RH |
1044 | return false; |
1045 | } | |
1046 | ||
1047 | if (relplt) | |
1048 | { | |
dc810e39 AM |
1049 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1050 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1051 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1052 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
252b5132 RH |
1053 | return false; |
1054 | } | |
1055 | ||
dc810e39 AM |
1056 | if (!add_dynamic_entry (DT_RELA, 0) |
1057 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1058 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
252b5132 RH |
1059 | return false; |
1060 | ||
db6751f2 | 1061 | if (info->flags & DF_TEXTREL) |
252b5132 | 1062 | { |
dc810e39 | 1063 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
252b5132 RH |
1064 | return false; |
1065 | } | |
1066 | } | |
dc810e39 | 1067 | #undef add_dynamic_entry |
252b5132 | 1068 | |
252b5132 RH |
1069 | return true; |
1070 | } | |
1071 | ||
f7775d95 JJ |
1072 | #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0) |
1073 | #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1) | |
1074 | ||
f7775d95 JJ |
1075 | static boolean |
1076 | elf32_sparc_relax_section (abfd, section, link_info, again) | |
1077 | bfd *abfd ATTRIBUTE_UNUSED; | |
1078 | asection *section ATTRIBUTE_UNUSED; | |
1079 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
1080 | boolean *again; | |
1081 | { | |
1082 | *again = false; | |
1083 | SET_SEC_DO_RELAX (section); | |
1084 | return true; | |
1085 | } | |
1086 | ||
252b5132 RH |
1087 | /* Relocate a SPARC ELF section. */ |
1088 | ||
1089 | static boolean | |
1090 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, | |
1091 | contents, relocs, local_syms, local_sections) | |
1092 | bfd *output_bfd; | |
1093 | struct bfd_link_info *info; | |
1094 | bfd *input_bfd; | |
1095 | asection *input_section; | |
1096 | bfd_byte *contents; | |
1097 | Elf_Internal_Rela *relocs; | |
1098 | Elf_Internal_Sym *local_syms; | |
1099 | asection **local_sections; | |
1100 | { | |
1101 | bfd *dynobj; | |
1102 | Elf_Internal_Shdr *symtab_hdr; | |
1103 | struct elf_link_hash_entry **sym_hashes; | |
1104 | bfd_vma *local_got_offsets; | |
1105 | bfd_vma got_base; | |
1106 | asection *sgot; | |
1107 | asection *splt; | |
1108 | asection *sreloc; | |
1109 | Elf_Internal_Rela *rel; | |
1110 | Elf_Internal_Rela *relend; | |
1111 | ||
1112 | dynobj = elf_hash_table (info)->dynobj; | |
1113 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1114 | sym_hashes = elf_sym_hashes (input_bfd); | |
1115 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1116 | ||
1117 | if (elf_hash_table (info)->hgot == NULL) | |
1118 | got_base = 0; | |
1119 | else | |
1120 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1121 | ||
1122 | sgot = NULL; | |
1123 | splt = NULL; | |
1124 | sreloc = NULL; | |
1125 | ||
1126 | rel = relocs; | |
1127 | relend = relocs + input_section->reloc_count; | |
1128 | for (; rel < relend; rel++) | |
1129 | { | |
1130 | int r_type; | |
1131 | reloc_howto_type *howto; | |
1132 | unsigned long r_symndx; | |
1133 | struct elf_link_hash_entry *h; | |
1134 | Elf_Internal_Sym *sym; | |
1135 | asection *sec; | |
1136 | bfd_vma relocation; | |
1137 | bfd_reloc_status_type r; | |
bd5e6e7e | 1138 | boolean is_plt = false; |
252b5132 RH |
1139 | |
1140 | r_type = ELF32_R_TYPE (rel->r_info); | |
1141 | ||
435b1e90 | 1142 | if (r_type == R_SPARC_GNU_VTINHERIT |
252b5132 RH |
1143 | || r_type == R_SPARC_GNU_VTENTRY) |
1144 | continue; | |
1145 | ||
60dac299 | 1146 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1147 | { |
1148 | bfd_set_error (bfd_error_bad_value); | |
1149 | return false; | |
1150 | } | |
1151 | howto = _bfd_sparc_elf_howto_table + r_type; | |
1152 | ||
1153 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1154 | ||
1155 | if (info->relocateable) | |
1156 | { | |
1157 | /* This is a relocateable link. We don't have to change | |
1158 | anything, unless the reloc is against a section symbol, | |
1159 | in which case we have to adjust according to where the | |
1160 | section symbol winds up in the output section. */ | |
1161 | if (r_symndx < symtab_hdr->sh_info) | |
1162 | { | |
1163 | sym = local_syms + r_symndx; | |
1164 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1165 | { | |
1166 | sec = local_sections[r_symndx]; | |
1167 | rel->r_addend += sec->output_offset + sym->st_value; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | continue; | |
1172 | } | |
1173 | ||
1174 | /* This is a final link. */ | |
1175 | h = NULL; | |
1176 | sym = NULL; | |
1177 | sec = NULL; | |
1178 | if (r_symndx < symtab_hdr->sh_info) | |
1179 | { | |
1180 | sym = local_syms + r_symndx; | |
1181 | sec = local_sections[r_symndx]; | |
f8df10f4 | 1182 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
252b5132 RH |
1183 | } |
1184 | else | |
1185 | { | |
1186 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1187 | while (h->root.type == bfd_link_hash_indirect | |
1188 | || h->root.type == bfd_link_hash_warning) | |
1189 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1190 | if (h->root.type == bfd_link_hash_defined | |
1191 | || h->root.type == bfd_link_hash_defweak) | |
1192 | { | |
1193 | sec = h->root.u.def.section; | |
bd5e6e7e JJ |
1194 | if (((r_type == R_SPARC_WPLT30 |
1195 | || r_type == R_SPARC_PLT32) | |
252b5132 RH |
1196 | && h->plt.offset != (bfd_vma) -1) |
1197 | || ((r_type == R_SPARC_GOT10 | |
1198 | || r_type == R_SPARC_GOT13 | |
1199 | || r_type == R_SPARC_GOT22) | |
1200 | && elf_hash_table (info)->dynamic_sections_created | |
1201 | && (! info->shared | |
1202 | || (! info->symbolic && h->dynindx != -1) | |
1203 | || (h->elf_link_hash_flags | |
1204 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1205 | || (info->shared | |
1206 | && ((! info->symbolic && h->dynindx != -1) | |
1207 | || (h->elf_link_hash_flags | |
1208 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1209 | && (r_type == R_SPARC_8 | |
1210 | || r_type == R_SPARC_16 | |
1211 | || r_type == R_SPARC_32 | |
1212 | || r_type == R_SPARC_DISP8 | |
1213 | || r_type == R_SPARC_DISP16 | |
1214 | || r_type == R_SPARC_DISP32 | |
1215 | || r_type == R_SPARC_WDISP30 | |
1216 | || r_type == R_SPARC_WDISP22 | |
1217 | || r_type == R_SPARC_WDISP19 | |
1218 | || r_type == R_SPARC_WDISP16 | |
1219 | || r_type == R_SPARC_HI22 | |
1220 | || r_type == R_SPARC_22 | |
1221 | || r_type == R_SPARC_13 | |
1222 | || r_type == R_SPARC_LO10 | |
0f2712ed | 1223 | || r_type == R_SPARC_UA16 |
252b5132 RH |
1224 | || r_type == R_SPARC_UA32 |
1225 | || ((r_type == R_SPARC_PC10 | |
1226 | || r_type == R_SPARC_PC22) | |
1227 | && strcmp (h->root.root.string, | |
2e549b45 JJ |
1228 | "_GLOBAL_OFFSET_TABLE_") != 0)) |
1229 | && ((input_section->flags & SEC_ALLOC) != 0 | |
1230 | /* DWARF will emit R_SPARC_32 relocations in its | |
1231 | sections against symbols defined externally | |
1232 | in shared libraries. We can't do anything | |
1233 | with them here. */ | |
1234 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
1235 | && (h->elf_link_hash_flags | |
1236 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))) | |
252b5132 RH |
1237 | { |
1238 | /* In these cases, we don't need the relocation | |
1239 | value. We check specially because in some | |
1240 | obscure cases sec->output_section will be NULL. */ | |
1241 | relocation = 0; | |
1242 | } | |
1243 | else | |
1244 | relocation = (h->root.u.def.value | |
1245 | + sec->output_section->vma | |
1246 | + sec->output_offset); | |
1247 | } | |
1248 | else if (h->root.type == bfd_link_hash_undefweak) | |
1249 | relocation = 0; | |
671bae9c NC |
1250 | else if (info->shared |
1251 | && (!info->symbolic || info->allow_shlib_undefined) | |
3a27a730 L |
1252 | && !info->no_undefined |
1253 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
252b5132 RH |
1254 | relocation = 0; |
1255 | else | |
1256 | { | |
1257 | if (! ((*info->callbacks->undefined_symbol) | |
1258 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1259 | input_section, rel->r_offset, |
3a27a730 L |
1260 | (!info->shared || info->no_undefined |
1261 | || ELF_ST_VISIBILITY (h->other))))) | |
252b5132 RH |
1262 | return false; |
1263 | relocation = 0; | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | switch (r_type) | |
1268 | { | |
1269 | case R_SPARC_GOT10: | |
1270 | case R_SPARC_GOT13: | |
1271 | case R_SPARC_GOT22: | |
1272 | /* Relocation is to the entry for this symbol in the global | |
1273 | offset table. */ | |
1274 | if (sgot == NULL) | |
1275 | { | |
1276 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1277 | BFD_ASSERT (sgot != NULL); | |
1278 | } | |
1279 | ||
1280 | if (h != NULL) | |
1281 | { | |
1282 | bfd_vma off; | |
1283 | ||
1284 | off = h->got.offset; | |
1285 | BFD_ASSERT (off != (bfd_vma) -1); | |
1286 | ||
1287 | if (! elf_hash_table (info)->dynamic_sections_created | |
1288 | || (info->shared | |
1289 | && (info->symbolic || h->dynindx == -1) | |
1290 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
1291 | { | |
1292 | /* This is actually a static link, or it is a | |
1293 | -Bsymbolic link and the symbol is defined | |
1294 | locally, or the symbol was forced to be local | |
1295 | because of a version file. We must initialize | |
1296 | this entry in the global offset table. Since the | |
1297 | offset must always be a multiple of 4, we use the | |
1298 | least significant bit to record whether we have | |
1299 | initialized it already. | |
1300 | ||
1301 | When doing a dynamic link, we create a .rela.got | |
1302 | relocation entry to initialize the value. This | |
1303 | is done in the finish_dynamic_symbol routine. */ | |
1304 | if ((off & 1) != 0) | |
1305 | off &= ~1; | |
1306 | else | |
1307 | { | |
1308 | bfd_put_32 (output_bfd, relocation, | |
1309 | sgot->contents + off); | |
1310 | h->got.offset |= 1; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | relocation = sgot->output_offset + off - got_base; | |
1315 | } | |
1316 | else | |
1317 | { | |
1318 | bfd_vma off; | |
1319 | ||
1320 | BFD_ASSERT (local_got_offsets != NULL | |
1321 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1322 | ||
1323 | off = local_got_offsets[r_symndx]; | |
1324 | ||
1325 | /* The offset must always be a multiple of 4. We use | |
1326 | the least significant bit to record whether we have | |
1327 | already processed this entry. */ | |
1328 | if ((off & 1) != 0) | |
1329 | off &= ~1; | |
1330 | else | |
1331 | { | |
1332 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1333 | ||
1334 | if (info->shared) | |
1335 | { | |
1336 | asection *srelgot; | |
1337 | Elf_Internal_Rela outrel; | |
1338 | ||
1339 | /* We need to generate a R_SPARC_RELATIVE reloc | |
1340 | for the dynamic linker. */ | |
1341 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1342 | BFD_ASSERT (srelgot != NULL); | |
1343 | ||
1344 | outrel.r_offset = (sgot->output_section->vma | |
1345 | + sgot->output_offset | |
1346 | + off); | |
1347 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1348 | outrel.r_addend = 0; | |
1349 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1350 | (((Elf32_External_Rela *) | |
1351 | srelgot->contents) | |
1352 | + srelgot->reloc_count)); | |
1353 | ++srelgot->reloc_count; | |
1354 | } | |
1355 | ||
1356 | local_got_offsets[r_symndx] |= 1; | |
1357 | } | |
1358 | ||
1359 | relocation = sgot->output_offset + off - got_base; | |
1360 | } | |
1361 | ||
1362 | break; | |
1363 | ||
bd5e6e7e JJ |
1364 | case R_SPARC_PLT32: |
1365 | if (h == NULL || h->plt.offset == (bfd_vma) -1) | |
1366 | { | |
1367 | r_type = R_SPARC_32; | |
1368 | goto r_sparc_plt32; | |
1369 | } | |
1370 | /* Fall through. */ | |
252b5132 RH |
1371 | case R_SPARC_WPLT30: |
1372 | /* Relocation is to the entry for this symbol in the | |
1373 | procedure linkage table. */ | |
1374 | ||
1375 | /* The Solaris native assembler will generate a WPLT30 reloc | |
1376 | for a local symbol if you assemble a call from one | |
1377 | section to another when using -K pic. We treat it as | |
1378 | WDISP30. */ | |
1379 | if (h == NULL) | |
1380 | break; | |
1381 | ||
1382 | if (h->plt.offset == (bfd_vma) -1) | |
1383 | { | |
1384 | /* We didn't make a PLT entry for this symbol. This | |
1385 | happens when statically linking PIC code, or when | |
1386 | using -Bsymbolic. */ | |
1387 | break; | |
1388 | } | |
1389 | ||
1390 | if (splt == NULL) | |
1391 | { | |
1392 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1393 | BFD_ASSERT (splt != NULL); | |
1394 | } | |
1395 | ||
1396 | relocation = (splt->output_section->vma | |
1397 | + splt->output_offset | |
1398 | + h->plt.offset); | |
bd5e6e7e JJ |
1399 | if (r_type == R_SPARC_PLT32) |
1400 | { | |
1401 | r_type = R_SPARC_32; | |
1402 | is_plt = true; | |
1403 | goto r_sparc_plt32; | |
1404 | } | |
252b5132 RH |
1405 | break; |
1406 | ||
1407 | case R_SPARC_PC10: | |
1408 | case R_SPARC_PC22: | |
1409 | if (h != NULL | |
1410 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1411 | break; | |
1412 | /* Fall through. */ | |
1413 | case R_SPARC_DISP8: | |
1414 | case R_SPARC_DISP16: | |
1415 | case R_SPARC_DISP32: | |
1416 | case R_SPARC_WDISP30: | |
1417 | case R_SPARC_WDISP22: | |
1418 | case R_SPARC_WDISP19: | |
1419 | case R_SPARC_WDISP16: | |
1420 | if (h == NULL | |
1421 | || (info->symbolic | |
1422 | && (h->elf_link_hash_flags | |
1423 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
1424 | break; | |
1425 | /* Fall through. */ | |
1426 | case R_SPARC_8: | |
1427 | case R_SPARC_16: | |
1428 | case R_SPARC_32: | |
1429 | case R_SPARC_HI22: | |
1430 | case R_SPARC_22: | |
1431 | case R_SPARC_13: | |
1432 | case R_SPARC_LO10: | |
0f2712ed | 1433 | case R_SPARC_UA16: |
252b5132 | 1434 | case R_SPARC_UA32: |
bd5e6e7e | 1435 | r_sparc_plt32: |
ec338859 AM |
1436 | if (info->shared |
1437 | && r_symndx != 0 | |
1438 | && (input_section->flags & SEC_ALLOC)) | |
252b5132 RH |
1439 | { |
1440 | Elf_Internal_Rela outrel; | |
0bb2d96a | 1441 | boolean skip, relocate = false; |
252b5132 RH |
1442 | |
1443 | /* When generating a shared object, these relocations | |
1444 | are copied into the output file to be resolved at run | |
1445 | time. */ | |
1446 | ||
1447 | if (sreloc == NULL) | |
1448 | { | |
1449 | const char *name; | |
1450 | ||
1451 | name = (bfd_elf_string_from_elf_section | |
1452 | (input_bfd, | |
1453 | elf_elfheader (input_bfd)->e_shstrndx, | |
1454 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1455 | if (name == NULL) | |
1456 | return false; | |
1457 | ||
1458 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1459 | && strcmp (bfd_get_section_name (input_bfd, | |
1460 | input_section), | |
1461 | name + 5) == 0); | |
1462 | ||
1463 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1464 | BFD_ASSERT (sreloc != NULL); | |
1465 | } | |
1466 | ||
1467 | skip = false; | |
1468 | ||
c629eae0 JJ |
1469 | outrel.r_offset = |
1470 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1471 | rel->r_offset); | |
1472 | if (outrel.r_offset == (bfd_vma) -1) | |
1473 | skip = true; | |
0bb2d96a JJ |
1474 | else if (outrel.r_offset == (bfd_vma) -2) |
1475 | skip = true, relocate = true; | |
252b5132 RH |
1476 | outrel.r_offset += (input_section->output_section->vma |
1477 | + input_section->output_offset); | |
1478 | ||
20278fa3 JJ |
1479 | /* Optimize unaligned reloc usage now that we know where |
1480 | it finally resides. */ | |
1481 | switch (r_type) | |
1482 | { | |
1483 | case R_SPARC_16: | |
1484 | if (outrel.r_offset & 1) | |
1485 | r_type = R_SPARC_UA16; | |
1486 | break; | |
1487 | case R_SPARC_UA16: | |
1488 | if (!(outrel.r_offset & 1)) | |
1489 | r_type = R_SPARC_16; | |
1490 | break; | |
1491 | case R_SPARC_32: | |
1492 | if (outrel.r_offset & 3) | |
1493 | r_type = R_SPARC_UA32; | |
1494 | break; | |
1495 | case R_SPARC_UA32: | |
1496 | if (!(outrel.r_offset & 3)) | |
1497 | r_type = R_SPARC_32; | |
1498 | break; | |
1499 | } | |
1500 | ||
252b5132 RH |
1501 | if (skip) |
1502 | memset (&outrel, 0, sizeof outrel); | |
1503 | /* h->dynindx may be -1 if the symbol was marked to | |
1504 | become local. */ | |
bd5e6e7e | 1505 | else if (h != NULL && ! is_plt |
252b5132 RH |
1506 | && ((! info->symbolic && h->dynindx != -1) |
1507 | || (h->elf_link_hash_flags | |
1508 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1509 | { | |
1510 | BFD_ASSERT (h->dynindx != -1); | |
1511 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1512 | outrel.r_addend = rel->r_addend; | |
1513 | } | |
1514 | else | |
1515 | { | |
1fbc4a84 | 1516 | if (r_type == R_SPARC_32) |
252b5132 RH |
1517 | { |
1518 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1519 | outrel.r_addend = relocation + rel->r_addend; | |
1520 | } | |
1521 | else | |
1522 | { | |
1523 | long indx; | |
1524 | ||
bd5e6e7e JJ |
1525 | if (is_plt) |
1526 | sec = splt; | |
1527 | else if (h == NULL) | |
252b5132 RH |
1528 | sec = local_sections[r_symndx]; |
1529 | else | |
1530 | { | |
1531 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1532 | || (h->root.type | |
1533 | == bfd_link_hash_defweak)); | |
1534 | sec = h->root.u.def.section; | |
1535 | } | |
1536 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1537 | indx = 0; | |
1538 | else if (sec == NULL || sec->owner == NULL) | |
1539 | { | |
1540 | bfd_set_error (bfd_error_bad_value); | |
1541 | return false; | |
1542 | } | |
1543 | else | |
1544 | { | |
1545 | asection *osec; | |
1546 | ||
1547 | osec = sec->output_section; | |
1548 | indx = elf_section_data (osec)->dynindx; | |
1549 | ||
1550 | /* FIXME: we really should be able to link non-pic | |
1551 | shared libraries. */ | |
1552 | if (indx == 0) | |
1553 | { | |
1554 | BFD_FAIL (); | |
1555 | (*_bfd_error_handler) | |
1556 | (_("%s: probably compiled without -fPIC?"), | |
8f615d07 | 1557 | bfd_archive_filename (input_bfd)); |
252b5132 RH |
1558 | bfd_set_error (bfd_error_bad_value); |
1559 | return false; | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
840a9995 | 1564 | outrel.r_addend = relocation + rel->r_addend; |
252b5132 RH |
1565 | } |
1566 | } | |
1567 | ||
1568 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1569 | (((Elf32_External_Rela *) | |
1570 | sreloc->contents) | |
1571 | + sreloc->reloc_count)); | |
1572 | ++sreloc->reloc_count; | |
1573 | ||
1574 | /* This reloc will be computed at runtime, so there's no | |
20278fa3 | 1575 | need to do anything now. */ |
0bb2d96a JJ |
1576 | if (! relocate) |
1577 | continue; | |
252b5132 RH |
1578 | } |
1579 | break; | |
1580 | ||
1581 | default: | |
1582 | break; | |
1583 | } | |
1584 | ||
f7775d95 | 1585 | r = bfd_reloc_continue; |
252b5132 RH |
1586 | if (r_type == R_SPARC_WDISP16) |
1587 | { | |
1588 | bfd_vma x; | |
1589 | ||
1590 | relocation += rel->r_addend; | |
1591 | relocation -= (input_section->output_section->vma | |
1592 | + input_section->output_offset); | |
1593 | relocation -= rel->r_offset; | |
1594 | ||
1595 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1596 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
1597 | | ((relocation >> 2) & 0x3fff)); | |
1598 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1599 | ||
1600 | if ((bfd_signed_vma) relocation < - 0x40000 | |
1601 | || (bfd_signed_vma) relocation > 0x3ffff) | |
1602 | r = bfd_reloc_overflow; | |
1603 | else | |
1604 | r = bfd_reloc_ok; | |
1605 | } | |
1606 | else if (r_type == R_SPARC_REV32) | |
1607 | { | |
1608 | bfd_vma x; | |
1609 | ||
1610 | relocation = relocation + rel->r_addend; | |
1611 | ||
1612 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1613 | x = x + relocation; | |
1614 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); | |
1615 | r = bfd_reloc_ok; | |
1616 | } | |
f7775d95 JJ |
1617 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) |
1618 | && SEC_DO_RELAX (input_section) | |
1619 | && rel->r_offset + 4 < input_section->_raw_size) | |
1620 | { | |
1621 | #define G0 0 | |
1622 | #define O7 15 | |
1623 | #define XCC (2 << 20) | |
1624 | #define COND(x) (((x)&0xf)<<25) | |
1625 | #define CONDA COND(0x8) | |
1626 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) | |
1627 | #define INSN_BA (F2(0,2) | CONDA) | |
1628 | #define INSN_OR F3(2, 0x2, 0) | |
1629 | #define INSN_NOP F2(0,4) | |
1630 | ||
1631 | bfd_vma x, y; | |
1632 | ||
1633 | /* If the instruction is a call with either: | |
1634 | restore | |
1635 | arithmetic instruction with rd == %o7 | |
1636 | where rs1 != %o7 and rs2 if it is register != %o7 | |
1637 | then we can optimize if the call destination is near | |
1638 | by changing the call into a branch always. */ | |
1639 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1640 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
1641 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) | |
1642 | { | |
1643 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ | |
1644 | || ((y & OP3(0x28)) == 0 /* arithmetic */ | |
1645 | && (y & RD(~0)) == RD(O7))) | |
1646 | && (y & RS1(~0)) != RS1(O7) | |
1647 | && ((y & F3I(~0)) | |
1648 | || (y & RS2(~0)) != RS2(O7))) | |
1649 | { | |
1650 | bfd_vma reloc; | |
1651 | ||
1652 | reloc = relocation + rel->r_addend - rel->r_offset; | |
1653 | reloc -= (input_section->output_section->vma | |
1654 | + input_section->output_offset); | |
1655 | ||
1656 | /* Ensure the reloc fits into simm22. */ | |
1657 | if ((reloc & 3) == 0 | |
1658 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 | |
1659 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) | |
1660 | { | |
1661 | reloc >>= 2; | |
435b1e90 | 1662 | |
f7775d95 JJ |
1663 | /* Check whether it fits into simm19 on v9. */ |
1664 | if (((reloc & 0x3c0000) == 0 | |
1665 | || (reloc & 0x3c0000) == 0x3c0000) | |
1666 | && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) | |
1667 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ | |
1668 | else | |
1669 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ | |
1670 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1671 | r = bfd_reloc_ok; | |
1672 | if (rel->r_offset >= 4 | |
1673 | && (y & (0xffffffff ^ RS1(~0))) | |
1674 | == (INSN_OR | RD(O7) | RS2(G0))) | |
1675 | { | |
1676 | bfd_vma z; | |
1677 | unsigned int reg; | |
1678 | ||
1679 | z = bfd_get_32 (input_bfd, | |
1680 | contents + rel->r_offset - 4); | |
1681 | if ((z & (0xffffffff ^ RD(~0))) | |
1682 | != (INSN_OR | RS1(O7) | RS2(G0))) | |
1683 | break; | |
1684 | ||
1685 | /* The sequence was | |
1686 | or %o7, %g0, %rN | |
1687 | call foo | |
1688 | or %rN, %g0, %o7 | |
1689 | ||
1690 | If call foo was replaced with ba, replace | |
1691 | or %rN, %g0, %o7 with nop. */ | |
1692 | ||
1693 | reg = (y & RS1(~0)) >> 14; | |
1694 | if (reg != ((z & RD(~0)) >> 25) | |
1695 | || reg == G0 || reg == O7) | |
1696 | break; | |
1697 | ||
dc810e39 | 1698 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, |
f7775d95 JJ |
1699 | contents + rel->r_offset + 4); |
1700 | } | |
1701 | ||
1702 | } | |
1703 | } | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | if (r == bfd_reloc_continue) | |
252b5132 RH |
1708 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1709 | contents, rel->r_offset, | |
1710 | relocation, rel->r_addend); | |
1711 | ||
252b5132 RH |
1712 | if (r != bfd_reloc_ok) |
1713 | { | |
1714 | switch (r) | |
1715 | { | |
1716 | default: | |
1717 | case bfd_reloc_outofrange: | |
1718 | abort (); | |
1719 | case bfd_reloc_overflow: | |
1720 | { | |
1721 | const char *name; | |
1722 | ||
1723 | if (h != NULL) | |
1724 | name = h->root.root.string; | |
1725 | else | |
1726 | { | |
1727 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1728 | symtab_hdr->sh_link, | |
1729 | sym->st_name); | |
1730 | if (name == NULL) | |
1731 | return false; | |
1732 | if (*name == '\0') | |
1733 | name = bfd_section_name (input_bfd, sec); | |
1734 | } | |
1735 | if (! ((*info->callbacks->reloc_overflow) | |
1736 | (info, name, howto->name, (bfd_vma) 0, | |
1737 | input_bfd, input_section, rel->r_offset))) | |
1738 | return false; | |
1739 | } | |
1740 | break; | |
1741 | } | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | return true; | |
1746 | } | |
1747 | ||
1748 | /* Finish up dynamic symbol handling. We set the contents of various | |
1749 | dynamic sections here. */ | |
1750 | ||
1751 | static boolean | |
1752 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) | |
1753 | bfd *output_bfd; | |
1754 | struct bfd_link_info *info; | |
1755 | struct elf_link_hash_entry *h; | |
1756 | Elf_Internal_Sym *sym; | |
1757 | { | |
1758 | bfd *dynobj; | |
1759 | ||
1760 | dynobj = elf_hash_table (info)->dynobj; | |
1761 | ||
1762 | if (h->plt.offset != (bfd_vma) -1) | |
1763 | { | |
1764 | asection *splt; | |
1765 | asection *srela; | |
1766 | Elf_Internal_Rela rela; | |
1767 | ||
1768 | /* This symbol has an entry in the procedure linkage table. Set | |
1769 | it up. */ | |
1770 | ||
1771 | BFD_ASSERT (h->dynindx != -1); | |
1772 | ||
1773 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1774 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1775 | BFD_ASSERT (splt != NULL && srela != NULL); | |
1776 | ||
1777 | /* Fill in the entry in the procedure linkage table. */ | |
1778 | bfd_put_32 (output_bfd, | |
1779 | PLT_ENTRY_WORD0 + h->plt.offset, | |
1780 | splt->contents + h->plt.offset); | |
1781 | bfd_put_32 (output_bfd, | |
1782 | (PLT_ENTRY_WORD1 | |
1783 | + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)), | |
1784 | splt->contents + h->plt.offset + 4); | |
dc810e39 | 1785 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, |
252b5132 RH |
1786 | splt->contents + h->plt.offset + 8); |
1787 | ||
1788 | /* Fill in the entry in the .rela.plt section. */ | |
1789 | rela.r_offset = (splt->output_section->vma | |
1790 | + splt->output_offset | |
1791 | + h->plt.offset); | |
1792 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); | |
1793 | rela.r_addend = 0; | |
1794 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1795 | ((Elf32_External_Rela *) srela->contents | |
1796 | + h->plt.offset / PLT_ENTRY_SIZE - 4)); | |
1797 | ||
1798 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1799 | { | |
1800 | /* Mark the symbol as undefined, rather than as defined in | |
1801 | the .plt section. Leave the value alone. */ | |
1802 | sym->st_shndx = SHN_UNDEF; | |
8701c1bc JJ |
1803 | /* If the symbol is weak, we do need to clear the value. |
1804 | Otherwise, the PLT entry would provide a definition for | |
1805 | the symbol even if the symbol wasn't defined anywhere, | |
1806 | and so the symbol would never be NULL. */ | |
1807 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) | |
1808 | == 0) | |
1809 | sym->st_value = 0; | |
252b5132 RH |
1810 | } |
1811 | } | |
1812 | ||
1813 | if (h->got.offset != (bfd_vma) -1) | |
1814 | { | |
1815 | asection *sgot; | |
1816 | asection *srela; | |
1817 | Elf_Internal_Rela rela; | |
1818 | ||
1819 | /* This symbol has an entry in the global offset table. Set it | |
1820 | up. */ | |
1821 | ||
1822 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1823 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1824 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1825 | ||
1826 | rela.r_offset = (sgot->output_section->vma | |
1827 | + sgot->output_offset | |
dc810e39 | 1828 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1829 | |
1830 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1831 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1832 | the symbol was forced to be local because of a version file. | |
1833 | The entry in the global offset table will already have been | |
1834 | initialized in the relocate_section function. */ | |
1835 | if (info->shared | |
1836 | && (info->symbolic || h->dynindx == -1) | |
1837 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
1838 | rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1839 | else | |
1840 | { | |
1841 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
1842 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); | |
1843 | } | |
1844 | ||
1845 | rela.r_addend = 0; | |
1846 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1847 | ((Elf32_External_Rela *) srela->contents | |
1848 | + srela->reloc_count)); | |
1849 | ++srela->reloc_count; | |
1850 | } | |
1851 | ||
1852 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1853 | { | |
1854 | asection *s; | |
1855 | Elf_Internal_Rela rela; | |
1856 | ||
1857 | /* This symbols needs a copy reloc. Set it up. */ | |
1858 | ||
1859 | BFD_ASSERT (h->dynindx != -1); | |
1860 | ||
1861 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1862 | ".rela.bss"); | |
1863 | BFD_ASSERT (s != NULL); | |
1864 | ||
1865 | rela.r_offset = (h->root.u.def.value | |
1866 | + h->root.u.def.section->output_section->vma | |
1867 | + h->root.u.def.section->output_offset); | |
1868 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); | |
1869 | rela.r_addend = 0; | |
1870 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
1871 | ((Elf32_External_Rela *) s->contents | |
1872 | + s->reloc_count)); | |
1873 | ++s->reloc_count; | |
1874 | } | |
1875 | ||
1876 | /* Mark some specially defined symbols as absolute. */ | |
1877 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1878 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
1879 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
1880 | sym->st_shndx = SHN_ABS; | |
1881 | ||
1882 | return true; | |
1883 | } | |
1884 | ||
1885 | /* Finish up the dynamic sections. */ | |
1886 | ||
1887 | static boolean | |
1888 | elf32_sparc_finish_dynamic_sections (output_bfd, info) | |
1889 | bfd *output_bfd; | |
1890 | struct bfd_link_info *info; | |
1891 | { | |
1892 | bfd *dynobj; | |
1893 | asection *sdyn; | |
1894 | asection *sgot; | |
1895 | ||
1896 | dynobj = elf_hash_table (info)->dynobj; | |
1897 | ||
1898 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1899 | ||
1900 | if (elf_hash_table (info)->dynamic_sections_created) | |
1901 | { | |
1902 | asection *splt; | |
1903 | Elf32_External_Dyn *dyncon, *dynconend; | |
1904 | ||
1905 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1906 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1907 | ||
1908 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1909 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1910 | for (; dyncon < dynconend; dyncon++) | |
1911 | { | |
1912 | Elf_Internal_Dyn dyn; | |
1913 | const char *name; | |
1914 | boolean size; | |
1915 | ||
1916 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1917 | ||
1918 | switch (dyn.d_tag) | |
1919 | { | |
1920 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
1921 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
1922 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
1923 | default: name = NULL; size = false; break; | |
1924 | } | |
1925 | ||
1926 | if (name != NULL) | |
1927 | { | |
1928 | asection *s; | |
1929 | ||
1930 | s = bfd_get_section_by_name (output_bfd, name); | |
1931 | if (s == NULL) | |
1932 | dyn.d_un.d_val = 0; | |
1933 | else | |
1934 | { | |
1935 | if (! size) | |
1936 | dyn.d_un.d_ptr = s->vma; | |
1937 | else | |
1938 | { | |
1939 | if (s->_cooked_size != 0) | |
1940 | dyn.d_un.d_val = s->_cooked_size; | |
1941 | else | |
1942 | dyn.d_un.d_val = s->_raw_size; | |
1943 | } | |
1944 | } | |
1945 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1946 | } | |
1947 | } | |
1948 | ||
1949 | /* Clear the first four entries in the procedure linkage table, | |
1950 | and put a nop in the last four bytes. */ | |
1951 | if (splt->_raw_size > 0) | |
1952 | { | |
1953 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); | |
dc810e39 | 1954 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, |
252b5132 RH |
1955 | splt->contents + splt->_raw_size - 4); |
1956 | } | |
1957 | ||
1958 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1959 | PLT_ENTRY_SIZE; | |
1960 | } | |
1961 | ||
1962 | /* Set the first entry in the global offset table to the address of | |
1963 | the dynamic section. */ | |
1964 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1965 | BFD_ASSERT (sgot != NULL); | |
1966 | if (sgot->_raw_size > 0) | |
1967 | { | |
1968 | if (sdyn == NULL) | |
1969 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1970 | else | |
1971 | bfd_put_32 (output_bfd, | |
1972 | sdyn->output_section->vma + sdyn->output_offset, | |
1973 | sgot->contents); | |
1974 | } | |
1975 | ||
1976 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1977 | ||
252b5132 RH |
1978 | return true; |
1979 | } | |
1980 | \f | |
1981 | /* Functions for dealing with the e_flags field. | |
1982 | ||
1983 | We don't define set_private_flags or copy_private_bfd_data because | |
1984 | the only currently defined values are based on the bfd mach number, | |
1985 | so we use the latter instead and defer setting e_flags until the | |
1986 | file is written out. */ | |
1987 | ||
1988 | /* Merge backend specific data from an object file to the output | |
1989 | object file when linking. */ | |
1990 | ||
1991 | static boolean | |
1992 | elf32_sparc_merge_private_bfd_data (ibfd, obfd) | |
1993 | bfd *ibfd; | |
1994 | bfd *obfd; | |
1995 | { | |
1996 | boolean error; | |
5f771d47 ILT |
1997 | /* FIXME: This should not be static. */ |
1998 | static unsigned long previous_ibfd_e_flags = (unsigned long) -1; | |
252b5132 RH |
1999 | |
2000 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2001 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2002 | return true; | |
2003 | ||
2004 | error = false; | |
2005 | ||
252b5132 RH |
2006 | if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9) |
2007 | { | |
2008 | error = true; | |
2009 | (*_bfd_error_handler) | |
2010 | (_("%s: compiled for a 64 bit system and target is 32 bit"), | |
8f615d07 | 2011 | bfd_archive_filename (ibfd)); |
252b5132 | 2012 | } |
37fb6db1 ILT |
2013 | else if ((ibfd->flags & DYNAMIC) == 0) |
2014 | { | |
2015 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
2016 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); | |
2017 | } | |
252b5132 RH |
2018 | |
2019 | if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) | |
2020 | != previous_ibfd_e_flags) | |
5f771d47 | 2021 | && previous_ibfd_e_flags != (unsigned long) -1) |
252b5132 RH |
2022 | { |
2023 | (*_bfd_error_handler) | |
2024 | (_("%s: linking little endian files with big endian files"), | |
8f615d07 | 2025 | bfd_archive_filename (ibfd)); |
252b5132 RH |
2026 | error = true; |
2027 | } | |
2028 | previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; | |
2029 | ||
2030 | if (error) | |
2031 | { | |
2032 | bfd_set_error (bfd_error_bad_value); | |
2033 | return false; | |
2034 | } | |
2035 | ||
2036 | return true; | |
2037 | } | |
2038 | \f | |
2039 | /* Set the right machine number. */ | |
2040 | ||
2041 | static boolean | |
2042 | elf32_sparc_object_p (abfd) | |
2043 | bfd *abfd; | |
2044 | { | |
2045 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) | |
2046 | { | |
19f7b010 JJ |
2047 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
2048 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2049 | bfd_mach_sparc_v8plusb); | |
2050 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
252b5132 RH |
2051 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
2052 | bfd_mach_sparc_v8plusa); | |
2053 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) | |
2054 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2055 | bfd_mach_sparc_v8plus); | |
2056 | else | |
2057 | return false; | |
2058 | } | |
2059 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) | |
2060 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
20278fa3 | 2061 | bfd_mach_sparc_sparclite_le); |
252b5132 RH |
2062 | else |
2063 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); | |
2064 | } | |
2065 | ||
2066 | /* The final processing done just before writing out the object file. | |
2067 | We need to set the e_machine field appropriately. */ | |
2068 | ||
2069 | static void | |
2070 | elf32_sparc_final_write_processing (abfd, linker) | |
2071 | bfd *abfd; | |
5f771d47 | 2072 | boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
2073 | { |
2074 | switch (bfd_get_mach (abfd)) | |
2075 | { | |
2076 | case bfd_mach_sparc : | |
2077 | break; /* nothing to do */ | |
2078 | case bfd_mach_sparc_v8plus : | |
2079 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2080 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2081 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; | |
2082 | break; | |
2083 | case bfd_mach_sparc_v8plusa : | |
2084 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2085 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2086 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; | |
2087 | break; | |
19f7b010 JJ |
2088 | case bfd_mach_sparc_v8plusb : |
2089 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2090 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2091 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 | |
2092 | | EF_SPARC_SUN_US3; | |
2093 | break; | |
252b5132 RH |
2094 | case bfd_mach_sparc_sparclite_le : |
2095 | elf_elfheader (abfd)->e_machine = EM_SPARC; | |
2096 | elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; | |
2097 | break; | |
2098 | default : | |
2099 | abort (); | |
2100 | break; | |
2101 | } | |
2102 | } | |
db6751f2 JJ |
2103 | |
2104 | static enum elf_reloc_type_class | |
f51e552e AM |
2105 | elf32_sparc_reloc_type_class (rela) |
2106 | const Elf_Internal_Rela *rela; | |
db6751f2 | 2107 | { |
f51e552e | 2108 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
db6751f2 JJ |
2109 | { |
2110 | case R_SPARC_RELATIVE: | |
2111 | return reloc_class_relative; | |
2112 | case R_SPARC_JMP_SLOT: | |
2113 | return reloc_class_plt; | |
2114 | case R_SPARC_COPY: | |
2115 | return reloc_class_copy; | |
2116 | default: | |
2117 | return reloc_class_normal; | |
2118 | } | |
2119 | } | |
252b5132 RH |
2120 | \f |
2121 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec | |
2122 | #define TARGET_BIG_NAME "elf32-sparc" | |
2123 | #define ELF_ARCH bfd_arch_sparc | |
2124 | #define ELF_MACHINE_CODE EM_SPARC | |
2125 | #define ELF_MACHINE_ALT1 EM_SPARC32PLUS | |
2126 | #define ELF_MAXPAGESIZE 0x10000 | |
2127 | ||
2128 | #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup | |
f7775d95 | 2129 | #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section |
252b5132 RH |
2130 | #define elf_info_to_howto elf32_sparc_info_to_howto |
2131 | #define elf_backend_create_dynamic_sections \ | |
2132 | _bfd_elf_create_dynamic_sections | |
2133 | #define elf_backend_check_relocs elf32_sparc_check_relocs | |
2134 | #define elf_backend_adjust_dynamic_symbol \ | |
2135 | elf32_sparc_adjust_dynamic_symbol | |
2136 | #define elf_backend_size_dynamic_sections \ | |
2137 | elf32_sparc_size_dynamic_sections | |
2138 | #define elf_backend_relocate_section elf32_sparc_relocate_section | |
2139 | #define elf_backend_finish_dynamic_symbol \ | |
2140 | elf32_sparc_finish_dynamic_symbol | |
2141 | #define elf_backend_finish_dynamic_sections \ | |
2142 | elf32_sparc_finish_dynamic_sections | |
2143 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2144 | elf32_sparc_merge_private_bfd_data | |
2145 | #define elf_backend_object_p elf32_sparc_object_p | |
2146 | #define elf_backend_final_write_processing \ | |
2147 | elf32_sparc_final_write_processing | |
2148 | #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook | |
2149 | #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook | |
db6751f2 | 2150 | #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class |
252b5132 RH |
2151 | |
2152 | #define elf_backend_can_gc_sections 1 | |
2153 | #define elf_backend_want_got_plt 0 | |
2154 | #define elf_backend_plt_readonly 0 | |
2155 | #define elf_backend_want_plt_sym 1 | |
2156 | #define elf_backend_got_header_size 4 | |
2157 | #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE) | |
2158 | ||
2159 | #include "elf32-target.h" |