Commit | Line | Data |
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252b5132 | 1 | /* SPARC-specific support for 32-bit ELF |
1e2f5b6e | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
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 *)); | |
b34976b6 | 33 | static bfd_boolean elf32_sparc_check_relocs |
252b5132 RH |
34 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
35 | const Elf_Internal_Rela *)); | |
b34976b6 | 36 | static bfd_boolean elf32_sparc_adjust_dynamic_symbol |
252b5132 | 37 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 38 | static bfd_boolean elf32_sparc_size_dynamic_sections |
252b5132 | 39 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 AM |
40 | static bfd_boolean elf32_sparc_relax_section |
41 | PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); | |
42 | static bfd_boolean elf32_sparc_relocate_section | |
252b5132 RH |
43 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
44 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 45 | static bfd_boolean elf32_sparc_finish_dynamic_symbol |
252b5132 RH |
46 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
47 | Elf_Internal_Sym *)); | |
b34976b6 | 48 | static bfd_boolean elf32_sparc_finish_dynamic_sections |
252b5132 | 49 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 AM |
50 | static bfd_boolean elf32_sparc_merge_private_bfd_data |
51 | PARAMS ((bfd *, bfd *)); | |
52 | static bfd_boolean elf32_sparc_object_p | |
252b5132 RH |
53 | PARAMS ((bfd *)); |
54 | static void elf32_sparc_final_write_processing | |
b34976b6 | 55 | PARAMS ((bfd *, bfd_boolean)); |
db6751f2 | 56 | static enum elf_reloc_type_class elf32_sparc_reloc_type_class |
f51e552e | 57 | PARAMS ((const Elf_Internal_Rela *)); |
917583ad | 58 | static asection * elf32_sparc_gc_mark_hook |
1e2f5b6e | 59 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
917583ad | 60 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 61 | static bfd_boolean elf32_sparc_gc_sweep_hook |
917583ad NC |
62 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
63 | const Elf_Internal_Rela *)); | |
252b5132 RH |
64 | \f |
65 | /* The relocation "howto" table. */ | |
66 | ||
67 | static bfd_reloc_status_type sparc_elf_notsupported_reloc | |
68 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
69 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
70 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
71 | ||
72 | reloc_howto_type _bfd_sparc_elf_howto_table[] = | |
73 | { | |
b34976b6 AM |
74 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
75 | HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), | |
76 | HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), | |
77 | HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), | |
78 | HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), | |
79 | HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), | |
80 | HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), | |
81 | HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), | |
82 | HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), | |
83 | HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), | |
84 | HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), | |
85 | HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), | |
86 | HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), | |
87 | HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), | |
88 | HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), | |
89 | HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), | |
90 | HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), | |
91 | HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), | |
92 | HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), | |
93 | HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), | |
94 | 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), | |
95 | 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), | |
96 | HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), | |
97 | HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), | |
98 | HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), | |
99 | HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), | |
100 | HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), | |
101 | HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), | |
102 | HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), | |
103 | HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), | |
104 | HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), | |
105 | HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), | |
252b5132 RH |
106 | /* These are for sparc64 in a 64 bit environment. |
107 | Values need to be here because the table is indexed by reloc number. */ | |
b34976b6 AM |
108 | HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE), |
109 | HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE), | |
110 | HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE), | |
111 | HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE), | |
112 | HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE), | |
113 | 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), | |
114 | 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), | |
115 | 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), | |
252b5132 RH |
116 | /* End sparc64 in 64 bit environment values. |
117 | The following are for sparc64 in a 32 bit environment. */ | |
b34976b6 AM |
118 | HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), |
119 | HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), | |
120 | 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), | |
121 | HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), | |
122 | HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), | |
123 | HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,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), | |
131 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), | |
132 | HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE), | |
133 | HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), | |
134 | 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 |
135 | }; |
136 | static reloc_howto_type elf32_sparc_vtinherit_howto = | |
b34976b6 | 137 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
252b5132 | 138 | static reloc_howto_type elf32_sparc_vtentry_howto = |
b34976b6 | 139 | 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); |
252b5132 | 140 | |
252b5132 RH |
141 | struct elf_reloc_map { |
142 | bfd_reloc_code_real_type bfd_reloc_val; | |
143 | unsigned char elf_reloc_val; | |
144 | }; | |
145 | ||
dc810e39 | 146 | static const struct elf_reloc_map sparc_reloc_map[] = |
252b5132 RH |
147 | { |
148 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
149 | { BFD_RELOC_16, R_SPARC_16, }, | |
bd5e6e7e | 150 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, |
252b5132 RH |
151 | { BFD_RELOC_8, R_SPARC_8 }, |
152 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
153 | { BFD_RELOC_CTOR, R_SPARC_32 }, | |
154 | { BFD_RELOC_32, R_SPARC_32 }, | |
155 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
156 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
157 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
158 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
bd5e6e7e | 159 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, |
252b5132 RH |
160 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
161 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
162 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
163 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
164 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
165 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
166 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
167 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
168 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
169 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
170 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
171 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
172 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
0f2712ed NC |
173 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
174 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, | |
175 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, | |
176 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, | |
177 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, | |
178 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, | |
179 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, | |
180 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, | |
181 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, | |
182 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, | |
183 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, | |
184 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, | |
185 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, | |
186 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, | |
187 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, | |
188 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, | |
189 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, | |
190 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, | |
191 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, | |
192 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, | |
193 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, | |
252b5132 RH |
194 | }; |
195 | ||
196 | static reloc_howto_type * | |
197 | elf32_sparc_reloc_type_lookup (abfd, code) | |
5f771d47 | 198 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
199 | bfd_reloc_code_real_type code; |
200 | { | |
201 | unsigned int i; | |
435b1e90 | 202 | |
252b5132 RH |
203 | switch (code) |
204 | { | |
205 | case BFD_RELOC_VTABLE_INHERIT: | |
206 | return &elf32_sparc_vtinherit_howto; | |
207 | ||
208 | case BFD_RELOC_VTABLE_ENTRY: | |
209 | return &elf32_sparc_vtentry_howto; | |
210 | ||
211 | default: | |
212 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
213 | { | |
214 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
215 | return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
216 | } | |
217 | } | |
218 | bfd_set_error (bfd_error_bad_value); | |
219 | return NULL; | |
220 | } | |
221 | ||
222 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, | |
223 | and elf64-sparc.c has its own copy. */ | |
224 | ||
225 | static void | |
226 | elf32_sparc_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 227 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
228 | arelent *cache_ptr; |
229 | Elf_Internal_Rela *dst; | |
230 | { | |
60dac299 RH |
231 | switch (ELF32_R_TYPE(dst->r_info)) |
232 | { | |
233 | case R_SPARC_GNU_VTINHERIT: | |
234 | cache_ptr->howto = &elf32_sparc_vtinherit_howto; | |
235 | break; | |
236 | ||
237 | case R_SPARC_GNU_VTENTRY: | |
238 | cache_ptr->howto = &elf32_sparc_vtentry_howto; | |
239 | break; | |
240 | ||
241 | default: | |
242 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); | |
243 | cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
244 | } | |
252b5132 RH |
245 | } |
246 | \f | |
247 | /* For unsupported relocs. */ | |
248 | ||
249 | static bfd_reloc_status_type | |
250 | sparc_elf_notsupported_reloc (abfd, | |
251 | reloc_entry, | |
252 | symbol, | |
253 | data, | |
254 | input_section, | |
255 | output_bfd, | |
256 | error_message) | |
5f771d47 ILT |
257 | bfd *abfd ATTRIBUTE_UNUSED; |
258 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
259 | asymbol *symbol ATTRIBUTE_UNUSED; | |
260 | PTR data ATTRIBUTE_UNUSED; | |
261 | asection *input_section ATTRIBUTE_UNUSED; | |
262 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
263 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
264 | { |
265 | return bfd_reloc_notsupported; | |
266 | } | |
267 | ||
268 | /* Handle the WDISP16 reloc. */ | |
269 | ||
270 | static bfd_reloc_status_type | |
271 | sparc_elf_wdisp16_reloc (abfd, | |
272 | reloc_entry, | |
273 | symbol, | |
274 | data, | |
275 | input_section, | |
276 | output_bfd, | |
277 | error_message) | |
278 | bfd *abfd; | |
279 | arelent *reloc_entry; | |
280 | asymbol *symbol; | |
281 | PTR data; | |
282 | asection *input_section; | |
283 | bfd *output_bfd; | |
5f771d47 | 284 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
285 | { |
286 | bfd_vma relocation; | |
287 | bfd_vma x; | |
288 | ||
289 | if (output_bfd != (bfd *) NULL | |
290 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
291 | && (! reloc_entry->howto->partial_inplace | |
292 | || reloc_entry->addend == 0)) | |
293 | { | |
294 | reloc_entry->address += input_section->output_offset; | |
295 | return bfd_reloc_ok; | |
296 | } | |
297 | ||
298 | if (output_bfd != NULL) | |
299 | return bfd_reloc_continue; | |
300 | ||
301 | if (reloc_entry->address > input_section->_cooked_size) | |
302 | return bfd_reloc_outofrange; | |
303 | ||
304 | relocation = (symbol->value | |
305 | + symbol->section->output_section->vma | |
306 | + symbol->section->output_offset); | |
307 | relocation += reloc_entry->addend; | |
308 | relocation -= (input_section->output_section->vma | |
309 | + input_section->output_offset); | |
310 | relocation -= reloc_entry->address; | |
311 | ||
312 | x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
313 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
314 | | ((relocation >> 2) & 0x3fff)); | |
315 | bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); | |
316 | ||
317 | if ((bfd_signed_vma) relocation < - 0x40000 | |
318 | || (bfd_signed_vma) relocation > 0x3ffff) | |
319 | return bfd_reloc_overflow; | |
320 | else | |
321 | return bfd_reloc_ok; | |
322 | } | |
323 | \f | |
324 | /* Functions for the SPARC ELF linker. */ | |
325 | ||
326 | /* The name of the dynamic interpreter. This is put in the .interp | |
327 | section. */ | |
328 | ||
329 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
330 | ||
331 | /* The nop opcode we use. */ | |
332 | ||
333 | #define SPARC_NOP 0x01000000 | |
334 | ||
335 | /* The size in bytes of an entry in the procedure linkage table. */ | |
336 | ||
337 | #define PLT_ENTRY_SIZE 12 | |
338 | ||
339 | /* The first four entries in a procedure linkage table are reserved, | |
340 | and the initial contents are unimportant (we zero them out). | |
341 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
342 | supplement to see how this works. */ | |
343 | ||
344 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
345 | #define PLT_ENTRY_WORD0 0x03000000 | |
346 | /* b,a .plt0. We fill in the offset later. */ | |
347 | #define PLT_ENTRY_WORD1 0x30800000 | |
348 | /* nop. */ | |
349 | #define PLT_ENTRY_WORD2 SPARC_NOP | |
350 | ||
351 | /* Look through the relocs for a section during the first phase, and | |
352 | allocate space in the global offset table or procedure linkage | |
353 | table. */ | |
354 | ||
b34976b6 | 355 | static bfd_boolean |
252b5132 RH |
356 | elf32_sparc_check_relocs (abfd, info, sec, relocs) |
357 | bfd *abfd; | |
358 | struct bfd_link_info *info; | |
359 | asection *sec; | |
360 | const Elf_Internal_Rela *relocs; | |
361 | { | |
362 | bfd *dynobj; | |
363 | Elf_Internal_Shdr *symtab_hdr; | |
364 | struct elf_link_hash_entry **sym_hashes; | |
365 | bfd_vma *local_got_offsets; | |
366 | const Elf_Internal_Rela *rel; | |
367 | const Elf_Internal_Rela *rel_end; | |
368 | asection *sgot; | |
369 | asection *srelgot; | |
370 | asection *sreloc; | |
371 | ||
372 | if (info->relocateable) | |
b34976b6 | 373 | return TRUE; |
252b5132 RH |
374 | |
375 | dynobj = elf_hash_table (info)->dynobj; | |
376 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
377 | sym_hashes = elf_sym_hashes (abfd); | |
378 | local_got_offsets = elf_local_got_offsets (abfd); | |
379 | ||
380 | sgot = NULL; | |
381 | srelgot = NULL; | |
382 | sreloc = NULL; | |
383 | ||
384 | rel_end = relocs + sec->reloc_count; | |
385 | for (rel = relocs; rel < rel_end; rel++) | |
386 | { | |
387 | unsigned long r_symndx; | |
388 | struct elf_link_hash_entry *h; | |
389 | ||
390 | r_symndx = ELF32_R_SYM (rel->r_info); | |
391 | if (r_symndx < symtab_hdr->sh_info) | |
392 | h = NULL; | |
393 | else | |
394 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
395 | ||
396 | switch (ELF32_R_TYPE (rel->r_info)) | |
397 | { | |
398 | case R_SPARC_GOT10: | |
399 | case R_SPARC_GOT13: | |
400 | case R_SPARC_GOT22: | |
401 | /* This symbol requires a global offset table entry. */ | |
402 | ||
403 | if (dynobj == NULL) | |
404 | { | |
405 | /* Create the .got section. */ | |
406 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
407 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 408 | return FALSE; |
252b5132 RH |
409 | } |
410 | ||
411 | if (sgot == NULL) | |
412 | { | |
413 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
414 | BFD_ASSERT (sgot != NULL); | |
415 | } | |
416 | ||
417 | if (srelgot == NULL | |
418 | && (h != NULL || info->shared)) | |
419 | { | |
420 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
421 | if (srelgot == NULL) | |
422 | { | |
423 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
424 | if (srelgot == NULL | |
425 | || ! bfd_set_section_flags (dynobj, srelgot, | |
426 | (SEC_ALLOC | |
427 | | SEC_LOAD | |
428 | | SEC_HAS_CONTENTS | |
429 | | SEC_IN_MEMORY | |
430 | | SEC_LINKER_CREATED | |
431 | | SEC_READONLY)) | |
432 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 433 | return FALSE; |
252b5132 RH |
434 | } |
435 | } | |
436 | ||
437 | if (h != NULL) | |
438 | { | |
439 | if (h->got.offset != (bfd_vma) -1) | |
440 | { | |
441 | /* We have already allocated space in the .got. */ | |
442 | break; | |
443 | } | |
444 | h->got.offset = sgot->_raw_size; | |
445 | ||
446 | /* Make sure this symbol is output as a dynamic symbol. */ | |
447 | if (h->dynindx == -1) | |
448 | { | |
449 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 450 | return FALSE; |
252b5132 RH |
451 | } |
452 | ||
453 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
454 | } | |
455 | else | |
456 | { | |
457 | /* This is a global offset table entry for a local | |
458 | symbol. */ | |
459 | if (local_got_offsets == NULL) | |
460 | { | |
dc810e39 | 461 | bfd_size_type size; |
252b5132 RH |
462 | register unsigned int i; |
463 | ||
dc810e39 AM |
464 | size = symtab_hdr->sh_info; |
465 | size *= sizeof (bfd_vma); | |
252b5132 RH |
466 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); |
467 | if (local_got_offsets == NULL) | |
b34976b6 | 468 | return FALSE; |
252b5132 RH |
469 | elf_local_got_offsets (abfd) = local_got_offsets; |
470 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
471 | local_got_offsets[i] = (bfd_vma) -1; | |
472 | } | |
473 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
474 | { | |
475 | /* We have already allocated space in the .got. */ | |
476 | break; | |
477 | } | |
478 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
479 | ||
480 | if (info->shared) | |
481 | { | |
482 | /* If we are generating a shared object, we need to | |
483 | output a R_SPARC_RELATIVE reloc so that the | |
484 | dynamic linker can adjust this GOT entry. */ | |
485 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
486 | } | |
487 | } | |
488 | ||
489 | sgot->_raw_size += 4; | |
490 | ||
491 | /* If the .got section is more than 0x1000 bytes, we add | |
492 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
493 | bit relocations have a greater chance of working. */ | |
494 | if (sgot->_raw_size >= 0x1000 | |
495 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
496 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
497 | ||
498 | break; | |
499 | ||
bd5e6e7e | 500 | case R_SPARC_PLT32: |
252b5132 RH |
501 | case R_SPARC_WPLT30: |
502 | /* This symbol requires a procedure linkage table entry. We | |
503 | actually build the entry in adjust_dynamic_symbol, | |
504 | because this might be a case of linking PIC code without | |
505 | linking in any dynamic objects, in which case we don't | |
506 | need to generate a procedure linkage table after all. */ | |
507 | ||
508 | if (h == NULL) | |
509 | { | |
510 | /* The Solaris native assembler will generate a WPLT30 | |
511 | reloc for a local symbol if you assemble a call from | |
512 | one section to another when using -K pic. We treat | |
513 | it as WDISP30. */ | |
bd5e6e7e JJ |
514 | if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30) |
515 | goto r_sparc_plt32; | |
252b5132 RH |
516 | break; |
517 | } | |
518 | ||
519 | /* Make sure this symbol is output as a dynamic symbol. */ | |
520 | if (h->dynindx == -1) | |
521 | { | |
522 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 523 | return FALSE; |
252b5132 RH |
524 | } |
525 | ||
526 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
527 | ||
bd5e6e7e JJ |
528 | if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30) |
529 | goto r_sparc_plt32; | |
252b5132 RH |
530 | break; |
531 | ||
532 | case R_SPARC_PC10: | |
533 | case R_SPARC_PC22: | |
7843f00e ILT |
534 | if (h != NULL) |
535 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
536 | ||
252b5132 RH |
537 | if (h != NULL |
538 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
539 | break; | |
540 | /* Fall through. */ | |
541 | case R_SPARC_DISP8: | |
542 | case R_SPARC_DISP16: | |
543 | case R_SPARC_DISP32: | |
544 | case R_SPARC_WDISP30: | |
545 | case R_SPARC_WDISP22: | |
546 | case R_SPARC_WDISP19: | |
547 | case R_SPARC_WDISP16: | |
7843f00e ILT |
548 | if (h != NULL) |
549 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
550 | ||
252b5132 RH |
551 | /* If we are linking with -Bsymbolic, we do not need to copy |
552 | a PC relative reloc against a global symbol which is | |
553 | defined in an object we are including in the link (i.e., | |
554 | DEF_REGULAR is set). FIXME: At this point we have not | |
555 | seen all the input files, so it is possible that | |
556 | DEF_REGULAR is not set now but will be set later (it is | |
557 | never cleared). This needs to be handled as in | |
558 | elf32-i386.c. */ | |
559 | if (h == NULL | |
560 | || (info->symbolic | |
561 | && (h->elf_link_hash_flags | |
562 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
563 | break; | |
564 | /* Fall through. */ | |
565 | case R_SPARC_8: | |
566 | case R_SPARC_16: | |
567 | case R_SPARC_32: | |
568 | case R_SPARC_HI22: | |
569 | case R_SPARC_22: | |
570 | case R_SPARC_13: | |
571 | case R_SPARC_LO10: | |
0f2712ed | 572 | case R_SPARC_UA16: |
252b5132 | 573 | case R_SPARC_UA32: |
7843f00e ILT |
574 | if (h != NULL) |
575 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
576 | ||
bd5e6e7e | 577 | r_sparc_plt32: |
20278fa3 | 578 | if (info->shared && (sec->flags & SEC_ALLOC)) |
252b5132 RH |
579 | { |
580 | /* When creating a shared object, we must copy these | |
581 | relocs into the output file. We create a reloc | |
582 | section in dynobj and make room for the reloc. */ | |
583 | if (sreloc == NULL) | |
584 | { | |
585 | const char *name; | |
586 | ||
587 | name = (bfd_elf_string_from_elf_section | |
588 | (abfd, | |
589 | elf_elfheader (abfd)->e_shstrndx, | |
590 | elf_section_data (sec)->rel_hdr.sh_name)); | |
591 | if (name == NULL) | |
b34976b6 | 592 | return FALSE; |
252b5132 RH |
593 | |
594 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
595 | && strcmp (bfd_get_section_name (abfd, sec), | |
596 | name + 5) == 0); | |
597 | ||
598 | sreloc = bfd_get_section_by_name (dynobj, name); | |
599 | if (sreloc == NULL) | |
600 | { | |
601 | flagword flags; | |
602 | ||
603 | sreloc = bfd_make_section (dynobj, name); | |
604 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
605 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
606 | if ((sec->flags & SEC_ALLOC) != 0) | |
607 | flags |= SEC_ALLOC | SEC_LOAD; | |
608 | if (sreloc == NULL | |
609 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
610 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 611 | return FALSE; |
252b5132 | 612 | } |
db6751f2 JJ |
613 | if (sec->flags & SEC_READONLY) |
614 | info->flags |= DF_TEXTREL; | |
252b5132 RH |
615 | } |
616 | ||
617 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
618 | } | |
619 | ||
620 | break; | |
621 | ||
622 | case R_SPARC_GNU_VTINHERIT: | |
623 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 624 | return FALSE; |
252b5132 RH |
625 | break; |
626 | ||
627 | case R_SPARC_GNU_VTENTRY: | |
628 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 629 | return FALSE; |
252b5132 RH |
630 | break; |
631 | ||
632 | default: | |
633 | break; | |
634 | } | |
635 | } | |
636 | ||
b34976b6 | 637 | return TRUE; |
252b5132 RH |
638 | } |
639 | ||
640 | static asection * | |
1e2f5b6e AM |
641 | elf32_sparc_gc_mark_hook (sec, info, rel, h, sym) |
642 | asection *sec; | |
5f771d47 | 643 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
644 | Elf_Internal_Rela *rel; |
645 | struct elf_link_hash_entry *h; | |
646 | Elf_Internal_Sym *sym; | |
647 | { | |
252b5132 RH |
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 | |
1e2f5b6e | 672 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
673 | |
674 | return NULL; | |
675 | } | |
676 | ||
677 | /* Update the got entry reference counts for the section being removed. */ | |
b34976b6 | 678 | static bfd_boolean |
252b5132 RH |
679 | elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs) |
680 | bfd *abfd; | |
5f771d47 | 681 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
682 | asection *sec; |
683 | const Elf_Internal_Rela *relocs; | |
684 | { | |
685 | ||
686 | Elf_Internal_Shdr *symtab_hdr; | |
687 | struct elf_link_hash_entry **sym_hashes; | |
688 | bfd_signed_vma *local_got_refcounts; | |
689 | const Elf_Internal_Rela *rel, *relend; | |
690 | unsigned long r_symndx; | |
691 | struct elf_link_hash_entry *h; | |
692 | ||
693 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
694 | sym_hashes = elf_sym_hashes (abfd); | |
695 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
696 | ||
697 | relend = relocs + sec->reloc_count; | |
698 | for (rel = relocs; rel < relend; rel++) | |
699 | switch (ELF32_R_TYPE (rel->r_info)) | |
700 | { | |
701 | case R_SPARC_GOT10: | |
702 | case R_SPARC_GOT13: | |
703 | case R_SPARC_GOT22: | |
704 | r_symndx = ELF32_R_SYM (rel->r_info); | |
705 | if (r_symndx >= symtab_hdr->sh_info) | |
706 | { | |
707 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
708 | if (h->got.refcount > 0) | |
709 | h->got.refcount--; | |
710 | } | |
711 | else | |
712 | { | |
713 | if (local_got_refcounts[r_symndx] > 0) | |
714 | local_got_refcounts[r_symndx]--; | |
715 | } | |
716 | break; | |
717 | ||
718 | case R_SPARC_PLT32: | |
719 | case R_SPARC_HIPLT22: | |
720 | case R_SPARC_LOPLT10: | |
721 | case R_SPARC_PCPLT32: | |
722 | case R_SPARC_PCPLT10: | |
723 | r_symndx = ELF32_R_SYM (rel->r_info); | |
724 | if (r_symndx >= symtab_hdr->sh_info) | |
725 | { | |
726 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
727 | if (h->plt.refcount > 0) | |
728 | h->plt.refcount--; | |
729 | } | |
730 | break; | |
731 | ||
732 | default: | |
733 | break; | |
734 | } | |
735 | ||
b34976b6 | 736 | return TRUE; |
252b5132 RH |
737 | } |
738 | ||
739 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
740 | regular object. The current definition is in some section of the | |
741 | dynamic object, but we're not including those sections. We have to | |
742 | change the definition to something the rest of the link can | |
743 | understand. */ | |
744 | ||
b34976b6 | 745 | static bfd_boolean |
252b5132 RH |
746 | elf32_sparc_adjust_dynamic_symbol (info, h) |
747 | struct bfd_link_info *info; | |
748 | struct elf_link_hash_entry *h; | |
749 | { | |
750 | bfd *dynobj; | |
751 | asection *s; | |
752 | unsigned int power_of_two; | |
753 | ||
754 | dynobj = elf_hash_table (info)->dynobj; | |
755 | ||
756 | /* Make sure we know what is going on here. */ | |
757 | BFD_ASSERT (dynobj != NULL | |
758 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
759 | || h->weakdef != NULL | |
760 | || ((h->elf_link_hash_flags | |
761 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
762 | && (h->elf_link_hash_flags | |
763 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
764 | && (h->elf_link_hash_flags | |
765 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
766 | ||
767 | /* If this is a function, put it in the procedure linkage table. We | |
768 | will fill in the contents of the procedure linkage table later | |
769 | (although we could actually do it here). The STT_NOTYPE | |
770 | condition is a hack specifically for the Oracle libraries | |
771 | delivered for Solaris; for some inexplicable reason, they define | |
772 | some of their functions as STT_NOTYPE when they really should be | |
773 | STT_FUNC. */ | |
774 | if (h->type == STT_FUNC | |
775 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 | |
776 | || (h->type == STT_NOTYPE | |
777 | && (h->root.type == bfd_link_hash_defined | |
778 | || h->root.type == bfd_link_hash_defweak) | |
779 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
780 | { | |
781 | if (! elf_hash_table (info)->dynamic_sections_created | |
782 | || ((!info->shared || info->symbolic || h->dynindx == -1) | |
783 | && (h->elf_link_hash_flags | |
784 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
785 | { | |
786 | /* This case can occur if we saw a WPLT30 reloc in an input | |
787 | file, but none of the input files were dynamic objects. | |
788 | Or, when linking the main application or a -Bsymbolic | |
789 | shared library against PIC code. Or when a global symbol | |
790 | has been made private, e.g. via versioning. | |
791 | ||
792 | In these cases we know what value the symbol will resolve | |
793 | to, so we don't actually need to build a procedure linkage | |
794 | table, and we can just do a WDISP30 reloc instead. */ | |
795 | ||
796 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
b34976b6 | 797 | return TRUE; |
252b5132 RH |
798 | } |
799 | ||
800 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
801 | BFD_ASSERT (s != NULL); | |
802 | ||
803 | /* The first four entries in .plt are reserved. */ | |
804 | if (s->_raw_size == 0) | |
805 | s->_raw_size = 4 * PLT_ENTRY_SIZE; | |
806 | ||
807 | /* The procedure linkage table has a maximum size. */ | |
808 | if (s->_raw_size >= 0x400000) | |
809 | { | |
810 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 811 | return FALSE; |
252b5132 RH |
812 | } |
813 | ||
814 | /* If this symbol is not defined in a regular file, and we are | |
815 | not generating a shared library, then set the symbol to this | |
816 | location in the .plt. This is required to make function | |
817 | pointers compare as equal between the normal executable and | |
818 | the shared library. */ | |
819 | if (! info->shared | |
820 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
821 | { | |
822 | h->root.u.def.section = s; | |
823 | h->root.u.def.value = s->_raw_size; | |
824 | } | |
825 | ||
826 | h->plt.offset = s->_raw_size; | |
827 | ||
828 | /* Make room for this entry. */ | |
829 | s->_raw_size += PLT_ENTRY_SIZE; | |
830 | ||
831 | /* We also need to make an entry in the .rela.plt section. */ | |
832 | ||
833 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
834 | BFD_ASSERT (s != NULL); | |
835 | s->_raw_size += sizeof (Elf32_External_Rela); | |
836 | ||
b34976b6 | 837 | return TRUE; |
252b5132 RH |
838 | } |
839 | ||
840 | /* If this is a weak symbol, and there is a real definition, the | |
841 | processor independent code will have arranged for us to see the | |
842 | real definition first, and we can just use the same value. */ | |
843 | if (h->weakdef != NULL) | |
844 | { | |
845 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
846 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
847 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
848 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 849 | return TRUE; |
252b5132 RH |
850 | } |
851 | ||
852 | /* This is a reference to a symbol defined by a dynamic object which | |
853 | is not a function. */ | |
854 | ||
855 | /* If we are creating a shared library, we must presume that the | |
856 | only references to the symbol are via the global offset table. | |
857 | For such cases we need not do anything here; the relocations will | |
858 | be handled correctly by relocate_section. */ | |
859 | if (info->shared) | |
b34976b6 | 860 | return TRUE; |
252b5132 | 861 | |
7843f00e ILT |
862 | /* If there are no references to this symbol that do not use the |
863 | GOT, we don't need to generate a copy reloc. */ | |
864 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 865 | return TRUE; |
7843f00e | 866 | |
252b5132 RH |
867 | /* We must allocate the symbol in our .dynbss section, which will |
868 | become part of the .bss section of the executable. There will be | |
869 | an entry for this symbol in the .dynsym section. The dynamic | |
870 | object will contain position independent code, so all references | |
871 | from the dynamic object to this symbol will go through the global | |
872 | offset table. The dynamic linker will use the .dynsym entry to | |
873 | determine the address it must put in the global offset table, so | |
874 | both the dynamic object and the regular object will refer to the | |
875 | same memory location for the variable. */ | |
876 | ||
877 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
878 | BFD_ASSERT (s != NULL); | |
879 | ||
880 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
881 | to copy the initial value out of the dynamic object and into the | |
882 | runtime process image. We need to remember the offset into the | |
883 | .rel.bss section we are going to use. */ | |
884 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
885 | { | |
886 | asection *srel; | |
887 | ||
888 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
889 | BFD_ASSERT (srel != NULL); | |
890 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
891 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
892 | } | |
893 | ||
894 | /* We need to figure out the alignment required for this symbol. I | |
895 | have no idea how ELF linkers handle this. */ | |
896 | power_of_two = bfd_log2 (h->size); | |
897 | if (power_of_two > 3) | |
898 | power_of_two = 3; | |
899 | ||
900 | /* Apply the required alignment. */ | |
901 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
902 | (bfd_size_type) (1 << power_of_two)); | |
903 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
904 | { | |
905 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 906 | return FALSE; |
252b5132 RH |
907 | } |
908 | ||
909 | /* Define the symbol as being at this point in the section. */ | |
910 | h->root.u.def.section = s; | |
911 | h->root.u.def.value = s->_raw_size; | |
912 | ||
913 | /* Increment the section size to make room for the symbol. */ | |
914 | s->_raw_size += h->size; | |
915 | ||
b34976b6 | 916 | return TRUE; |
252b5132 RH |
917 | } |
918 | ||
919 | /* Set the sizes of the dynamic sections. */ | |
920 | ||
b34976b6 | 921 | static bfd_boolean |
252b5132 | 922 | elf32_sparc_size_dynamic_sections (output_bfd, info) |
db6751f2 | 923 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
924 | struct bfd_link_info *info; |
925 | { | |
926 | bfd *dynobj; | |
927 | asection *s; | |
b34976b6 | 928 | bfd_boolean relplt; |
252b5132 RH |
929 | |
930 | dynobj = elf_hash_table (info)->dynobj; | |
931 | BFD_ASSERT (dynobj != NULL); | |
932 | ||
933 | if (elf_hash_table (info)->dynamic_sections_created) | |
934 | { | |
935 | /* Set the contents of the .interp section to the interpreter. */ | |
936 | if (! info->shared) | |
937 | { | |
938 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
939 | BFD_ASSERT (s != NULL); | |
940 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
941 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
942 | } | |
943 | ||
944 | /* Make space for the trailing nop in .plt. */ | |
945 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
946 | BFD_ASSERT (s != NULL); | |
947 | if (s->_raw_size > 0) | |
948 | s->_raw_size += 4; | |
949 | } | |
950 | else | |
951 | { | |
952 | /* We may have created entries in the .rela.got section. | |
953 | However, if we are not creating the dynamic sections, we will | |
954 | not actually use these entries. Reset the size of .rela.got, | |
955 | which will cause it to get stripped from the output file | |
956 | below. */ | |
957 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
958 | if (s != NULL) | |
959 | s->_raw_size = 0; | |
960 | } | |
961 | ||
962 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
963 | determined the sizes of the various dynamic sections. Allocate | |
964 | memory for them. */ | |
b34976b6 | 965 | relplt = FALSE; |
252b5132 RH |
966 | for (s = dynobj->sections; s != NULL; s = s->next) |
967 | { | |
968 | const char *name; | |
b34976b6 | 969 | bfd_boolean strip; |
252b5132 RH |
970 | |
971 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
972 | continue; | |
973 | ||
974 | /* It's OK to base decisions on the section name, because none | |
975 | of the dynobj section names depend upon the input files. */ | |
976 | name = bfd_get_section_name (dynobj, s); | |
977 | ||
b34976b6 | 978 | strip = FALSE; |
252b5132 RH |
979 | |
980 | if (strncmp (name, ".rela", 5) == 0) | |
981 | { | |
982 | if (s->_raw_size == 0) | |
983 | { | |
984 | /* If we don't need this section, strip it from the | |
985 | output file. This is to handle .rela.bss and | |
986 | .rel.plt. We must create it in | |
987 | create_dynamic_sections, because it must be created | |
988 | before the linker maps input sections to output | |
989 | sections. The linker does that before | |
990 | adjust_dynamic_symbol is called, and it is that | |
991 | function which decides whether anything needs to go | |
992 | into these sections. */ | |
b34976b6 | 993 | strip = TRUE; |
252b5132 RH |
994 | } |
995 | else | |
996 | { | |
252b5132 | 997 | if (strcmp (name, ".rela.plt") == 0) |
b34976b6 | 998 | relplt = TRUE; |
252b5132 RH |
999 | |
1000 | /* We use the reloc_count field as a counter if we need | |
1001 | to copy relocs into the output file. */ | |
1002 | s->reloc_count = 0; | |
1003 | } | |
1004 | } | |
1005 | else if (strcmp (name, ".plt") != 0 | |
1006 | && strcmp (name, ".got") != 0) | |
1007 | { | |
1008 | /* It's not one of our sections, so don't allocate space. */ | |
1009 | continue; | |
1010 | } | |
1011 | ||
1012 | if (strip) | |
1013 | { | |
7f8d5fc9 | 1014 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1015 | continue; |
1016 | } | |
1017 | ||
1018 | /* Allocate memory for the section contents. */ | |
7a9af8c4 NC |
1019 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1020 | Unused entries should be reclaimed before the section's contents | |
1021 | are written out, but at the moment this does not happen. Thus in | |
1022 | order to prevent writing out garbage, we initialise the section's | |
1023 | contents to zero. */ | |
1024 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
252b5132 | 1025 | if (s->contents == NULL && s->_raw_size != 0) |
b34976b6 | 1026 | return FALSE; |
252b5132 RH |
1027 | } |
1028 | ||
1029 | if (elf_hash_table (info)->dynamic_sections_created) | |
1030 | { | |
1031 | /* Add some entries to the .dynamic section. We fill in the | |
1032 | values later, in elf32_sparc_finish_dynamic_sections, but we | |
1033 | must add the entries now so that we get the correct size for | |
1034 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1035 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1036 | #define add_dynamic_entry(TAG, VAL) \ |
1037 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1038 | ||
1039 | if (!info->shared) | |
252b5132 | 1040 | { |
dc810e39 | 1041 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1042 | return FALSE; |
252b5132 RH |
1043 | } |
1044 | ||
1045 | if (relplt) | |
1046 | { | |
dc810e39 AM |
1047 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1048 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1049 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1050 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1051 | return FALSE; |
252b5132 RH |
1052 | } |
1053 | ||
dc810e39 AM |
1054 | if (!add_dynamic_entry (DT_RELA, 0) |
1055 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1056 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1057 | return FALSE; |
252b5132 | 1058 | |
db6751f2 | 1059 | if (info->flags & DF_TEXTREL) |
252b5132 | 1060 | { |
dc810e39 | 1061 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1062 | return FALSE; |
252b5132 RH |
1063 | } |
1064 | } | |
dc810e39 | 1065 | #undef add_dynamic_entry |
252b5132 | 1066 | |
b34976b6 | 1067 | return TRUE; |
252b5132 RH |
1068 | } |
1069 | ||
f7775d95 JJ |
1070 | #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0) |
1071 | #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1) | |
1072 | ||
b34976b6 | 1073 | static bfd_boolean |
f7775d95 JJ |
1074 | elf32_sparc_relax_section (abfd, section, link_info, again) |
1075 | bfd *abfd ATTRIBUTE_UNUSED; | |
1076 | asection *section ATTRIBUTE_UNUSED; | |
1077 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
b34976b6 | 1078 | bfd_boolean *again; |
f7775d95 | 1079 | { |
b34976b6 | 1080 | *again = FALSE; |
f7775d95 | 1081 | SET_SEC_DO_RELAX (section); |
b34976b6 | 1082 | return TRUE; |
f7775d95 JJ |
1083 | } |
1084 | ||
e36f7d53 RH |
1085 | /* This is the condition under which finish_dynamic_symbol will be called |
1086 | from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol | |
1087 | routine, we'll need to do something about initializing any .plt and .got | |
1088 | entries in relocate_section. */ | |
1089 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1090 | ((DYN) \ | |
1091 | && ((INFO)->shared \ | |
1092 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1093 | && ((H)->dynindx != -1 \ | |
1094 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1095 | ||
252b5132 RH |
1096 | /* Relocate a SPARC ELF section. */ |
1097 | ||
b34976b6 | 1098 | static bfd_boolean |
252b5132 RH |
1099 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, |
1100 | contents, relocs, local_syms, local_sections) | |
1101 | bfd *output_bfd; | |
1102 | struct bfd_link_info *info; | |
1103 | bfd *input_bfd; | |
1104 | asection *input_section; | |
1105 | bfd_byte *contents; | |
1106 | Elf_Internal_Rela *relocs; | |
1107 | Elf_Internal_Sym *local_syms; | |
1108 | asection **local_sections; | |
1109 | { | |
1110 | bfd *dynobj; | |
1111 | Elf_Internal_Shdr *symtab_hdr; | |
1112 | struct elf_link_hash_entry **sym_hashes; | |
1113 | bfd_vma *local_got_offsets; | |
1114 | bfd_vma got_base; | |
1115 | asection *sgot; | |
1116 | asection *splt; | |
1117 | asection *sreloc; | |
1118 | Elf_Internal_Rela *rel; | |
1119 | Elf_Internal_Rela *relend; | |
1120 | ||
f0fe0e16 | 1121 | if (info->relocateable) |
b34976b6 | 1122 | return TRUE; |
f0fe0e16 | 1123 | |
252b5132 RH |
1124 | dynobj = elf_hash_table (info)->dynobj; |
1125 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1126 | sym_hashes = elf_sym_hashes (input_bfd); | |
1127 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1128 | ||
1129 | if (elf_hash_table (info)->hgot == NULL) | |
1130 | got_base = 0; | |
1131 | else | |
1132 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1133 | ||
1134 | sgot = NULL; | |
1135 | splt = NULL; | |
1136 | sreloc = NULL; | |
1137 | ||
1138 | rel = relocs; | |
1139 | relend = relocs + input_section->reloc_count; | |
1140 | for (; rel < relend; rel++) | |
1141 | { | |
1142 | int r_type; | |
1143 | reloc_howto_type *howto; | |
1144 | unsigned long r_symndx; | |
1145 | struct elf_link_hash_entry *h; | |
1146 | Elf_Internal_Sym *sym; | |
1147 | asection *sec; | |
e36f7d53 | 1148 | bfd_vma relocation, off; |
252b5132 | 1149 | bfd_reloc_status_type r; |
b34976b6 AM |
1150 | bfd_boolean is_plt = FALSE; |
1151 | bfd_boolean unresolved_reloc; | |
252b5132 RH |
1152 | |
1153 | r_type = ELF32_R_TYPE (rel->r_info); | |
1154 | ||
435b1e90 | 1155 | if (r_type == R_SPARC_GNU_VTINHERIT |
252b5132 RH |
1156 | || r_type == R_SPARC_GNU_VTENTRY) |
1157 | continue; | |
1158 | ||
60dac299 | 1159 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1160 | { |
1161 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1162 | return FALSE; |
252b5132 RH |
1163 | } |
1164 | howto = _bfd_sparc_elf_howto_table + r_type; | |
1165 | ||
252b5132 | 1166 | /* This is a final link. */ |
f0fe0e16 | 1167 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 RH |
1168 | h = NULL; |
1169 | sym = NULL; | |
1170 | sec = NULL; | |
b34976b6 | 1171 | unresolved_reloc = FALSE; |
252b5132 RH |
1172 | if (r_symndx < symtab_hdr->sh_info) |
1173 | { | |
1174 | sym = local_syms + r_symndx; | |
1175 | sec = local_sections[r_symndx]; | |
f8df10f4 | 1176 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
252b5132 RH |
1177 | } |
1178 | else | |
1179 | { | |
1180 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1181 | while (h->root.type == bfd_link_hash_indirect | |
1182 | || h->root.type == bfd_link_hash_warning) | |
1183 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e36f7d53 RH |
1184 | |
1185 | relocation = 0; | |
252b5132 RH |
1186 | if (h->root.type == bfd_link_hash_defined |
1187 | || h->root.type == bfd_link_hash_defweak) | |
1188 | { | |
1189 | sec = h->root.u.def.section; | |
e36f7d53 RH |
1190 | if (sec->output_section == NULL) |
1191 | /* Set a flag that will be cleared later if we find a | |
1192 | relocation value for this symbol. output_section | |
1193 | is typically NULL for symbols satisfied by a shared | |
1194 | library. */ | |
b34976b6 | 1195 | unresolved_reloc = TRUE; |
252b5132 RH |
1196 | else |
1197 | relocation = (h->root.u.def.value | |
1198 | + sec->output_section->vma | |
1199 | + sec->output_offset); | |
1200 | } | |
1201 | else if (h->root.type == bfd_link_hash_undefweak) | |
e36f7d53 | 1202 | ; |
671bae9c NC |
1203 | else if (info->shared |
1204 | && (!info->symbolic || info->allow_shlib_undefined) | |
3a27a730 L |
1205 | && !info->no_undefined |
1206 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
e36f7d53 | 1207 | ; |
252b5132 RH |
1208 | else |
1209 | { | |
1210 | if (! ((*info->callbacks->undefined_symbol) | |
1211 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1212 | input_section, rel->r_offset, |
3a27a730 L |
1213 | (!info->shared || info->no_undefined |
1214 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 1215 | return FALSE; |
252b5132 RH |
1216 | } |
1217 | } | |
1218 | ||
1219 | switch (r_type) | |
1220 | { | |
1221 | case R_SPARC_GOT10: | |
1222 | case R_SPARC_GOT13: | |
1223 | case R_SPARC_GOT22: | |
1224 | /* Relocation is to the entry for this symbol in the global | |
1225 | offset table. */ | |
1226 | if (sgot == NULL) | |
1227 | { | |
1228 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1229 | BFD_ASSERT (sgot != NULL); | |
1230 | } | |
1231 | ||
1232 | if (h != NULL) | |
1233 | { | |
b34976b6 | 1234 | bfd_boolean dyn; |
252b5132 RH |
1235 | |
1236 | off = h->got.offset; | |
1237 | BFD_ASSERT (off != (bfd_vma) -1); | |
e36f7d53 | 1238 | dyn = elf_hash_table (info)->dynamic_sections_created; |
252b5132 | 1239 | |
e36f7d53 | 1240 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) |
252b5132 | 1241 | || (info->shared |
e36f7d53 RH |
1242 | && (info->symbolic |
1243 | || h->dynindx == -1 | |
1244 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
252b5132 RH |
1245 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
1246 | { | |
1247 | /* This is actually a static link, or it is a | |
1248 | -Bsymbolic link and the symbol is defined | |
1249 | locally, or the symbol was forced to be local | |
1250 | because of a version file. We must initialize | |
1251 | this entry in the global offset table. Since the | |
1252 | offset must always be a multiple of 4, we use the | |
1253 | least significant bit to record whether we have | |
1254 | initialized it already. | |
1255 | ||
1256 | When doing a dynamic link, we create a .rela.got | |
1257 | relocation entry to initialize the value. This | |
1258 | is done in the finish_dynamic_symbol routine. */ | |
1259 | if ((off & 1) != 0) | |
1260 | off &= ~1; | |
1261 | else | |
1262 | { | |
1263 | bfd_put_32 (output_bfd, relocation, | |
1264 | sgot->contents + off); | |
1265 | h->got.offset |= 1; | |
1266 | } | |
1267 | } | |
e36f7d53 | 1268 | else |
b34976b6 | 1269 | unresolved_reloc = FALSE; |
252b5132 RH |
1270 | } |
1271 | else | |
1272 | { | |
252b5132 RH |
1273 | BFD_ASSERT (local_got_offsets != NULL |
1274 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1275 | ||
1276 | off = local_got_offsets[r_symndx]; | |
1277 | ||
1278 | /* The offset must always be a multiple of 4. We use | |
1279 | the least significant bit to record whether we have | |
1280 | already processed this entry. */ | |
1281 | if ((off & 1) != 0) | |
1282 | off &= ~1; | |
1283 | else | |
1284 | { | |
252b5132 RH |
1285 | |
1286 | if (info->shared) | |
1287 | { | |
b34976b6 | 1288 | asection *s; |
252b5132 | 1289 | Elf_Internal_Rela outrel; |
b34976b6 | 1290 | bfd_byte *loc; |
252b5132 RH |
1291 | |
1292 | /* We need to generate a R_SPARC_RELATIVE reloc | |
1293 | for the dynamic linker. */ | |
b34976b6 AM |
1294 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1295 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1296 | |
1297 | outrel.r_offset = (sgot->output_section->vma | |
1298 | + sgot->output_offset | |
1299 | + off); | |
1300 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
6b3ac709 JJ |
1301 | outrel.r_addend = relocation; |
1302 | relocation = 0; | |
b34976b6 AM |
1303 | loc = s->contents; |
1304 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1305 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1306 | } |
1307 | ||
6b3ac709 | 1308 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
252b5132 RH |
1309 | local_got_offsets[r_symndx] |= 1; |
1310 | } | |
252b5132 | 1311 | } |
e36f7d53 | 1312 | relocation = sgot->output_offset + off - got_base; |
252b5132 RH |
1313 | break; |
1314 | ||
bd5e6e7e JJ |
1315 | case R_SPARC_PLT32: |
1316 | if (h == NULL || h->plt.offset == (bfd_vma) -1) | |
1317 | { | |
1318 | r_type = R_SPARC_32; | |
1319 | goto r_sparc_plt32; | |
1320 | } | |
1321 | /* Fall through. */ | |
252b5132 RH |
1322 | case R_SPARC_WPLT30: |
1323 | /* Relocation is to the entry for this symbol in the | |
1324 | procedure linkage table. */ | |
1325 | ||
1326 | /* The Solaris native assembler will generate a WPLT30 reloc | |
1327 | for a local symbol if you assemble a call from one | |
1328 | section to another when using -K pic. We treat it as | |
1329 | WDISP30. */ | |
1330 | if (h == NULL) | |
1331 | break; | |
1332 | ||
1333 | if (h->plt.offset == (bfd_vma) -1) | |
1334 | { | |
1335 | /* We didn't make a PLT entry for this symbol. This | |
1336 | happens when statically linking PIC code, or when | |
1337 | using -Bsymbolic. */ | |
1338 | break; | |
1339 | } | |
1340 | ||
1341 | if (splt == NULL) | |
1342 | { | |
1343 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1344 | BFD_ASSERT (splt != NULL); | |
1345 | } | |
1346 | ||
1347 | relocation = (splt->output_section->vma | |
1348 | + splt->output_offset | |
1349 | + h->plt.offset); | |
b34976b6 | 1350 | unresolved_reloc = FALSE; |
bd5e6e7e JJ |
1351 | if (r_type == R_SPARC_PLT32) |
1352 | { | |
1353 | r_type = R_SPARC_32; | |
b34976b6 | 1354 | is_plt = TRUE; |
bd5e6e7e JJ |
1355 | goto r_sparc_plt32; |
1356 | } | |
252b5132 RH |
1357 | break; |
1358 | ||
1359 | case R_SPARC_PC10: | |
1360 | case R_SPARC_PC22: | |
1361 | if (h != NULL | |
1362 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1363 | break; | |
1364 | /* Fall through. */ | |
1365 | case R_SPARC_DISP8: | |
1366 | case R_SPARC_DISP16: | |
1367 | case R_SPARC_DISP32: | |
1368 | case R_SPARC_WDISP30: | |
1369 | case R_SPARC_WDISP22: | |
1370 | case R_SPARC_WDISP19: | |
1371 | case R_SPARC_WDISP16: | |
1372 | if (h == NULL | |
1373 | || (info->symbolic | |
1374 | && (h->elf_link_hash_flags | |
1375 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
1376 | break; | |
1377 | /* Fall through. */ | |
1378 | case R_SPARC_8: | |
1379 | case R_SPARC_16: | |
1380 | case R_SPARC_32: | |
1381 | case R_SPARC_HI22: | |
1382 | case R_SPARC_22: | |
1383 | case R_SPARC_13: | |
1384 | case R_SPARC_LO10: | |
0f2712ed | 1385 | case R_SPARC_UA16: |
252b5132 | 1386 | case R_SPARC_UA32: |
bd5e6e7e | 1387 | r_sparc_plt32: |
ec338859 AM |
1388 | if (info->shared |
1389 | && r_symndx != 0 | |
1390 | && (input_section->flags & SEC_ALLOC)) | |
252b5132 RH |
1391 | { |
1392 | Elf_Internal_Rela outrel; | |
b34976b6 AM |
1393 | bfd_byte *loc; |
1394 | bfd_boolean skip, relocate = FALSE; | |
252b5132 RH |
1395 | |
1396 | /* When generating a shared object, these relocations | |
1397 | are copied into the output file to be resolved at run | |
1398 | time. */ | |
1399 | ||
1400 | if (sreloc == NULL) | |
1401 | { | |
1402 | const char *name; | |
1403 | ||
1404 | name = (bfd_elf_string_from_elf_section | |
1405 | (input_bfd, | |
1406 | elf_elfheader (input_bfd)->e_shstrndx, | |
1407 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1408 | if (name == NULL) | |
b34976b6 | 1409 | return FALSE; |
252b5132 RH |
1410 | |
1411 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1412 | && strcmp (bfd_get_section_name (input_bfd, | |
1413 | input_section), | |
1414 | name + 5) == 0); | |
1415 | ||
1416 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1417 | BFD_ASSERT (sreloc != NULL); | |
1418 | } | |
1419 | ||
b34976b6 | 1420 | skip = FALSE; |
252b5132 | 1421 | |
c629eae0 JJ |
1422 | outrel.r_offset = |
1423 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1424 | rel->r_offset); | |
1425 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1426 | skip = TRUE; |
0bb2d96a | 1427 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1428 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1429 | outrel.r_offset += (input_section->output_section->vma |
1430 | + input_section->output_offset); | |
1431 | ||
20278fa3 JJ |
1432 | /* Optimize unaligned reloc usage now that we know where |
1433 | it finally resides. */ | |
1434 | switch (r_type) | |
1435 | { | |
1436 | case R_SPARC_16: | |
1437 | if (outrel.r_offset & 1) | |
1438 | r_type = R_SPARC_UA16; | |
1439 | break; | |
1440 | case R_SPARC_UA16: | |
1441 | if (!(outrel.r_offset & 1)) | |
1442 | r_type = R_SPARC_16; | |
1443 | break; | |
1444 | case R_SPARC_32: | |
1445 | if (outrel.r_offset & 3) | |
1446 | r_type = R_SPARC_UA32; | |
1447 | break; | |
1448 | case R_SPARC_UA32: | |
1449 | if (!(outrel.r_offset & 3)) | |
1450 | r_type = R_SPARC_32; | |
1451 | break; | |
b88a866a JJ |
1452 | case R_SPARC_DISP8: |
1453 | case R_SPARC_DISP16: | |
1454 | case R_SPARC_DISP32: | |
1455 | /* If the symbol is not dynamic, we should not keep | |
1456 | a dynamic relocation. But an .rela.* slot has been | |
1457 | allocated for it, output R_SPARC_NONE. | |
1458 | FIXME: Add code tracking needed dynamic relocs as | |
1459 | e.g. i386 has. */ | |
1460 | if (h->dynindx == -1) | |
b34976b6 | 1461 | skip = TRUE, relocate = TRUE; |
b88a866a | 1462 | break; |
20278fa3 JJ |
1463 | } |
1464 | ||
252b5132 RH |
1465 | if (skip) |
1466 | memset (&outrel, 0, sizeof outrel); | |
1467 | /* h->dynindx may be -1 if the symbol was marked to | |
1468 | become local. */ | |
bd5e6e7e | 1469 | else if (h != NULL && ! is_plt |
252b5132 RH |
1470 | && ((! info->symbolic && h->dynindx != -1) |
1471 | || (h->elf_link_hash_flags | |
1472 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1473 | { | |
1474 | BFD_ASSERT (h->dynindx != -1); | |
1475 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1476 | outrel.r_addend = rel->r_addend; | |
1477 | } | |
1478 | else | |
1479 | { | |
1fbc4a84 | 1480 | if (r_type == R_SPARC_32) |
252b5132 RH |
1481 | { |
1482 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1483 | outrel.r_addend = relocation + rel->r_addend; | |
1484 | } | |
1485 | else | |
1486 | { | |
1487 | long indx; | |
1488 | ||
bd5e6e7e JJ |
1489 | if (is_plt) |
1490 | sec = splt; | |
1491 | else if (h == NULL) | |
252b5132 RH |
1492 | sec = local_sections[r_symndx]; |
1493 | else | |
1494 | { | |
1495 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1496 | || (h->root.type | |
1497 | == bfd_link_hash_defweak)); | |
1498 | sec = h->root.u.def.section; | |
1499 | } | |
1500 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1501 | indx = 0; | |
1502 | else if (sec == NULL || sec->owner == NULL) | |
1503 | { | |
1504 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1505 | return FALSE; |
252b5132 RH |
1506 | } |
1507 | else | |
1508 | { | |
1509 | asection *osec; | |
1510 | ||
1511 | osec = sec->output_section; | |
1512 | indx = elf_section_data (osec)->dynindx; | |
1513 | ||
1514 | /* FIXME: we really should be able to link non-pic | |
1515 | shared libraries. */ | |
1516 | if (indx == 0) | |
1517 | { | |
1518 | BFD_FAIL (); | |
1519 | (*_bfd_error_handler) | |
1520 | (_("%s: probably compiled without -fPIC?"), | |
8f615d07 | 1521 | bfd_archive_filename (input_bfd)); |
252b5132 | 1522 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1523 | return FALSE; |
252b5132 RH |
1524 | } |
1525 | } | |
1526 | ||
1527 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
840a9995 | 1528 | outrel.r_addend = relocation + rel->r_addend; |
252b5132 RH |
1529 | } |
1530 | } | |
1531 | ||
b34976b6 AM |
1532 | loc = sreloc->contents; |
1533 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1534 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1535 | |
1536 | /* This reloc will be computed at runtime, so there's no | |
20278fa3 | 1537 | need to do anything now. */ |
0bb2d96a JJ |
1538 | if (! relocate) |
1539 | continue; | |
252b5132 RH |
1540 | } |
1541 | break; | |
1542 | ||
1543 | default: | |
1544 | break; | |
1545 | } | |
1546 | ||
239e1f3a AM |
1547 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1548 | because such sections are not SEC_ALLOC and thus ld.so will | |
1549 | not process them. */ | |
e36f7d53 | 1550 | if (unresolved_reloc |
239e1f3a | 1551 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
e36f7d53 RH |
1552 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
1553 | (*_bfd_error_handler) | |
1554 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
1555 | bfd_archive_filename (input_bfd), | |
1556 | bfd_get_section_name (input_bfd, input_section), | |
1557 | (long) rel->r_offset, | |
1558 | h->root.root.string); | |
1559 | ||
f7775d95 | 1560 | r = bfd_reloc_continue; |
252b5132 RH |
1561 | if (r_type == R_SPARC_WDISP16) |
1562 | { | |
1563 | bfd_vma x; | |
1564 | ||
1565 | relocation += rel->r_addend; | |
1566 | relocation -= (input_section->output_section->vma | |
1567 | + input_section->output_offset); | |
1568 | relocation -= rel->r_offset; | |
1569 | ||
1570 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1571 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
1572 | | ((relocation >> 2) & 0x3fff)); | |
1573 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1574 | ||
1575 | if ((bfd_signed_vma) relocation < - 0x40000 | |
1576 | || (bfd_signed_vma) relocation > 0x3ffff) | |
1577 | r = bfd_reloc_overflow; | |
1578 | else | |
1579 | r = bfd_reloc_ok; | |
1580 | } | |
1581 | else if (r_type == R_SPARC_REV32) | |
1582 | { | |
1583 | bfd_vma x; | |
1584 | ||
1585 | relocation = relocation + rel->r_addend; | |
1586 | ||
1587 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1588 | x = x + relocation; | |
1589 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); | |
1590 | r = bfd_reloc_ok; | |
1591 | } | |
f7775d95 JJ |
1592 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) |
1593 | && SEC_DO_RELAX (input_section) | |
1594 | && rel->r_offset + 4 < input_section->_raw_size) | |
1595 | { | |
1596 | #define G0 0 | |
1597 | #define O7 15 | |
1598 | #define XCC (2 << 20) | |
1599 | #define COND(x) (((x)&0xf)<<25) | |
1600 | #define CONDA COND(0x8) | |
1601 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) | |
1602 | #define INSN_BA (F2(0,2) | CONDA) | |
1603 | #define INSN_OR F3(2, 0x2, 0) | |
1604 | #define INSN_NOP F2(0,4) | |
1605 | ||
1606 | bfd_vma x, y; | |
1607 | ||
1608 | /* If the instruction is a call with either: | |
1609 | restore | |
1610 | arithmetic instruction with rd == %o7 | |
1611 | where rs1 != %o7 and rs2 if it is register != %o7 | |
1612 | then we can optimize if the call destination is near | |
1613 | by changing the call into a branch always. */ | |
1614 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1615 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
1616 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) | |
1617 | { | |
1618 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ | |
1619 | || ((y & OP3(0x28)) == 0 /* arithmetic */ | |
1620 | && (y & RD(~0)) == RD(O7))) | |
1621 | && (y & RS1(~0)) != RS1(O7) | |
1622 | && ((y & F3I(~0)) | |
1623 | || (y & RS2(~0)) != RS2(O7))) | |
1624 | { | |
1625 | bfd_vma reloc; | |
1626 | ||
1627 | reloc = relocation + rel->r_addend - rel->r_offset; | |
1628 | reloc -= (input_section->output_section->vma | |
1629 | + input_section->output_offset); | |
1630 | ||
1631 | /* Ensure the reloc fits into simm22. */ | |
1632 | if ((reloc & 3) == 0 | |
1633 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 | |
1634 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) | |
1635 | { | |
1636 | reloc >>= 2; | |
435b1e90 | 1637 | |
f7775d95 JJ |
1638 | /* Check whether it fits into simm19 on v9. */ |
1639 | if (((reloc & 0x3c0000) == 0 | |
1640 | || (reloc & 0x3c0000) == 0x3c0000) | |
1641 | && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) | |
1642 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ | |
1643 | else | |
1644 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ | |
1645 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1646 | r = bfd_reloc_ok; | |
1647 | if (rel->r_offset >= 4 | |
1648 | && (y & (0xffffffff ^ RS1(~0))) | |
1649 | == (INSN_OR | RD(O7) | RS2(G0))) | |
1650 | { | |
1651 | bfd_vma z; | |
1652 | unsigned int reg; | |
1653 | ||
1654 | z = bfd_get_32 (input_bfd, | |
1655 | contents + rel->r_offset - 4); | |
1656 | if ((z & (0xffffffff ^ RD(~0))) | |
1657 | != (INSN_OR | RS1(O7) | RS2(G0))) | |
1658 | break; | |
1659 | ||
1660 | /* The sequence was | |
1661 | or %o7, %g0, %rN | |
1662 | call foo | |
1663 | or %rN, %g0, %o7 | |
1664 | ||
1665 | If call foo was replaced with ba, replace | |
1666 | or %rN, %g0, %o7 with nop. */ | |
1667 | ||
1668 | reg = (y & RS1(~0)) >> 14; | |
1669 | if (reg != ((z & RD(~0)) >> 25) | |
1670 | || reg == G0 || reg == O7) | |
1671 | break; | |
1672 | ||
dc810e39 | 1673 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, |
f7775d95 JJ |
1674 | contents + rel->r_offset + 4); |
1675 | } | |
1676 | ||
1677 | } | |
1678 | } | |
1679 | } | |
1680 | } | |
1681 | ||
1682 | if (r == bfd_reloc_continue) | |
252b5132 RH |
1683 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1684 | contents, rel->r_offset, | |
1685 | relocation, rel->r_addend); | |
1686 | ||
252b5132 RH |
1687 | if (r != bfd_reloc_ok) |
1688 | { | |
1689 | switch (r) | |
1690 | { | |
1691 | default: | |
1692 | case bfd_reloc_outofrange: | |
1693 | abort (); | |
1694 | case bfd_reloc_overflow: | |
1695 | { | |
1696 | const char *name; | |
1697 | ||
1698 | if (h != NULL) | |
1699 | name = h->root.root.string; | |
1700 | else | |
1701 | { | |
1702 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1703 | symtab_hdr->sh_link, | |
1704 | sym->st_name); | |
1705 | if (name == NULL) | |
b34976b6 | 1706 | return FALSE; |
252b5132 RH |
1707 | if (*name == '\0') |
1708 | name = bfd_section_name (input_bfd, sec); | |
1709 | } | |
1710 | if (! ((*info->callbacks->reloc_overflow) | |
1711 | (info, name, howto->name, (bfd_vma) 0, | |
1712 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1713 | return FALSE; |
252b5132 RH |
1714 | } |
1715 | break; | |
1716 | } | |
1717 | } | |
1718 | } | |
1719 | ||
b34976b6 | 1720 | return TRUE; |
252b5132 RH |
1721 | } |
1722 | ||
1723 | /* Finish up dynamic symbol handling. We set the contents of various | |
1724 | dynamic sections here. */ | |
1725 | ||
b34976b6 | 1726 | static bfd_boolean |
252b5132 RH |
1727 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) |
1728 | bfd *output_bfd; | |
1729 | struct bfd_link_info *info; | |
1730 | struct elf_link_hash_entry *h; | |
1731 | Elf_Internal_Sym *sym; | |
1732 | { | |
1733 | bfd *dynobj; | |
1734 | ||
1735 | dynobj = elf_hash_table (info)->dynobj; | |
1736 | ||
1737 | if (h->plt.offset != (bfd_vma) -1) | |
1738 | { | |
1739 | asection *splt; | |
1740 | asection *srela; | |
1741 | Elf_Internal_Rela rela; | |
b34976b6 | 1742 | bfd_byte *loc; |
252b5132 RH |
1743 | |
1744 | /* This symbol has an entry in the procedure linkage table. Set | |
1745 | it up. */ | |
1746 | ||
1747 | BFD_ASSERT (h->dynindx != -1); | |
1748 | ||
1749 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1750 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1751 | BFD_ASSERT (splt != NULL && srela != NULL); | |
1752 | ||
1753 | /* Fill in the entry in the procedure linkage table. */ | |
1754 | bfd_put_32 (output_bfd, | |
1755 | PLT_ENTRY_WORD0 + h->plt.offset, | |
1756 | splt->contents + h->plt.offset); | |
1757 | bfd_put_32 (output_bfd, | |
1758 | (PLT_ENTRY_WORD1 | |
1759 | + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)), | |
1760 | splt->contents + h->plt.offset + 4); | |
dc810e39 | 1761 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, |
252b5132 RH |
1762 | splt->contents + h->plt.offset + 8); |
1763 | ||
1764 | /* Fill in the entry in the .rela.plt section. */ | |
1765 | rela.r_offset = (splt->output_section->vma | |
1766 | + splt->output_offset | |
1767 | + h->plt.offset); | |
1768 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); | |
1769 | rela.r_addend = 0; | |
b34976b6 AM |
1770 | loc = srela->contents; |
1771 | loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela); | |
1772 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1773 | |
1774 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1775 | { | |
1776 | /* Mark the symbol as undefined, rather than as defined in | |
1777 | the .plt section. Leave the value alone. */ | |
1778 | sym->st_shndx = SHN_UNDEF; | |
8701c1bc JJ |
1779 | /* If the symbol is weak, we do need to clear the value. |
1780 | Otherwise, the PLT entry would provide a definition for | |
1781 | the symbol even if the symbol wasn't defined anywhere, | |
1782 | and so the symbol would never be NULL. */ | |
1783 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) | |
1784 | == 0) | |
1785 | sym->st_value = 0; | |
252b5132 RH |
1786 | } |
1787 | } | |
1788 | ||
1789 | if (h->got.offset != (bfd_vma) -1) | |
1790 | { | |
1791 | asection *sgot; | |
1792 | asection *srela; | |
1793 | Elf_Internal_Rela rela; | |
b34976b6 | 1794 | bfd_byte *loc; |
252b5132 RH |
1795 | |
1796 | /* This symbol has an entry in the global offset table. Set it | |
1797 | up. */ | |
1798 | ||
1799 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1800 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1801 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1802 | ||
1803 | rela.r_offset = (sgot->output_section->vma | |
1804 | + sgot->output_offset | |
dc810e39 | 1805 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1806 | |
1807 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1808 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1809 | the symbol was forced to be local because of a version file. | |
1810 | The entry in the global offset table will already have been | |
1811 | initialized in the relocate_section function. */ | |
1812 | if (info->shared | |
1813 | && (info->symbolic || h->dynindx == -1) | |
1814 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
6b3ac709 JJ |
1815 | { |
1816 | asection *sec = h->root.u.def.section; | |
1817 | rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1818 | rela.r_addend = (h->root.u.def.value | |
1819 | + sec->output_section->vma | |
1820 | + sec->output_offset); | |
1821 | } | |
252b5132 RH |
1822 | else |
1823 | { | |
252b5132 | 1824 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); |
6b3ac709 | 1825 | rela.r_addend = 0; |
252b5132 RH |
1826 | } |
1827 | ||
6b3ac709 JJ |
1828 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
1829 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); | |
b34976b6 AM |
1830 | loc = srela->contents; |
1831 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1832 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1833 | } |
1834 | ||
1835 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1836 | { | |
1837 | asection *s; | |
1838 | Elf_Internal_Rela rela; | |
b34976b6 | 1839 | bfd_byte *loc; |
252b5132 RH |
1840 | |
1841 | /* This symbols needs a copy reloc. Set it up. */ | |
1842 | ||
1843 | BFD_ASSERT (h->dynindx != -1); | |
1844 | ||
1845 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1846 | ".rela.bss"); | |
1847 | BFD_ASSERT (s != NULL); | |
1848 | ||
1849 | rela.r_offset = (h->root.u.def.value | |
1850 | + h->root.u.def.section->output_section->vma | |
1851 | + h->root.u.def.section->output_offset); | |
1852 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); | |
1853 | rela.r_addend = 0; | |
b34976b6 AM |
1854 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1855 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1856 | } |
1857 | ||
1858 | /* Mark some specially defined symbols as absolute. */ | |
1859 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1860 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
1861 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
1862 | sym->st_shndx = SHN_ABS; | |
1863 | ||
b34976b6 | 1864 | return TRUE; |
252b5132 RH |
1865 | } |
1866 | ||
1867 | /* Finish up the dynamic sections. */ | |
1868 | ||
b34976b6 | 1869 | static bfd_boolean |
252b5132 RH |
1870 | elf32_sparc_finish_dynamic_sections (output_bfd, info) |
1871 | bfd *output_bfd; | |
1872 | struct bfd_link_info *info; | |
1873 | { | |
1874 | bfd *dynobj; | |
1875 | asection *sdyn; | |
1876 | asection *sgot; | |
1877 | ||
1878 | dynobj = elf_hash_table (info)->dynobj; | |
1879 | ||
1880 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1881 | ||
1882 | if (elf_hash_table (info)->dynamic_sections_created) | |
1883 | { | |
1884 | asection *splt; | |
1885 | Elf32_External_Dyn *dyncon, *dynconend; | |
1886 | ||
1887 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1888 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1889 | ||
1890 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1891 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1892 | for (; dyncon < dynconend; dyncon++) | |
1893 | { | |
1894 | Elf_Internal_Dyn dyn; | |
1895 | const char *name; | |
b34976b6 | 1896 | bfd_boolean size; |
252b5132 RH |
1897 | |
1898 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1899 | ||
1900 | switch (dyn.d_tag) | |
1901 | { | |
b34976b6 AM |
1902 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; |
1903 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; | |
1904 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; | |
1905 | default: name = NULL; size = FALSE; break; | |
252b5132 RH |
1906 | } |
1907 | ||
1908 | if (name != NULL) | |
1909 | { | |
1910 | asection *s; | |
1911 | ||
1912 | s = bfd_get_section_by_name (output_bfd, name); | |
1913 | if (s == NULL) | |
1914 | dyn.d_un.d_val = 0; | |
1915 | else | |
1916 | { | |
1917 | if (! size) | |
1918 | dyn.d_un.d_ptr = s->vma; | |
1919 | else | |
1920 | { | |
1921 | if (s->_cooked_size != 0) | |
1922 | dyn.d_un.d_val = s->_cooked_size; | |
1923 | else | |
1924 | dyn.d_un.d_val = s->_raw_size; | |
1925 | } | |
1926 | } | |
1927 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1928 | } | |
1929 | } | |
1930 | ||
1931 | /* Clear the first four entries in the procedure linkage table, | |
1932 | and put a nop in the last four bytes. */ | |
1933 | if (splt->_raw_size > 0) | |
1934 | { | |
1935 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); | |
dc810e39 | 1936 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, |
252b5132 RH |
1937 | splt->contents + splt->_raw_size - 4); |
1938 | } | |
1939 | ||
1940 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1941 | PLT_ENTRY_SIZE; | |
1942 | } | |
1943 | ||
1944 | /* Set the first entry in the global offset table to the address of | |
1945 | the dynamic section. */ | |
1946 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1947 | BFD_ASSERT (sgot != NULL); | |
1948 | if (sgot->_raw_size > 0) | |
1949 | { | |
1950 | if (sdyn == NULL) | |
1951 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1952 | else | |
1953 | bfd_put_32 (output_bfd, | |
1954 | sdyn->output_section->vma + sdyn->output_offset, | |
1955 | sgot->contents); | |
1956 | } | |
1957 | ||
1958 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1959 | ||
b34976b6 | 1960 | return TRUE; |
252b5132 RH |
1961 | } |
1962 | \f | |
1963 | /* Functions for dealing with the e_flags field. | |
1964 | ||
1965 | We don't define set_private_flags or copy_private_bfd_data because | |
1966 | the only currently defined values are based on the bfd mach number, | |
1967 | so we use the latter instead and defer setting e_flags until the | |
1968 | file is written out. */ | |
1969 | ||
1970 | /* Merge backend specific data from an object file to the output | |
1971 | object file when linking. */ | |
1972 | ||
b34976b6 | 1973 | static bfd_boolean |
252b5132 RH |
1974 | elf32_sparc_merge_private_bfd_data (ibfd, obfd) |
1975 | bfd *ibfd; | |
1976 | bfd *obfd; | |
1977 | { | |
b34976b6 | 1978 | bfd_boolean error; |
5f771d47 ILT |
1979 | /* FIXME: This should not be static. */ |
1980 | static unsigned long previous_ibfd_e_flags = (unsigned long) -1; | |
252b5132 RH |
1981 | |
1982 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1983 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1984 | return TRUE; |
252b5132 | 1985 | |
b34976b6 | 1986 | error = FALSE; |
252b5132 | 1987 | |
252b5132 RH |
1988 | if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9) |
1989 | { | |
b34976b6 | 1990 | error = TRUE; |
252b5132 RH |
1991 | (*_bfd_error_handler) |
1992 | (_("%s: compiled for a 64 bit system and target is 32 bit"), | |
8f615d07 | 1993 | bfd_archive_filename (ibfd)); |
252b5132 | 1994 | } |
37fb6db1 ILT |
1995 | else if ((ibfd->flags & DYNAMIC) == 0) |
1996 | { | |
1997 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
1998 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); | |
1999 | } | |
252b5132 RH |
2000 | |
2001 | if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) | |
2002 | != previous_ibfd_e_flags) | |
5f771d47 | 2003 | && previous_ibfd_e_flags != (unsigned long) -1) |
252b5132 RH |
2004 | { |
2005 | (*_bfd_error_handler) | |
2006 | (_("%s: linking little endian files with big endian files"), | |
8f615d07 | 2007 | bfd_archive_filename (ibfd)); |
b34976b6 | 2008 | error = TRUE; |
252b5132 RH |
2009 | } |
2010 | previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; | |
2011 | ||
2012 | if (error) | |
2013 | { | |
2014 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2015 | return FALSE; |
252b5132 RH |
2016 | } |
2017 | ||
b34976b6 | 2018 | return TRUE; |
252b5132 RH |
2019 | } |
2020 | \f | |
2021 | /* Set the right machine number. */ | |
2022 | ||
b34976b6 | 2023 | static bfd_boolean |
252b5132 RH |
2024 | elf32_sparc_object_p (abfd) |
2025 | bfd *abfd; | |
2026 | { | |
2027 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) | |
2028 | { | |
19f7b010 JJ |
2029 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
2030 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2031 | bfd_mach_sparc_v8plusb); | |
2032 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
252b5132 RH |
2033 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
2034 | bfd_mach_sparc_v8plusa); | |
2035 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) | |
2036 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2037 | bfd_mach_sparc_v8plus); | |
2038 | else | |
b34976b6 | 2039 | return FALSE; |
252b5132 RH |
2040 | } |
2041 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) | |
2042 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
20278fa3 | 2043 | bfd_mach_sparc_sparclite_le); |
252b5132 RH |
2044 | else |
2045 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); | |
2046 | } | |
2047 | ||
2048 | /* The final processing done just before writing out the object file. | |
2049 | We need to set the e_machine field appropriately. */ | |
2050 | ||
2051 | static void | |
2052 | elf32_sparc_final_write_processing (abfd, linker) | |
2053 | bfd *abfd; | |
b34976b6 | 2054 | bfd_boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
2055 | { |
2056 | switch (bfd_get_mach (abfd)) | |
2057 | { | |
2058 | case bfd_mach_sparc : | |
2059 | break; /* nothing to do */ | |
2060 | case bfd_mach_sparc_v8plus : | |
2061 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2062 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2063 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; | |
2064 | break; | |
2065 | case bfd_mach_sparc_v8plusa : | |
2066 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2067 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2068 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; | |
2069 | break; | |
19f7b010 JJ |
2070 | case bfd_mach_sparc_v8plusb : |
2071 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2072 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2073 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 | |
2074 | | EF_SPARC_SUN_US3; | |
2075 | break; | |
252b5132 RH |
2076 | case bfd_mach_sparc_sparclite_le : |
2077 | elf_elfheader (abfd)->e_machine = EM_SPARC; | |
2078 | elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; | |
2079 | break; | |
2080 | default : | |
2081 | abort (); | |
2082 | break; | |
2083 | } | |
2084 | } | |
db6751f2 JJ |
2085 | |
2086 | static enum elf_reloc_type_class | |
f51e552e AM |
2087 | elf32_sparc_reloc_type_class (rela) |
2088 | const Elf_Internal_Rela *rela; | |
db6751f2 | 2089 | { |
f51e552e | 2090 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
db6751f2 JJ |
2091 | { |
2092 | case R_SPARC_RELATIVE: | |
2093 | return reloc_class_relative; | |
2094 | case R_SPARC_JMP_SLOT: | |
2095 | return reloc_class_plt; | |
2096 | case R_SPARC_COPY: | |
2097 | return reloc_class_copy; | |
2098 | default: | |
2099 | return reloc_class_normal; | |
2100 | } | |
2101 | } | |
252b5132 RH |
2102 | \f |
2103 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec | |
2104 | #define TARGET_BIG_NAME "elf32-sparc" | |
2105 | #define ELF_ARCH bfd_arch_sparc | |
2106 | #define ELF_MACHINE_CODE EM_SPARC | |
2107 | #define ELF_MACHINE_ALT1 EM_SPARC32PLUS | |
2108 | #define ELF_MAXPAGESIZE 0x10000 | |
2109 | ||
2110 | #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup | |
f7775d95 | 2111 | #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section |
252b5132 RH |
2112 | #define elf_info_to_howto elf32_sparc_info_to_howto |
2113 | #define elf_backend_create_dynamic_sections \ | |
2114 | _bfd_elf_create_dynamic_sections | |
2115 | #define elf_backend_check_relocs elf32_sparc_check_relocs | |
2116 | #define elf_backend_adjust_dynamic_symbol \ | |
2117 | elf32_sparc_adjust_dynamic_symbol | |
2118 | #define elf_backend_size_dynamic_sections \ | |
2119 | elf32_sparc_size_dynamic_sections | |
2120 | #define elf_backend_relocate_section elf32_sparc_relocate_section | |
2121 | #define elf_backend_finish_dynamic_symbol \ | |
2122 | elf32_sparc_finish_dynamic_symbol | |
2123 | #define elf_backend_finish_dynamic_sections \ | |
2124 | elf32_sparc_finish_dynamic_sections | |
2125 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2126 | elf32_sparc_merge_private_bfd_data | |
2127 | #define elf_backend_object_p elf32_sparc_object_p | |
2128 | #define elf_backend_final_write_processing \ | |
2129 | elf32_sparc_final_write_processing | |
2130 | #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook | |
2131 | #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook | |
db6751f2 | 2132 | #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class |
252b5132 RH |
2133 | |
2134 | #define elf_backend_can_gc_sections 1 | |
2135 | #define elf_backend_want_got_plt 0 | |
2136 | #define elf_backend_plt_readonly 0 | |
2137 | #define elf_backend_want_plt_sym 1 | |
2138 | #define elf_backend_got_header_size 4 | |
2139 | #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE) | |
f0fe0e16 | 2140 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2141 | |
2142 | #include "elf32-target.h" |