Commit | Line | Data |
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252b5132 | 1 | /* SPARC-specific support for 32-bit ELF |
f0abc2a1 AM |
2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
3 | 2003 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 *)); |
f0abc2a1 AM |
40 | static bfd_boolean elf32_sparc_new_section_hook |
41 | PARAMS ((bfd *, asection *)); | |
b34976b6 AM |
42 | static bfd_boolean elf32_sparc_relax_section |
43 | PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); | |
44 | static bfd_boolean elf32_sparc_relocate_section | |
252b5132 RH |
45 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
46 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 47 | static bfd_boolean elf32_sparc_finish_dynamic_symbol |
252b5132 RH |
48 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
49 | Elf_Internal_Sym *)); | |
b34976b6 | 50 | static bfd_boolean elf32_sparc_finish_dynamic_sections |
252b5132 | 51 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 AM |
52 | static bfd_boolean elf32_sparc_merge_private_bfd_data |
53 | PARAMS ((bfd *, bfd *)); | |
54 | static bfd_boolean elf32_sparc_object_p | |
252b5132 RH |
55 | PARAMS ((bfd *)); |
56 | static void elf32_sparc_final_write_processing | |
b34976b6 | 57 | PARAMS ((bfd *, bfd_boolean)); |
db6751f2 | 58 | static enum elf_reloc_type_class elf32_sparc_reloc_type_class |
f51e552e | 59 | PARAMS ((const Elf_Internal_Rela *)); |
917583ad | 60 | static asection * elf32_sparc_gc_mark_hook |
1e2f5b6e | 61 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
917583ad | 62 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 63 | static bfd_boolean elf32_sparc_gc_sweep_hook |
917583ad NC |
64 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
65 | const Elf_Internal_Rela *)); | |
252b5132 RH |
66 | \f |
67 | /* The relocation "howto" table. */ | |
68 | ||
69 | static bfd_reloc_status_type sparc_elf_notsupported_reloc | |
70 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
71 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
72 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
73 | ||
74 | reloc_howto_type _bfd_sparc_elf_howto_table[] = | |
75 | { | |
b34976b6 AM |
76 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
77 | HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), | |
78 | HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), | |
79 | HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), | |
80 | HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), | |
81 | HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), | |
82 | HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), | |
83 | HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), | |
84 | HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), | |
85 | HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), | |
86 | HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), | |
87 | HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), | |
88 | HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), | |
89 | HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), | |
90 | HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), | |
91 | HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), | |
92 | HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), | |
93 | HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), | |
94 | HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), | |
95 | HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), | |
96 | 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), | |
97 | 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), | |
98 | HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), | |
99 | HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), | |
100 | HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), | |
101 | HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), | |
102 | HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), | |
103 | HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), | |
104 | HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), | |
105 | HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), | |
106 | HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), | |
107 | 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 |
108 | /* These are for sparc64 in a 64 bit environment. |
109 | Values need to be here because the table is indexed by reloc number. */ | |
b34976b6 AM |
110 | HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE), |
111 | HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE), | |
112 | HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE), | |
113 | HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE), | |
114 | HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE), | |
115 | 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), | |
116 | 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), | |
117 | 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 |
118 | /* End sparc64 in 64 bit environment values. |
119 | The following are for sparc64 in a 32 bit environment. */ | |
b34976b6 AM |
120 | HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), |
121 | HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), | |
122 | 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), | |
123 | HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), | |
124 | HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), | |
125 | HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,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_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), | |
133 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), | |
134 | HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE), | |
135 | HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), | |
136 | 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 |
137 | }; |
138 | static reloc_howto_type elf32_sparc_vtinherit_howto = | |
b34976b6 | 139 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
252b5132 | 140 | static reloc_howto_type elf32_sparc_vtentry_howto = |
b34976b6 | 141 | 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 | 142 | |
252b5132 RH |
143 | struct elf_reloc_map { |
144 | bfd_reloc_code_real_type bfd_reloc_val; | |
145 | unsigned char elf_reloc_val; | |
146 | }; | |
147 | ||
dc810e39 | 148 | static const struct elf_reloc_map sparc_reloc_map[] = |
252b5132 RH |
149 | { |
150 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
151 | { BFD_RELOC_16, R_SPARC_16, }, | |
bd5e6e7e | 152 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, |
252b5132 RH |
153 | { BFD_RELOC_8, R_SPARC_8 }, |
154 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
155 | { BFD_RELOC_CTOR, R_SPARC_32 }, | |
156 | { BFD_RELOC_32, R_SPARC_32 }, | |
157 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
158 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
159 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
160 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
bd5e6e7e | 161 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, |
252b5132 RH |
162 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
163 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
164 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
165 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
166 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
167 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
168 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
169 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
170 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
171 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
172 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
173 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
174 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
0f2712ed NC |
175 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
176 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, | |
177 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, | |
178 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, | |
179 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, | |
180 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, | |
181 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, | |
182 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, | |
183 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, | |
184 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, | |
185 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, | |
186 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, | |
187 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, | |
188 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, | |
189 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, | |
190 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, | |
191 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, | |
192 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, | |
193 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, | |
194 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, | |
195 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, | |
252b5132 RH |
196 | }; |
197 | ||
198 | static reloc_howto_type * | |
199 | elf32_sparc_reloc_type_lookup (abfd, code) | |
5f771d47 | 200 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
201 | bfd_reloc_code_real_type code; |
202 | { | |
203 | unsigned int i; | |
435b1e90 | 204 | |
252b5132 RH |
205 | switch (code) |
206 | { | |
207 | case BFD_RELOC_VTABLE_INHERIT: | |
208 | return &elf32_sparc_vtinherit_howto; | |
209 | ||
210 | case BFD_RELOC_VTABLE_ENTRY: | |
211 | return &elf32_sparc_vtentry_howto; | |
212 | ||
213 | default: | |
214 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
215 | { | |
216 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
217 | return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
218 | } | |
219 | } | |
220 | bfd_set_error (bfd_error_bad_value); | |
221 | return NULL; | |
222 | } | |
223 | ||
224 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, | |
225 | and elf64-sparc.c has its own copy. */ | |
226 | ||
227 | static void | |
228 | elf32_sparc_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 229 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
230 | arelent *cache_ptr; |
231 | Elf_Internal_Rela *dst; | |
232 | { | |
60dac299 RH |
233 | switch (ELF32_R_TYPE(dst->r_info)) |
234 | { | |
235 | case R_SPARC_GNU_VTINHERIT: | |
236 | cache_ptr->howto = &elf32_sparc_vtinherit_howto; | |
237 | break; | |
238 | ||
239 | case R_SPARC_GNU_VTENTRY: | |
240 | cache_ptr->howto = &elf32_sparc_vtentry_howto; | |
241 | break; | |
242 | ||
243 | default: | |
244 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); | |
245 | cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
246 | } | |
252b5132 RH |
247 | } |
248 | \f | |
249 | /* For unsupported relocs. */ | |
250 | ||
251 | static bfd_reloc_status_type | |
252 | sparc_elf_notsupported_reloc (abfd, | |
253 | reloc_entry, | |
254 | symbol, | |
255 | data, | |
256 | input_section, | |
257 | output_bfd, | |
258 | error_message) | |
5f771d47 ILT |
259 | bfd *abfd ATTRIBUTE_UNUSED; |
260 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
261 | asymbol *symbol ATTRIBUTE_UNUSED; | |
262 | PTR data ATTRIBUTE_UNUSED; | |
263 | asection *input_section ATTRIBUTE_UNUSED; | |
264 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
265 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
266 | { |
267 | return bfd_reloc_notsupported; | |
268 | } | |
269 | ||
270 | /* Handle the WDISP16 reloc. */ | |
271 | ||
272 | static bfd_reloc_status_type | |
273 | sparc_elf_wdisp16_reloc (abfd, | |
274 | reloc_entry, | |
275 | symbol, | |
276 | data, | |
277 | input_section, | |
278 | output_bfd, | |
279 | error_message) | |
280 | bfd *abfd; | |
281 | arelent *reloc_entry; | |
282 | asymbol *symbol; | |
283 | PTR data; | |
284 | asection *input_section; | |
285 | bfd *output_bfd; | |
5f771d47 | 286 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
287 | { |
288 | bfd_vma relocation; | |
289 | bfd_vma x; | |
290 | ||
291 | if (output_bfd != (bfd *) NULL | |
292 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
293 | && (! reloc_entry->howto->partial_inplace | |
294 | || reloc_entry->addend == 0)) | |
295 | { | |
296 | reloc_entry->address += input_section->output_offset; | |
297 | return bfd_reloc_ok; | |
298 | } | |
299 | ||
300 | if (output_bfd != NULL) | |
301 | return bfd_reloc_continue; | |
302 | ||
303 | if (reloc_entry->address > input_section->_cooked_size) | |
304 | return bfd_reloc_outofrange; | |
305 | ||
306 | relocation = (symbol->value | |
307 | + symbol->section->output_section->vma | |
308 | + symbol->section->output_offset); | |
309 | relocation += reloc_entry->addend; | |
310 | relocation -= (input_section->output_section->vma | |
311 | + input_section->output_offset); | |
312 | relocation -= reloc_entry->address; | |
313 | ||
314 | x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
315 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
316 | | ((relocation >> 2) & 0x3fff)); | |
317 | bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); | |
318 | ||
319 | if ((bfd_signed_vma) relocation < - 0x40000 | |
320 | || (bfd_signed_vma) relocation > 0x3ffff) | |
321 | return bfd_reloc_overflow; | |
322 | else | |
323 | return bfd_reloc_ok; | |
324 | } | |
325 | \f | |
326 | /* Functions for the SPARC ELF linker. */ | |
327 | ||
328 | /* The name of the dynamic interpreter. This is put in the .interp | |
329 | section. */ | |
330 | ||
331 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
332 | ||
333 | /* The nop opcode we use. */ | |
334 | ||
335 | #define SPARC_NOP 0x01000000 | |
336 | ||
337 | /* The size in bytes of an entry in the procedure linkage table. */ | |
338 | ||
339 | #define PLT_ENTRY_SIZE 12 | |
340 | ||
341 | /* The first four entries in a procedure linkage table are reserved, | |
342 | and the initial contents are unimportant (we zero them out). | |
343 | Subsequent entries look like this. See the SVR4 ABI SPARC | |
344 | supplement to see how this works. */ | |
345 | ||
346 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ | |
347 | #define PLT_ENTRY_WORD0 0x03000000 | |
348 | /* b,a .plt0. We fill in the offset later. */ | |
349 | #define PLT_ENTRY_WORD1 0x30800000 | |
350 | /* nop. */ | |
351 | #define PLT_ENTRY_WORD2 SPARC_NOP | |
352 | ||
353 | /* Look through the relocs for a section during the first phase, and | |
354 | allocate space in the global offset table or procedure linkage | |
355 | table. */ | |
356 | ||
b34976b6 | 357 | static bfd_boolean |
252b5132 RH |
358 | elf32_sparc_check_relocs (abfd, info, sec, relocs) |
359 | bfd *abfd; | |
360 | struct bfd_link_info *info; | |
361 | asection *sec; | |
362 | const Elf_Internal_Rela *relocs; | |
363 | { | |
364 | bfd *dynobj; | |
365 | Elf_Internal_Shdr *symtab_hdr; | |
366 | struct elf_link_hash_entry **sym_hashes; | |
367 | bfd_vma *local_got_offsets; | |
368 | const Elf_Internal_Rela *rel; | |
369 | const Elf_Internal_Rela *rel_end; | |
370 | asection *sgot; | |
371 | asection *srelgot; | |
372 | asection *sreloc; | |
373 | ||
374 | if (info->relocateable) | |
b34976b6 | 375 | return TRUE; |
252b5132 RH |
376 | |
377 | dynobj = elf_hash_table (info)->dynobj; | |
378 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
379 | sym_hashes = elf_sym_hashes (abfd); | |
380 | local_got_offsets = elf_local_got_offsets (abfd); | |
381 | ||
382 | sgot = NULL; | |
383 | srelgot = NULL; | |
384 | sreloc = NULL; | |
385 | ||
386 | rel_end = relocs + sec->reloc_count; | |
387 | for (rel = relocs; rel < rel_end; rel++) | |
388 | { | |
389 | unsigned long r_symndx; | |
390 | struct elf_link_hash_entry *h; | |
391 | ||
392 | r_symndx = ELF32_R_SYM (rel->r_info); | |
393 | if (r_symndx < symtab_hdr->sh_info) | |
394 | h = NULL; | |
395 | else | |
396 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
397 | ||
398 | switch (ELF32_R_TYPE (rel->r_info)) | |
399 | { | |
400 | case R_SPARC_GOT10: | |
401 | case R_SPARC_GOT13: | |
402 | case R_SPARC_GOT22: | |
403 | /* This symbol requires a global offset table entry. */ | |
404 | ||
405 | if (dynobj == NULL) | |
406 | { | |
407 | /* Create the .got section. */ | |
408 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
409 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 410 | return FALSE; |
252b5132 RH |
411 | } |
412 | ||
413 | if (sgot == NULL) | |
414 | { | |
415 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
416 | BFD_ASSERT (sgot != NULL); | |
417 | } | |
418 | ||
419 | if (srelgot == NULL | |
420 | && (h != NULL || info->shared)) | |
421 | { | |
422 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
423 | if (srelgot == NULL) | |
424 | { | |
425 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
426 | if (srelgot == NULL | |
427 | || ! bfd_set_section_flags (dynobj, srelgot, | |
428 | (SEC_ALLOC | |
429 | | SEC_LOAD | |
430 | | SEC_HAS_CONTENTS | |
431 | | SEC_IN_MEMORY | |
432 | | SEC_LINKER_CREATED | |
433 | | SEC_READONLY)) | |
434 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 435 | return FALSE; |
252b5132 RH |
436 | } |
437 | } | |
438 | ||
439 | if (h != NULL) | |
440 | { | |
441 | if (h->got.offset != (bfd_vma) -1) | |
442 | { | |
443 | /* We have already allocated space in the .got. */ | |
444 | break; | |
445 | } | |
446 | h->got.offset = sgot->_raw_size; | |
447 | ||
448 | /* Make sure this symbol is output as a dynamic symbol. */ | |
449 | if (h->dynindx == -1) | |
450 | { | |
451 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 452 | return FALSE; |
252b5132 RH |
453 | } |
454 | ||
455 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
456 | } | |
457 | else | |
458 | { | |
459 | /* This is a global offset table entry for a local | |
460 | symbol. */ | |
461 | if (local_got_offsets == NULL) | |
462 | { | |
dc810e39 | 463 | bfd_size_type size; |
252b5132 RH |
464 | register unsigned int i; |
465 | ||
dc810e39 AM |
466 | size = symtab_hdr->sh_info; |
467 | size *= sizeof (bfd_vma); | |
252b5132 RH |
468 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); |
469 | if (local_got_offsets == NULL) | |
b34976b6 | 470 | return FALSE; |
252b5132 RH |
471 | elf_local_got_offsets (abfd) = local_got_offsets; |
472 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
473 | local_got_offsets[i] = (bfd_vma) -1; | |
474 | } | |
475 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
476 | { | |
477 | /* We have already allocated space in the .got. */ | |
478 | break; | |
479 | } | |
480 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
481 | ||
482 | if (info->shared) | |
483 | { | |
484 | /* If we are generating a shared object, we need to | |
485 | output a R_SPARC_RELATIVE reloc so that the | |
486 | dynamic linker can adjust this GOT entry. */ | |
487 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
488 | } | |
489 | } | |
490 | ||
491 | sgot->_raw_size += 4; | |
492 | ||
493 | /* If the .got section is more than 0x1000 bytes, we add | |
494 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
495 | bit relocations have a greater chance of working. */ | |
496 | if (sgot->_raw_size >= 0x1000 | |
497 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
498 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
499 | ||
500 | break; | |
501 | ||
bd5e6e7e | 502 | case R_SPARC_PLT32: |
252b5132 RH |
503 | case R_SPARC_WPLT30: |
504 | /* This symbol requires a procedure linkage table entry. We | |
505 | actually build the entry in adjust_dynamic_symbol, | |
506 | because this might be a case of linking PIC code without | |
507 | linking in any dynamic objects, in which case we don't | |
508 | need to generate a procedure linkage table after all. */ | |
509 | ||
510 | if (h == NULL) | |
511 | { | |
512 | /* The Solaris native assembler will generate a WPLT30 | |
513 | reloc for a local symbol if you assemble a call from | |
514 | one section to another when using -K pic. We treat | |
515 | it as WDISP30. */ | |
bd5e6e7e JJ |
516 | if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30) |
517 | goto r_sparc_plt32; | |
252b5132 RH |
518 | break; |
519 | } | |
520 | ||
521 | /* Make sure this symbol is output as a dynamic symbol. */ | |
522 | if (h->dynindx == -1) | |
523 | { | |
524 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 525 | return FALSE; |
252b5132 RH |
526 | } |
527 | ||
528 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
529 | ||
bd5e6e7e JJ |
530 | if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30) |
531 | goto r_sparc_plt32; | |
252b5132 RH |
532 | break; |
533 | ||
534 | case R_SPARC_PC10: | |
535 | case R_SPARC_PC22: | |
7843f00e ILT |
536 | if (h != NULL) |
537 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
538 | ||
252b5132 RH |
539 | if (h != NULL |
540 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
541 | break; | |
542 | /* Fall through. */ | |
543 | case R_SPARC_DISP8: | |
544 | case R_SPARC_DISP16: | |
545 | case R_SPARC_DISP32: | |
546 | case R_SPARC_WDISP30: | |
547 | case R_SPARC_WDISP22: | |
548 | case R_SPARC_WDISP19: | |
549 | case R_SPARC_WDISP16: | |
7843f00e ILT |
550 | if (h != NULL) |
551 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
552 | ||
252b5132 RH |
553 | /* If we are linking with -Bsymbolic, we do not need to copy |
554 | a PC relative reloc against a global symbol which is | |
555 | defined in an object we are including in the link (i.e., | |
556 | DEF_REGULAR is set). FIXME: At this point we have not | |
557 | seen all the input files, so it is possible that | |
558 | DEF_REGULAR is not set now but will be set later (it is | |
559 | never cleared). This needs to be handled as in | |
560 | elf32-i386.c. */ | |
561 | if (h == NULL | |
562 | || (info->symbolic | |
563 | && (h->elf_link_hash_flags | |
564 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
565 | break; | |
566 | /* Fall through. */ | |
567 | case R_SPARC_8: | |
568 | case R_SPARC_16: | |
569 | case R_SPARC_32: | |
570 | case R_SPARC_HI22: | |
571 | case R_SPARC_22: | |
572 | case R_SPARC_13: | |
573 | case R_SPARC_LO10: | |
0f2712ed | 574 | case R_SPARC_UA16: |
252b5132 | 575 | case R_SPARC_UA32: |
7843f00e ILT |
576 | if (h != NULL) |
577 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
578 | ||
bd5e6e7e | 579 | r_sparc_plt32: |
20278fa3 | 580 | if (info->shared && (sec->flags & SEC_ALLOC)) |
252b5132 RH |
581 | { |
582 | /* When creating a shared object, we must copy these | |
583 | relocs into the output file. We create a reloc | |
584 | section in dynobj and make room for the reloc. */ | |
585 | if (sreloc == NULL) | |
586 | { | |
587 | const char *name; | |
588 | ||
589 | name = (bfd_elf_string_from_elf_section | |
590 | (abfd, | |
591 | elf_elfheader (abfd)->e_shstrndx, | |
592 | elf_section_data (sec)->rel_hdr.sh_name)); | |
593 | if (name == NULL) | |
b34976b6 | 594 | return FALSE; |
252b5132 RH |
595 | |
596 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
597 | && strcmp (bfd_get_section_name (abfd, sec), | |
598 | name + 5) == 0); | |
599 | ||
600 | sreloc = bfd_get_section_by_name (dynobj, name); | |
601 | if (sreloc == NULL) | |
602 | { | |
603 | flagword flags; | |
604 | ||
605 | sreloc = bfd_make_section (dynobj, name); | |
606 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
607 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
608 | if ((sec->flags & SEC_ALLOC) != 0) | |
609 | flags |= SEC_ALLOC | SEC_LOAD; | |
610 | if (sreloc == NULL | |
611 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
612 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 613 | return FALSE; |
252b5132 | 614 | } |
db6751f2 JJ |
615 | if (sec->flags & SEC_READONLY) |
616 | info->flags |= DF_TEXTREL; | |
252b5132 RH |
617 | } |
618 | ||
619 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
620 | } | |
621 | ||
622 | break; | |
623 | ||
624 | case R_SPARC_GNU_VTINHERIT: | |
625 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 626 | return FALSE; |
252b5132 RH |
627 | break; |
628 | ||
629 | case R_SPARC_GNU_VTENTRY: | |
630 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 631 | return FALSE; |
252b5132 RH |
632 | break; |
633 | ||
634 | default: | |
635 | break; | |
636 | } | |
637 | } | |
638 | ||
b34976b6 | 639 | return TRUE; |
252b5132 RH |
640 | } |
641 | ||
642 | static asection * | |
1e2f5b6e AM |
643 | elf32_sparc_gc_mark_hook (sec, info, rel, h, sym) |
644 | asection *sec; | |
5f771d47 | 645 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
646 | Elf_Internal_Rela *rel; |
647 | struct elf_link_hash_entry *h; | |
648 | Elf_Internal_Sym *sym; | |
649 | { | |
252b5132 RH |
650 | if (h != NULL) |
651 | { | |
652 | switch (ELF32_R_TYPE (rel->r_info)) | |
653 | { | |
654 | case R_SPARC_GNU_VTINHERIT: | |
655 | case R_SPARC_GNU_VTENTRY: | |
656 | break; | |
657 | ||
658 | default: | |
659 | switch (h->root.type) | |
660 | { | |
661 | case bfd_link_hash_defined: | |
662 | case bfd_link_hash_defweak: | |
663 | return h->root.u.def.section; | |
664 | ||
665 | case bfd_link_hash_common: | |
666 | return h->root.u.c.p->section; | |
e049a0de ILT |
667 | |
668 | default: | |
669 | break; | |
252b5132 RH |
670 | } |
671 | } | |
672 | } | |
673 | else | |
1e2f5b6e | 674 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
675 | |
676 | return NULL; | |
677 | } | |
678 | ||
679 | /* Update the got entry reference counts for the section being removed. */ | |
b34976b6 | 680 | static bfd_boolean |
252b5132 RH |
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 | ||
b34976b6 | 738 | return TRUE; |
252b5132 RH |
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 | ||
b34976b6 | 747 | static bfd_boolean |
252b5132 RH |
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; | |
b34976b6 | 799 | return TRUE; |
252b5132 RH |
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); | |
b34976b6 | 813 | return FALSE; |
252b5132 RH |
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 | ||
b34976b6 | 839 | return TRUE; |
252b5132 RH |
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; | |
b34976b6 | 851 | return TRUE; |
252b5132 RH |
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) | |
b34976b6 | 862 | return TRUE; |
252b5132 | 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) | |
b34976b6 | 867 | return TRUE; |
7843f00e | 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)) | |
b34976b6 | 908 | return FALSE; |
252b5132 RH |
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 | ||
b34976b6 | 918 | return TRUE; |
252b5132 RH |
919 | } |
920 | ||
921 | /* Set the sizes of the dynamic sections. */ | |
922 | ||
b34976b6 | 923 | static bfd_boolean |
252b5132 | 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; | |
b34976b6 | 930 | bfd_boolean relplt; |
252b5132 RH |
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. */ | |
b34976b6 | 967 | relplt = FALSE; |
252b5132 RH |
968 | for (s = dynobj->sections; s != NULL; s = s->next) |
969 | { | |
970 | const char *name; | |
b34976b6 | 971 | bfd_boolean strip; |
252b5132 RH |
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 | ||
b34976b6 | 980 | strip = FALSE; |
252b5132 RH |
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. */ | |
b34976b6 | 995 | strip = TRUE; |
252b5132 RH |
996 | } |
997 | else | |
998 | { | |
252b5132 | 999 | if (strcmp (name, ".rela.plt") == 0) |
b34976b6 | 1000 | relplt = TRUE; |
252b5132 RH |
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 | 1027 | if (s->contents == NULL && s->_raw_size != 0) |
b34976b6 | 1028 | return FALSE; |
252b5132 RH |
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)) |
b34976b6 | 1044 | return FALSE; |
252b5132 RH |
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)) | |
b34976b6 | 1053 | return FALSE; |
252b5132 RH |
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))) | |
b34976b6 | 1059 | return FALSE; |
252b5132 | 1060 | |
db6751f2 | 1061 | if (info->flags & DF_TEXTREL) |
252b5132 | 1062 | { |
dc810e39 | 1063 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1064 | return FALSE; |
252b5132 RH |
1065 | } |
1066 | } | |
dc810e39 | 1067 | #undef add_dynamic_entry |
252b5132 | 1068 | |
b34976b6 | 1069 | return TRUE; |
252b5132 RH |
1070 | } |
1071 | ||
f0abc2a1 AM |
1072 | struct elf32_sparc_section_data |
1073 | { | |
1074 | struct bfd_elf_section_data elf; | |
1075 | unsigned int do_relax; | |
1076 | }; | |
1077 | ||
1078 | #define sec_do_relax(sec) \ | |
1079 | ((struct elf32_sparc_section_data *) (sec)->used_by_bfd)->do_relax | |
1080 | ||
1081 | static bfd_boolean | |
1082 | elf32_sparc_new_section_hook (abfd, sec) | |
1083 | bfd *abfd; | |
1084 | asection *sec; | |
1085 | { | |
1086 | struct elf32_sparc_section_data *sdata; | |
1087 | bfd_size_type amt = sizeof (*sdata); | |
1088 | ||
1089 | sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt); | |
1090 | if (sdata == NULL) | |
1091 | return FALSE; | |
1092 | sec->used_by_bfd = (PTR) sdata; | |
1093 | ||
1094 | return _bfd_elf_new_section_hook (abfd, sec); | |
1095 | } | |
f7775d95 | 1096 | |
b34976b6 | 1097 | static bfd_boolean |
f7775d95 JJ |
1098 | elf32_sparc_relax_section (abfd, section, link_info, again) |
1099 | bfd *abfd ATTRIBUTE_UNUSED; | |
1100 | asection *section ATTRIBUTE_UNUSED; | |
1101 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
b34976b6 | 1102 | bfd_boolean *again; |
f7775d95 | 1103 | { |
b34976b6 | 1104 | *again = FALSE; |
f0abc2a1 | 1105 | sec_do_relax (section) = 1; |
b34976b6 | 1106 | return TRUE; |
f7775d95 JJ |
1107 | } |
1108 | ||
e36f7d53 RH |
1109 | /* This is the condition under which finish_dynamic_symbol will be called |
1110 | from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol | |
1111 | routine, we'll need to do something about initializing any .plt and .got | |
1112 | entries in relocate_section. */ | |
1113 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1114 | ((DYN) \ | |
1115 | && ((INFO)->shared \ | |
1116 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1117 | && ((H)->dynindx != -1 \ | |
1118 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1119 | ||
252b5132 RH |
1120 | /* Relocate a SPARC ELF section. */ |
1121 | ||
b34976b6 | 1122 | static bfd_boolean |
252b5132 RH |
1123 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, |
1124 | contents, relocs, local_syms, local_sections) | |
1125 | bfd *output_bfd; | |
1126 | struct bfd_link_info *info; | |
1127 | bfd *input_bfd; | |
1128 | asection *input_section; | |
1129 | bfd_byte *contents; | |
1130 | Elf_Internal_Rela *relocs; | |
1131 | Elf_Internal_Sym *local_syms; | |
1132 | asection **local_sections; | |
1133 | { | |
1134 | bfd *dynobj; | |
1135 | Elf_Internal_Shdr *symtab_hdr; | |
1136 | struct elf_link_hash_entry **sym_hashes; | |
1137 | bfd_vma *local_got_offsets; | |
1138 | bfd_vma got_base; | |
1139 | asection *sgot; | |
1140 | asection *splt; | |
1141 | asection *sreloc; | |
1142 | Elf_Internal_Rela *rel; | |
1143 | Elf_Internal_Rela *relend; | |
1144 | ||
f0fe0e16 | 1145 | if (info->relocateable) |
b34976b6 | 1146 | return TRUE; |
f0fe0e16 | 1147 | |
252b5132 RH |
1148 | dynobj = elf_hash_table (info)->dynobj; |
1149 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1150 | sym_hashes = elf_sym_hashes (input_bfd); | |
1151 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1152 | ||
1153 | if (elf_hash_table (info)->hgot == NULL) | |
1154 | got_base = 0; | |
1155 | else | |
1156 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1157 | ||
1158 | sgot = NULL; | |
1159 | splt = NULL; | |
1160 | sreloc = NULL; | |
1161 | ||
1162 | rel = relocs; | |
1163 | relend = relocs + input_section->reloc_count; | |
1164 | for (; rel < relend; rel++) | |
1165 | { | |
1166 | int r_type; | |
1167 | reloc_howto_type *howto; | |
1168 | unsigned long r_symndx; | |
1169 | struct elf_link_hash_entry *h; | |
1170 | Elf_Internal_Sym *sym; | |
1171 | asection *sec; | |
e36f7d53 | 1172 | bfd_vma relocation, off; |
252b5132 | 1173 | bfd_reloc_status_type r; |
b34976b6 AM |
1174 | bfd_boolean is_plt = FALSE; |
1175 | bfd_boolean unresolved_reloc; | |
252b5132 RH |
1176 | |
1177 | r_type = ELF32_R_TYPE (rel->r_info); | |
1178 | ||
435b1e90 | 1179 | if (r_type == R_SPARC_GNU_VTINHERIT |
252b5132 RH |
1180 | || r_type == R_SPARC_GNU_VTENTRY) |
1181 | continue; | |
1182 | ||
60dac299 | 1183 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1184 | { |
1185 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1186 | return FALSE; |
252b5132 RH |
1187 | } |
1188 | howto = _bfd_sparc_elf_howto_table + r_type; | |
1189 | ||
252b5132 | 1190 | /* This is a final link. */ |
f0fe0e16 | 1191 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 RH |
1192 | h = NULL; |
1193 | sym = NULL; | |
1194 | sec = NULL; | |
b34976b6 | 1195 | unresolved_reloc = FALSE; |
252b5132 RH |
1196 | if (r_symndx < symtab_hdr->sh_info) |
1197 | { | |
1198 | sym = local_syms + r_symndx; | |
1199 | sec = local_sections[r_symndx]; | |
f8df10f4 | 1200 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
252b5132 RH |
1201 | } |
1202 | else | |
1203 | { | |
1204 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1205 | while (h->root.type == bfd_link_hash_indirect | |
1206 | || h->root.type == bfd_link_hash_warning) | |
1207 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e36f7d53 RH |
1208 | |
1209 | relocation = 0; | |
252b5132 RH |
1210 | if (h->root.type == bfd_link_hash_defined |
1211 | || h->root.type == bfd_link_hash_defweak) | |
1212 | { | |
1213 | sec = h->root.u.def.section; | |
e36f7d53 RH |
1214 | if (sec->output_section == NULL) |
1215 | /* Set a flag that will be cleared later if we find a | |
1216 | relocation value for this symbol. output_section | |
1217 | is typically NULL for symbols satisfied by a shared | |
1218 | library. */ | |
b34976b6 | 1219 | unresolved_reloc = TRUE; |
252b5132 RH |
1220 | else |
1221 | relocation = (h->root.u.def.value | |
1222 | + sec->output_section->vma | |
1223 | + sec->output_offset); | |
1224 | } | |
1225 | else if (h->root.type == bfd_link_hash_undefweak) | |
e36f7d53 | 1226 | ; |
671bae9c NC |
1227 | else if (info->shared |
1228 | && (!info->symbolic || info->allow_shlib_undefined) | |
3a27a730 L |
1229 | && !info->no_undefined |
1230 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
e36f7d53 | 1231 | ; |
252b5132 RH |
1232 | else |
1233 | { | |
1234 | if (! ((*info->callbacks->undefined_symbol) | |
1235 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1236 | input_section, rel->r_offset, |
3a27a730 L |
1237 | (!info->shared || info->no_undefined |
1238 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 1239 | return FALSE; |
252b5132 RH |
1240 | } |
1241 | } | |
1242 | ||
1243 | switch (r_type) | |
1244 | { | |
1245 | case R_SPARC_GOT10: | |
1246 | case R_SPARC_GOT13: | |
1247 | case R_SPARC_GOT22: | |
1248 | /* Relocation is to the entry for this symbol in the global | |
1249 | offset table. */ | |
1250 | if (sgot == NULL) | |
1251 | { | |
1252 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1253 | BFD_ASSERT (sgot != NULL); | |
1254 | } | |
1255 | ||
1256 | if (h != NULL) | |
1257 | { | |
b34976b6 | 1258 | bfd_boolean dyn; |
252b5132 RH |
1259 | |
1260 | off = h->got.offset; | |
1261 | BFD_ASSERT (off != (bfd_vma) -1); | |
e36f7d53 | 1262 | dyn = elf_hash_table (info)->dynamic_sections_created; |
252b5132 | 1263 | |
e36f7d53 | 1264 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) |
252b5132 | 1265 | || (info->shared |
e36f7d53 RH |
1266 | && (info->symbolic |
1267 | || h->dynindx == -1 | |
1268 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
252b5132 RH |
1269 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
1270 | { | |
1271 | /* This is actually a static link, or it is a | |
1272 | -Bsymbolic link and the symbol is defined | |
1273 | locally, or the symbol was forced to be local | |
1274 | because of a version file. We must initialize | |
1275 | this entry in the global offset table. Since the | |
1276 | offset must always be a multiple of 4, we use the | |
1277 | least significant bit to record whether we have | |
1278 | initialized it already. | |
1279 | ||
1280 | When doing a dynamic link, we create a .rela.got | |
1281 | relocation entry to initialize the value. This | |
1282 | is done in the finish_dynamic_symbol routine. */ | |
1283 | if ((off & 1) != 0) | |
1284 | off &= ~1; | |
1285 | else | |
1286 | { | |
1287 | bfd_put_32 (output_bfd, relocation, | |
1288 | sgot->contents + off); | |
1289 | h->got.offset |= 1; | |
1290 | } | |
1291 | } | |
e36f7d53 | 1292 | else |
b34976b6 | 1293 | unresolved_reloc = FALSE; |
252b5132 RH |
1294 | } |
1295 | else | |
1296 | { | |
252b5132 RH |
1297 | BFD_ASSERT (local_got_offsets != NULL |
1298 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1299 | ||
1300 | off = local_got_offsets[r_symndx]; | |
1301 | ||
1302 | /* The offset must always be a multiple of 4. We use | |
1303 | the least significant bit to record whether we have | |
1304 | already processed this entry. */ | |
1305 | if ((off & 1) != 0) | |
1306 | off &= ~1; | |
1307 | else | |
1308 | { | |
252b5132 RH |
1309 | |
1310 | if (info->shared) | |
1311 | { | |
b34976b6 | 1312 | asection *s; |
252b5132 | 1313 | Elf_Internal_Rela outrel; |
b34976b6 | 1314 | bfd_byte *loc; |
252b5132 RH |
1315 | |
1316 | /* We need to generate a R_SPARC_RELATIVE reloc | |
1317 | for the dynamic linker. */ | |
b34976b6 AM |
1318 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1319 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1320 | |
1321 | outrel.r_offset = (sgot->output_section->vma | |
1322 | + sgot->output_offset | |
1323 | + off); | |
1324 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
6b3ac709 JJ |
1325 | outrel.r_addend = relocation; |
1326 | relocation = 0; | |
b34976b6 AM |
1327 | loc = s->contents; |
1328 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1329 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1330 | } |
1331 | ||
6b3ac709 | 1332 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
252b5132 RH |
1333 | local_got_offsets[r_symndx] |= 1; |
1334 | } | |
252b5132 | 1335 | } |
e36f7d53 | 1336 | relocation = sgot->output_offset + off - got_base; |
252b5132 RH |
1337 | break; |
1338 | ||
bd5e6e7e JJ |
1339 | case R_SPARC_PLT32: |
1340 | if (h == NULL || h->plt.offset == (bfd_vma) -1) | |
1341 | { | |
1342 | r_type = R_SPARC_32; | |
1343 | goto r_sparc_plt32; | |
1344 | } | |
1345 | /* Fall through. */ | |
252b5132 RH |
1346 | case R_SPARC_WPLT30: |
1347 | /* Relocation is to the entry for this symbol in the | |
1348 | procedure linkage table. */ | |
1349 | ||
1350 | /* The Solaris native assembler will generate a WPLT30 reloc | |
1351 | for a local symbol if you assemble a call from one | |
1352 | section to another when using -K pic. We treat it as | |
1353 | WDISP30. */ | |
1354 | if (h == NULL) | |
1355 | break; | |
1356 | ||
1357 | if (h->plt.offset == (bfd_vma) -1) | |
1358 | { | |
1359 | /* We didn't make a PLT entry for this symbol. This | |
1360 | happens when statically linking PIC code, or when | |
1361 | using -Bsymbolic. */ | |
1362 | break; | |
1363 | } | |
1364 | ||
1365 | if (splt == NULL) | |
1366 | { | |
1367 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1368 | BFD_ASSERT (splt != NULL); | |
1369 | } | |
1370 | ||
1371 | relocation = (splt->output_section->vma | |
1372 | + splt->output_offset | |
1373 | + h->plt.offset); | |
b34976b6 | 1374 | unresolved_reloc = FALSE; |
bd5e6e7e JJ |
1375 | if (r_type == R_SPARC_PLT32) |
1376 | { | |
1377 | r_type = R_SPARC_32; | |
b34976b6 | 1378 | is_plt = TRUE; |
bd5e6e7e JJ |
1379 | goto r_sparc_plt32; |
1380 | } | |
252b5132 RH |
1381 | break; |
1382 | ||
1383 | case R_SPARC_PC10: | |
1384 | case R_SPARC_PC22: | |
1385 | if (h != NULL | |
1386 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1387 | break; | |
1388 | /* Fall through. */ | |
1389 | case R_SPARC_DISP8: | |
1390 | case R_SPARC_DISP16: | |
1391 | case R_SPARC_DISP32: | |
1392 | case R_SPARC_WDISP30: | |
1393 | case R_SPARC_WDISP22: | |
1394 | case R_SPARC_WDISP19: | |
1395 | case R_SPARC_WDISP16: | |
1396 | if (h == NULL | |
1397 | || (info->symbolic | |
1398 | && (h->elf_link_hash_flags | |
1399 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
1400 | break; | |
1401 | /* Fall through. */ | |
1402 | case R_SPARC_8: | |
1403 | case R_SPARC_16: | |
1404 | case R_SPARC_32: | |
1405 | case R_SPARC_HI22: | |
1406 | case R_SPARC_22: | |
1407 | case R_SPARC_13: | |
1408 | case R_SPARC_LO10: | |
0f2712ed | 1409 | case R_SPARC_UA16: |
252b5132 | 1410 | case R_SPARC_UA32: |
bd5e6e7e | 1411 | r_sparc_plt32: |
ec338859 AM |
1412 | if (info->shared |
1413 | && r_symndx != 0 | |
1414 | && (input_section->flags & SEC_ALLOC)) | |
252b5132 RH |
1415 | { |
1416 | Elf_Internal_Rela outrel; | |
b34976b6 AM |
1417 | bfd_byte *loc; |
1418 | bfd_boolean skip, relocate = FALSE; | |
252b5132 RH |
1419 | |
1420 | /* When generating a shared object, these relocations | |
1421 | are copied into the output file to be resolved at run | |
1422 | time. */ | |
1423 | ||
1424 | if (sreloc == NULL) | |
1425 | { | |
1426 | const char *name; | |
1427 | ||
1428 | name = (bfd_elf_string_from_elf_section | |
1429 | (input_bfd, | |
1430 | elf_elfheader (input_bfd)->e_shstrndx, | |
1431 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1432 | if (name == NULL) | |
b34976b6 | 1433 | return FALSE; |
252b5132 RH |
1434 | |
1435 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1436 | && strcmp (bfd_get_section_name (input_bfd, | |
1437 | input_section), | |
1438 | name + 5) == 0); | |
1439 | ||
1440 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1441 | BFD_ASSERT (sreloc != NULL); | |
1442 | } | |
1443 | ||
b34976b6 | 1444 | skip = FALSE; |
252b5132 | 1445 | |
c629eae0 JJ |
1446 | outrel.r_offset = |
1447 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1448 | rel->r_offset); | |
1449 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1450 | skip = TRUE; |
0bb2d96a | 1451 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1452 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1453 | outrel.r_offset += (input_section->output_section->vma |
1454 | + input_section->output_offset); | |
1455 | ||
20278fa3 JJ |
1456 | /* Optimize unaligned reloc usage now that we know where |
1457 | it finally resides. */ | |
1458 | switch (r_type) | |
1459 | { | |
1460 | case R_SPARC_16: | |
1461 | if (outrel.r_offset & 1) | |
1462 | r_type = R_SPARC_UA16; | |
1463 | break; | |
1464 | case R_SPARC_UA16: | |
1465 | if (!(outrel.r_offset & 1)) | |
1466 | r_type = R_SPARC_16; | |
1467 | break; | |
1468 | case R_SPARC_32: | |
1469 | if (outrel.r_offset & 3) | |
1470 | r_type = R_SPARC_UA32; | |
1471 | break; | |
1472 | case R_SPARC_UA32: | |
1473 | if (!(outrel.r_offset & 3)) | |
1474 | r_type = R_SPARC_32; | |
1475 | break; | |
b88a866a JJ |
1476 | case R_SPARC_DISP8: |
1477 | case R_SPARC_DISP16: | |
1478 | case R_SPARC_DISP32: | |
1479 | /* If the symbol is not dynamic, we should not keep | |
1480 | a dynamic relocation. But an .rela.* slot has been | |
1481 | allocated for it, output R_SPARC_NONE. | |
1482 | FIXME: Add code tracking needed dynamic relocs as | |
1483 | e.g. i386 has. */ | |
1484 | if (h->dynindx == -1) | |
b34976b6 | 1485 | skip = TRUE, relocate = TRUE; |
b88a866a | 1486 | break; |
20278fa3 JJ |
1487 | } |
1488 | ||
252b5132 RH |
1489 | if (skip) |
1490 | memset (&outrel, 0, sizeof outrel); | |
1491 | /* h->dynindx may be -1 if the symbol was marked to | |
1492 | become local. */ | |
bd5e6e7e | 1493 | else if (h != NULL && ! is_plt |
252b5132 RH |
1494 | && ((! info->symbolic && h->dynindx != -1) |
1495 | || (h->elf_link_hash_flags | |
1496 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1497 | { | |
1498 | BFD_ASSERT (h->dynindx != -1); | |
1499 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1500 | outrel.r_addend = rel->r_addend; | |
1501 | } | |
1502 | else | |
1503 | { | |
1fbc4a84 | 1504 | if (r_type == R_SPARC_32) |
252b5132 RH |
1505 | { |
1506 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1507 | outrel.r_addend = relocation + rel->r_addend; | |
1508 | } | |
1509 | else | |
1510 | { | |
1511 | long indx; | |
1512 | ||
bd5e6e7e JJ |
1513 | if (is_plt) |
1514 | sec = splt; | |
1515 | else if (h == NULL) | |
252b5132 RH |
1516 | sec = local_sections[r_symndx]; |
1517 | else | |
1518 | { | |
1519 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1520 | || (h->root.type | |
1521 | == bfd_link_hash_defweak)); | |
1522 | sec = h->root.u.def.section; | |
1523 | } | |
1524 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1525 | indx = 0; | |
1526 | else if (sec == NULL || sec->owner == NULL) | |
1527 | { | |
1528 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1529 | return FALSE; |
252b5132 RH |
1530 | } |
1531 | else | |
1532 | { | |
1533 | asection *osec; | |
1534 | ||
1535 | osec = sec->output_section; | |
1536 | indx = elf_section_data (osec)->dynindx; | |
1537 | ||
1538 | /* FIXME: we really should be able to link non-pic | |
1539 | shared libraries. */ | |
1540 | if (indx == 0) | |
1541 | { | |
1542 | BFD_FAIL (); | |
1543 | (*_bfd_error_handler) | |
1544 | (_("%s: probably compiled without -fPIC?"), | |
8f615d07 | 1545 | bfd_archive_filename (input_bfd)); |
252b5132 | 1546 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1547 | return FALSE; |
252b5132 RH |
1548 | } |
1549 | } | |
1550 | ||
1551 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
840a9995 | 1552 | outrel.r_addend = relocation + rel->r_addend; |
252b5132 RH |
1553 | } |
1554 | } | |
1555 | ||
b34976b6 AM |
1556 | loc = sreloc->contents; |
1557 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1558 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1559 | |
1560 | /* This reloc will be computed at runtime, so there's no | |
20278fa3 | 1561 | need to do anything now. */ |
0bb2d96a JJ |
1562 | if (! relocate) |
1563 | continue; | |
252b5132 RH |
1564 | } |
1565 | break; | |
1566 | ||
1567 | default: | |
1568 | break; | |
1569 | } | |
1570 | ||
239e1f3a AM |
1571 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1572 | because such sections are not SEC_ALLOC and thus ld.so will | |
1573 | not process them. */ | |
e36f7d53 | 1574 | if (unresolved_reloc |
239e1f3a | 1575 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
e36f7d53 RH |
1576 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
1577 | (*_bfd_error_handler) | |
1578 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
1579 | bfd_archive_filename (input_bfd), | |
1580 | bfd_get_section_name (input_bfd, input_section), | |
1581 | (long) rel->r_offset, | |
1582 | h->root.root.string); | |
1583 | ||
f7775d95 | 1584 | r = bfd_reloc_continue; |
252b5132 RH |
1585 | if (r_type == R_SPARC_WDISP16) |
1586 | { | |
1587 | bfd_vma x; | |
1588 | ||
1589 | relocation += rel->r_addend; | |
1590 | relocation -= (input_section->output_section->vma | |
1591 | + input_section->output_offset); | |
1592 | relocation -= rel->r_offset; | |
1593 | ||
1594 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1595 | x |= ((((relocation >> 2) & 0xc000) << 6) | |
1596 | | ((relocation >> 2) & 0x3fff)); | |
1597 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1598 | ||
1599 | if ((bfd_signed_vma) relocation < - 0x40000 | |
1600 | || (bfd_signed_vma) relocation > 0x3ffff) | |
1601 | r = bfd_reloc_overflow; | |
1602 | else | |
1603 | r = bfd_reloc_ok; | |
1604 | } | |
1605 | else if (r_type == R_SPARC_REV32) | |
1606 | { | |
1607 | bfd_vma x; | |
1608 | ||
1609 | relocation = relocation + rel->r_addend; | |
1610 | ||
1611 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1612 | x = x + relocation; | |
1613 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); | |
1614 | r = bfd_reloc_ok; | |
1615 | } | |
f7775d95 | 1616 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) |
f0abc2a1 | 1617 | && sec_do_relax (input_section) |
f7775d95 JJ |
1618 | && rel->r_offset + 4 < input_section->_raw_size) |
1619 | { | |
1620 | #define G0 0 | |
1621 | #define O7 15 | |
1622 | #define XCC (2 << 20) | |
1623 | #define COND(x) (((x)&0xf)<<25) | |
1624 | #define CONDA COND(0x8) | |
1625 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) | |
1626 | #define INSN_BA (F2(0,2) | CONDA) | |
1627 | #define INSN_OR F3(2, 0x2, 0) | |
1628 | #define INSN_NOP F2(0,4) | |
1629 | ||
1630 | bfd_vma x, y; | |
1631 | ||
1632 | /* If the instruction is a call with either: | |
1633 | restore | |
1634 | arithmetic instruction with rd == %o7 | |
1635 | where rs1 != %o7 and rs2 if it is register != %o7 | |
1636 | then we can optimize if the call destination is near | |
1637 | by changing the call into a branch always. */ | |
1638 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
1639 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
1640 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) | |
1641 | { | |
1642 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ | |
1643 | || ((y & OP3(0x28)) == 0 /* arithmetic */ | |
1644 | && (y & RD(~0)) == RD(O7))) | |
1645 | && (y & RS1(~0)) != RS1(O7) | |
1646 | && ((y & F3I(~0)) | |
1647 | || (y & RS2(~0)) != RS2(O7))) | |
1648 | { | |
1649 | bfd_vma reloc; | |
1650 | ||
1651 | reloc = relocation + rel->r_addend - rel->r_offset; | |
1652 | reloc -= (input_section->output_section->vma | |
1653 | + input_section->output_offset); | |
1654 | ||
1655 | /* Ensure the reloc fits into simm22. */ | |
1656 | if ((reloc & 3) == 0 | |
1657 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 | |
1658 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) | |
1659 | { | |
1660 | reloc >>= 2; | |
435b1e90 | 1661 | |
f7775d95 JJ |
1662 | /* Check whether it fits into simm19 on v9. */ |
1663 | if (((reloc & 0x3c0000) == 0 | |
1664 | || (reloc & 0x3c0000) == 0x3c0000) | |
1665 | && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) | |
1666 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ | |
1667 | else | |
1668 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ | |
1669 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
1670 | r = bfd_reloc_ok; | |
1671 | if (rel->r_offset >= 4 | |
1672 | && (y & (0xffffffff ^ RS1(~0))) | |
1673 | == (INSN_OR | RD(O7) | RS2(G0))) | |
1674 | { | |
1675 | bfd_vma z; | |
1676 | unsigned int reg; | |
1677 | ||
1678 | z = bfd_get_32 (input_bfd, | |
1679 | contents + rel->r_offset - 4); | |
1680 | if ((z & (0xffffffff ^ RD(~0))) | |
1681 | != (INSN_OR | RS1(O7) | RS2(G0))) | |
1682 | break; | |
1683 | ||
1684 | /* The sequence was | |
1685 | or %o7, %g0, %rN | |
1686 | call foo | |
1687 | or %rN, %g0, %o7 | |
1688 | ||
1689 | If call foo was replaced with ba, replace | |
1690 | or %rN, %g0, %o7 with nop. */ | |
1691 | ||
1692 | reg = (y & RS1(~0)) >> 14; | |
1693 | if (reg != ((z & RD(~0)) >> 25) | |
1694 | || reg == G0 || reg == O7) | |
1695 | break; | |
1696 | ||
dc810e39 | 1697 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, |
f7775d95 JJ |
1698 | contents + rel->r_offset + 4); |
1699 | } | |
1700 | ||
1701 | } | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | if (r == bfd_reloc_continue) | |
252b5132 RH |
1707 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1708 | contents, rel->r_offset, | |
1709 | relocation, rel->r_addend); | |
1710 | ||
252b5132 RH |
1711 | if (r != bfd_reloc_ok) |
1712 | { | |
1713 | switch (r) | |
1714 | { | |
1715 | default: | |
1716 | case bfd_reloc_outofrange: | |
1717 | abort (); | |
1718 | case bfd_reloc_overflow: | |
1719 | { | |
1720 | const char *name; | |
1721 | ||
1722 | if (h != NULL) | |
1723 | name = h->root.root.string; | |
1724 | else | |
1725 | { | |
1726 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1727 | symtab_hdr->sh_link, | |
1728 | sym->st_name); | |
1729 | if (name == NULL) | |
b34976b6 | 1730 | return FALSE; |
252b5132 RH |
1731 | if (*name == '\0') |
1732 | name = bfd_section_name (input_bfd, sec); | |
1733 | } | |
1734 | if (! ((*info->callbacks->reloc_overflow) | |
1735 | (info, name, howto->name, (bfd_vma) 0, | |
1736 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1737 | return FALSE; |
252b5132 RH |
1738 | } |
1739 | break; | |
1740 | } | |
1741 | } | |
1742 | } | |
1743 | ||
b34976b6 | 1744 | return TRUE; |
252b5132 RH |
1745 | } |
1746 | ||
1747 | /* Finish up dynamic symbol handling. We set the contents of various | |
1748 | dynamic sections here. */ | |
1749 | ||
b34976b6 | 1750 | static bfd_boolean |
252b5132 RH |
1751 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) |
1752 | bfd *output_bfd; | |
1753 | struct bfd_link_info *info; | |
1754 | struct elf_link_hash_entry *h; | |
1755 | Elf_Internal_Sym *sym; | |
1756 | { | |
1757 | bfd *dynobj; | |
1758 | ||
1759 | dynobj = elf_hash_table (info)->dynobj; | |
1760 | ||
1761 | if (h->plt.offset != (bfd_vma) -1) | |
1762 | { | |
1763 | asection *splt; | |
1764 | asection *srela; | |
1765 | Elf_Internal_Rela rela; | |
b34976b6 | 1766 | bfd_byte *loc; |
252b5132 RH |
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; | |
b34976b6 AM |
1794 | loc = srela->contents; |
1795 | loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela); | |
1796 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
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; | |
b34976b6 | 1818 | bfd_byte *loc; |
252b5132 RH |
1819 | |
1820 | /* This symbol has an entry in the global offset table. Set it | |
1821 | up. */ | |
1822 | ||
1823 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1824 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1825 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1826 | ||
1827 | rela.r_offset = (sgot->output_section->vma | |
1828 | + sgot->output_offset | |
dc810e39 | 1829 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1830 | |
1831 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1832 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1833 | the symbol was forced to be local because of a version file. | |
1834 | The entry in the global offset table will already have been | |
1835 | initialized in the relocate_section function. */ | |
1836 | if (info->shared | |
1837 | && (info->symbolic || h->dynindx == -1) | |
1838 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
6b3ac709 JJ |
1839 | { |
1840 | asection *sec = h->root.u.def.section; | |
1841 | rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); | |
1842 | rela.r_addend = (h->root.u.def.value | |
1843 | + sec->output_section->vma | |
1844 | + sec->output_offset); | |
1845 | } | |
252b5132 RH |
1846 | else |
1847 | { | |
252b5132 | 1848 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); |
6b3ac709 | 1849 | rela.r_addend = 0; |
252b5132 RH |
1850 | } |
1851 | ||
6b3ac709 JJ |
1852 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
1853 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); | |
b34976b6 AM |
1854 | loc = srela->contents; |
1855 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1856 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1857 | } |
1858 | ||
1859 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1860 | { | |
1861 | asection *s; | |
1862 | Elf_Internal_Rela rela; | |
b34976b6 | 1863 | bfd_byte *loc; |
252b5132 RH |
1864 | |
1865 | /* This symbols needs a copy reloc. Set it up. */ | |
1866 | ||
1867 | BFD_ASSERT (h->dynindx != -1); | |
1868 | ||
1869 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1870 | ".rela.bss"); | |
1871 | BFD_ASSERT (s != NULL); | |
1872 | ||
1873 | rela.r_offset = (h->root.u.def.value | |
1874 | + h->root.u.def.section->output_section->vma | |
1875 | + h->root.u.def.section->output_offset); | |
1876 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); | |
1877 | rela.r_addend = 0; | |
b34976b6 AM |
1878 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1879 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1880 | } |
1881 | ||
1882 | /* Mark some specially defined symbols as absolute. */ | |
1883 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1884 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
1885 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
1886 | sym->st_shndx = SHN_ABS; | |
1887 | ||
b34976b6 | 1888 | return TRUE; |
252b5132 RH |
1889 | } |
1890 | ||
1891 | /* Finish up the dynamic sections. */ | |
1892 | ||
b34976b6 | 1893 | static bfd_boolean |
252b5132 RH |
1894 | elf32_sparc_finish_dynamic_sections (output_bfd, info) |
1895 | bfd *output_bfd; | |
1896 | struct bfd_link_info *info; | |
1897 | { | |
1898 | bfd *dynobj; | |
1899 | asection *sdyn; | |
1900 | asection *sgot; | |
1901 | ||
1902 | dynobj = elf_hash_table (info)->dynobj; | |
1903 | ||
1904 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1905 | ||
1906 | if (elf_hash_table (info)->dynamic_sections_created) | |
1907 | { | |
1908 | asection *splt; | |
1909 | Elf32_External_Dyn *dyncon, *dynconend; | |
1910 | ||
1911 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1912 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1913 | ||
1914 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1915 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1916 | for (; dyncon < dynconend; dyncon++) | |
1917 | { | |
1918 | Elf_Internal_Dyn dyn; | |
1919 | const char *name; | |
b34976b6 | 1920 | bfd_boolean size; |
252b5132 RH |
1921 | |
1922 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1923 | ||
1924 | switch (dyn.d_tag) | |
1925 | { | |
b34976b6 AM |
1926 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; |
1927 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; | |
1928 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; | |
1929 | default: name = NULL; size = FALSE; break; | |
252b5132 RH |
1930 | } |
1931 | ||
1932 | if (name != NULL) | |
1933 | { | |
1934 | asection *s; | |
1935 | ||
1936 | s = bfd_get_section_by_name (output_bfd, name); | |
1937 | if (s == NULL) | |
1938 | dyn.d_un.d_val = 0; | |
1939 | else | |
1940 | { | |
1941 | if (! size) | |
1942 | dyn.d_un.d_ptr = s->vma; | |
1943 | else | |
1944 | { | |
1945 | if (s->_cooked_size != 0) | |
1946 | dyn.d_un.d_val = s->_cooked_size; | |
1947 | else | |
1948 | dyn.d_un.d_val = s->_raw_size; | |
1949 | } | |
1950 | } | |
1951 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1952 | } | |
1953 | } | |
1954 | ||
1955 | /* Clear the first four entries in the procedure linkage table, | |
1956 | and put a nop in the last four bytes. */ | |
1957 | if (splt->_raw_size > 0) | |
1958 | { | |
1959 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); | |
dc810e39 | 1960 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, |
252b5132 RH |
1961 | splt->contents + splt->_raw_size - 4); |
1962 | } | |
1963 | ||
1964 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1965 | PLT_ENTRY_SIZE; | |
1966 | } | |
1967 | ||
1968 | /* Set the first entry in the global offset table to the address of | |
1969 | the dynamic section. */ | |
1970 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1971 | BFD_ASSERT (sgot != NULL); | |
1972 | if (sgot->_raw_size > 0) | |
1973 | { | |
1974 | if (sdyn == NULL) | |
1975 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1976 | else | |
1977 | bfd_put_32 (output_bfd, | |
1978 | sdyn->output_section->vma + sdyn->output_offset, | |
1979 | sgot->contents); | |
1980 | } | |
1981 | ||
1982 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1983 | ||
b34976b6 | 1984 | return TRUE; |
252b5132 RH |
1985 | } |
1986 | \f | |
1987 | /* Functions for dealing with the e_flags field. | |
1988 | ||
1989 | We don't define set_private_flags or copy_private_bfd_data because | |
1990 | the only currently defined values are based on the bfd mach number, | |
1991 | so we use the latter instead and defer setting e_flags until the | |
1992 | file is written out. */ | |
1993 | ||
1994 | /* Merge backend specific data from an object file to the output | |
1995 | object file when linking. */ | |
1996 | ||
b34976b6 | 1997 | static bfd_boolean |
252b5132 RH |
1998 | elf32_sparc_merge_private_bfd_data (ibfd, obfd) |
1999 | bfd *ibfd; | |
2000 | bfd *obfd; | |
2001 | { | |
b34976b6 | 2002 | bfd_boolean error; |
5f771d47 ILT |
2003 | /* FIXME: This should not be static. */ |
2004 | static unsigned long previous_ibfd_e_flags = (unsigned long) -1; | |
252b5132 RH |
2005 | |
2006 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2007 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 2008 | return TRUE; |
252b5132 | 2009 | |
b34976b6 | 2010 | error = FALSE; |
252b5132 | 2011 | |
252b5132 RH |
2012 | if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9) |
2013 | { | |
b34976b6 | 2014 | error = TRUE; |
252b5132 RH |
2015 | (*_bfd_error_handler) |
2016 | (_("%s: compiled for a 64 bit system and target is 32 bit"), | |
8f615d07 | 2017 | bfd_archive_filename (ibfd)); |
252b5132 | 2018 | } |
37fb6db1 ILT |
2019 | else if ((ibfd->flags & DYNAMIC) == 0) |
2020 | { | |
2021 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
2022 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); | |
2023 | } | |
252b5132 RH |
2024 | |
2025 | if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) | |
2026 | != previous_ibfd_e_flags) | |
5f771d47 | 2027 | && previous_ibfd_e_flags != (unsigned long) -1) |
252b5132 RH |
2028 | { |
2029 | (*_bfd_error_handler) | |
2030 | (_("%s: linking little endian files with big endian files"), | |
8f615d07 | 2031 | bfd_archive_filename (ibfd)); |
b34976b6 | 2032 | error = TRUE; |
252b5132 RH |
2033 | } |
2034 | previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; | |
2035 | ||
2036 | if (error) | |
2037 | { | |
2038 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2039 | return FALSE; |
252b5132 RH |
2040 | } |
2041 | ||
b34976b6 | 2042 | return TRUE; |
252b5132 RH |
2043 | } |
2044 | \f | |
2045 | /* Set the right machine number. */ | |
2046 | ||
b34976b6 | 2047 | static bfd_boolean |
252b5132 RH |
2048 | elf32_sparc_object_p (abfd) |
2049 | bfd *abfd; | |
2050 | { | |
2051 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) | |
2052 | { | |
19f7b010 JJ |
2053 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
2054 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2055 | bfd_mach_sparc_v8plusb); | |
2056 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
252b5132 RH |
2057 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
2058 | bfd_mach_sparc_v8plusa); | |
2059 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) | |
2060 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
2061 | bfd_mach_sparc_v8plus); | |
2062 | else | |
b34976b6 | 2063 | return FALSE; |
252b5132 RH |
2064 | } |
2065 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) | |
2066 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, | |
20278fa3 | 2067 | bfd_mach_sparc_sparclite_le); |
252b5132 RH |
2068 | else |
2069 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); | |
2070 | } | |
2071 | ||
2072 | /* The final processing done just before writing out the object file. | |
2073 | We need to set the e_machine field appropriately. */ | |
2074 | ||
2075 | static void | |
2076 | elf32_sparc_final_write_processing (abfd, linker) | |
2077 | bfd *abfd; | |
b34976b6 | 2078 | bfd_boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
2079 | { |
2080 | switch (bfd_get_mach (abfd)) | |
2081 | { | |
2082 | case bfd_mach_sparc : | |
2083 | break; /* nothing to do */ | |
2084 | case bfd_mach_sparc_v8plus : | |
2085 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2086 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2087 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; | |
2088 | break; | |
2089 | case bfd_mach_sparc_v8plusa : | |
2090 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2091 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2092 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; | |
2093 | break; | |
19f7b010 JJ |
2094 | case bfd_mach_sparc_v8plusb : |
2095 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; | |
2096 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; | |
2097 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 | |
2098 | | EF_SPARC_SUN_US3; | |
2099 | break; | |
252b5132 RH |
2100 | case bfd_mach_sparc_sparclite_le : |
2101 | elf_elfheader (abfd)->e_machine = EM_SPARC; | |
2102 | elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; | |
2103 | break; | |
2104 | default : | |
2105 | abort (); | |
2106 | break; | |
2107 | } | |
2108 | } | |
db6751f2 JJ |
2109 | |
2110 | static enum elf_reloc_type_class | |
f51e552e AM |
2111 | elf32_sparc_reloc_type_class (rela) |
2112 | const Elf_Internal_Rela *rela; | |
db6751f2 | 2113 | { |
f51e552e | 2114 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
db6751f2 JJ |
2115 | { |
2116 | case R_SPARC_RELATIVE: | |
2117 | return reloc_class_relative; | |
2118 | case R_SPARC_JMP_SLOT: | |
2119 | return reloc_class_plt; | |
2120 | case R_SPARC_COPY: | |
2121 | return reloc_class_copy; | |
2122 | default: | |
2123 | return reloc_class_normal; | |
2124 | } | |
2125 | } | |
252b5132 RH |
2126 | \f |
2127 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec | |
2128 | #define TARGET_BIG_NAME "elf32-sparc" | |
2129 | #define ELF_ARCH bfd_arch_sparc | |
2130 | #define ELF_MACHINE_CODE EM_SPARC | |
2131 | #define ELF_MACHINE_ALT1 EM_SPARC32PLUS | |
2132 | #define ELF_MAXPAGESIZE 0x10000 | |
2133 | ||
2134 | #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup | |
f7775d95 | 2135 | #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section |
252b5132 RH |
2136 | #define elf_info_to_howto elf32_sparc_info_to_howto |
2137 | #define elf_backend_create_dynamic_sections \ | |
2138 | _bfd_elf_create_dynamic_sections | |
2139 | #define elf_backend_check_relocs elf32_sparc_check_relocs | |
2140 | #define elf_backend_adjust_dynamic_symbol \ | |
2141 | elf32_sparc_adjust_dynamic_symbol | |
2142 | #define elf_backend_size_dynamic_sections \ | |
2143 | elf32_sparc_size_dynamic_sections | |
2144 | #define elf_backend_relocate_section elf32_sparc_relocate_section | |
2145 | #define elf_backend_finish_dynamic_symbol \ | |
2146 | elf32_sparc_finish_dynamic_symbol | |
2147 | #define elf_backend_finish_dynamic_sections \ | |
2148 | elf32_sparc_finish_dynamic_sections | |
2149 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2150 | elf32_sparc_merge_private_bfd_data | |
2151 | #define elf_backend_object_p elf32_sparc_object_p | |
2152 | #define elf_backend_final_write_processing \ | |
2153 | elf32_sparc_final_write_processing | |
2154 | #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook | |
2155 | #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook | |
db6751f2 | 2156 | #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class |
252b5132 RH |
2157 | |
2158 | #define elf_backend_can_gc_sections 1 | |
2159 | #define elf_backend_want_got_plt 0 | |
2160 | #define elf_backend_plt_readonly 0 | |
2161 | #define elf_backend_want_plt_sym 1 | |
2162 | #define elf_backend_got_header_size 4 | |
2163 | #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE) | |
f0fe0e16 | 2164 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2165 | |
2166 | #include "elf32-target.h" |